1 //===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCTargetAsmParser.h"
11 #include "MCTargetDesc/ARMAddressingModes.h"
12 #include "MCTargetDesc/ARMBaseInfo.h"
13 #include "MCTargetDesc/ARMMCExpr.h"
14 #include "llvm/ADT/BitVector.h"
15 #include "llvm/ADT/OwningPtr.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/SmallVector.h"
18 #include "llvm/ADT/StringSwitch.h"
19 #include "llvm/ADT/Twine.h"
20 #include "llvm/MC/MCAsmInfo.h"
21 #include "llvm/MC/MCAssembler.h"
22 #include "llvm/MC/MCContext.h"
23 #include "llvm/MC/MCELFStreamer.h"
24 #include "llvm/MC/MCExpr.h"
25 #include "llvm/MC/MCInst.h"
26 #include "llvm/MC/MCInstrDesc.h"
27 #include "llvm/MC/MCParser/MCAsmLexer.h"
28 #include "llvm/MC/MCParser/MCAsmParser.h"
29 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
30 #include "llvm/MC/MCRegisterInfo.h"
31 #include "llvm/MC/MCStreamer.h"
32 #include "llvm/MC/MCSubtargetInfo.h"
33 #include "llvm/Support/ELF.h"
34 #include "llvm/Support/MathExtras.h"
35 #include "llvm/Support/SourceMgr.h"
36 #include "llvm/Support/TargetRegistry.h"
37 #include "llvm/Support/raw_ostream.h"
45 enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
47 class ARMAsmParser : public MCTargetAsmParser {
50 const MCRegisterInfo *MRI;
52 // Unwind directives state
58 void resetUnwindDirectiveParserState() {
60 CantUnwindLoc = SMLoc();
61 PersonalityLoc = SMLoc();
62 HandlerDataLoc = SMLoc();
66 // Map of register aliases registers via the .req directive.
67 StringMap<unsigned> RegisterReqs;
70 ARMCC::CondCodes Cond; // Condition for IT block.
71 unsigned Mask:4; // Condition mask for instructions.
72 // Starting at first 1 (from lsb).
73 // '1' condition as indicated in IT.
74 // '0' inverse of condition (else).
75 // Count of instructions in IT block is
76 // 4 - trailingzeroes(mask)
78 bool FirstCond; // Explicit flag for when we're parsing the
79 // First instruction in the IT block. It's
80 // implied in the mask, so needs special
83 unsigned CurPosition; // Current position in parsing of IT
84 // block. In range [0,3]. Initialized
85 // according to count of instructions in block.
86 // ~0U if no active IT block.
88 bool inITBlock() { return ITState.CurPosition != ~0U;}
89 void forwardITPosition() {
90 if (!inITBlock()) return;
91 // Move to the next instruction in the IT block, if there is one. If not,
92 // mark the block as done.
93 unsigned TZ = countTrailingZeros(ITState.Mask);
94 if (++ITState.CurPosition == 5 - TZ)
95 ITState.CurPosition = ~0U; // Done with the IT block after this.
99 MCAsmParser &getParser() const { return Parser; }
100 MCAsmLexer &getLexer() const { return Parser.getLexer(); }
102 bool Warning(SMLoc L, const Twine &Msg,
103 ArrayRef<SMRange> Ranges = None) {
104 return Parser.Warning(L, Msg, Ranges);
106 bool Error(SMLoc L, const Twine &Msg,
107 ArrayRef<SMRange> Ranges = None) {
108 return Parser.Error(L, Msg, Ranges);
111 int tryParseRegister();
112 bool tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &);
113 int tryParseShiftRegister(SmallVectorImpl<MCParsedAsmOperand*> &);
114 bool parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &);
115 bool parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &);
116 bool parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &, StringRef Mnemonic);
117 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
118 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
119 unsigned &ShiftAmount);
120 bool parseDirectiveWord(unsigned Size, SMLoc L);
121 bool parseDirectiveThumb(SMLoc L);
122 bool parseDirectiveARM(SMLoc L);
123 bool parseDirectiveThumbFunc(SMLoc L);
124 bool parseDirectiveCode(SMLoc L);
125 bool parseDirectiveSyntax(SMLoc L);
126 bool parseDirectiveReq(StringRef Name, SMLoc L);
127 bool parseDirectiveUnreq(SMLoc L);
128 bool parseDirectiveArch(SMLoc L);
129 bool parseDirectiveEabiAttr(SMLoc L);
130 bool parseDirectiveFnStart(SMLoc L);
131 bool parseDirectiveFnEnd(SMLoc L);
132 bool parseDirectiveCantUnwind(SMLoc L);
133 bool parseDirectivePersonality(SMLoc L);
134 bool parseDirectiveHandlerData(SMLoc L);
135 bool parseDirectiveSetFP(SMLoc L);
136 bool parseDirectivePad(SMLoc L);
137 bool parseDirectiveRegSave(SMLoc L, bool IsVector);
139 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
140 bool &CarrySetting, unsigned &ProcessorIMod,
142 void getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
143 bool &CanAcceptPredicationCode);
145 bool isThumb() const {
146 // FIXME: Can tablegen auto-generate this?
147 return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
149 bool isThumbOne() const {
150 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2) == 0;
152 bool isThumbTwo() const {
153 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2);
155 bool hasThumb() const {
156 return STI.getFeatureBits() & ARM::HasV4TOps;
158 bool hasV6Ops() const {
159 return STI.getFeatureBits() & ARM::HasV6Ops;
161 bool hasV7Ops() const {
162 return STI.getFeatureBits() & ARM::HasV7Ops;
164 bool hasV8Ops() const {
165 return STI.getFeatureBits() & ARM::HasV8Ops;
167 bool hasARM() const {
168 return !(STI.getFeatureBits() & ARM::FeatureNoARM);
172 unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
173 setAvailableFeatures(FB);
175 bool isMClass() const {
176 return STI.getFeatureBits() & ARM::FeatureMClass;
179 /// @name Auto-generated Match Functions
182 #define GET_ASSEMBLER_HEADER
183 #include "ARMGenAsmMatcher.inc"
187 OperandMatchResultTy parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*>&);
188 OperandMatchResultTy parseCoprocNumOperand(
189 SmallVectorImpl<MCParsedAsmOperand*>&);
190 OperandMatchResultTy parseCoprocRegOperand(
191 SmallVectorImpl<MCParsedAsmOperand*>&);
192 OperandMatchResultTy parseCoprocOptionOperand(
193 SmallVectorImpl<MCParsedAsmOperand*>&);
194 OperandMatchResultTy parseMemBarrierOptOperand(
195 SmallVectorImpl<MCParsedAsmOperand*>&);
196 OperandMatchResultTy parseInstSyncBarrierOptOperand(
197 SmallVectorImpl<MCParsedAsmOperand*>&);
198 OperandMatchResultTy parseProcIFlagsOperand(
199 SmallVectorImpl<MCParsedAsmOperand*>&);
200 OperandMatchResultTy parseMSRMaskOperand(
201 SmallVectorImpl<MCParsedAsmOperand*>&);
202 OperandMatchResultTy parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &O,
203 StringRef Op, int Low, int High);
204 OperandMatchResultTy parsePKHLSLImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
205 return parsePKHImm(O, "lsl", 0, 31);
207 OperandMatchResultTy parsePKHASRImm(SmallVectorImpl<MCParsedAsmOperand*> &O) {
208 return parsePKHImm(O, "asr", 1, 32);
210 OperandMatchResultTy parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*>&);
211 OperandMatchResultTy parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*>&);
212 OperandMatchResultTy parseRotImm(SmallVectorImpl<MCParsedAsmOperand*>&);
213 OperandMatchResultTy parseBitfield(SmallVectorImpl<MCParsedAsmOperand*>&);
214 OperandMatchResultTy parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*>&);
215 OperandMatchResultTy parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*>&);
216 OperandMatchResultTy parseFPImm(SmallVectorImpl<MCParsedAsmOperand*>&);
217 OperandMatchResultTy parseVectorList(SmallVectorImpl<MCParsedAsmOperand*>&);
218 OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index,
221 // Asm Match Converter Methods
222 void cvtT2LdrdPre(MCInst &Inst, const SmallVectorImpl<MCParsedAsmOperand*> &);
223 void cvtT2StrdPre(MCInst &Inst, const SmallVectorImpl<MCParsedAsmOperand*> &);
224 void cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst,
225 const SmallVectorImpl<MCParsedAsmOperand*> &);
226 void cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst,
227 const SmallVectorImpl<MCParsedAsmOperand*> &);
228 void cvtLdWriteBackRegAddrMode2(MCInst &Inst,
229 const SmallVectorImpl<MCParsedAsmOperand*> &);
230 void cvtLdWriteBackRegAddrModeImm12(MCInst &Inst,
231 const SmallVectorImpl<MCParsedAsmOperand*> &);
232 void cvtStWriteBackRegAddrModeImm12(MCInst &Inst,
233 const SmallVectorImpl<MCParsedAsmOperand*> &);
234 void cvtStWriteBackRegAddrMode2(MCInst &Inst,
235 const SmallVectorImpl<MCParsedAsmOperand*> &);
236 void cvtStWriteBackRegAddrMode3(MCInst &Inst,
237 const SmallVectorImpl<MCParsedAsmOperand*> &);
238 void cvtLdExtTWriteBackImm(MCInst &Inst,
239 const SmallVectorImpl<MCParsedAsmOperand*> &);
240 void cvtLdExtTWriteBackReg(MCInst &Inst,
241 const SmallVectorImpl<MCParsedAsmOperand*> &);
242 void cvtStExtTWriteBackImm(MCInst &Inst,
243 const SmallVectorImpl<MCParsedAsmOperand*> &);
244 void cvtStExtTWriteBackReg(MCInst &Inst,
245 const SmallVectorImpl<MCParsedAsmOperand*> &);
246 void cvtLdrdPre(MCInst &Inst, const SmallVectorImpl<MCParsedAsmOperand*> &);
247 void cvtStrdPre(MCInst &Inst, const SmallVectorImpl<MCParsedAsmOperand*> &);
248 void cvtLdWriteBackRegAddrMode3(MCInst &Inst,
249 const SmallVectorImpl<MCParsedAsmOperand*> &);
250 void cvtThumbMultiply(MCInst &Inst,
251 const SmallVectorImpl<MCParsedAsmOperand*> &);
252 void cvtVLDwbFixed(MCInst &Inst,
253 const SmallVectorImpl<MCParsedAsmOperand*> &);
254 void cvtVLDwbRegister(MCInst &Inst,
255 const SmallVectorImpl<MCParsedAsmOperand*> &);
256 void cvtVSTwbFixed(MCInst &Inst,
257 const SmallVectorImpl<MCParsedAsmOperand*> &);
258 void cvtVSTwbRegister(MCInst &Inst,
259 const SmallVectorImpl<MCParsedAsmOperand*> &);
260 bool validateInstruction(MCInst &Inst,
261 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
262 bool processInstruction(MCInst &Inst,
263 const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
264 bool shouldOmitCCOutOperand(StringRef Mnemonic,
265 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
266 bool shouldOmitPredicateOperand(StringRef Mnemonic,
267 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
270 enum ARMMatchResultTy {
271 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
272 Match_RequiresNotITBlock,
274 Match_RequiresThumb2,
275 #define GET_OPERAND_DIAGNOSTIC_TYPES
276 #include "ARMGenAsmMatcher.inc"
280 ARMAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser)
281 : MCTargetAsmParser(), STI(_STI), Parser(_Parser), FPReg(-1) {
282 MCAsmParserExtension::Initialize(_Parser);
284 // Cache the MCRegisterInfo.
285 MRI = getContext().getRegisterInfo();
287 // Initialize the set of available features.
288 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
290 // Not in an ITBlock to start with.
291 ITState.CurPosition = ~0U;
293 // Set ELF header flags.
294 // FIXME: This should eventually end up somewhere else where more
295 // intelligent flag decisions can be made. For now we are just maintaining
296 // the statu/parseDirects quo for ARM and setting EF_ARM_EABI_VER5 as the default.
297 if (MCELFStreamer *MES = dyn_cast<MCELFStreamer>(&Parser.getStreamer()))
298 MES->getAssembler().setELFHeaderEFlags(ELF::EF_ARM_EABI_VER5);
301 // Implementation of the MCTargetAsmParser interface:
302 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
303 bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
305 SmallVectorImpl<MCParsedAsmOperand*> &Operands);
306 bool ParseDirective(AsmToken DirectiveID);
308 unsigned validateTargetOperandClass(MCParsedAsmOperand *Op, unsigned Kind);
309 unsigned checkTargetMatchPredicate(MCInst &Inst);
311 bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
312 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
313 MCStreamer &Out, unsigned &ErrorInfo,
314 bool MatchingInlineAsm);
316 } // end anonymous namespace
320 /// ARMOperand - Instances of this class represent a parsed ARM machine
322 class ARMOperand : public MCParsedAsmOperand {
332 k_InstSyncBarrierOpt,
343 k_VectorListAllLanes,
349 k_BitfieldDescriptor,
353 SMLoc StartLoc, EndLoc;
354 SmallVector<unsigned, 8> Registers;
357 ARMCC::CondCodes Val;
364 struct CoprocOptionOp {
377 ARM_ISB::InstSyncBOpt Val;
381 ARM_PROC::IFlags Val;
397 // A vector register list is a sequential list of 1 to 4 registers.
398 struct VectorListOp {
405 struct VectorIndexOp {
413 /// Combined record for all forms of ARM address expressions.
416 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
418 const MCConstantExpr *OffsetImm; // Offset immediate value
419 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
420 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
421 unsigned ShiftImm; // shift for OffsetReg.
422 unsigned Alignment; // 0 = no alignment specified
423 // n = alignment in bytes (2, 4, 8, 16, or 32)
424 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
427 struct PostIdxRegOp {
430 ARM_AM::ShiftOpc ShiftTy;
434 struct ShifterImmOp {
439 struct RegShiftedRegOp {
440 ARM_AM::ShiftOpc ShiftTy;
446 struct RegShiftedImmOp {
447 ARM_AM::ShiftOpc ShiftTy;
464 struct CoprocOptionOp CoprocOption;
465 struct MBOptOp MBOpt;
466 struct ISBOptOp ISBOpt;
467 struct ITMaskOp ITMask;
468 struct IFlagsOp IFlags;
469 struct MMaskOp MMask;
472 struct VectorListOp VectorList;
473 struct VectorIndexOp VectorIndex;
475 struct MemoryOp Memory;
476 struct PostIdxRegOp PostIdxReg;
477 struct ShifterImmOp ShifterImm;
478 struct RegShiftedRegOp RegShiftedReg;
479 struct RegShiftedImmOp RegShiftedImm;
480 struct RotImmOp RotImm;
481 struct BitfieldOp Bitfield;
484 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
486 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
488 StartLoc = o.StartLoc;
505 case k_DPRRegisterList:
506 case k_SPRRegisterList:
507 Registers = o.Registers;
510 case k_VectorListAllLanes:
511 case k_VectorListIndexed:
512 VectorList = o.VectorList;
519 CoprocOption = o.CoprocOption;
524 case k_MemBarrierOpt:
527 case k_InstSyncBarrierOpt:
532 case k_PostIndexRegister:
533 PostIdxReg = o.PostIdxReg;
541 case k_ShifterImmediate:
542 ShifterImm = o.ShifterImm;
544 case k_ShiftedRegister:
545 RegShiftedReg = o.RegShiftedReg;
547 case k_ShiftedImmediate:
548 RegShiftedImm = o.RegShiftedImm;
550 case k_RotateImmediate:
553 case k_BitfieldDescriptor:
554 Bitfield = o.Bitfield;
557 VectorIndex = o.VectorIndex;
562 /// getStartLoc - Get the location of the first token of this operand.
563 SMLoc getStartLoc() const { return StartLoc; }
564 /// getEndLoc - Get the location of the last token of this operand.
565 SMLoc getEndLoc() const { return EndLoc; }
566 /// getLocRange - Get the range between the first and last token of this
568 SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
570 ARMCC::CondCodes getCondCode() const {
571 assert(Kind == k_CondCode && "Invalid access!");
575 unsigned getCoproc() const {
576 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
580 StringRef getToken() const {
581 assert(Kind == k_Token && "Invalid access!");
582 return StringRef(Tok.Data, Tok.Length);
585 unsigned getReg() const {
586 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
590 const SmallVectorImpl<unsigned> &getRegList() const {
591 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
592 Kind == k_SPRRegisterList) && "Invalid access!");
596 const MCExpr *getImm() const {
597 assert(isImm() && "Invalid access!");
601 unsigned getVectorIndex() const {
602 assert(Kind == k_VectorIndex && "Invalid access!");
603 return VectorIndex.Val;
606 ARM_MB::MemBOpt getMemBarrierOpt() const {
607 assert(Kind == k_MemBarrierOpt && "Invalid access!");
611 ARM_ISB::InstSyncBOpt getInstSyncBarrierOpt() const {
612 assert(Kind == k_InstSyncBarrierOpt && "Invalid access!");
616 ARM_PROC::IFlags getProcIFlags() const {
617 assert(Kind == k_ProcIFlags && "Invalid access!");
621 unsigned getMSRMask() const {
622 assert(Kind == k_MSRMask && "Invalid access!");
626 bool isCoprocNum() const { return Kind == k_CoprocNum; }
627 bool isCoprocReg() const { return Kind == k_CoprocReg; }
628 bool isCoprocOption() const { return Kind == k_CoprocOption; }
629 bool isCondCode() const { return Kind == k_CondCode; }
630 bool isCCOut() const { return Kind == k_CCOut; }
631 bool isITMask() const { return Kind == k_ITCondMask; }
632 bool isITCondCode() const { return Kind == k_CondCode; }
633 bool isImm() const { return Kind == k_Immediate; }
634 // checks whether this operand is an unsigned offset which fits is a field
635 // of specified width and scaled by a specific number of bits
636 template<unsigned width, unsigned scale>
637 bool isUnsignedOffset() const {
638 if (!isImm()) return false;
639 if (dyn_cast<MCSymbolRefExpr>(Imm.Val)) return true;
640 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
641 int64_t Val = CE->getValue();
642 int64_t Align = 1LL << scale;
643 int64_t Max = Align * ((1LL << width) - 1);
644 return ((Val % Align) == 0) && (Val >= 0) && (Val <= Max);
648 bool isFPImm() const {
649 if (!isImm()) return false;
650 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
651 if (!CE) return false;
652 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
655 bool isFBits16() const {
656 if (!isImm()) return false;
657 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
658 if (!CE) return false;
659 int64_t Value = CE->getValue();
660 return Value >= 0 && Value <= 16;
662 bool isFBits32() const {
663 if (!isImm()) return false;
664 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
665 if (!CE) return false;
666 int64_t Value = CE->getValue();
667 return Value >= 1 && Value <= 32;
669 bool isImm8s4() const {
670 if (!isImm()) return false;
671 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
672 if (!CE) return false;
673 int64_t Value = CE->getValue();
674 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
676 bool isImm0_4() const {
677 if (!isImm()) return false;
678 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
679 if (!CE) return false;
680 int64_t Value = CE->getValue();
681 return Value >= 0 && Value < 5;
683 bool isImm0_1020s4() const {
684 if (!isImm()) return false;
685 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
686 if (!CE) return false;
687 int64_t Value = CE->getValue();
688 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
690 bool isImm0_508s4() const {
691 if (!isImm()) return false;
692 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
693 if (!CE) return false;
694 int64_t Value = CE->getValue();
695 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
697 bool isImm0_508s4Neg() const {
698 if (!isImm()) return false;
699 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
700 if (!CE) return false;
701 int64_t Value = -CE->getValue();
702 // explicitly exclude zero. we want that to use the normal 0_508 version.
703 return ((Value & 3) == 0) && Value > 0 && Value <= 508;
705 bool isImm0_255() const {
706 if (!isImm()) return false;
707 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
708 if (!CE) return false;
709 int64_t Value = CE->getValue();
710 return Value >= 0 && Value < 256;
712 bool isImm0_4095() const {
713 if (!isImm()) return false;
714 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
715 if (!CE) return false;
716 int64_t Value = CE->getValue();
717 return Value >= 0 && Value < 4096;
719 bool isImm0_4095Neg() const {
720 if (!isImm()) return false;
721 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
722 if (!CE) return false;
723 int64_t Value = -CE->getValue();
724 return Value > 0 && Value < 4096;
726 bool isImm0_1() const {
727 if (!isImm()) return false;
728 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
729 if (!CE) return false;
730 int64_t Value = CE->getValue();
731 return Value >= 0 && Value < 2;
733 bool isImm0_3() const {
734 if (!isImm()) return false;
735 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
736 if (!CE) return false;
737 int64_t Value = CE->getValue();
738 return Value >= 0 && Value < 4;
740 bool isImm0_7() const {
741 if (!isImm()) return false;
742 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
743 if (!CE) return false;
744 int64_t Value = CE->getValue();
745 return Value >= 0 && Value < 8;
747 bool isImm0_15() const {
748 if (!isImm()) return false;
749 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
750 if (!CE) return false;
751 int64_t Value = CE->getValue();
752 return Value >= 0 && Value < 16;
754 bool isImm0_31() const {
755 if (!isImm()) return false;
756 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
757 if (!CE) return false;
758 int64_t Value = CE->getValue();
759 return Value >= 0 && Value < 32;
761 bool isImm0_63() const {
762 if (!isImm()) return false;
763 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
764 if (!CE) return false;
765 int64_t Value = CE->getValue();
766 return Value >= 0 && Value < 64;
768 bool isImm8() const {
769 if (!isImm()) return false;
770 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
771 if (!CE) return false;
772 int64_t Value = CE->getValue();
775 bool isImm16() const {
776 if (!isImm()) return false;
777 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
778 if (!CE) return false;
779 int64_t Value = CE->getValue();
782 bool isImm32() const {
783 if (!isImm()) return false;
784 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
785 if (!CE) return false;
786 int64_t Value = CE->getValue();
789 bool isShrImm8() const {
790 if (!isImm()) return false;
791 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
792 if (!CE) return false;
793 int64_t Value = CE->getValue();
794 return Value > 0 && Value <= 8;
796 bool isShrImm16() const {
797 if (!isImm()) return false;
798 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
799 if (!CE) return false;
800 int64_t Value = CE->getValue();
801 return Value > 0 && Value <= 16;
803 bool isShrImm32() const {
804 if (!isImm()) return false;
805 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
806 if (!CE) return false;
807 int64_t Value = CE->getValue();
808 return Value > 0 && Value <= 32;
810 bool isShrImm64() const {
811 if (!isImm()) return false;
812 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
813 if (!CE) return false;
814 int64_t Value = CE->getValue();
815 return Value > 0 && Value <= 64;
817 bool isImm1_7() const {
818 if (!isImm()) return false;
819 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
820 if (!CE) return false;
821 int64_t Value = CE->getValue();
822 return Value > 0 && Value < 8;
824 bool isImm1_15() const {
825 if (!isImm()) return false;
826 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
827 if (!CE) return false;
828 int64_t Value = CE->getValue();
829 return Value > 0 && Value < 16;
831 bool isImm1_31() const {
832 if (!isImm()) return false;
833 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
834 if (!CE) return false;
835 int64_t Value = CE->getValue();
836 return Value > 0 && Value < 32;
838 bool isImm1_16() const {
839 if (!isImm()) return false;
840 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
841 if (!CE) return false;
842 int64_t Value = CE->getValue();
843 return Value > 0 && Value < 17;
845 bool isImm1_32() const {
846 if (!isImm()) return false;
847 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
848 if (!CE) return false;
849 int64_t Value = CE->getValue();
850 return Value > 0 && Value < 33;
852 bool isImm0_32() const {
853 if (!isImm()) return false;
854 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
855 if (!CE) return false;
856 int64_t Value = CE->getValue();
857 return Value >= 0 && Value < 33;
859 bool isImm0_65535() const {
860 if (!isImm()) return false;
861 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
862 if (!CE) return false;
863 int64_t Value = CE->getValue();
864 return Value >= 0 && Value < 65536;
866 bool isImm0_65535Expr() const {
867 if (!isImm()) return false;
868 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
869 // If it's not a constant expression, it'll generate a fixup and be
871 if (!CE) return true;
872 int64_t Value = CE->getValue();
873 return Value >= 0 && Value < 65536;
875 bool isImm24bit() const {
876 if (!isImm()) return false;
877 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
878 if (!CE) return false;
879 int64_t Value = CE->getValue();
880 return Value >= 0 && Value <= 0xffffff;
882 bool isImmThumbSR() const {
883 if (!isImm()) return false;
884 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
885 if (!CE) return false;
886 int64_t Value = CE->getValue();
887 return Value > 0 && Value < 33;
889 bool isPKHLSLImm() const {
890 if (!isImm()) return false;
891 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
892 if (!CE) return false;
893 int64_t Value = CE->getValue();
894 return Value >= 0 && Value < 32;
896 bool isPKHASRImm() const {
897 if (!isImm()) return false;
898 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
899 if (!CE) return false;
900 int64_t Value = CE->getValue();
901 return Value > 0 && Value <= 32;
903 bool isAdrLabel() const {
904 // If we have an immediate that's not a constant, treat it as a label
905 // reference needing a fixup. If it is a constant, but it can't fit
906 // into shift immediate encoding, we reject it.
907 if (isImm() && !isa<MCConstantExpr>(getImm())) return true;
908 else return (isARMSOImm() || isARMSOImmNeg());
910 bool isARMSOImm() const {
911 if (!isImm()) return false;
912 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
913 if (!CE) return false;
914 int64_t Value = CE->getValue();
915 return ARM_AM::getSOImmVal(Value) != -1;
917 bool isARMSOImmNot() const {
918 if (!isImm()) return false;
919 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
920 if (!CE) return false;
921 int64_t Value = CE->getValue();
922 return ARM_AM::getSOImmVal(~Value) != -1;
924 bool isARMSOImmNeg() const {
925 if (!isImm()) return false;
926 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
927 if (!CE) return false;
928 int64_t Value = CE->getValue();
929 // Only use this when not representable as a plain so_imm.
930 return ARM_AM::getSOImmVal(Value) == -1 &&
931 ARM_AM::getSOImmVal(-Value) != -1;
933 bool isT2SOImm() const {
934 if (!isImm()) return false;
935 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
936 if (!CE) return false;
937 int64_t Value = CE->getValue();
938 return ARM_AM::getT2SOImmVal(Value) != -1;
940 bool isT2SOImmNot() const {
941 if (!isImm()) return false;
942 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
943 if (!CE) return false;
944 int64_t Value = CE->getValue();
945 return ARM_AM::getT2SOImmVal(~Value) != -1;
947 bool isT2SOImmNeg() const {
948 if (!isImm()) return false;
949 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
950 if (!CE) return false;
951 int64_t Value = CE->getValue();
952 // Only use this when not representable as a plain so_imm.
953 return ARM_AM::getT2SOImmVal(Value) == -1 &&
954 ARM_AM::getT2SOImmVal(-Value) != -1;
956 bool isSetEndImm() const {
957 if (!isImm()) return false;
958 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
959 if (!CE) return false;
960 int64_t Value = CE->getValue();
961 return Value == 1 || Value == 0;
963 bool isReg() const { return Kind == k_Register; }
964 bool isRegList() const { return Kind == k_RegisterList; }
965 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
966 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
967 bool isToken() const { return Kind == k_Token; }
968 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
969 bool isInstSyncBarrierOpt() const { return Kind == k_InstSyncBarrierOpt; }
970 bool isMem() const { return Kind == k_Memory; }
971 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
972 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
973 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
974 bool isRotImm() const { return Kind == k_RotateImmediate; }
975 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
976 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
977 bool isPostIdxReg() const {
978 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
980 bool isMemNoOffset(bool alignOK = false) const {
983 // No offset of any kind.
984 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == 0 &&
985 (alignOK || Memory.Alignment == 0);
987 bool isMemPCRelImm12() const {
988 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
990 // Base register must be PC.
991 if (Memory.BaseRegNum != ARM::PC)
993 // Immediate offset in range [-4095, 4095].
994 if (!Memory.OffsetImm) return true;
995 int64_t Val = Memory.OffsetImm->getValue();
996 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
998 bool isAlignedMemory() const {
999 return isMemNoOffset(true);
1001 bool isAddrMode2() const {
1002 if (!isMem() || Memory.Alignment != 0) return false;
1003 // Check for register offset.
1004 if (Memory.OffsetRegNum) return true;
1005 // Immediate offset in range [-4095, 4095].
1006 if (!Memory.OffsetImm) return true;
1007 int64_t Val = Memory.OffsetImm->getValue();
1008 return Val > -4096 && Val < 4096;
1010 bool isAM2OffsetImm() const {
1011 if (!isImm()) return false;
1012 // Immediate offset in range [-4095, 4095].
1013 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1014 if (!CE) return false;
1015 int64_t Val = CE->getValue();
1016 return (Val == INT32_MIN) || (Val > -4096 && Val < 4096);
1018 bool isAddrMode3() const {
1019 // If we have an immediate that's not a constant, treat it as a label
1020 // reference needing a fixup. If it is a constant, it's something else
1021 // and we reject it.
1022 if (isImm() && !isa<MCConstantExpr>(getImm()))
1024 if (!isMem() || Memory.Alignment != 0) return false;
1025 // No shifts are legal for AM3.
1026 if (Memory.ShiftType != ARM_AM::no_shift) return false;
1027 // Check for register offset.
1028 if (Memory.OffsetRegNum) return true;
1029 // Immediate offset in range [-255, 255].
1030 if (!Memory.OffsetImm) return true;
1031 int64_t Val = Memory.OffsetImm->getValue();
1032 // The #-0 offset is encoded as INT32_MIN, and we have to check
1034 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1036 bool isAM3Offset() const {
1037 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
1039 if (Kind == k_PostIndexRegister)
1040 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
1041 // Immediate offset in range [-255, 255].
1042 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1043 if (!CE) return false;
1044 int64_t Val = CE->getValue();
1045 // Special case, #-0 is INT32_MIN.
1046 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1048 bool isAddrMode5() const {
1049 // If we have an immediate that's not a constant, treat it as a label
1050 // reference needing a fixup. If it is a constant, it's something else
1051 // and we reject it.
1052 if (isImm() && !isa<MCConstantExpr>(getImm()))
1054 if (!isMem() || Memory.Alignment != 0) return false;
1055 // Check for register offset.
1056 if (Memory.OffsetRegNum) return false;
1057 // Immediate offset in range [-1020, 1020] and a multiple of 4.
1058 if (!Memory.OffsetImm) return true;
1059 int64_t Val = Memory.OffsetImm->getValue();
1060 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
1063 bool isMemTBB() const {
1064 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1065 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1069 bool isMemTBH() const {
1070 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1071 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
1072 Memory.Alignment != 0 )
1076 bool isMemRegOffset() const {
1077 if (!isMem() || !Memory.OffsetRegNum || Memory.Alignment != 0)
1081 bool isT2MemRegOffset() const {
1082 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1083 Memory.Alignment != 0)
1085 // Only lsl #{0, 1, 2, 3} allowed.
1086 if (Memory.ShiftType == ARM_AM::no_shift)
1088 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
1092 bool isMemThumbRR() const {
1093 // Thumb reg+reg addressing is simple. Just two registers, a base and
1094 // an offset. No shifts, negations or any other complicating factors.
1095 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1096 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1098 return isARMLowRegister(Memory.BaseRegNum) &&
1099 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
1101 bool isMemThumbRIs4() const {
1102 if (!isMem() || Memory.OffsetRegNum != 0 ||
1103 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1105 // Immediate offset, multiple of 4 in range [0, 124].
1106 if (!Memory.OffsetImm) return true;
1107 int64_t Val = Memory.OffsetImm->getValue();
1108 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
1110 bool isMemThumbRIs2() const {
1111 if (!isMem() || Memory.OffsetRegNum != 0 ||
1112 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1114 // Immediate offset, multiple of 4 in range [0, 62].
1115 if (!Memory.OffsetImm) return true;
1116 int64_t Val = Memory.OffsetImm->getValue();
1117 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
1119 bool isMemThumbRIs1() const {
1120 if (!isMem() || Memory.OffsetRegNum != 0 ||
1121 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1123 // Immediate offset in range [0, 31].
1124 if (!Memory.OffsetImm) return true;
1125 int64_t Val = Memory.OffsetImm->getValue();
1126 return Val >= 0 && Val <= 31;
1128 bool isMemThumbSPI() const {
1129 if (!isMem() || Memory.OffsetRegNum != 0 ||
1130 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
1132 // Immediate offset, multiple of 4 in range [0, 1020].
1133 if (!Memory.OffsetImm) return true;
1134 int64_t Val = Memory.OffsetImm->getValue();
1135 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
1137 bool isMemImm8s4Offset() const {
1138 // If we have an immediate that's not a constant, treat it as a label
1139 // reference needing a fixup. If it is a constant, it's something else
1140 // and we reject it.
1141 if (isImm() && !isa<MCConstantExpr>(getImm()))
1143 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1145 // Immediate offset a multiple of 4 in range [-1020, 1020].
1146 if (!Memory.OffsetImm) return true;
1147 int64_t Val = Memory.OffsetImm->getValue();
1148 // Special case, #-0 is INT32_MIN.
1149 return (Val >= -1020 && Val <= 1020 && (Val & 3) == 0) || Val == INT32_MIN;
1151 bool isMemImm0_1020s4Offset() const {
1152 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1154 // Immediate offset a multiple of 4 in range [0, 1020].
1155 if (!Memory.OffsetImm) return true;
1156 int64_t Val = Memory.OffsetImm->getValue();
1157 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1159 bool isMemImm8Offset() const {
1160 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1162 // Base reg of PC isn't allowed for these encodings.
1163 if (Memory.BaseRegNum == ARM::PC) return false;
1164 // Immediate offset in range [-255, 255].
1165 if (!Memory.OffsetImm) return true;
1166 int64_t Val = Memory.OffsetImm->getValue();
1167 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1169 bool isMemPosImm8Offset() const {
1170 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1172 // Immediate offset in range [0, 255].
1173 if (!Memory.OffsetImm) return true;
1174 int64_t Val = Memory.OffsetImm->getValue();
1175 return Val >= 0 && Val < 256;
1177 bool isMemNegImm8Offset() const {
1178 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1180 // Base reg of PC isn't allowed for these encodings.
1181 if (Memory.BaseRegNum == ARM::PC) return false;
1182 // Immediate offset in range [-255, -1].
1183 if (!Memory.OffsetImm) return false;
1184 int64_t Val = Memory.OffsetImm->getValue();
1185 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1187 bool isMemUImm12Offset() const {
1188 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1190 // Immediate offset in range [0, 4095].
1191 if (!Memory.OffsetImm) return true;
1192 int64_t Val = Memory.OffsetImm->getValue();
1193 return (Val >= 0 && Val < 4096);
1195 bool isMemImm12Offset() const {
1196 // If we have an immediate that's not a constant, treat it as a label
1197 // reference needing a fixup. If it is a constant, it's something else
1198 // and we reject it.
1199 if (isImm() && !isa<MCConstantExpr>(getImm()))
1202 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1204 // Immediate offset in range [-4095, 4095].
1205 if (!Memory.OffsetImm) return true;
1206 int64_t Val = Memory.OffsetImm->getValue();
1207 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1209 bool isPostIdxImm8() const {
1210 if (!isImm()) return false;
1211 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1212 if (!CE) return false;
1213 int64_t Val = CE->getValue();
1214 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1216 bool isPostIdxImm8s4() const {
1217 if (!isImm()) return false;
1218 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1219 if (!CE) return false;
1220 int64_t Val = CE->getValue();
1221 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1225 bool isMSRMask() const { return Kind == k_MSRMask; }
1226 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1229 bool isSingleSpacedVectorList() const {
1230 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1232 bool isDoubleSpacedVectorList() const {
1233 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1235 bool isVecListOneD() const {
1236 if (!isSingleSpacedVectorList()) return false;
1237 return VectorList.Count == 1;
1240 bool isVecListDPair() const {
1241 if (!isSingleSpacedVectorList()) return false;
1242 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1243 .contains(VectorList.RegNum));
1246 bool isVecListThreeD() const {
1247 if (!isSingleSpacedVectorList()) return false;
1248 return VectorList.Count == 3;
1251 bool isVecListFourD() const {
1252 if (!isSingleSpacedVectorList()) return false;
1253 return VectorList.Count == 4;
1256 bool isVecListDPairSpaced() const {
1257 if (isSingleSpacedVectorList()) return false;
1258 return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID]
1259 .contains(VectorList.RegNum));
1262 bool isVecListThreeQ() const {
1263 if (!isDoubleSpacedVectorList()) return false;
1264 return VectorList.Count == 3;
1267 bool isVecListFourQ() const {
1268 if (!isDoubleSpacedVectorList()) return false;
1269 return VectorList.Count == 4;
1272 bool isSingleSpacedVectorAllLanes() const {
1273 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1275 bool isDoubleSpacedVectorAllLanes() const {
1276 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1278 bool isVecListOneDAllLanes() const {
1279 if (!isSingleSpacedVectorAllLanes()) return false;
1280 return VectorList.Count == 1;
1283 bool isVecListDPairAllLanes() const {
1284 if (!isSingleSpacedVectorAllLanes()) return false;
1285 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1286 .contains(VectorList.RegNum));
1289 bool isVecListDPairSpacedAllLanes() const {
1290 if (!isDoubleSpacedVectorAllLanes()) return false;
1291 return VectorList.Count == 2;
1294 bool isVecListThreeDAllLanes() const {
1295 if (!isSingleSpacedVectorAllLanes()) return false;
1296 return VectorList.Count == 3;
1299 bool isVecListThreeQAllLanes() const {
1300 if (!isDoubleSpacedVectorAllLanes()) return false;
1301 return VectorList.Count == 3;
1304 bool isVecListFourDAllLanes() const {
1305 if (!isSingleSpacedVectorAllLanes()) return false;
1306 return VectorList.Count == 4;
1309 bool isVecListFourQAllLanes() const {
1310 if (!isDoubleSpacedVectorAllLanes()) return false;
1311 return VectorList.Count == 4;
1314 bool isSingleSpacedVectorIndexed() const {
1315 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1317 bool isDoubleSpacedVectorIndexed() const {
1318 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1320 bool isVecListOneDByteIndexed() const {
1321 if (!isSingleSpacedVectorIndexed()) return false;
1322 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1325 bool isVecListOneDHWordIndexed() const {
1326 if (!isSingleSpacedVectorIndexed()) return false;
1327 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1330 bool isVecListOneDWordIndexed() const {
1331 if (!isSingleSpacedVectorIndexed()) return false;
1332 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1335 bool isVecListTwoDByteIndexed() const {
1336 if (!isSingleSpacedVectorIndexed()) return false;
1337 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1340 bool isVecListTwoDHWordIndexed() const {
1341 if (!isSingleSpacedVectorIndexed()) return false;
1342 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1345 bool isVecListTwoQWordIndexed() const {
1346 if (!isDoubleSpacedVectorIndexed()) return false;
1347 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1350 bool isVecListTwoQHWordIndexed() const {
1351 if (!isDoubleSpacedVectorIndexed()) return false;
1352 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1355 bool isVecListTwoDWordIndexed() const {
1356 if (!isSingleSpacedVectorIndexed()) return false;
1357 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1360 bool isVecListThreeDByteIndexed() const {
1361 if (!isSingleSpacedVectorIndexed()) return false;
1362 return VectorList.Count == 3 && VectorList.LaneIndex <= 7;
1365 bool isVecListThreeDHWordIndexed() const {
1366 if (!isSingleSpacedVectorIndexed()) return false;
1367 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1370 bool isVecListThreeQWordIndexed() const {
1371 if (!isDoubleSpacedVectorIndexed()) return false;
1372 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1375 bool isVecListThreeQHWordIndexed() const {
1376 if (!isDoubleSpacedVectorIndexed()) return false;
1377 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1380 bool isVecListThreeDWordIndexed() const {
1381 if (!isSingleSpacedVectorIndexed()) return false;
1382 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1385 bool isVecListFourDByteIndexed() const {
1386 if (!isSingleSpacedVectorIndexed()) return false;
1387 return VectorList.Count == 4 && VectorList.LaneIndex <= 7;
1390 bool isVecListFourDHWordIndexed() const {
1391 if (!isSingleSpacedVectorIndexed()) return false;
1392 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1395 bool isVecListFourQWordIndexed() const {
1396 if (!isDoubleSpacedVectorIndexed()) return false;
1397 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1400 bool isVecListFourQHWordIndexed() const {
1401 if (!isDoubleSpacedVectorIndexed()) return false;
1402 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1405 bool isVecListFourDWordIndexed() const {
1406 if (!isSingleSpacedVectorIndexed()) return false;
1407 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1410 bool isVectorIndex8() const {
1411 if (Kind != k_VectorIndex) return false;
1412 return VectorIndex.Val < 8;
1414 bool isVectorIndex16() const {
1415 if (Kind != k_VectorIndex) return false;
1416 return VectorIndex.Val < 4;
1418 bool isVectorIndex32() const {
1419 if (Kind != k_VectorIndex) return false;
1420 return VectorIndex.Val < 2;
1423 bool isNEONi8splat() const {
1424 if (!isImm()) return false;
1425 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1426 // Must be a constant.
1427 if (!CE) return false;
1428 int64_t Value = CE->getValue();
1429 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1431 return Value >= 0 && Value < 256;
1434 bool isNEONi16splat() const {
1435 if (!isImm()) return false;
1436 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1437 // Must be a constant.
1438 if (!CE) return false;
1439 int64_t Value = CE->getValue();
1440 // i16 value in the range [0,255] or [0x0100, 0xff00]
1441 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1444 bool isNEONi32splat() const {
1445 if (!isImm()) return false;
1446 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1447 // Must be a constant.
1448 if (!CE) return false;
1449 int64_t Value = CE->getValue();
1450 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1451 return (Value >= 0 && Value < 256) ||
1452 (Value >= 0x0100 && Value <= 0xff00) ||
1453 (Value >= 0x010000 && Value <= 0xff0000) ||
1454 (Value >= 0x01000000 && Value <= 0xff000000);
1457 bool isNEONi32vmov() const {
1458 if (!isImm()) return false;
1459 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1460 // Must be a constant.
1461 if (!CE) return false;
1462 int64_t Value = CE->getValue();
1463 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1464 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1465 return (Value >= 0 && Value < 256) ||
1466 (Value >= 0x0100 && Value <= 0xff00) ||
1467 (Value >= 0x010000 && Value <= 0xff0000) ||
1468 (Value >= 0x01000000 && Value <= 0xff000000) ||
1469 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1470 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1472 bool isNEONi32vmovNeg() const {
1473 if (!isImm()) return false;
1474 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1475 // Must be a constant.
1476 if (!CE) return false;
1477 int64_t Value = ~CE->getValue();
1478 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1479 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1480 return (Value >= 0 && Value < 256) ||
1481 (Value >= 0x0100 && Value <= 0xff00) ||
1482 (Value >= 0x010000 && Value <= 0xff0000) ||
1483 (Value >= 0x01000000 && Value <= 0xff000000) ||
1484 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1485 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1488 bool isNEONi64splat() const {
1489 if (!isImm()) return false;
1490 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1491 // Must be a constant.
1492 if (!CE) return false;
1493 uint64_t Value = CE->getValue();
1494 // i64 value with each byte being either 0 or 0xff.
1495 for (unsigned i = 0; i < 8; ++i)
1496 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1500 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1501 // Add as immediates when possible. Null MCExpr = 0.
1503 Inst.addOperand(MCOperand::CreateImm(0));
1504 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1505 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1507 Inst.addOperand(MCOperand::CreateExpr(Expr));
1510 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1511 assert(N == 2 && "Invalid number of operands!");
1512 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1513 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1514 Inst.addOperand(MCOperand::CreateReg(RegNum));
1517 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1518 assert(N == 1 && "Invalid number of operands!");
1519 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1522 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1523 assert(N == 1 && "Invalid number of operands!");
1524 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1527 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1528 assert(N == 1 && "Invalid number of operands!");
1529 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1532 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1533 assert(N == 1 && "Invalid number of operands!");
1534 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1537 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1538 assert(N == 1 && "Invalid number of operands!");
1539 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1542 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1543 assert(N == 1 && "Invalid number of operands!");
1544 Inst.addOperand(MCOperand::CreateReg(getReg()));
1547 void addRegOperands(MCInst &Inst, unsigned N) const {
1548 assert(N == 1 && "Invalid number of operands!");
1549 Inst.addOperand(MCOperand::CreateReg(getReg()));
1552 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1553 assert(N == 3 && "Invalid number of operands!");
1554 assert(isRegShiftedReg() &&
1555 "addRegShiftedRegOperands() on non RegShiftedReg!");
1556 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1557 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1558 Inst.addOperand(MCOperand::CreateImm(
1559 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1562 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1563 assert(N == 2 && "Invalid number of operands!");
1564 assert(isRegShiftedImm() &&
1565 "addRegShiftedImmOperands() on non RegShiftedImm!");
1566 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1567 // Shift of #32 is encoded as 0 where permitted
1568 unsigned Imm = (RegShiftedImm.ShiftImm == 32 ? 0 : RegShiftedImm.ShiftImm);
1569 Inst.addOperand(MCOperand::CreateImm(
1570 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, Imm)));
1573 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1574 assert(N == 1 && "Invalid number of operands!");
1575 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1579 void addRegListOperands(MCInst &Inst, unsigned N) const {
1580 assert(N == 1 && "Invalid number of operands!");
1581 const SmallVectorImpl<unsigned> &RegList = getRegList();
1582 for (SmallVectorImpl<unsigned>::const_iterator
1583 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1584 Inst.addOperand(MCOperand::CreateReg(*I));
1587 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1588 addRegListOperands(Inst, N);
1591 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1592 addRegListOperands(Inst, N);
1595 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1596 assert(N == 1 && "Invalid number of operands!");
1597 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1598 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1601 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1602 assert(N == 1 && "Invalid number of operands!");
1603 // Munge the lsb/width into a bitfield mask.
1604 unsigned lsb = Bitfield.LSB;
1605 unsigned width = Bitfield.Width;
1606 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1607 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1608 (32 - (lsb + width)));
1609 Inst.addOperand(MCOperand::CreateImm(Mask));
1612 void addImmOperands(MCInst &Inst, unsigned N) const {
1613 assert(N == 1 && "Invalid number of operands!");
1614 addExpr(Inst, getImm());
1617 void addFBits16Operands(MCInst &Inst, unsigned N) const {
1618 assert(N == 1 && "Invalid number of operands!");
1619 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1620 Inst.addOperand(MCOperand::CreateImm(16 - CE->getValue()));
1623 void addFBits32Operands(MCInst &Inst, unsigned N) const {
1624 assert(N == 1 && "Invalid number of operands!");
1625 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1626 Inst.addOperand(MCOperand::CreateImm(32 - CE->getValue()));
1629 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1630 assert(N == 1 && "Invalid number of operands!");
1631 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1632 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
1633 Inst.addOperand(MCOperand::CreateImm(Val));
1636 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1637 assert(N == 1 && "Invalid number of operands!");
1638 // FIXME: We really want to scale the value here, but the LDRD/STRD
1639 // instruction don't encode operands that way yet.
1640 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1641 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1644 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1645 assert(N == 1 && "Invalid number of operands!");
1646 // The immediate is scaled by four in the encoding and is stored
1647 // in the MCInst as such. Lop off the low two bits here.
1648 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1649 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1652 void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const {
1653 assert(N == 1 && "Invalid number of operands!");
1654 // The immediate is scaled by four in the encoding and is stored
1655 // in the MCInst as such. Lop off the low two bits here.
1656 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1657 Inst.addOperand(MCOperand::CreateImm(-(CE->getValue() / 4)));
1660 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1661 assert(N == 1 && "Invalid number of operands!");
1662 // The immediate is scaled by four in the encoding and is stored
1663 // in the MCInst as such. Lop off the low two bits here.
1664 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1665 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1668 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1669 assert(N == 1 && "Invalid number of operands!");
1670 // The constant encodes as the immediate-1, and we store in the instruction
1671 // the bits as encoded, so subtract off one here.
1672 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1673 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1676 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1677 assert(N == 1 && "Invalid number of operands!");
1678 // The constant encodes as the immediate-1, and we store in the instruction
1679 // the bits as encoded, so subtract off one here.
1680 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1681 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1684 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1685 assert(N == 1 && "Invalid number of operands!");
1686 // The constant encodes as the immediate, except for 32, which encodes as
1688 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1689 unsigned Imm = CE->getValue();
1690 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1693 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1694 assert(N == 1 && "Invalid number of operands!");
1695 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1696 // the instruction as well.
1697 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1698 int Val = CE->getValue();
1699 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1702 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1703 assert(N == 1 && "Invalid number of operands!");
1704 // The operand is actually a t2_so_imm, but we have its bitwise
1705 // negation in the assembly source, so twiddle it here.
1706 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1707 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1710 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
1711 assert(N == 1 && "Invalid number of operands!");
1712 // The operand is actually a t2_so_imm, but we have its
1713 // negation in the assembly source, so twiddle it here.
1714 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1715 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1718 void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const {
1719 assert(N == 1 && "Invalid number of operands!");
1720 // The operand is actually an imm0_4095, but we have its
1721 // negation in the assembly source, so twiddle it here.
1722 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1723 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1726 void addUnsignedOffset_b8s2Operands(MCInst &Inst, unsigned N) const {
1727 if(const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) {
1728 Inst.addOperand(MCOperand::CreateImm(CE->getValue() >> 2));
1732 const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
1733 assert(SR && "Unknown value type!");
1734 Inst.addOperand(MCOperand::CreateExpr(SR));
1737 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1738 assert(N == 1 && "Invalid number of operands!");
1739 // The operand is actually a so_imm, but we have its bitwise
1740 // negation in the assembly source, so twiddle it here.
1741 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1742 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1745 void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
1746 assert(N == 1 && "Invalid number of operands!");
1747 // The operand is actually a so_imm, but we have its
1748 // negation in the assembly source, so twiddle it here.
1749 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1750 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1753 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1754 assert(N == 1 && "Invalid number of operands!");
1755 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1758 void addInstSyncBarrierOptOperands(MCInst &Inst, unsigned N) const {
1759 assert(N == 1 && "Invalid number of operands!");
1760 Inst.addOperand(MCOperand::CreateImm(unsigned(getInstSyncBarrierOpt())));
1763 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1764 assert(N == 1 && "Invalid number of operands!");
1765 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1768 void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
1769 assert(N == 1 && "Invalid number of operands!");
1770 int32_t Imm = Memory.OffsetImm->getValue();
1771 // FIXME: Handle #-0
1772 if (Imm == INT32_MIN) Imm = 0;
1773 Inst.addOperand(MCOperand::CreateImm(Imm));
1776 void addAdrLabelOperands(MCInst &Inst, unsigned N) const {
1777 assert(N == 1 && "Invalid number of operands!");
1778 assert(isImm() && "Not an immediate!");
1780 // If we have an immediate that's not a constant, treat it as a label
1781 // reference needing a fixup.
1782 if (!isa<MCConstantExpr>(getImm())) {
1783 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1787 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1788 int Val = CE->getValue();
1789 Inst.addOperand(MCOperand::CreateImm(Val));
1792 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
1793 assert(N == 2 && "Invalid number of operands!");
1794 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1795 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
1798 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
1799 assert(N == 3 && "Invalid number of operands!");
1800 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1801 if (!Memory.OffsetRegNum) {
1802 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1803 // Special case for #-0
1804 if (Val == INT32_MIN) Val = 0;
1805 if (Val < 0) Val = -Val;
1806 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1808 // For register offset, we encode the shift type and negation flag
1810 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1811 Memory.ShiftImm, Memory.ShiftType);
1813 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1814 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1815 Inst.addOperand(MCOperand::CreateImm(Val));
1818 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
1819 assert(N == 2 && "Invalid number of operands!");
1820 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1821 assert(CE && "non-constant AM2OffsetImm operand!");
1822 int32_t Val = CE->getValue();
1823 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1824 // Special case for #-0
1825 if (Val == INT32_MIN) Val = 0;
1826 if (Val < 0) Val = -Val;
1827 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
1828 Inst.addOperand(MCOperand::CreateReg(0));
1829 Inst.addOperand(MCOperand::CreateImm(Val));
1832 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
1833 assert(N == 3 && "Invalid number of operands!");
1834 // If we have an immediate that's not a constant, treat it as a label
1835 // reference needing a fixup. If it is a constant, it's something else
1836 // and we reject it.
1838 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1839 Inst.addOperand(MCOperand::CreateReg(0));
1840 Inst.addOperand(MCOperand::CreateImm(0));
1844 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1845 if (!Memory.OffsetRegNum) {
1846 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1847 // Special case for #-0
1848 if (Val == INT32_MIN) Val = 0;
1849 if (Val < 0) Val = -Val;
1850 Val = ARM_AM::getAM3Opc(AddSub, Val);
1852 // For register offset, we encode the shift type and negation flag
1854 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
1856 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1857 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1858 Inst.addOperand(MCOperand::CreateImm(Val));
1861 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
1862 assert(N == 2 && "Invalid number of operands!");
1863 if (Kind == k_PostIndexRegister) {
1865 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
1866 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
1867 Inst.addOperand(MCOperand::CreateImm(Val));
1872 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
1873 int32_t Val = CE->getValue();
1874 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1875 // Special case for #-0
1876 if (Val == INT32_MIN) Val = 0;
1877 if (Val < 0) Val = -Val;
1878 Val = ARM_AM::getAM3Opc(AddSub, Val);
1879 Inst.addOperand(MCOperand::CreateReg(0));
1880 Inst.addOperand(MCOperand::CreateImm(Val));
1883 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
1884 assert(N == 2 && "Invalid number of operands!");
1885 // If we have an immediate that's not a constant, treat it as a label
1886 // reference needing a fixup. If it is a constant, it's something else
1887 // and we reject it.
1889 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1890 Inst.addOperand(MCOperand::CreateImm(0));
1894 // The lower two bits are always zero and as such are not encoded.
1895 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1896 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
1897 // Special case for #-0
1898 if (Val == INT32_MIN) Val = 0;
1899 if (Val < 0) Val = -Val;
1900 Val = ARM_AM::getAM5Opc(AddSub, Val);
1901 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1902 Inst.addOperand(MCOperand::CreateImm(Val));
1905 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
1906 assert(N == 2 && "Invalid number of operands!");
1907 // If we have an immediate that's not a constant, treat it as a label
1908 // reference needing a fixup. If it is a constant, it's something else
1909 // and we reject it.
1911 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1912 Inst.addOperand(MCOperand::CreateImm(0));
1916 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1917 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1918 Inst.addOperand(MCOperand::CreateImm(Val));
1921 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
1922 assert(N == 2 && "Invalid number of operands!");
1923 // The lower two bits are always zero and as such are not encoded.
1924 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
1925 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1926 Inst.addOperand(MCOperand::CreateImm(Val));
1929 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1930 assert(N == 2 && "Invalid number of operands!");
1931 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1932 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1933 Inst.addOperand(MCOperand::CreateImm(Val));
1936 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1937 addMemImm8OffsetOperands(Inst, N);
1940 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
1941 addMemImm8OffsetOperands(Inst, N);
1944 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1945 assert(N == 2 && "Invalid number of operands!");
1946 // If this is an immediate, it's a label reference.
1948 addExpr(Inst, getImm());
1949 Inst.addOperand(MCOperand::CreateImm(0));
1953 // Otherwise, it's a normal memory reg+offset.
1954 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1955 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1956 Inst.addOperand(MCOperand::CreateImm(Val));
1959 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
1960 assert(N == 2 && "Invalid number of operands!");
1961 // If this is an immediate, it's a label reference.
1963 addExpr(Inst, getImm());
1964 Inst.addOperand(MCOperand::CreateImm(0));
1968 // Otherwise, it's a normal memory reg+offset.
1969 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
1970 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1971 Inst.addOperand(MCOperand::CreateImm(Val));
1974 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
1975 assert(N == 2 && "Invalid number of operands!");
1976 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1977 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1980 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
1981 assert(N == 2 && "Invalid number of operands!");
1982 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1983 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1986 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1987 assert(N == 3 && "Invalid number of operands!");
1989 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
1990 Memory.ShiftImm, Memory.ShiftType);
1991 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1992 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
1993 Inst.addOperand(MCOperand::CreateImm(Val));
1996 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
1997 assert(N == 3 && "Invalid number of operands!");
1998 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1999 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2000 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
2003 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
2004 assert(N == 2 && "Invalid number of operands!");
2005 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2006 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2009 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
2010 assert(N == 2 && "Invalid number of operands!");
2011 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2012 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2013 Inst.addOperand(MCOperand::CreateImm(Val));
2016 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
2017 assert(N == 2 && "Invalid number of operands!");
2018 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
2019 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2020 Inst.addOperand(MCOperand::CreateImm(Val));
2023 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
2024 assert(N == 2 && "Invalid number of operands!");
2025 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
2026 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2027 Inst.addOperand(MCOperand::CreateImm(Val));
2030 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
2031 assert(N == 2 && "Invalid number of operands!");
2032 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2033 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2034 Inst.addOperand(MCOperand::CreateImm(Val));
2037 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
2038 assert(N == 1 && "Invalid number of operands!");
2039 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2040 assert(CE && "non-constant post-idx-imm8 operand!");
2041 int Imm = CE->getValue();
2042 bool isAdd = Imm >= 0;
2043 if (Imm == INT32_MIN) Imm = 0;
2044 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
2045 Inst.addOperand(MCOperand::CreateImm(Imm));
2048 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
2049 assert(N == 1 && "Invalid number of operands!");
2050 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2051 assert(CE && "non-constant post-idx-imm8s4 operand!");
2052 int Imm = CE->getValue();
2053 bool isAdd = Imm >= 0;
2054 if (Imm == INT32_MIN) Imm = 0;
2055 // Immediate is scaled by 4.
2056 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
2057 Inst.addOperand(MCOperand::CreateImm(Imm));
2060 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
2061 assert(N == 2 && "Invalid number of operands!");
2062 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
2063 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
2066 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
2067 assert(N == 2 && "Invalid number of operands!");
2068 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
2069 // The sign, shift type, and shift amount are encoded in a single operand
2070 // using the AM2 encoding helpers.
2071 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
2072 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
2073 PostIdxReg.ShiftTy);
2074 Inst.addOperand(MCOperand::CreateImm(Imm));
2077 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
2078 assert(N == 1 && "Invalid number of operands!");
2079 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
2082 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
2083 assert(N == 1 && "Invalid number of operands!");
2084 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
2087 void addVecListOperands(MCInst &Inst, unsigned N) const {
2088 assert(N == 1 && "Invalid number of operands!");
2089 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
2092 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
2093 assert(N == 2 && "Invalid number of operands!");
2094 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
2095 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
2098 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
2099 assert(N == 1 && "Invalid number of operands!");
2100 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2103 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
2104 assert(N == 1 && "Invalid number of operands!");
2105 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2108 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
2109 assert(N == 1 && "Invalid number of operands!");
2110 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2113 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
2114 assert(N == 1 && "Invalid number of operands!");
2115 // The immediate encodes the type of constant as well as the value.
2116 // Mask in that this is an i8 splat.
2117 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2118 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
2121 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
2122 assert(N == 1 && "Invalid number of operands!");
2123 // The immediate encodes the type of constant as well as the value.
2124 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2125 unsigned Value = CE->getValue();
2127 Value = (Value >> 8) | 0xa00;
2130 Inst.addOperand(MCOperand::CreateImm(Value));
2133 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
2134 assert(N == 1 && "Invalid number of operands!");
2135 // The immediate encodes the type of constant as well as the value.
2136 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2137 unsigned Value = CE->getValue();
2138 if (Value >= 256 && Value <= 0xff00)
2139 Value = (Value >> 8) | 0x200;
2140 else if (Value > 0xffff && Value <= 0xff0000)
2141 Value = (Value >> 16) | 0x400;
2142 else if (Value > 0xffffff)
2143 Value = (Value >> 24) | 0x600;
2144 Inst.addOperand(MCOperand::CreateImm(Value));
2147 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
2148 assert(N == 1 && "Invalid number of operands!");
2149 // The immediate encodes the type of constant as well as the value.
2150 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2151 unsigned Value = CE->getValue();
2152 if (Value >= 256 && Value <= 0xffff)
2153 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2154 else if (Value > 0xffff && Value <= 0xffffff)
2155 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2156 else if (Value > 0xffffff)
2157 Value = (Value >> 24) | 0x600;
2158 Inst.addOperand(MCOperand::CreateImm(Value));
2161 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
2162 assert(N == 1 && "Invalid number of operands!");
2163 // The immediate encodes the type of constant as well as the value.
2164 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2165 unsigned Value = ~CE->getValue();
2166 if (Value >= 256 && Value <= 0xffff)
2167 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2168 else if (Value > 0xffff && Value <= 0xffffff)
2169 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2170 else if (Value > 0xffffff)
2171 Value = (Value >> 24) | 0x600;
2172 Inst.addOperand(MCOperand::CreateImm(Value));
2175 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
2176 assert(N == 1 && "Invalid number of operands!");
2177 // The immediate encodes the type of constant as well as the value.
2178 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2179 uint64_t Value = CE->getValue();
2181 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
2182 Imm |= (Value & 1) << i;
2184 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
2187 virtual void print(raw_ostream &OS) const;
2189 static ARMOperand *CreateITMask(unsigned Mask, SMLoc S) {
2190 ARMOperand *Op = new ARMOperand(k_ITCondMask);
2191 Op->ITMask.Mask = Mask;
2197 static ARMOperand *CreateCondCode(ARMCC::CondCodes CC, SMLoc S) {
2198 ARMOperand *Op = new ARMOperand(k_CondCode);
2205 static ARMOperand *CreateCoprocNum(unsigned CopVal, SMLoc S) {
2206 ARMOperand *Op = new ARMOperand(k_CoprocNum);
2207 Op->Cop.Val = CopVal;
2213 static ARMOperand *CreateCoprocReg(unsigned CopVal, SMLoc S) {
2214 ARMOperand *Op = new ARMOperand(k_CoprocReg);
2215 Op->Cop.Val = CopVal;
2221 static ARMOperand *CreateCoprocOption(unsigned Val, SMLoc S, SMLoc E) {
2222 ARMOperand *Op = new ARMOperand(k_CoprocOption);
2229 static ARMOperand *CreateCCOut(unsigned RegNum, SMLoc S) {
2230 ARMOperand *Op = new ARMOperand(k_CCOut);
2231 Op->Reg.RegNum = RegNum;
2237 static ARMOperand *CreateToken(StringRef Str, SMLoc S) {
2238 ARMOperand *Op = new ARMOperand(k_Token);
2239 Op->Tok.Data = Str.data();
2240 Op->Tok.Length = Str.size();
2246 static ARMOperand *CreateReg(unsigned RegNum, SMLoc S, SMLoc E) {
2247 ARMOperand *Op = new ARMOperand(k_Register);
2248 Op->Reg.RegNum = RegNum;
2254 static ARMOperand *CreateShiftedRegister(ARM_AM::ShiftOpc ShTy,
2259 ARMOperand *Op = new ARMOperand(k_ShiftedRegister);
2260 Op->RegShiftedReg.ShiftTy = ShTy;
2261 Op->RegShiftedReg.SrcReg = SrcReg;
2262 Op->RegShiftedReg.ShiftReg = ShiftReg;
2263 Op->RegShiftedReg.ShiftImm = ShiftImm;
2269 static ARMOperand *CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy,
2273 ARMOperand *Op = new ARMOperand(k_ShiftedImmediate);
2274 Op->RegShiftedImm.ShiftTy = ShTy;
2275 Op->RegShiftedImm.SrcReg = SrcReg;
2276 Op->RegShiftedImm.ShiftImm = ShiftImm;
2282 static ARMOperand *CreateShifterImm(bool isASR, unsigned Imm,
2284 ARMOperand *Op = new ARMOperand(k_ShifterImmediate);
2285 Op->ShifterImm.isASR = isASR;
2286 Op->ShifterImm.Imm = Imm;
2292 static ARMOperand *CreateRotImm(unsigned Imm, SMLoc S, SMLoc E) {
2293 ARMOperand *Op = new ARMOperand(k_RotateImmediate);
2294 Op->RotImm.Imm = Imm;
2300 static ARMOperand *CreateBitfield(unsigned LSB, unsigned Width,
2302 ARMOperand *Op = new ARMOperand(k_BitfieldDescriptor);
2303 Op->Bitfield.LSB = LSB;
2304 Op->Bitfield.Width = Width;
2311 CreateRegList(SmallVectorImpl<std::pair<unsigned, unsigned> > &Regs,
2312 SMLoc StartLoc, SMLoc EndLoc) {
2313 assert (Regs.size() > 0 && "RegList contains no registers?");
2314 KindTy Kind = k_RegisterList;
2316 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().second))
2317 Kind = k_DPRRegisterList;
2318 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2319 contains(Regs.front().second))
2320 Kind = k_SPRRegisterList;
2322 // Sort based on the register encoding values.
2323 array_pod_sort(Regs.begin(), Regs.end());
2325 ARMOperand *Op = new ARMOperand(Kind);
2326 for (SmallVectorImpl<std::pair<unsigned, unsigned> >::const_iterator
2327 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2328 Op->Registers.push_back(I->second);
2329 Op->StartLoc = StartLoc;
2330 Op->EndLoc = EndLoc;
2334 static ARMOperand *CreateVectorList(unsigned RegNum, unsigned Count,
2335 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2336 ARMOperand *Op = new ARMOperand(k_VectorList);
2337 Op->VectorList.RegNum = RegNum;
2338 Op->VectorList.Count = Count;
2339 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2345 static ARMOperand *CreateVectorListAllLanes(unsigned RegNum, unsigned Count,
2346 bool isDoubleSpaced,
2348 ARMOperand *Op = new ARMOperand(k_VectorListAllLanes);
2349 Op->VectorList.RegNum = RegNum;
2350 Op->VectorList.Count = Count;
2351 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2357 static ARMOperand *CreateVectorListIndexed(unsigned RegNum, unsigned Count,
2359 bool isDoubleSpaced,
2361 ARMOperand *Op = new ARMOperand(k_VectorListIndexed);
2362 Op->VectorList.RegNum = RegNum;
2363 Op->VectorList.Count = Count;
2364 Op->VectorList.LaneIndex = Index;
2365 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2371 static ARMOperand *CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E,
2373 ARMOperand *Op = new ARMOperand(k_VectorIndex);
2374 Op->VectorIndex.Val = Idx;
2380 static ARMOperand *CreateImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2381 ARMOperand *Op = new ARMOperand(k_Immediate);
2388 static ARMOperand *CreateMem(unsigned BaseRegNum,
2389 const MCConstantExpr *OffsetImm,
2390 unsigned OffsetRegNum,
2391 ARM_AM::ShiftOpc ShiftType,
2396 ARMOperand *Op = new ARMOperand(k_Memory);
2397 Op->Memory.BaseRegNum = BaseRegNum;
2398 Op->Memory.OffsetImm = OffsetImm;
2399 Op->Memory.OffsetRegNum = OffsetRegNum;
2400 Op->Memory.ShiftType = ShiftType;
2401 Op->Memory.ShiftImm = ShiftImm;
2402 Op->Memory.Alignment = Alignment;
2403 Op->Memory.isNegative = isNegative;
2409 static ARMOperand *CreatePostIdxReg(unsigned RegNum, bool isAdd,
2410 ARM_AM::ShiftOpc ShiftTy,
2413 ARMOperand *Op = new ARMOperand(k_PostIndexRegister);
2414 Op->PostIdxReg.RegNum = RegNum;
2415 Op->PostIdxReg.isAdd = isAdd;
2416 Op->PostIdxReg.ShiftTy = ShiftTy;
2417 Op->PostIdxReg.ShiftImm = ShiftImm;
2423 static ARMOperand *CreateMemBarrierOpt(ARM_MB::MemBOpt Opt, SMLoc S) {
2424 ARMOperand *Op = new ARMOperand(k_MemBarrierOpt);
2425 Op->MBOpt.Val = Opt;
2431 static ARMOperand *CreateInstSyncBarrierOpt(ARM_ISB::InstSyncBOpt Opt,
2433 ARMOperand *Op = new ARMOperand(k_InstSyncBarrierOpt);
2434 Op->ISBOpt.Val = Opt;
2440 static ARMOperand *CreateProcIFlags(ARM_PROC::IFlags IFlags, SMLoc S) {
2441 ARMOperand *Op = new ARMOperand(k_ProcIFlags);
2442 Op->IFlags.Val = IFlags;
2448 static ARMOperand *CreateMSRMask(unsigned MMask, SMLoc S) {
2449 ARMOperand *Op = new ARMOperand(k_MSRMask);
2450 Op->MMask.Val = MMask;
2457 } // end anonymous namespace.
2459 void ARMOperand::print(raw_ostream &OS) const {
2462 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2465 OS << "<ccout " << getReg() << ">";
2467 case k_ITCondMask: {
2468 static const char *const MaskStr[] = {
2469 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2470 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2472 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2473 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2477 OS << "<coprocessor number: " << getCoproc() << ">";
2480 OS << "<coprocessor register: " << getCoproc() << ">";
2482 case k_CoprocOption:
2483 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2486 OS << "<mask: " << getMSRMask() << ">";
2489 getImm()->print(OS);
2491 case k_MemBarrierOpt:
2492 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt()) << ">";
2494 case k_InstSyncBarrierOpt:
2495 OS << "<ARM_ISB::" << InstSyncBOptToString(getInstSyncBarrierOpt()) << ">";
2499 << " base:" << Memory.BaseRegNum;
2502 case k_PostIndexRegister:
2503 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2504 << PostIdxReg.RegNum;
2505 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2506 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2507 << PostIdxReg.ShiftImm;
2510 case k_ProcIFlags: {
2511 OS << "<ARM_PROC::";
2512 unsigned IFlags = getProcIFlags();
2513 for (int i=2; i >= 0; --i)
2514 if (IFlags & (1 << i))
2515 OS << ARM_PROC::IFlagsToString(1 << i);
2520 OS << "<register " << getReg() << ">";
2522 case k_ShifterImmediate:
2523 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2524 << " #" << ShifterImm.Imm << ">";
2526 case k_ShiftedRegister:
2527 OS << "<so_reg_reg "
2528 << RegShiftedReg.SrcReg << " "
2529 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2530 << " " << RegShiftedReg.ShiftReg << ">";
2532 case k_ShiftedImmediate:
2533 OS << "<so_reg_imm "
2534 << RegShiftedImm.SrcReg << " "
2535 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2536 << " #" << RegShiftedImm.ShiftImm << ">";
2538 case k_RotateImmediate:
2539 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2541 case k_BitfieldDescriptor:
2542 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2543 << ", width: " << Bitfield.Width << ">";
2545 case k_RegisterList:
2546 case k_DPRRegisterList:
2547 case k_SPRRegisterList: {
2548 OS << "<register_list ";
2550 const SmallVectorImpl<unsigned> &RegList = getRegList();
2551 for (SmallVectorImpl<unsigned>::const_iterator
2552 I = RegList.begin(), E = RegList.end(); I != E; ) {
2554 if (++I < E) OS << ", ";
2561 OS << "<vector_list " << VectorList.Count << " * "
2562 << VectorList.RegNum << ">";
2564 case k_VectorListAllLanes:
2565 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2566 << VectorList.RegNum << ">";
2568 case k_VectorListIndexed:
2569 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2570 << VectorList.Count << " * " << VectorList.RegNum << ">";
2573 OS << "'" << getToken() << "'";
2576 OS << "<vectorindex " << getVectorIndex() << ">";
2581 /// @name Auto-generated Match Functions
2584 static unsigned MatchRegisterName(StringRef Name);
2588 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2589 SMLoc &StartLoc, SMLoc &EndLoc) {
2590 StartLoc = Parser.getTok().getLoc();
2591 EndLoc = Parser.getTok().getEndLoc();
2592 RegNo = tryParseRegister();
2594 return (RegNo == (unsigned)-1);
2597 /// Try to parse a register name. The token must be an Identifier when called,
2598 /// and if it is a register name the token is eaten and the register number is
2599 /// returned. Otherwise return -1.
2601 int ARMAsmParser::tryParseRegister() {
2602 const AsmToken &Tok = Parser.getTok();
2603 if (Tok.isNot(AsmToken::Identifier)) return -1;
2605 std::string lowerCase = Tok.getString().lower();
2606 unsigned RegNum = MatchRegisterName(lowerCase);
2608 RegNum = StringSwitch<unsigned>(lowerCase)
2609 .Case("r13", ARM::SP)
2610 .Case("r14", ARM::LR)
2611 .Case("r15", ARM::PC)
2612 .Case("ip", ARM::R12)
2613 // Additional register name aliases for 'gas' compatibility.
2614 .Case("a1", ARM::R0)
2615 .Case("a2", ARM::R1)
2616 .Case("a3", ARM::R2)
2617 .Case("a4", ARM::R3)
2618 .Case("v1", ARM::R4)
2619 .Case("v2", ARM::R5)
2620 .Case("v3", ARM::R6)
2621 .Case("v4", ARM::R7)
2622 .Case("v5", ARM::R8)
2623 .Case("v6", ARM::R9)
2624 .Case("v7", ARM::R10)
2625 .Case("v8", ARM::R11)
2626 .Case("sb", ARM::R9)
2627 .Case("sl", ARM::R10)
2628 .Case("fp", ARM::R11)
2632 // Check for aliases registered via .req. Canonicalize to lower case.
2633 // That's more consistent since register names are case insensitive, and
2634 // it's how the original entry was passed in from MC/MCParser/AsmParser.
2635 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
2636 // If no match, return failure.
2637 if (Entry == RegisterReqs.end())
2639 Parser.Lex(); // Eat identifier token.
2640 return Entry->getValue();
2643 Parser.Lex(); // Eat identifier token.
2648 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2649 // If a recoverable error occurs, return 1. If an irrecoverable error
2650 // occurs, return -1. An irrecoverable error is one where tokens have been
2651 // consumed in the process of trying to parse the shifter (i.e., when it is
2652 // indeed a shifter operand, but malformed).
2653 int ARMAsmParser::tryParseShiftRegister(
2654 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2655 SMLoc S = Parser.getTok().getLoc();
2656 const AsmToken &Tok = Parser.getTok();
2657 assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
2659 std::string lowerCase = Tok.getString().lower();
2660 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2661 .Case("asl", ARM_AM::lsl)
2662 .Case("lsl", ARM_AM::lsl)
2663 .Case("lsr", ARM_AM::lsr)
2664 .Case("asr", ARM_AM::asr)
2665 .Case("ror", ARM_AM::ror)
2666 .Case("rrx", ARM_AM::rrx)
2667 .Default(ARM_AM::no_shift);
2669 if (ShiftTy == ARM_AM::no_shift)
2672 Parser.Lex(); // Eat the operator.
2674 // The source register for the shift has already been added to the
2675 // operand list, so we need to pop it off and combine it into the shifted
2676 // register operand instead.
2677 OwningPtr<ARMOperand> PrevOp((ARMOperand*)Operands.pop_back_val());
2678 if (!PrevOp->isReg())
2679 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2680 int SrcReg = PrevOp->getReg();
2685 if (ShiftTy == ARM_AM::rrx) {
2686 // RRX Doesn't have an explicit shift amount. The encoder expects
2687 // the shift register to be the same as the source register. Seems odd,
2691 // Figure out if this is shifted by a constant or a register (for non-RRX).
2692 if (Parser.getTok().is(AsmToken::Hash) ||
2693 Parser.getTok().is(AsmToken::Dollar)) {
2694 Parser.Lex(); // Eat hash.
2695 SMLoc ImmLoc = Parser.getTok().getLoc();
2696 const MCExpr *ShiftExpr = 0;
2697 if (getParser().parseExpression(ShiftExpr, EndLoc)) {
2698 Error(ImmLoc, "invalid immediate shift value");
2701 // The expression must be evaluatable as an immediate.
2702 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2704 Error(ImmLoc, "invalid immediate shift value");
2707 // Range check the immediate.
2708 // lsl, ror: 0 <= imm <= 31
2709 // lsr, asr: 0 <= imm <= 32
2710 Imm = CE->getValue();
2712 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2713 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2714 Error(ImmLoc, "immediate shift value out of range");
2717 // shift by zero is a nop. Always send it through as lsl.
2718 // ('as' compatibility)
2720 ShiftTy = ARM_AM::lsl;
2721 } else if (Parser.getTok().is(AsmToken::Identifier)) {
2722 SMLoc L = Parser.getTok().getLoc();
2723 EndLoc = Parser.getTok().getEndLoc();
2724 ShiftReg = tryParseRegister();
2725 if (ShiftReg == -1) {
2726 Error (L, "expected immediate or register in shift operand");
2730 Error (Parser.getTok().getLoc(),
2731 "expected immediate or register in shift operand");
2736 if (ShiftReg && ShiftTy != ARM_AM::rrx)
2737 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
2741 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
2748 /// Try to parse a register name. The token must be an Identifier when called.
2749 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
2750 /// if there is a "writeback". 'true' if it's not a register.
2752 /// TODO this is likely to change to allow different register types and or to
2753 /// parse for a specific register type.
2755 tryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2756 const AsmToken &RegTok = Parser.getTok();
2757 int RegNo = tryParseRegister();
2761 Operands.push_back(ARMOperand::CreateReg(RegNo, RegTok.getLoc(),
2762 RegTok.getEndLoc()));
2764 const AsmToken &ExclaimTok = Parser.getTok();
2765 if (ExclaimTok.is(AsmToken::Exclaim)) {
2766 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
2767 ExclaimTok.getLoc()));
2768 Parser.Lex(); // Eat exclaim token
2772 // Also check for an index operand. This is only legal for vector registers,
2773 // but that'll get caught OK in operand matching, so we don't need to
2774 // explicitly filter everything else out here.
2775 if (Parser.getTok().is(AsmToken::LBrac)) {
2776 SMLoc SIdx = Parser.getTok().getLoc();
2777 Parser.Lex(); // Eat left bracket token.
2779 const MCExpr *ImmVal;
2780 if (getParser().parseExpression(ImmVal))
2782 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
2784 return TokError("immediate value expected for vector index");
2786 if (Parser.getTok().isNot(AsmToken::RBrac))
2787 return Error(Parser.getTok().getLoc(), "']' expected");
2789 SMLoc E = Parser.getTok().getEndLoc();
2790 Parser.Lex(); // Eat right bracket token.
2792 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
2800 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
2801 /// instruction with a symbolic operand name. Example: "p1", "p7", "c3",
2803 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
2804 // Use the same layout as the tablegen'erated register name matcher. Ugly,
2806 switch (Name.size()) {
2809 if (Name[0] != CoprocOp)
2825 if (Name[0] != CoprocOp || Name[1] != '1')
2829 case '0': return 10;
2830 case '1': return 11;
2831 case '2': return 12;
2832 case '3': return 13;
2833 case '4': return 14;
2834 case '5': return 15;
2839 /// parseITCondCode - Try to parse a condition code for an IT instruction.
2840 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2841 parseITCondCode(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2842 SMLoc S = Parser.getTok().getLoc();
2843 const AsmToken &Tok = Parser.getTok();
2844 if (!Tok.is(AsmToken::Identifier))
2845 return MatchOperand_NoMatch;
2846 unsigned CC = StringSwitch<unsigned>(Tok.getString().lower())
2847 .Case("eq", ARMCC::EQ)
2848 .Case("ne", ARMCC::NE)
2849 .Case("hs", ARMCC::HS)
2850 .Case("cs", ARMCC::HS)
2851 .Case("lo", ARMCC::LO)
2852 .Case("cc", ARMCC::LO)
2853 .Case("mi", ARMCC::MI)
2854 .Case("pl", ARMCC::PL)
2855 .Case("vs", ARMCC::VS)
2856 .Case("vc", ARMCC::VC)
2857 .Case("hi", ARMCC::HI)
2858 .Case("ls", ARMCC::LS)
2859 .Case("ge", ARMCC::GE)
2860 .Case("lt", ARMCC::LT)
2861 .Case("gt", ARMCC::GT)
2862 .Case("le", ARMCC::LE)
2863 .Case("al", ARMCC::AL)
2866 return MatchOperand_NoMatch;
2867 Parser.Lex(); // Eat the token.
2869 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
2871 return MatchOperand_Success;
2874 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
2875 /// token must be an Identifier when called, and if it is a coprocessor
2876 /// number, the token is eaten and the operand is added to the operand list.
2877 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2878 parseCoprocNumOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2879 SMLoc S = Parser.getTok().getLoc();
2880 const AsmToken &Tok = Parser.getTok();
2881 if (Tok.isNot(AsmToken::Identifier))
2882 return MatchOperand_NoMatch;
2884 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
2886 return MatchOperand_NoMatch;
2888 Parser.Lex(); // Eat identifier token.
2889 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
2890 return MatchOperand_Success;
2893 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
2894 /// token must be an Identifier when called, and if it is a coprocessor
2895 /// number, the token is eaten and the operand is added to the operand list.
2896 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2897 parseCoprocRegOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2898 SMLoc S = Parser.getTok().getLoc();
2899 const AsmToken &Tok = Parser.getTok();
2900 if (Tok.isNot(AsmToken::Identifier))
2901 return MatchOperand_NoMatch;
2903 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
2905 return MatchOperand_NoMatch;
2907 Parser.Lex(); // Eat identifier token.
2908 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
2909 return MatchOperand_Success;
2912 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
2913 /// coproc_option : '{' imm0_255 '}'
2914 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
2915 parseCoprocOptionOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2916 SMLoc S = Parser.getTok().getLoc();
2918 // If this isn't a '{', this isn't a coprocessor immediate operand.
2919 if (Parser.getTok().isNot(AsmToken::LCurly))
2920 return MatchOperand_NoMatch;
2921 Parser.Lex(); // Eat the '{'
2924 SMLoc Loc = Parser.getTok().getLoc();
2925 if (getParser().parseExpression(Expr)) {
2926 Error(Loc, "illegal expression");
2927 return MatchOperand_ParseFail;
2929 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
2930 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
2931 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
2932 return MatchOperand_ParseFail;
2934 int Val = CE->getValue();
2936 // Check for and consume the closing '}'
2937 if (Parser.getTok().isNot(AsmToken::RCurly))
2938 return MatchOperand_ParseFail;
2939 SMLoc E = Parser.getTok().getEndLoc();
2940 Parser.Lex(); // Eat the '}'
2942 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
2943 return MatchOperand_Success;
2946 // For register list parsing, we need to map from raw GPR register numbering
2947 // to the enumeration values. The enumeration values aren't sorted by
2948 // register number due to our using "sp", "lr" and "pc" as canonical names.
2949 static unsigned getNextRegister(unsigned Reg) {
2950 // If this is a GPR, we need to do it manually, otherwise we can rely
2951 // on the sort ordering of the enumeration since the other reg-classes
2953 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
2956 default: llvm_unreachable("Invalid GPR number!");
2957 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
2958 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
2959 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
2960 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
2961 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
2962 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
2963 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
2964 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
2968 // Return the low-subreg of a given Q register.
2969 static unsigned getDRegFromQReg(unsigned QReg) {
2971 default: llvm_unreachable("expected a Q register!");
2972 case ARM::Q0: return ARM::D0;
2973 case ARM::Q1: return ARM::D2;
2974 case ARM::Q2: return ARM::D4;
2975 case ARM::Q3: return ARM::D6;
2976 case ARM::Q4: return ARM::D8;
2977 case ARM::Q5: return ARM::D10;
2978 case ARM::Q6: return ARM::D12;
2979 case ARM::Q7: return ARM::D14;
2980 case ARM::Q8: return ARM::D16;
2981 case ARM::Q9: return ARM::D18;
2982 case ARM::Q10: return ARM::D20;
2983 case ARM::Q11: return ARM::D22;
2984 case ARM::Q12: return ARM::D24;
2985 case ARM::Q13: return ARM::D26;
2986 case ARM::Q14: return ARM::D28;
2987 case ARM::Q15: return ARM::D30;
2991 /// Parse a register list.
2993 parseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
2994 assert(Parser.getTok().is(AsmToken::LCurly) &&
2995 "Token is not a Left Curly Brace");
2996 SMLoc S = Parser.getTok().getLoc();
2997 Parser.Lex(); // Eat '{' token.
2998 SMLoc RegLoc = Parser.getTok().getLoc();
3000 // Check the first register in the list to see what register class
3001 // this is a list of.
3002 int Reg = tryParseRegister();
3004 return Error(RegLoc, "register expected");
3006 // The reglist instructions have at most 16 registers, so reserve
3007 // space for that many.
3009 SmallVector<std::pair<unsigned, unsigned>, 16> Registers;
3011 // Allow Q regs and just interpret them as the two D sub-registers.
3012 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3013 Reg = getDRegFromQReg(Reg);
3014 EReg = MRI->getEncodingValue(Reg);
3015 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3018 const MCRegisterClass *RC;
3019 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3020 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
3021 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
3022 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
3023 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
3024 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
3026 return Error(RegLoc, "invalid register in register list");
3028 // Store the register.
3029 EReg = MRI->getEncodingValue(Reg);
3030 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3032 // This starts immediately after the first register token in the list,
3033 // so we can see either a comma or a minus (range separator) as a legal
3035 while (Parser.getTok().is(AsmToken::Comma) ||
3036 Parser.getTok().is(AsmToken::Minus)) {
3037 if (Parser.getTok().is(AsmToken::Minus)) {
3038 Parser.Lex(); // Eat the minus.
3039 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3040 int EndReg = tryParseRegister();
3042 return Error(AfterMinusLoc, "register expected");
3043 // Allow Q regs and just interpret them as the two D sub-registers.
3044 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3045 EndReg = getDRegFromQReg(EndReg) + 1;
3046 // If the register is the same as the start reg, there's nothing
3050 // The register must be in the same register class as the first.
3051 if (!RC->contains(EndReg))
3052 return Error(AfterMinusLoc, "invalid register in register list");
3053 // Ranges must go from low to high.
3054 if (MRI->getEncodingValue(Reg) > MRI->getEncodingValue(EndReg))
3055 return Error(AfterMinusLoc, "bad range in register list");
3057 // Add all the registers in the range to the register list.
3058 while (Reg != EndReg) {
3059 Reg = getNextRegister(Reg);
3060 EReg = MRI->getEncodingValue(Reg);
3061 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3065 Parser.Lex(); // Eat the comma.
3066 RegLoc = Parser.getTok().getLoc();
3068 const AsmToken RegTok = Parser.getTok();
3069 Reg = tryParseRegister();
3071 return Error(RegLoc, "register expected");
3072 // Allow Q regs and just interpret them as the two D sub-registers.
3073 bool isQReg = false;
3074 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3075 Reg = getDRegFromQReg(Reg);
3078 // The register must be in the same register class as the first.
3079 if (!RC->contains(Reg))
3080 return Error(RegLoc, "invalid register in register list");
3081 // List must be monotonically increasing.
3082 if (MRI->getEncodingValue(Reg) < MRI->getEncodingValue(OldReg)) {
3083 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3084 Warning(RegLoc, "register list not in ascending order");
3086 return Error(RegLoc, "register list not in ascending order");
3088 if (MRI->getEncodingValue(Reg) == MRI->getEncodingValue(OldReg)) {
3089 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
3090 ") in register list");
3093 // VFP register lists must also be contiguous.
3094 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
3096 return Error(RegLoc, "non-contiguous register range");
3097 EReg = MRI->getEncodingValue(Reg);
3098 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3100 EReg = MRI->getEncodingValue(++Reg);
3101 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3105 if (Parser.getTok().isNot(AsmToken::RCurly))
3106 return Error(Parser.getTok().getLoc(), "'}' expected");
3107 SMLoc E = Parser.getTok().getEndLoc();
3108 Parser.Lex(); // Eat '}' token.
3110 // Push the register list operand.
3111 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
3113 // The ARM system instruction variants for LDM/STM have a '^' token here.
3114 if (Parser.getTok().is(AsmToken::Caret)) {
3115 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
3116 Parser.Lex(); // Eat '^' token.
3122 // Helper function to parse the lane index for vector lists.
3123 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3124 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, SMLoc &EndLoc) {
3125 Index = 0; // Always return a defined index value.
3126 if (Parser.getTok().is(AsmToken::LBrac)) {
3127 Parser.Lex(); // Eat the '['.
3128 if (Parser.getTok().is(AsmToken::RBrac)) {
3129 // "Dn[]" is the 'all lanes' syntax.
3130 LaneKind = AllLanes;
3131 EndLoc = Parser.getTok().getEndLoc();
3132 Parser.Lex(); // Eat the ']'.
3133 return MatchOperand_Success;
3136 // There's an optional '#' token here. Normally there wouldn't be, but
3137 // inline assemble puts one in, and it's friendly to accept that.
3138 if (Parser.getTok().is(AsmToken::Hash))
3139 Parser.Lex(); // Eat '#' or '$'.
3141 const MCExpr *LaneIndex;
3142 SMLoc Loc = Parser.getTok().getLoc();
3143 if (getParser().parseExpression(LaneIndex)) {
3144 Error(Loc, "illegal expression");
3145 return MatchOperand_ParseFail;
3147 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
3149 Error(Loc, "lane index must be empty or an integer");
3150 return MatchOperand_ParseFail;
3152 if (Parser.getTok().isNot(AsmToken::RBrac)) {
3153 Error(Parser.getTok().getLoc(), "']' expected");
3154 return MatchOperand_ParseFail;
3156 EndLoc = Parser.getTok().getEndLoc();
3157 Parser.Lex(); // Eat the ']'.
3158 int64_t Val = CE->getValue();
3160 // FIXME: Make this range check context sensitive for .8, .16, .32.
3161 if (Val < 0 || Val > 7) {
3162 Error(Parser.getTok().getLoc(), "lane index out of range");
3163 return MatchOperand_ParseFail;
3166 LaneKind = IndexedLane;
3167 return MatchOperand_Success;
3170 return MatchOperand_Success;
3173 // parse a vector register list
3174 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3175 parseVectorList(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3176 VectorLaneTy LaneKind;
3178 SMLoc S = Parser.getTok().getLoc();
3179 // As an extension (to match gas), support a plain D register or Q register
3180 // (without encosing curly braces) as a single or double entry list,
3182 if (Parser.getTok().is(AsmToken::Identifier)) {
3183 SMLoc E = Parser.getTok().getEndLoc();
3184 int Reg = tryParseRegister();
3186 return MatchOperand_NoMatch;
3187 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
3188 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3189 if (Res != MatchOperand_Success)
3193 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
3196 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
3200 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
3205 return MatchOperand_Success;
3207 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3208 Reg = getDRegFromQReg(Reg);
3209 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3210 if (Res != MatchOperand_Success)
3214 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3215 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3216 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
3219 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3220 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3221 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
3225 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
3230 return MatchOperand_Success;
3232 Error(S, "vector register expected");
3233 return MatchOperand_ParseFail;
3236 if (Parser.getTok().isNot(AsmToken::LCurly))
3237 return MatchOperand_NoMatch;
3239 Parser.Lex(); // Eat '{' token.
3240 SMLoc RegLoc = Parser.getTok().getLoc();
3242 int Reg = tryParseRegister();
3244 Error(RegLoc, "register expected");
3245 return MatchOperand_ParseFail;
3249 unsigned FirstReg = Reg;
3250 // The list is of D registers, but we also allow Q regs and just interpret
3251 // them as the two D sub-registers.
3252 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3253 FirstReg = Reg = getDRegFromQReg(Reg);
3254 Spacing = 1; // double-spacing requires explicit D registers, otherwise
3255 // it's ambiguous with four-register single spaced.
3261 if (parseVectorLane(LaneKind, LaneIndex, E) != MatchOperand_Success)
3262 return MatchOperand_ParseFail;
3264 while (Parser.getTok().is(AsmToken::Comma) ||
3265 Parser.getTok().is(AsmToken::Minus)) {
3266 if (Parser.getTok().is(AsmToken::Minus)) {
3268 Spacing = 1; // Register range implies a single spaced list.
3269 else if (Spacing == 2) {
3270 Error(Parser.getTok().getLoc(),
3271 "sequential registers in double spaced list");
3272 return MatchOperand_ParseFail;
3274 Parser.Lex(); // Eat the minus.
3275 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3276 int EndReg = tryParseRegister();
3278 Error(AfterMinusLoc, "register expected");
3279 return MatchOperand_ParseFail;
3281 // Allow Q regs and just interpret them as the two D sub-registers.
3282 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3283 EndReg = getDRegFromQReg(EndReg) + 1;
3284 // If the register is the same as the start reg, there's nothing
3288 // The register must be in the same register class as the first.
3289 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
3290 Error(AfterMinusLoc, "invalid register in register list");
3291 return MatchOperand_ParseFail;
3293 // Ranges must go from low to high.
3295 Error(AfterMinusLoc, "bad range in register list");
3296 return MatchOperand_ParseFail;
3298 // Parse the lane specifier if present.
3299 VectorLaneTy NextLaneKind;
3300 unsigned NextLaneIndex;
3301 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3302 MatchOperand_Success)
3303 return MatchOperand_ParseFail;
3304 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3305 Error(AfterMinusLoc, "mismatched lane index in register list");
3306 return MatchOperand_ParseFail;
3309 // Add all the registers in the range to the register list.
3310 Count += EndReg - Reg;
3314 Parser.Lex(); // Eat the comma.
3315 RegLoc = Parser.getTok().getLoc();
3317 Reg = tryParseRegister();
3319 Error(RegLoc, "register expected");
3320 return MatchOperand_ParseFail;
3322 // vector register lists must be contiguous.
3323 // It's OK to use the enumeration values directly here rather, as the
3324 // VFP register classes have the enum sorted properly.
3326 // The list is of D registers, but we also allow Q regs and just interpret
3327 // them as the two D sub-registers.
3328 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3330 Spacing = 1; // Register range implies a single spaced list.
3331 else if (Spacing == 2) {
3333 "invalid register in double-spaced list (must be 'D' register')");
3334 return MatchOperand_ParseFail;
3336 Reg = getDRegFromQReg(Reg);
3337 if (Reg != OldReg + 1) {
3338 Error(RegLoc, "non-contiguous register range");
3339 return MatchOperand_ParseFail;
3343 // Parse the lane specifier if present.
3344 VectorLaneTy NextLaneKind;
3345 unsigned NextLaneIndex;
3346 SMLoc LaneLoc = Parser.getTok().getLoc();
3347 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3348 MatchOperand_Success)
3349 return MatchOperand_ParseFail;
3350 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3351 Error(LaneLoc, "mismatched lane index in register list");
3352 return MatchOperand_ParseFail;
3356 // Normal D register.
3357 // Figure out the register spacing (single or double) of the list if
3358 // we don't know it already.
3360 Spacing = 1 + (Reg == OldReg + 2);
3362 // Just check that it's contiguous and keep going.
3363 if (Reg != OldReg + Spacing) {
3364 Error(RegLoc, "non-contiguous register range");
3365 return MatchOperand_ParseFail;
3368 // Parse the lane specifier if present.
3369 VectorLaneTy NextLaneKind;
3370 unsigned NextLaneIndex;
3371 SMLoc EndLoc = Parser.getTok().getLoc();
3372 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != MatchOperand_Success)
3373 return MatchOperand_ParseFail;
3374 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3375 Error(EndLoc, "mismatched lane index in register list");
3376 return MatchOperand_ParseFail;
3380 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3381 Error(Parser.getTok().getLoc(), "'}' expected");
3382 return MatchOperand_ParseFail;
3384 E = Parser.getTok().getEndLoc();
3385 Parser.Lex(); // Eat '}' token.
3389 // Two-register operands have been converted to the
3390 // composite register classes.
3392 const MCRegisterClass *RC = (Spacing == 1) ?
3393 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
3394 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
3395 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
3398 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
3399 (Spacing == 2), S, E));
3402 // Two-register operands have been converted to the
3403 // composite register classes.
3405 const MCRegisterClass *RC = (Spacing == 1) ?
3406 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
3407 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
3408 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
3410 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
3415 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
3421 return MatchOperand_Success;
3424 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
3425 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3426 parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3427 SMLoc S = Parser.getTok().getLoc();
3428 const AsmToken &Tok = Parser.getTok();
3431 if (Tok.is(AsmToken::Identifier)) {
3432 StringRef OptStr = Tok.getString();
3434 Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
3435 .Case("sy", ARM_MB::SY)
3436 .Case("st", ARM_MB::ST)
3437 .Case("sh", ARM_MB::ISH)
3438 .Case("ish", ARM_MB::ISH)
3439 .Case("shst", ARM_MB::ISHST)
3440 .Case("ishst", ARM_MB::ISHST)
3441 .Case("nsh", ARM_MB::NSH)
3442 .Case("un", ARM_MB::NSH)
3443 .Case("nshst", ARM_MB::NSHST)
3444 .Case("unst", ARM_MB::NSHST)
3445 .Case("osh", ARM_MB::OSH)
3446 .Case("oshst", ARM_MB::OSHST)
3450 return MatchOperand_NoMatch;
3452 Parser.Lex(); // Eat identifier token.
3453 } else if (Tok.is(AsmToken::Hash) ||
3454 Tok.is(AsmToken::Dollar) ||
3455 Tok.is(AsmToken::Integer)) {
3456 if (Parser.getTok().isNot(AsmToken::Integer))
3457 Parser.Lex(); // Eat '#' or '$'.
3458 SMLoc Loc = Parser.getTok().getLoc();
3460 const MCExpr *MemBarrierID;
3461 if (getParser().parseExpression(MemBarrierID)) {
3462 Error(Loc, "illegal expression");
3463 return MatchOperand_ParseFail;
3466 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID);
3468 Error(Loc, "constant expression expected");
3469 return MatchOperand_ParseFail;
3472 int Val = CE->getValue();
3474 Error(Loc, "immediate value out of range");
3475 return MatchOperand_ParseFail;
3478 Opt = ARM_MB::RESERVED_0 + Val;
3480 return MatchOperand_ParseFail;
3482 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
3483 return MatchOperand_Success;
3486 /// parseInstSyncBarrierOptOperand - Try to parse ISB inst sync barrier options.
3487 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3488 parseInstSyncBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3489 SMLoc S = Parser.getTok().getLoc();
3490 const AsmToken &Tok = Parser.getTok();
3493 if (Tok.is(AsmToken::Identifier)) {
3494 StringRef OptStr = Tok.getString();
3496 if (OptStr.lower() == "sy")
3499 return MatchOperand_NoMatch;
3501 Parser.Lex(); // Eat identifier token.
3502 } else if (Tok.is(AsmToken::Hash) ||
3503 Tok.is(AsmToken::Dollar) ||
3504 Tok.is(AsmToken::Integer)) {
3505 if (Parser.getTok().isNot(AsmToken::Integer))
3506 Parser.Lex(); // Eat '#' or '$'.
3507 SMLoc Loc = Parser.getTok().getLoc();
3509 const MCExpr *ISBarrierID;
3510 if (getParser().parseExpression(ISBarrierID)) {
3511 Error(Loc, "illegal expression");
3512 return MatchOperand_ParseFail;
3515 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ISBarrierID);
3517 Error(Loc, "constant expression expected");
3518 return MatchOperand_ParseFail;
3521 int Val = CE->getValue();
3523 Error(Loc, "immediate value out of range");
3524 return MatchOperand_ParseFail;
3527 Opt = ARM_ISB::RESERVED_0 + Val;
3529 return MatchOperand_ParseFail;
3531 Operands.push_back(ARMOperand::CreateInstSyncBarrierOpt(
3532 (ARM_ISB::InstSyncBOpt)Opt, S));
3533 return MatchOperand_Success;
3537 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
3538 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3539 parseProcIFlagsOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3540 SMLoc S = Parser.getTok().getLoc();
3541 const AsmToken &Tok = Parser.getTok();
3542 if (!Tok.is(AsmToken::Identifier))
3543 return MatchOperand_NoMatch;
3544 StringRef IFlagsStr = Tok.getString();
3546 // An iflags string of "none" is interpreted to mean that none of the AIF
3547 // bits are set. Not a terribly useful instruction, but a valid encoding.
3548 unsigned IFlags = 0;
3549 if (IFlagsStr != "none") {
3550 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
3551 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
3552 .Case("a", ARM_PROC::A)
3553 .Case("i", ARM_PROC::I)
3554 .Case("f", ARM_PROC::F)
3557 // If some specific iflag is already set, it means that some letter is
3558 // present more than once, this is not acceptable.
3559 if (Flag == ~0U || (IFlags & Flag))
3560 return MatchOperand_NoMatch;
3566 Parser.Lex(); // Eat identifier token.
3567 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
3568 return MatchOperand_Success;
3571 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
3572 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3573 parseMSRMaskOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3574 SMLoc S = Parser.getTok().getLoc();
3575 const AsmToken &Tok = Parser.getTok();
3576 if (!Tok.is(AsmToken::Identifier))
3577 return MatchOperand_NoMatch;
3578 StringRef Mask = Tok.getString();
3581 // See ARMv6-M 10.1.1
3582 std::string Name = Mask.lower();
3583 unsigned FlagsVal = StringSwitch<unsigned>(Name)
3584 // Note: in the documentation:
3585 // ARM deprecates using MSR APSR without a _<bits> qualifier as an alias
3586 // for MSR APSR_nzcvq.
3587 // but we do make it an alias here. This is so to get the "mask encoding"
3588 // bits correct on MSR APSR writes.
3590 // FIXME: Note the 0xc00 "mask encoding" bits version of the registers
3591 // should really only be allowed when writing a special register. Note
3592 // they get dropped in the MRS instruction reading a special register as
3593 // the SYSm field is only 8 bits.
3595 // FIXME: the _g and _nzcvqg versions are only allowed if the processor
3596 // includes the DSP extension but that is not checked.
3597 .Case("apsr", 0x800)
3598 .Case("apsr_nzcvq", 0x800)
3599 .Case("apsr_g", 0x400)
3600 .Case("apsr_nzcvqg", 0xc00)
3601 .Case("iapsr", 0x801)
3602 .Case("iapsr_nzcvq", 0x801)
3603 .Case("iapsr_g", 0x401)
3604 .Case("iapsr_nzcvqg", 0xc01)
3605 .Case("eapsr", 0x802)
3606 .Case("eapsr_nzcvq", 0x802)
3607 .Case("eapsr_g", 0x402)
3608 .Case("eapsr_nzcvqg", 0xc02)
3609 .Case("xpsr", 0x803)
3610 .Case("xpsr_nzcvq", 0x803)
3611 .Case("xpsr_g", 0x403)
3612 .Case("xpsr_nzcvqg", 0xc03)
3613 .Case("ipsr", 0x805)
3614 .Case("epsr", 0x806)
3615 .Case("iepsr", 0x807)
3618 .Case("primask", 0x810)
3619 .Case("basepri", 0x811)
3620 .Case("basepri_max", 0x812)
3621 .Case("faultmask", 0x813)
3622 .Case("control", 0x814)
3625 if (FlagsVal == ~0U)
3626 return MatchOperand_NoMatch;
3628 if (!hasV7Ops() && FlagsVal >= 0x811 && FlagsVal <= 0x813)
3629 // basepri, basepri_max and faultmask only valid for V7m.
3630 return MatchOperand_NoMatch;
3632 Parser.Lex(); // Eat identifier token.
3633 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3634 return MatchOperand_Success;
3637 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
3638 size_t Start = 0, Next = Mask.find('_');
3639 StringRef Flags = "";
3640 std::string SpecReg = Mask.slice(Start, Next).lower();
3641 if (Next != StringRef::npos)
3642 Flags = Mask.slice(Next+1, Mask.size());
3644 // FlagsVal contains the complete mask:
3646 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3647 unsigned FlagsVal = 0;
3649 if (SpecReg == "apsr") {
3650 FlagsVal = StringSwitch<unsigned>(Flags)
3651 .Case("nzcvq", 0x8) // same as CPSR_f
3652 .Case("g", 0x4) // same as CPSR_s
3653 .Case("nzcvqg", 0xc) // same as CPSR_fs
3656 if (FlagsVal == ~0U) {
3658 return MatchOperand_NoMatch;
3660 FlagsVal = 8; // No flag
3662 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
3663 // cpsr_all is an alias for cpsr_fc, as is plain cpsr.
3664 if (Flags == "all" || Flags == "")
3666 for (int i = 0, e = Flags.size(); i != e; ++i) {
3667 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
3674 // If some specific flag is already set, it means that some letter is
3675 // present more than once, this is not acceptable.
3676 if (FlagsVal == ~0U || (FlagsVal & Flag))
3677 return MatchOperand_NoMatch;
3680 } else // No match for special register.
3681 return MatchOperand_NoMatch;
3683 // Special register without flags is NOT equivalent to "fc" flags.
3684 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
3685 // two lines would enable gas compatibility at the expense of breaking
3691 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3692 if (SpecReg == "spsr")
3695 Parser.Lex(); // Eat identifier token.
3696 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3697 return MatchOperand_Success;
3700 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3701 parsePKHImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands, StringRef Op,
3702 int Low, int High) {
3703 const AsmToken &Tok = Parser.getTok();
3704 if (Tok.isNot(AsmToken::Identifier)) {
3705 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3706 return MatchOperand_ParseFail;
3708 StringRef ShiftName = Tok.getString();
3709 std::string LowerOp = Op.lower();
3710 std::string UpperOp = Op.upper();
3711 if (ShiftName != LowerOp && ShiftName != UpperOp) {
3712 Error(Parser.getTok().getLoc(), Op + " operand expected.");
3713 return MatchOperand_ParseFail;
3715 Parser.Lex(); // Eat shift type token.
3717 // There must be a '#' and a shift amount.
3718 if (Parser.getTok().isNot(AsmToken::Hash) &&
3719 Parser.getTok().isNot(AsmToken::Dollar)) {
3720 Error(Parser.getTok().getLoc(), "'#' expected");
3721 return MatchOperand_ParseFail;
3723 Parser.Lex(); // Eat hash token.
3725 const MCExpr *ShiftAmount;
3726 SMLoc Loc = Parser.getTok().getLoc();
3728 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
3729 Error(Loc, "illegal expression");
3730 return MatchOperand_ParseFail;
3732 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3734 Error(Loc, "constant expression expected");
3735 return MatchOperand_ParseFail;
3737 int Val = CE->getValue();
3738 if (Val < Low || Val > High) {
3739 Error(Loc, "immediate value out of range");
3740 return MatchOperand_ParseFail;
3743 Operands.push_back(ARMOperand::CreateImm(CE, Loc, EndLoc));
3745 return MatchOperand_Success;
3748 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3749 parseSetEndImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3750 const AsmToken &Tok = Parser.getTok();
3751 SMLoc S = Tok.getLoc();
3752 if (Tok.isNot(AsmToken::Identifier)) {
3753 Error(S, "'be' or 'le' operand expected");
3754 return MatchOperand_ParseFail;
3756 int Val = StringSwitch<int>(Tok.getString().lower())
3760 Parser.Lex(); // Eat the token.
3763 Error(S, "'be' or 'le' operand expected");
3764 return MatchOperand_ParseFail;
3766 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
3768 S, Tok.getEndLoc()));
3769 return MatchOperand_Success;
3772 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
3773 /// instructions. Legal values are:
3774 /// lsl #n 'n' in [0,31]
3775 /// asr #n 'n' in [1,32]
3776 /// n == 32 encoded as n == 0.
3777 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3778 parseShifterImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3779 const AsmToken &Tok = Parser.getTok();
3780 SMLoc S = Tok.getLoc();
3781 if (Tok.isNot(AsmToken::Identifier)) {
3782 Error(S, "shift operator 'asr' or 'lsl' expected");
3783 return MatchOperand_ParseFail;
3785 StringRef ShiftName = Tok.getString();
3787 if (ShiftName == "lsl" || ShiftName == "LSL")
3789 else if (ShiftName == "asr" || ShiftName == "ASR")
3792 Error(S, "shift operator 'asr' or 'lsl' expected");
3793 return MatchOperand_ParseFail;
3795 Parser.Lex(); // Eat the operator.
3797 // A '#' and a shift amount.
3798 if (Parser.getTok().isNot(AsmToken::Hash) &&
3799 Parser.getTok().isNot(AsmToken::Dollar)) {
3800 Error(Parser.getTok().getLoc(), "'#' expected");
3801 return MatchOperand_ParseFail;
3803 Parser.Lex(); // Eat hash token.
3804 SMLoc ExLoc = Parser.getTok().getLoc();
3806 const MCExpr *ShiftAmount;
3808 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
3809 Error(ExLoc, "malformed shift expression");
3810 return MatchOperand_ParseFail;
3812 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3814 Error(ExLoc, "shift amount must be an immediate");
3815 return MatchOperand_ParseFail;
3818 int64_t Val = CE->getValue();
3820 // Shift amount must be in [1,32]
3821 if (Val < 1 || Val > 32) {
3822 Error(ExLoc, "'asr' shift amount must be in range [1,32]");
3823 return MatchOperand_ParseFail;
3825 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
3826 if (isThumb() && Val == 32) {
3827 Error(ExLoc, "'asr #32' shift amount not allowed in Thumb mode");
3828 return MatchOperand_ParseFail;
3830 if (Val == 32) Val = 0;
3832 // Shift amount must be in [1,32]
3833 if (Val < 0 || Val > 31) {
3834 Error(ExLoc, "'lsr' shift amount must be in range [0,31]");
3835 return MatchOperand_ParseFail;
3839 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, EndLoc));
3841 return MatchOperand_Success;
3844 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
3845 /// of instructions. Legal values are:
3846 /// ror #n 'n' in {0, 8, 16, 24}
3847 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3848 parseRotImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3849 const AsmToken &Tok = Parser.getTok();
3850 SMLoc S = Tok.getLoc();
3851 if (Tok.isNot(AsmToken::Identifier))
3852 return MatchOperand_NoMatch;
3853 StringRef ShiftName = Tok.getString();
3854 if (ShiftName != "ror" && ShiftName != "ROR")
3855 return MatchOperand_NoMatch;
3856 Parser.Lex(); // Eat the operator.
3858 // A '#' and a rotate amount.
3859 if (Parser.getTok().isNot(AsmToken::Hash) &&
3860 Parser.getTok().isNot(AsmToken::Dollar)) {
3861 Error(Parser.getTok().getLoc(), "'#' expected");
3862 return MatchOperand_ParseFail;
3864 Parser.Lex(); // Eat hash token.
3865 SMLoc ExLoc = Parser.getTok().getLoc();
3867 const MCExpr *ShiftAmount;
3869 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
3870 Error(ExLoc, "malformed rotate expression");
3871 return MatchOperand_ParseFail;
3873 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
3875 Error(ExLoc, "rotate amount must be an immediate");
3876 return MatchOperand_ParseFail;
3879 int64_t Val = CE->getValue();
3880 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
3881 // normally, zero is represented in asm by omitting the rotate operand
3883 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
3884 Error(ExLoc, "'ror' rotate amount must be 8, 16, or 24");
3885 return MatchOperand_ParseFail;
3888 Operands.push_back(ARMOperand::CreateRotImm(Val, S, EndLoc));
3890 return MatchOperand_Success;
3893 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3894 parseBitfield(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3895 SMLoc S = Parser.getTok().getLoc();
3896 // The bitfield descriptor is really two operands, the LSB and the width.
3897 if (Parser.getTok().isNot(AsmToken::Hash) &&
3898 Parser.getTok().isNot(AsmToken::Dollar)) {
3899 Error(Parser.getTok().getLoc(), "'#' expected");
3900 return MatchOperand_ParseFail;
3902 Parser.Lex(); // Eat hash token.
3904 const MCExpr *LSBExpr;
3905 SMLoc E = Parser.getTok().getLoc();
3906 if (getParser().parseExpression(LSBExpr)) {
3907 Error(E, "malformed immediate expression");
3908 return MatchOperand_ParseFail;
3910 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
3912 Error(E, "'lsb' operand must be an immediate");
3913 return MatchOperand_ParseFail;
3916 int64_t LSB = CE->getValue();
3917 // The LSB must be in the range [0,31]
3918 if (LSB < 0 || LSB > 31) {
3919 Error(E, "'lsb' operand must be in the range [0,31]");
3920 return MatchOperand_ParseFail;
3922 E = Parser.getTok().getLoc();
3924 // Expect another immediate operand.
3925 if (Parser.getTok().isNot(AsmToken::Comma)) {
3926 Error(Parser.getTok().getLoc(), "too few operands");
3927 return MatchOperand_ParseFail;
3929 Parser.Lex(); // Eat hash token.
3930 if (Parser.getTok().isNot(AsmToken::Hash) &&
3931 Parser.getTok().isNot(AsmToken::Dollar)) {
3932 Error(Parser.getTok().getLoc(), "'#' expected");
3933 return MatchOperand_ParseFail;
3935 Parser.Lex(); // Eat hash token.
3937 const MCExpr *WidthExpr;
3939 if (getParser().parseExpression(WidthExpr, EndLoc)) {
3940 Error(E, "malformed immediate expression");
3941 return MatchOperand_ParseFail;
3943 CE = dyn_cast<MCConstantExpr>(WidthExpr);
3945 Error(E, "'width' operand must be an immediate");
3946 return MatchOperand_ParseFail;
3949 int64_t Width = CE->getValue();
3950 // The LSB must be in the range [1,32-lsb]
3951 if (Width < 1 || Width > 32 - LSB) {
3952 Error(E, "'width' operand must be in the range [1,32-lsb]");
3953 return MatchOperand_ParseFail;
3956 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, EndLoc));
3958 return MatchOperand_Success;
3961 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3962 parsePostIdxReg(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
3963 // Check for a post-index addressing register operand. Specifically:
3964 // postidx_reg := '+' register {, shift}
3965 // | '-' register {, shift}
3966 // | register {, shift}
3968 // This method must return MatchOperand_NoMatch without consuming any tokens
3969 // in the case where there is no match, as other alternatives take other
3971 AsmToken Tok = Parser.getTok();
3972 SMLoc S = Tok.getLoc();
3973 bool haveEaten = false;
3975 if (Tok.is(AsmToken::Plus)) {
3976 Parser.Lex(); // Eat the '+' token.
3978 } else if (Tok.is(AsmToken::Minus)) {
3979 Parser.Lex(); // Eat the '-' token.
3984 SMLoc E = Parser.getTok().getEndLoc();
3985 int Reg = tryParseRegister();
3988 return MatchOperand_NoMatch;
3989 Error(Parser.getTok().getLoc(), "register expected");
3990 return MatchOperand_ParseFail;
3993 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
3994 unsigned ShiftImm = 0;
3995 if (Parser.getTok().is(AsmToken::Comma)) {
3996 Parser.Lex(); // Eat the ','.
3997 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
3998 return MatchOperand_ParseFail;
4000 // FIXME: Only approximates end...may include intervening whitespace.
4001 E = Parser.getTok().getLoc();
4004 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
4007 return MatchOperand_Success;
4010 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
4011 parseAM3Offset(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4012 // Check for a post-index addressing register operand. Specifically:
4013 // am3offset := '+' register
4020 // This method must return MatchOperand_NoMatch without consuming any tokens
4021 // in the case where there is no match, as other alternatives take other
4023 AsmToken Tok = Parser.getTok();
4024 SMLoc S = Tok.getLoc();
4026 // Do immediates first, as we always parse those if we have a '#'.
4027 if (Parser.getTok().is(AsmToken::Hash) ||
4028 Parser.getTok().is(AsmToken::Dollar)) {
4029 Parser.Lex(); // Eat '#' or '$'.
4030 // Explicitly look for a '-', as we need to encode negative zero
4032 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4033 const MCExpr *Offset;
4035 if (getParser().parseExpression(Offset, E))
4036 return MatchOperand_ParseFail;
4037 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4039 Error(S, "constant expression expected");
4040 return MatchOperand_ParseFail;
4042 // Negative zero is encoded as the flag value INT32_MIN.
4043 int32_t Val = CE->getValue();
4044 if (isNegative && Val == 0)
4048 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
4050 return MatchOperand_Success;
4054 bool haveEaten = false;
4056 if (Tok.is(AsmToken::Plus)) {
4057 Parser.Lex(); // Eat the '+' token.
4059 } else if (Tok.is(AsmToken::Minus)) {
4060 Parser.Lex(); // Eat the '-' token.
4065 Tok = Parser.getTok();
4066 int Reg = tryParseRegister();
4069 return MatchOperand_NoMatch;
4070 Error(Tok.getLoc(), "register expected");
4071 return MatchOperand_ParseFail;
4074 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
4075 0, S, Tok.getEndLoc()));
4077 return MatchOperand_Success;
4080 /// cvtT2LdrdPre - Convert parsed operands to MCInst.
4081 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4082 /// when they refer multiple MIOperands inside a single one.
4084 cvtT2LdrdPre(MCInst &Inst,
4085 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4087 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4088 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
4089 // Create a writeback register dummy placeholder.
4090 Inst.addOperand(MCOperand::CreateReg(0));
4092 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
4094 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4097 /// cvtT2StrdPre - Convert parsed operands to MCInst.
4098 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4099 /// when they refer multiple MIOperands inside a single one.
4101 cvtT2StrdPre(MCInst &Inst,
4102 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4103 // Create a writeback register dummy placeholder.
4104 Inst.addOperand(MCOperand::CreateReg(0));
4106 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4107 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
4109 ((ARMOperand*)Operands[4])->addMemImm8s4OffsetOperands(Inst, 2);
4111 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4114 /// cvtLdWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
4115 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4116 /// when they refer multiple MIOperands inside a single one.
4118 cvtLdWriteBackRegT2AddrModeImm8(MCInst &Inst,
4119 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4120 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4122 // Create a writeback register dummy placeholder.
4123 Inst.addOperand(MCOperand::CreateImm(0));
4125 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
4126 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4129 /// cvtStWriteBackRegT2AddrModeImm8 - Convert parsed operands to MCInst.
4130 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4131 /// when they refer multiple MIOperands inside a single one.
4133 cvtStWriteBackRegT2AddrModeImm8(MCInst &Inst,
4134 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4135 // Create a writeback register dummy placeholder.
4136 Inst.addOperand(MCOperand::CreateImm(0));
4137 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4138 ((ARMOperand*)Operands[3])->addMemImm8OffsetOperands(Inst, 2);
4139 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4142 /// cvtLdWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
4143 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4144 /// when they refer multiple MIOperands inside a single one.
4146 cvtLdWriteBackRegAddrMode2(MCInst &Inst,
4147 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4148 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4150 // Create a writeback register dummy placeholder.
4151 Inst.addOperand(MCOperand::CreateImm(0));
4153 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
4154 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4157 /// cvtLdWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
4158 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4159 /// when they refer multiple MIOperands inside a single one.
4161 cvtLdWriteBackRegAddrModeImm12(MCInst &Inst,
4162 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4163 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4165 // Create a writeback register dummy placeholder.
4166 Inst.addOperand(MCOperand::CreateImm(0));
4168 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
4169 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4173 /// cvtStWriteBackRegAddrModeImm12 - Convert parsed operands to MCInst.
4174 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4175 /// when they refer multiple MIOperands inside a single one.
4177 cvtStWriteBackRegAddrModeImm12(MCInst &Inst,
4178 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4179 // Create a writeback register dummy placeholder.
4180 Inst.addOperand(MCOperand::CreateImm(0));
4181 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4182 ((ARMOperand*)Operands[3])->addMemImm12OffsetOperands(Inst, 2);
4183 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4186 /// cvtStWriteBackRegAddrMode2 - Convert parsed operands to MCInst.
4187 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4188 /// when they refer multiple MIOperands inside a single one.
4190 cvtStWriteBackRegAddrMode2(MCInst &Inst,
4191 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4192 // Create a writeback register dummy placeholder.
4193 Inst.addOperand(MCOperand::CreateImm(0));
4194 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4195 ((ARMOperand*)Operands[3])->addAddrMode2Operands(Inst, 3);
4196 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4199 /// cvtStWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
4200 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4201 /// when they refer multiple MIOperands inside a single one.
4203 cvtStWriteBackRegAddrMode3(MCInst &Inst,
4204 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4205 // Create a writeback register dummy placeholder.
4206 Inst.addOperand(MCOperand::CreateImm(0));
4207 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4208 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
4209 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4212 /// cvtLdExtTWriteBackImm - Convert parsed operands to MCInst.
4213 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4214 /// when they refer multiple MIOperands inside a single one.
4216 cvtLdExtTWriteBackImm(MCInst &Inst,
4217 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4219 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4220 // Create a writeback register dummy placeholder.
4221 Inst.addOperand(MCOperand::CreateImm(0));
4223 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
4225 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
4227 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4230 /// cvtLdExtTWriteBackReg - Convert parsed operands to MCInst.
4231 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4232 /// when they refer multiple MIOperands inside a single one.
4234 cvtLdExtTWriteBackReg(MCInst &Inst,
4235 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4237 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4238 // Create a writeback register dummy placeholder.
4239 Inst.addOperand(MCOperand::CreateImm(0));
4241 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
4243 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
4245 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4248 /// cvtStExtTWriteBackImm - Convert parsed operands to MCInst.
4249 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4250 /// when they refer multiple MIOperands inside a single one.
4252 cvtStExtTWriteBackImm(MCInst &Inst,
4253 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4254 // Create a writeback register dummy placeholder.
4255 Inst.addOperand(MCOperand::CreateImm(0));
4257 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4259 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
4261 ((ARMOperand*)Operands[4])->addPostIdxImm8Operands(Inst, 1);
4263 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4266 /// cvtStExtTWriteBackReg - Convert parsed operands to MCInst.
4267 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4268 /// when they refer multiple MIOperands inside a single one.
4270 cvtStExtTWriteBackReg(MCInst &Inst,
4271 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4272 // Create a writeback register dummy placeholder.
4273 Inst.addOperand(MCOperand::CreateImm(0));
4275 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4277 ((ARMOperand*)Operands[3])->addMemNoOffsetOperands(Inst, 1);
4279 ((ARMOperand*)Operands[4])->addPostIdxRegOperands(Inst, 2);
4281 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4284 /// cvtLdrdPre - Convert parsed operands to MCInst.
4285 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4286 /// when they refer multiple MIOperands inside a single one.
4288 cvtLdrdPre(MCInst &Inst,
4289 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4291 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4292 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
4293 // Create a writeback register dummy placeholder.
4294 Inst.addOperand(MCOperand::CreateImm(0));
4296 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
4298 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4301 /// cvtStrdPre - Convert parsed operands to MCInst.
4302 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4303 /// when they refer multiple MIOperands inside a single one.
4305 cvtStrdPre(MCInst &Inst,
4306 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4307 // Create a writeback register dummy placeholder.
4308 Inst.addOperand(MCOperand::CreateImm(0));
4310 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4311 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
4313 ((ARMOperand*)Operands[4])->addAddrMode3Operands(Inst, 3);
4315 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4318 /// cvtLdWriteBackRegAddrMode3 - Convert parsed operands to MCInst.
4319 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4320 /// when they refer multiple MIOperands inside a single one.
4322 cvtLdWriteBackRegAddrMode3(MCInst &Inst,
4323 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4324 ((ARMOperand*)Operands[2])->addRegOperands(Inst, 1);
4325 // Create a writeback register dummy placeholder.
4326 Inst.addOperand(MCOperand::CreateImm(0));
4327 ((ARMOperand*)Operands[3])->addAddrMode3Operands(Inst, 3);
4328 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4331 /// cvtThumbMultiply - Convert parsed operands to MCInst.
4332 /// Needed here because the Asm Gen Matcher can't handle properly tied operands
4333 /// when they refer multiple MIOperands inside a single one.
4335 cvtThumbMultiply(MCInst &Inst,
4336 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4337 ((ARMOperand*)Operands[3])->addRegOperands(Inst, 1);
4338 ((ARMOperand*)Operands[1])->addCCOutOperands(Inst, 1);
4339 // If we have a three-operand form, make sure to set Rn to be the operand
4340 // that isn't the same as Rd.
4342 if (Operands.size() == 6 &&
4343 ((ARMOperand*)Operands[4])->getReg() ==
4344 ((ARMOperand*)Operands[3])->getReg())
4346 ((ARMOperand*)Operands[RegOp])->addRegOperands(Inst, 1);
4347 Inst.addOperand(Inst.getOperand(0));
4348 ((ARMOperand*)Operands[2])->addCondCodeOperands(Inst, 2);
4352 cvtVLDwbFixed(MCInst &Inst,
4353 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4355 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
4356 // Create a writeback register dummy placeholder.
4357 Inst.addOperand(MCOperand::CreateImm(0));
4359 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
4361 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4365 cvtVLDwbRegister(MCInst &Inst,
4366 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4368 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
4369 // Create a writeback register dummy placeholder.
4370 Inst.addOperand(MCOperand::CreateImm(0));
4372 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
4374 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
4376 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4380 cvtVSTwbFixed(MCInst &Inst,
4381 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4382 // Create a writeback register dummy placeholder.
4383 Inst.addOperand(MCOperand::CreateImm(0));
4385 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
4387 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
4389 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4393 cvtVSTwbRegister(MCInst &Inst,
4394 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4395 // Create a writeback register dummy placeholder.
4396 Inst.addOperand(MCOperand::CreateImm(0));
4398 ((ARMOperand*)Operands[4])->addAlignedMemoryOperands(Inst, 2);
4400 ((ARMOperand*)Operands[5])->addRegOperands(Inst, 1);
4402 ((ARMOperand*)Operands[3])->addVecListOperands(Inst, 1);
4404 ((ARMOperand*)Operands[1])->addCondCodeOperands(Inst, 2);
4407 /// Parse an ARM memory expression, return false if successful else return true
4408 /// or an error. The first token must be a '[' when called.
4410 parseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4412 assert(Parser.getTok().is(AsmToken::LBrac) &&
4413 "Token is not a Left Bracket");
4414 S = Parser.getTok().getLoc();
4415 Parser.Lex(); // Eat left bracket token.
4417 const AsmToken &BaseRegTok = Parser.getTok();
4418 int BaseRegNum = tryParseRegister();
4419 if (BaseRegNum == -1)
4420 return Error(BaseRegTok.getLoc(), "register expected");
4422 // The next token must either be a comma, a colon or a closing bracket.
4423 const AsmToken &Tok = Parser.getTok();
4424 if (!Tok.is(AsmToken::Colon) && !Tok.is(AsmToken::Comma) &&
4425 !Tok.is(AsmToken::RBrac))
4426 return Error(Tok.getLoc(), "malformed memory operand");
4428 if (Tok.is(AsmToken::RBrac)) {
4429 E = Tok.getEndLoc();
4430 Parser.Lex(); // Eat right bracket token.
4432 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
4433 0, 0, false, S, E));
4435 // If there's a pre-indexing writeback marker, '!', just add it as a token
4436 // operand. It's rather odd, but syntactically valid.
4437 if (Parser.getTok().is(AsmToken::Exclaim)) {
4438 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4439 Parser.Lex(); // Eat the '!'.
4445 assert((Tok.is(AsmToken::Colon) || Tok.is(AsmToken::Comma)) &&
4446 "Lost colon or comma in memory operand?!");
4447 if (Tok.is(AsmToken::Comma)) {
4448 Parser.Lex(); // Eat the comma.
4451 // If we have a ':', it's an alignment specifier.
4452 if (Parser.getTok().is(AsmToken::Colon)) {
4453 Parser.Lex(); // Eat the ':'.
4454 E = Parser.getTok().getLoc();
4457 if (getParser().parseExpression(Expr))
4460 // The expression has to be a constant. Memory references with relocations
4461 // don't come through here, as they use the <label> forms of the relevant
4463 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4465 return Error (E, "constant expression expected");
4468 switch (CE->getValue()) {
4471 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
4472 case 16: Align = 2; break;
4473 case 32: Align = 4; break;
4474 case 64: Align = 8; break;
4475 case 128: Align = 16; break;
4476 case 256: Align = 32; break;
4479 // Now we should have the closing ']'
4480 if (Parser.getTok().isNot(AsmToken::RBrac))
4481 return Error(Parser.getTok().getLoc(), "']' expected");
4482 E = Parser.getTok().getEndLoc();
4483 Parser.Lex(); // Eat right bracket token.
4485 // Don't worry about range checking the value here. That's handled by
4486 // the is*() predicates.
4487 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0,
4488 ARM_AM::no_shift, 0, Align,
4491 // If there's a pre-indexing writeback marker, '!', just add it as a token
4493 if (Parser.getTok().is(AsmToken::Exclaim)) {
4494 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4495 Parser.Lex(); // Eat the '!'.
4501 // If we have a '#', it's an immediate offset, else assume it's a register
4502 // offset. Be friendly and also accept a plain integer (without a leading
4503 // hash) for gas compatibility.
4504 if (Parser.getTok().is(AsmToken::Hash) ||
4505 Parser.getTok().is(AsmToken::Dollar) ||
4506 Parser.getTok().is(AsmToken::Integer)) {
4507 if (Parser.getTok().isNot(AsmToken::Integer))
4508 Parser.Lex(); // Eat '#' or '$'.
4509 E = Parser.getTok().getLoc();
4511 bool isNegative = getParser().getTok().is(AsmToken::Minus);
4512 const MCExpr *Offset;
4513 if (getParser().parseExpression(Offset))
4516 // The expression has to be a constant. Memory references with relocations
4517 // don't come through here, as they use the <label> forms of the relevant
4519 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4521 return Error (E, "constant expression expected");
4523 // If the constant was #-0, represent it as INT32_MIN.
4524 int32_t Val = CE->getValue();
4525 if (isNegative && Val == 0)
4526 CE = MCConstantExpr::Create(INT32_MIN, getContext());
4528 // Now we should have the closing ']'
4529 if (Parser.getTok().isNot(AsmToken::RBrac))
4530 return Error(Parser.getTok().getLoc(), "']' expected");
4531 E = Parser.getTok().getEndLoc();
4532 Parser.Lex(); // Eat right bracket token.
4534 // Don't worry about range checking the value here. That's handled by
4535 // the is*() predicates.
4536 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
4537 ARM_AM::no_shift, 0, 0,
4540 // If there's a pre-indexing writeback marker, '!', just add it as a token
4542 if (Parser.getTok().is(AsmToken::Exclaim)) {
4543 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4544 Parser.Lex(); // Eat the '!'.
4550 // The register offset is optionally preceded by a '+' or '-'
4551 bool isNegative = false;
4552 if (Parser.getTok().is(AsmToken::Minus)) {
4554 Parser.Lex(); // Eat the '-'.
4555 } else if (Parser.getTok().is(AsmToken::Plus)) {
4557 Parser.Lex(); // Eat the '+'.
4560 E = Parser.getTok().getLoc();
4561 int OffsetRegNum = tryParseRegister();
4562 if (OffsetRegNum == -1)
4563 return Error(E, "register expected");
4565 // If there's a shift operator, handle it.
4566 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
4567 unsigned ShiftImm = 0;
4568 if (Parser.getTok().is(AsmToken::Comma)) {
4569 Parser.Lex(); // Eat the ','.
4570 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
4574 // Now we should have the closing ']'
4575 if (Parser.getTok().isNot(AsmToken::RBrac))
4576 return Error(Parser.getTok().getLoc(), "']' expected");
4577 E = Parser.getTok().getEndLoc();
4578 Parser.Lex(); // Eat right bracket token.
4580 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, OffsetRegNum,
4581 ShiftType, ShiftImm, 0, isNegative,
4584 // If there's a pre-indexing writeback marker, '!', just add it as a token
4586 if (Parser.getTok().is(AsmToken::Exclaim)) {
4587 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4588 Parser.Lex(); // Eat the '!'.
4594 /// parseMemRegOffsetShift - one of these two:
4595 /// ( lsl | lsr | asr | ror ) , # shift_amount
4597 /// return true if it parses a shift otherwise it returns false.
4598 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
4600 SMLoc Loc = Parser.getTok().getLoc();
4601 const AsmToken &Tok = Parser.getTok();
4602 if (Tok.isNot(AsmToken::Identifier))
4604 StringRef ShiftName = Tok.getString();
4605 if (ShiftName == "lsl" || ShiftName == "LSL" ||
4606 ShiftName == "asl" || ShiftName == "ASL")
4608 else if (ShiftName == "lsr" || ShiftName == "LSR")
4610 else if (ShiftName == "asr" || ShiftName == "ASR")
4612 else if (ShiftName == "ror" || ShiftName == "ROR")
4614 else if (ShiftName == "rrx" || ShiftName == "RRX")
4617 return Error(Loc, "illegal shift operator");
4618 Parser.Lex(); // Eat shift type token.
4620 // rrx stands alone.
4622 if (St != ARM_AM::rrx) {
4623 Loc = Parser.getTok().getLoc();
4624 // A '#' and a shift amount.
4625 const AsmToken &HashTok = Parser.getTok();
4626 if (HashTok.isNot(AsmToken::Hash) &&
4627 HashTok.isNot(AsmToken::Dollar))
4628 return Error(HashTok.getLoc(), "'#' expected");
4629 Parser.Lex(); // Eat hash token.
4632 if (getParser().parseExpression(Expr))
4634 // Range check the immediate.
4635 // lsl, ror: 0 <= imm <= 31
4636 // lsr, asr: 0 <= imm <= 32
4637 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4639 return Error(Loc, "shift amount must be an immediate");
4640 int64_t Imm = CE->getValue();
4642 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
4643 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
4644 return Error(Loc, "immediate shift value out of range");
4645 // If <ShiftTy> #0, turn it into a no_shift.
4648 // For consistency, treat lsr #32 and asr #32 as having immediate value 0.
4657 /// parseFPImm - A floating point immediate expression operand.
4658 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
4659 parseFPImm(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
4660 // Anything that can accept a floating point constant as an operand
4661 // needs to go through here, as the regular parseExpression is
4664 // This routine still creates a generic Immediate operand, containing
4665 // a bitcast of the 64-bit floating point value. The various operands
4666 // that accept floats can check whether the value is valid for them
4667 // via the standard is*() predicates.
4669 SMLoc S = Parser.getTok().getLoc();
4671 if (Parser.getTok().isNot(AsmToken::Hash) &&
4672 Parser.getTok().isNot(AsmToken::Dollar))
4673 return MatchOperand_NoMatch;
4675 // Disambiguate the VMOV forms that can accept an FP immediate.
4676 // vmov.f32 <sreg>, #imm
4677 // vmov.f64 <dreg>, #imm
4678 // vmov.f32 <dreg>, #imm @ vector f32x2
4679 // vmov.f32 <qreg>, #imm @ vector f32x4
4681 // There are also the NEON VMOV instructions which expect an
4682 // integer constant. Make sure we don't try to parse an FPImm
4684 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4685 ARMOperand *TyOp = static_cast<ARMOperand*>(Operands[2]);
4686 if (!TyOp->isToken() || (TyOp->getToken() != ".f32" &&
4687 TyOp->getToken() != ".f64"))
4688 return MatchOperand_NoMatch;
4690 Parser.Lex(); // Eat '#' or '$'.
4692 // Handle negation, as that still comes through as a separate token.
4693 bool isNegative = false;
4694 if (Parser.getTok().is(AsmToken::Minus)) {
4698 const AsmToken &Tok = Parser.getTok();
4699 SMLoc Loc = Tok.getLoc();
4700 if (Tok.is(AsmToken::Real)) {
4701 APFloat RealVal(APFloat::IEEEsingle, Tok.getString());
4702 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4703 // If we had a '-' in front, toggle the sign bit.
4704 IntVal ^= (uint64_t)isNegative << 31;
4705 Parser.Lex(); // Eat the token.
4706 Operands.push_back(ARMOperand::CreateImm(
4707 MCConstantExpr::Create(IntVal, getContext()),
4708 S, Parser.getTok().getLoc()));
4709 return MatchOperand_Success;
4711 // Also handle plain integers. Instructions which allow floating point
4712 // immediates also allow a raw encoded 8-bit value.
4713 if (Tok.is(AsmToken::Integer)) {
4714 int64_t Val = Tok.getIntVal();
4715 Parser.Lex(); // Eat the token.
4716 if (Val > 255 || Val < 0) {
4717 Error(Loc, "encoded floating point value out of range");
4718 return MatchOperand_ParseFail;
4720 double RealVal = ARM_AM::getFPImmFloat(Val);
4721 Val = APFloat(APFloat::IEEEdouble, RealVal).bitcastToAPInt().getZExtValue();
4722 Operands.push_back(ARMOperand::CreateImm(
4723 MCConstantExpr::Create(Val, getContext()), S,
4724 Parser.getTok().getLoc()));
4725 return MatchOperand_Success;
4728 Error(Loc, "invalid floating point immediate");
4729 return MatchOperand_ParseFail;
4732 /// Parse a arm instruction operand. For now this parses the operand regardless
4733 /// of the mnemonic.
4734 bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
4735 StringRef Mnemonic) {
4738 // Check if the current operand has a custom associated parser, if so, try to
4739 // custom parse the operand, or fallback to the general approach.
4740 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4741 if (ResTy == MatchOperand_Success)
4743 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4744 // there was a match, but an error occurred, in which case, just return that
4745 // the operand parsing failed.
4746 if (ResTy == MatchOperand_ParseFail)
4749 switch (getLexer().getKind()) {
4751 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4753 case AsmToken::Identifier: {
4754 // If we've seen a branch mnemonic, the next operand must be a label. This
4755 // is true even if the label is a register name. So "br r1" means branch to
4757 bool ExpectLabel = Mnemonic == "b" || Mnemonic == "bl";
4759 if (!tryParseRegisterWithWriteBack(Operands))
4761 int Res = tryParseShiftRegister(Operands);
4762 if (Res == 0) // success
4764 else if (Res == -1) // irrecoverable error
4766 // If this is VMRS, check for the apsr_nzcv operand.
4767 if (Mnemonic == "vmrs" &&
4768 Parser.getTok().getString().equals_lower("apsr_nzcv")) {
4769 S = Parser.getTok().getLoc();
4771 Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S));
4776 // Fall though for the Identifier case that is not a register or a
4779 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4780 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4781 case AsmToken::String: // quoted label names.
4782 case AsmToken::Dot: { // . as a branch target
4783 // This was not a register so parse other operands that start with an
4784 // identifier (like labels) as expressions and create them as immediates.
4785 const MCExpr *IdVal;
4786 S = Parser.getTok().getLoc();
4787 if (getParser().parseExpression(IdVal))
4789 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4790 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4793 case AsmToken::LBrac:
4794 return parseMemory(Operands);
4795 case AsmToken::LCurly:
4796 return parseRegisterList(Operands);
4797 case AsmToken::Dollar:
4798 case AsmToken::Hash: {
4799 // #42 -> immediate.
4800 S = Parser.getTok().getLoc();
4803 if (Parser.getTok().isNot(AsmToken::Colon)) {
4804 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4805 const MCExpr *ImmVal;
4806 if (getParser().parseExpression(ImmVal))
4808 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4810 int32_t Val = CE->getValue();
4811 if (isNegative && Val == 0)
4812 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4814 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4815 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4817 // There can be a trailing '!' on operands that we want as a separate
4818 // '!' Token operand. Handle that here. For example, the compatibilty
4819 // alias for 'srsdb sp!, #imm' is 'srsdb #imm!'.
4820 if (Parser.getTok().is(AsmToken::Exclaim)) {
4821 Operands.push_back(ARMOperand::CreateToken(Parser.getTok().getString(),
4822 Parser.getTok().getLoc()));
4823 Parser.Lex(); // Eat exclaim token
4827 // w/ a ':' after the '#', it's just like a plain ':'.
4830 case AsmToken::Colon: {
4831 // ":lower16:" and ":upper16:" expression prefixes
4832 // FIXME: Check it's an expression prefix,
4833 // e.g. (FOO - :lower16:BAR) isn't legal.
4834 ARMMCExpr::VariantKind RefKind;
4835 if (parsePrefix(RefKind))
4838 const MCExpr *SubExprVal;
4839 if (getParser().parseExpression(SubExprVal))
4842 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4844 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4845 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4851 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4852 // :lower16: and :upper16:.
4853 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4854 RefKind = ARMMCExpr::VK_ARM_None;
4856 // :lower16: and :upper16: modifiers
4857 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4858 Parser.Lex(); // Eat ':'
4860 if (getLexer().isNot(AsmToken::Identifier)) {
4861 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4865 StringRef IDVal = Parser.getTok().getIdentifier();
4866 if (IDVal == "lower16") {
4867 RefKind = ARMMCExpr::VK_ARM_LO16;
4868 } else if (IDVal == "upper16") {
4869 RefKind = ARMMCExpr::VK_ARM_HI16;
4871 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4876 if (getLexer().isNot(AsmToken::Colon)) {
4877 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4880 Parser.Lex(); // Eat the last ':'
4884 /// \brief Given a mnemonic, split out possible predication code and carry
4885 /// setting letters to form a canonical mnemonic and flags.
4887 // FIXME: Would be nice to autogen this.
4888 // FIXME: This is a bit of a maze of special cases.
4889 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4890 unsigned &PredicationCode,
4892 unsigned &ProcessorIMod,
4893 StringRef &ITMask) {
4894 PredicationCode = ARMCC::AL;
4895 CarrySetting = false;
4898 // Ignore some mnemonics we know aren't predicated forms.
4900 // FIXME: Would be nice to autogen this.
4901 if ((Mnemonic == "movs" && isThumb()) ||
4902 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4903 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4904 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4905 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4906 Mnemonic == "vaclt" || Mnemonic == "vacle" ||
4907 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4908 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4909 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4910 Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" ||
4911 Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" ||
4912 Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" ||
4913 Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic.startswith("vsel"))
4916 // First, split out any predication code. Ignore mnemonics we know aren't
4917 // predicated but do have a carry-set and so weren't caught above.
4918 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4919 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4920 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4921 Mnemonic != "sbcs" && Mnemonic != "rscs") {
4922 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
4923 .Case("eq", ARMCC::EQ)
4924 .Case("ne", ARMCC::NE)
4925 .Case("hs", ARMCC::HS)
4926 .Case("cs", ARMCC::HS)
4927 .Case("lo", ARMCC::LO)
4928 .Case("cc", ARMCC::LO)
4929 .Case("mi", ARMCC::MI)
4930 .Case("pl", ARMCC::PL)
4931 .Case("vs", ARMCC::VS)
4932 .Case("vc", ARMCC::VC)
4933 .Case("hi", ARMCC::HI)
4934 .Case("ls", ARMCC::LS)
4935 .Case("ge", ARMCC::GE)
4936 .Case("lt", ARMCC::LT)
4937 .Case("gt", ARMCC::GT)
4938 .Case("le", ARMCC::LE)
4939 .Case("al", ARMCC::AL)
4942 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
4943 PredicationCode = CC;
4947 // Next, determine if we have a carry setting bit. We explicitly ignore all
4948 // the instructions we know end in 's'.
4949 if (Mnemonic.endswith("s") &&
4950 !(Mnemonic == "cps" || Mnemonic == "mls" ||
4951 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
4952 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
4953 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
4954 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
4955 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
4956 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
4957 Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" ||
4958 Mnemonic == "vfms" || Mnemonic == "vfnms" ||
4959 (Mnemonic == "movs" && isThumb()))) {
4960 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
4961 CarrySetting = true;
4964 // The "cps" instruction can have a interrupt mode operand which is glued into
4965 // the mnemonic. Check if this is the case, split it and parse the imod op
4966 if (Mnemonic.startswith("cps")) {
4967 // Split out any imod code.
4969 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
4970 .Case("ie", ARM_PROC::IE)
4971 .Case("id", ARM_PROC::ID)
4974 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
4975 ProcessorIMod = IMod;
4979 // The "it" instruction has the condition mask on the end of the mnemonic.
4980 if (Mnemonic.startswith("it")) {
4981 ITMask = Mnemonic.slice(2, Mnemonic.size());
4982 Mnemonic = Mnemonic.slice(0, 2);
4988 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
4989 /// inclusion of carry set or predication code operands.
4991 // FIXME: It would be nice to autogen this.
4993 getMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
4994 bool &CanAcceptPredicationCode) {
4995 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
4996 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
4997 Mnemonic == "add" || Mnemonic == "adc" ||
4998 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
4999 Mnemonic == "orr" || Mnemonic == "mvn" ||
5000 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
5001 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
5002 Mnemonic == "vfm" || Mnemonic == "vfnm" ||
5003 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
5004 Mnemonic == "mla" || Mnemonic == "smlal" ||
5005 Mnemonic == "umlal" || Mnemonic == "umull"))) {
5006 CanAcceptCarrySet = true;
5008 CanAcceptCarrySet = false;
5010 if (Mnemonic == "bkpt" || Mnemonic == "cbnz" || Mnemonic == "setend" ||
5011 Mnemonic == "cps" || Mnemonic == "it" || Mnemonic == "cbz" ||
5012 Mnemonic == "trap" || Mnemonic == "setend" ||
5013 Mnemonic.startswith("cps") || Mnemonic.startswith("vsel") ||
5014 Mnemonic == "vmaxnm" || Mnemonic == "vminnm" || Mnemonic == "vcvta" ||
5015 Mnemonic == "vcvtn" || Mnemonic == "vcvtp" || Mnemonic == "vcvtm" ||
5016 Mnemonic == "vrinta" || Mnemonic == "vrintn" || Mnemonic == "vrintp" ||
5017 Mnemonic == "vrintm") {
5018 // These mnemonics are never predicable
5019 CanAcceptPredicationCode = false;
5020 } else if (!isThumb()) {
5021 // Some instructions are only predicable in Thumb mode
5022 CanAcceptPredicationCode
5023 = Mnemonic != "cdp2" && Mnemonic != "clrex" && Mnemonic != "mcr2" &&
5024 Mnemonic != "mcrr2" && Mnemonic != "mrc2" && Mnemonic != "mrrc2" &&
5025 Mnemonic != "dmb" && Mnemonic != "dsb" && Mnemonic != "isb" &&
5026 Mnemonic != "pld" && Mnemonic != "pli" && Mnemonic != "pldw" &&
5027 Mnemonic != "ldc2" && Mnemonic != "ldc2l" &&
5028 Mnemonic != "stc2" && Mnemonic != "stc2l" &&
5029 !Mnemonic.startswith("rfe") && !Mnemonic.startswith("srs");
5030 } else if (isThumbOne()) {
5031 CanAcceptPredicationCode = Mnemonic != "nop" && Mnemonic != "movs";
5033 CanAcceptPredicationCode = true;
5036 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
5037 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5038 // FIXME: This is all horribly hacky. We really need a better way to deal
5039 // with optional operands like this in the matcher table.
5041 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
5042 // another does not. Specifically, the MOVW instruction does not. So we
5043 // special case it here and remove the defaulted (non-setting) cc_out
5044 // operand if that's the instruction we're trying to match.
5046 // We do this as post-processing of the explicit operands rather than just
5047 // conditionally adding the cc_out in the first place because we need
5048 // to check the type of the parsed immediate operand.
5049 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
5050 !static_cast<ARMOperand*>(Operands[4])->isARMSOImm() &&
5051 static_cast<ARMOperand*>(Operands[4])->isImm0_65535Expr() &&
5052 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
5055 // Register-register 'add' for thumb does not have a cc_out operand
5056 // when there are only two register operands.
5057 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
5058 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5059 static_cast<ARMOperand*>(Operands[4])->isReg() &&
5060 static_cast<ARMOperand*>(Operands[1])->getReg() == 0)
5062 // Register-register 'add' for thumb does not have a cc_out operand
5063 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
5064 // have to check the immediate range here since Thumb2 has a variant
5065 // that can handle a different range and has a cc_out operand.
5066 if (((isThumb() && Mnemonic == "add") ||
5067 (isThumbTwo() && Mnemonic == "sub")) &&
5068 Operands.size() == 6 &&
5069 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5070 static_cast<ARMOperand*>(Operands[4])->isReg() &&
5071 static_cast<ARMOperand*>(Operands[4])->getReg() == ARM::SP &&
5072 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
5073 ((Mnemonic == "add" &&static_cast<ARMOperand*>(Operands[5])->isReg()) ||
5074 static_cast<ARMOperand*>(Operands[5])->isImm0_1020s4()))
5076 // For Thumb2, add/sub immediate does not have a cc_out operand for the
5077 // imm0_4095 variant. That's the least-preferred variant when
5078 // selecting via the generic "add" mnemonic, so to know that we
5079 // should remove the cc_out operand, we have to explicitly check that
5080 // it's not one of the other variants. Ugh.
5081 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
5082 Operands.size() == 6 &&
5083 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5084 static_cast<ARMOperand*>(Operands[4])->isReg() &&
5085 static_cast<ARMOperand*>(Operands[5])->isImm()) {
5086 // Nest conditions rather than one big 'if' statement for readability.
5088 // If both registers are low, we're in an IT block, and the immediate is
5089 // in range, we should use encoding T1 instead, which has a cc_out.
5091 isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) &&
5092 isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) &&
5093 static_cast<ARMOperand*>(Operands[5])->isImm0_7())
5095 // Check against T3. If the second register is the PC, this is an
5096 // alternate form of ADR, which uses encoding T4, so check for that too.
5097 if (static_cast<ARMOperand*>(Operands[4])->getReg() != ARM::PC &&
5098 static_cast<ARMOperand*>(Operands[5])->isT2SOImm())
5101 // Otherwise, we use encoding T4, which does not have a cc_out
5106 // The thumb2 multiply instruction doesn't have a CCOut register, so
5107 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
5108 // use the 16-bit encoding or not.
5109 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
5110 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
5111 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5112 static_cast<ARMOperand*>(Operands[4])->isReg() &&
5113 static_cast<ARMOperand*>(Operands[5])->isReg() &&
5114 // If the registers aren't low regs, the destination reg isn't the
5115 // same as one of the source regs, or the cc_out operand is zero
5116 // outside of an IT block, we have to use the 32-bit encoding, so
5117 // remove the cc_out operand.
5118 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
5119 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
5120 !isARMLowRegister(static_cast<ARMOperand*>(Operands[5])->getReg()) ||
5122 (static_cast<ARMOperand*>(Operands[3])->getReg() !=
5123 static_cast<ARMOperand*>(Operands[5])->getReg() &&
5124 static_cast<ARMOperand*>(Operands[3])->getReg() !=
5125 static_cast<ARMOperand*>(Operands[4])->getReg())))
5128 // Also check the 'mul' syntax variant that doesn't specify an explicit
5129 // destination register.
5130 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
5131 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
5132 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5133 static_cast<ARMOperand*>(Operands[4])->isReg() &&
5134 // If the registers aren't low regs or the cc_out operand is zero
5135 // outside of an IT block, we have to use the 32-bit encoding, so
5136 // remove the cc_out operand.
5137 (!isARMLowRegister(static_cast<ARMOperand*>(Operands[3])->getReg()) ||
5138 !isARMLowRegister(static_cast<ARMOperand*>(Operands[4])->getReg()) ||
5144 // Register-register 'add/sub' for thumb does not have a cc_out operand
5145 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
5146 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
5147 // right, this will result in better diagnostics (which operand is off)
5149 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
5150 (Operands.size() == 5 || Operands.size() == 6) &&
5151 static_cast<ARMOperand*>(Operands[3])->isReg() &&
5152 static_cast<ARMOperand*>(Operands[3])->getReg() == ARM::SP &&
5153 static_cast<ARMOperand*>(Operands[1])->getReg() == 0 &&
5154 (static_cast<ARMOperand*>(Operands[4])->isImm() ||
5155 (Operands.size() == 6 &&
5156 static_cast<ARMOperand*>(Operands[5])->isImm())))
5162 bool ARMAsmParser::shouldOmitPredicateOperand(
5163 StringRef Mnemonic, SmallVectorImpl<MCParsedAsmOperand *> &Operands) {
5164 // VRINT{Z, R, X} have a predicate operand in VFP, but not in NEON
5165 unsigned RegIdx = 3;
5166 if ((Mnemonic == "vrintz" || Mnemonic == "vrintx" || Mnemonic == "vrintr") &&
5167 static_cast<ARMOperand *>(Operands[2])->getToken() == ".f32") {
5168 if (static_cast<ARMOperand *>(Operands[3])->isToken() &&
5169 static_cast<ARMOperand *>(Operands[3])->getToken() == ".f32")
5172 if (static_cast<ARMOperand *>(Operands[RegIdx])->isReg() &&
5173 (ARMMCRegisterClasses[ARM::DPRRegClassID]
5174 .contains(static_cast<ARMOperand *>(Operands[RegIdx])->getReg()) ||
5175 ARMMCRegisterClasses[ARM::QPRRegClassID]
5176 .contains(static_cast<ARMOperand *>(Operands[RegIdx])->getReg())))
5181 static bool isDataTypeToken(StringRef Tok) {
5182 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
5183 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
5184 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
5185 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
5186 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
5187 Tok == ".f" || Tok == ".d";
5190 // FIXME: This bit should probably be handled via an explicit match class
5191 // in the .td files that matches the suffix instead of having it be
5192 // a literal string token the way it is now.
5193 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
5194 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
5196 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features,
5197 unsigned VariantID);
5198 /// Parse an arm instruction mnemonic followed by its operands.
5199 bool ARMAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
5201 SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5202 // Apply mnemonic aliases before doing anything else, as the destination
5203 // mnemnonic may include suffices and we want to handle them normally.
5204 // The generic tblgen'erated code does this later, at the start of
5205 // MatchInstructionImpl(), but that's too late for aliases that include
5206 // any sort of suffix.
5207 unsigned AvailableFeatures = getAvailableFeatures();
5208 unsigned AssemblerDialect = getParser().getAssemblerDialect();
5209 applyMnemonicAliases(Name, AvailableFeatures, AssemblerDialect);
5211 // First check for the ARM-specific .req directive.
5212 if (Parser.getTok().is(AsmToken::Identifier) &&
5213 Parser.getTok().getIdentifier() == ".req") {
5214 parseDirectiveReq(Name, NameLoc);
5215 // We always return 'error' for this, as we're done with this
5216 // statement and don't need to match the 'instruction."
5220 // Create the leading tokens for the mnemonic, split by '.' characters.
5221 size_t Start = 0, Next = Name.find('.');
5222 StringRef Mnemonic = Name.slice(Start, Next);
5224 // Split out the predication code and carry setting flag from the mnemonic.
5225 unsigned PredicationCode;
5226 unsigned ProcessorIMod;
5229 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
5230 ProcessorIMod, ITMask);
5232 // In Thumb1, only the branch (B) instruction can be predicated.
5233 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
5234 Parser.eatToEndOfStatement();
5235 return Error(NameLoc, "conditional execution not supported in Thumb1");
5238 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
5240 // Handle the IT instruction ITMask. Convert it to a bitmask. This
5241 // is the mask as it will be for the IT encoding if the conditional
5242 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
5243 // where the conditional bit0 is zero, the instruction post-processing
5244 // will adjust the mask accordingly.
5245 if (Mnemonic == "it") {
5246 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
5247 if (ITMask.size() > 3) {
5248 Parser.eatToEndOfStatement();
5249 return Error(Loc, "too many conditions on IT instruction");
5252 for (unsigned i = ITMask.size(); i != 0; --i) {
5253 char pos = ITMask[i - 1];
5254 if (pos != 't' && pos != 'e') {
5255 Parser.eatToEndOfStatement();
5256 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
5259 if (ITMask[i - 1] == 't')
5262 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
5265 // FIXME: This is all a pretty gross hack. We should automatically handle
5266 // optional operands like this via tblgen.
5268 // Next, add the CCOut and ConditionCode operands, if needed.
5270 // For mnemonics which can ever incorporate a carry setting bit or predication
5271 // code, our matching model involves us always generating CCOut and
5272 // ConditionCode operands to match the mnemonic "as written" and then we let
5273 // the matcher deal with finding the right instruction or generating an
5274 // appropriate error.
5275 bool CanAcceptCarrySet, CanAcceptPredicationCode;
5276 getMnemonicAcceptInfo(Mnemonic, CanAcceptCarrySet, CanAcceptPredicationCode);
5278 // If we had a carry-set on an instruction that can't do that, issue an
5280 if (!CanAcceptCarrySet && CarrySetting) {
5281 Parser.eatToEndOfStatement();
5282 return Error(NameLoc, "instruction '" + Mnemonic +
5283 "' can not set flags, but 's' suffix specified");
5285 // If we had a predication code on an instruction that can't do that, issue an
5287 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
5288 Parser.eatToEndOfStatement();
5289 return Error(NameLoc, "instruction '" + Mnemonic +
5290 "' is not predicable, but condition code specified");
5293 // Add the carry setting operand, if necessary.
5294 if (CanAcceptCarrySet) {
5295 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
5296 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
5300 // Add the predication code operand, if necessary.
5301 if (CanAcceptPredicationCode) {
5302 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
5304 Operands.push_back(ARMOperand::CreateCondCode(
5305 ARMCC::CondCodes(PredicationCode), Loc));
5308 // Add the processor imod operand, if necessary.
5309 if (ProcessorIMod) {
5310 Operands.push_back(ARMOperand::CreateImm(
5311 MCConstantExpr::Create(ProcessorIMod, getContext()),
5315 // Add the remaining tokens in the mnemonic.
5316 while (Next != StringRef::npos) {
5318 Next = Name.find('.', Start + 1);
5319 StringRef ExtraToken = Name.slice(Start, Next);
5321 // Some NEON instructions have an optional datatype suffix that is
5322 // completely ignored. Check for that.
5323 if (isDataTypeToken(ExtraToken) &&
5324 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
5327 // For for ARM mode generate an error if the .n qualifier is used.
5328 if (ExtraToken == ".n" && !isThumb()) {
5329 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
5330 return Error(Loc, "instruction with .n (narrow) qualifier not allowed in "
5334 // The .n qualifier is always discarded as that is what the tables
5335 // and matcher expect. In ARM mode the .w qualifier has no effect,
5336 // so discard it to avoid errors that can be caused by the matcher.
5337 if (ExtraToken != ".n" && (isThumb() || ExtraToken != ".w")) {
5338 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
5339 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
5343 // Read the remaining operands.
5344 if (getLexer().isNot(AsmToken::EndOfStatement)) {
5345 // Read the first operand.
5346 if (parseOperand(Operands, Mnemonic)) {
5347 Parser.eatToEndOfStatement();
5351 while (getLexer().is(AsmToken::Comma)) {
5352 Parser.Lex(); // Eat the comma.
5354 // Parse and remember the operand.
5355 if (parseOperand(Operands, Mnemonic)) {
5356 Parser.eatToEndOfStatement();
5362 if (getLexer().isNot(AsmToken::EndOfStatement)) {
5363 SMLoc Loc = getLexer().getLoc();
5364 Parser.eatToEndOfStatement();
5365 return Error(Loc, "unexpected token in argument list");
5368 Parser.Lex(); // Consume the EndOfStatement
5370 // Some instructions, mostly Thumb, have forms for the same mnemonic that
5371 // do and don't have a cc_out optional-def operand. With some spot-checks
5372 // of the operand list, we can figure out which variant we're trying to
5373 // parse and adjust accordingly before actually matching. We shouldn't ever
5374 // try to remove a cc_out operand that was explicitly set on the the
5375 // mnemonic, of course (CarrySetting == true). Reason number #317 the
5376 // table driven matcher doesn't fit well with the ARM instruction set.
5377 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands)) {
5378 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
5379 Operands.erase(Operands.begin() + 1);
5383 // Some instructions have the same mnemonic, but don't always
5384 // have a predicate. Distinguish them here and delete the
5385 // predicate if needed.
5386 if (shouldOmitPredicateOperand(Mnemonic, Operands)) {
5387 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
5388 Operands.erase(Operands.begin() + 1);
5392 // ARM mode 'blx' need special handling, as the register operand version
5393 // is predicable, but the label operand version is not. So, we can't rely
5394 // on the Mnemonic based checking to correctly figure out when to put
5395 // a k_CondCode operand in the list. If we're trying to match the label
5396 // version, remove the k_CondCode operand here.
5397 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
5398 static_cast<ARMOperand*>(Operands[2])->isImm()) {
5399 ARMOperand *Op = static_cast<ARMOperand*>(Operands[1]);
5400 Operands.erase(Operands.begin() + 1);
5404 // Adjust operands of ldrexd/strexd to MCK_GPRPair.
5405 // ldrexd/strexd require even/odd GPR pair. To enforce this constraint,
5406 // a single GPRPair reg operand is used in the .td file to replace the two
5407 // GPRs. However, when parsing from asm, the two GRPs cannot be automatically
5408 // expressed as a GPRPair, so we have to manually merge them.
5409 // FIXME: We would really like to be able to tablegen'erate this.
5410 if (!isThumb() && Operands.size() > 4 &&
5411 (Mnemonic == "ldrexd" || Mnemonic == "strexd")) {
5412 bool isLoad = (Mnemonic == "ldrexd");
5413 unsigned Idx = isLoad ? 2 : 3;
5414 ARMOperand* Op1 = static_cast<ARMOperand*>(Operands[Idx]);
5415 ARMOperand* Op2 = static_cast<ARMOperand*>(Operands[Idx+1]);
5417 const MCRegisterClass& MRC = MRI->getRegClass(ARM::GPRRegClassID);
5418 // Adjust only if Op1 and Op2 are GPRs.
5419 if (Op1->isReg() && Op2->isReg() && MRC.contains(Op1->getReg()) &&
5420 MRC.contains(Op2->getReg())) {
5421 unsigned Reg1 = Op1->getReg();
5422 unsigned Reg2 = Op2->getReg();
5423 unsigned Rt = MRI->getEncodingValue(Reg1);
5424 unsigned Rt2 = MRI->getEncodingValue(Reg2);
5426 // Rt2 must be Rt + 1 and Rt must be even.
5427 if (Rt + 1 != Rt2 || (Rt & 1)) {
5428 Error(Op2->getStartLoc(), isLoad ?
5429 "destination operands must be sequential" :
5430 "source operands must be sequential");
5433 unsigned NewReg = MRI->getMatchingSuperReg(Reg1, ARM::gsub_0,
5434 &(MRI->getRegClass(ARM::GPRPairRegClassID)));
5435 Operands.erase(Operands.begin() + Idx, Operands.begin() + Idx + 2);
5436 Operands.insert(Operands.begin() + Idx, ARMOperand::CreateReg(
5437 NewReg, Op1->getStartLoc(), Op2->getEndLoc()));
5446 // Validate context-sensitive operand constraints.
5448 // return 'true' if register list contains non-low GPR registers,
5449 // 'false' otherwise. If Reg is in the register list or is HiReg, set
5450 // 'containsReg' to true.
5451 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
5452 unsigned HiReg, bool &containsReg) {
5453 containsReg = false;
5454 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
5455 unsigned OpReg = Inst.getOperand(i).getReg();
5458 // Anything other than a low register isn't legal here.
5459 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
5465 // Check if the specified regisgter is in the register list of the inst,
5466 // starting at the indicated operand number.
5467 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
5468 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
5469 unsigned OpReg = Inst.getOperand(i).getReg();
5476 // FIXME: We would really prefer to have MCInstrInfo (the wrapper around
5477 // the ARMInsts array) instead. Getting that here requires awkward
5478 // API changes, though. Better way?
5480 extern const MCInstrDesc ARMInsts[];
5482 static const MCInstrDesc &getInstDesc(unsigned Opcode) {
5483 return ARMInsts[Opcode];
5486 // FIXME: We would really like to be able to tablegen'erate this.
5488 validateInstruction(MCInst &Inst,
5489 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5490 const MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
5491 SMLoc Loc = Operands[0]->getStartLoc();
5492 // Check the IT block state first.
5493 // NOTE: BKPT instruction has the interesting property of being
5494 // allowed in IT blocks, but not being predicable. It just always
5496 if (inITBlock() && Inst.getOpcode() != ARM::tBKPT &&
5497 Inst.getOpcode() != ARM::BKPT) {
5499 if (ITState.FirstCond)
5500 ITState.FirstCond = false;
5502 bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
5503 // The instruction must be predicable.
5504 if (!MCID.isPredicable())
5505 return Error(Loc, "instructions in IT block must be predicable");
5506 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
5507 unsigned ITCond = bit ? ITState.Cond :
5508 ARMCC::getOppositeCondition(ITState.Cond);
5509 if (Cond != ITCond) {
5510 // Find the condition code Operand to get its SMLoc information.
5512 for (unsigned i = 1; i < Operands.size(); ++i)
5513 if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
5514 CondLoc = Operands[i]->getStartLoc();
5515 return Error(CondLoc, "incorrect condition in IT block; got '" +
5516 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5517 "', but expected '" +
5518 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5520 // Check for non-'al' condition codes outside of the IT block.
5521 } else if (isThumbTwo() && MCID.isPredicable() &&
5522 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5523 ARMCC::AL && Inst.getOpcode() != ARM::tB &&
5524 Inst.getOpcode() != ARM::t2B)
5525 return Error(Loc, "predicated instructions must be in IT block");
5527 switch (Inst.getOpcode()) {
5530 case ARM::LDRD_POST: {
5531 // Rt2 must be Rt + 1.
5532 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
5533 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5535 return Error(Operands[3]->getStartLoc(),
5536 "destination operands must be sequential");
5540 // Rt2 must be Rt + 1.
5541 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
5542 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5544 return Error(Operands[3]->getStartLoc(),
5545 "source operands must be sequential");
5549 case ARM::STRD_POST: {
5550 // Rt2 must be Rt + 1.
5551 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5552 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(2).getReg());
5554 return Error(Operands[3]->getStartLoc(),
5555 "source operands must be sequential");
5560 // width must be in range [1, 32-lsb]
5561 unsigned lsb = Inst.getOperand(2).getImm();
5562 unsigned widthm1 = Inst.getOperand(3).getImm();
5563 if (widthm1 >= 32 - lsb)
5564 return Error(Operands[5]->getStartLoc(),
5565 "bitfield width must be in range [1,32-lsb]");
5569 // If we're parsing Thumb2, the .w variant is available and handles
5570 // most cases that are normally illegal for a Thumb1 LDM
5571 // instruction. We'll make the transformation in processInstruction()
5574 // Thumb LDM instructions are writeback iff the base register is not
5575 // in the register list.
5576 unsigned Rn = Inst.getOperand(0).getReg();
5577 bool hasWritebackToken =
5578 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
5579 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
5580 bool listContainsBase;
5581 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
5582 return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
5583 "registers must be in range r0-r7");
5584 // If we should have writeback, then there should be a '!' token.
5585 if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
5586 return Error(Operands[2]->getStartLoc(),
5587 "writeback operator '!' expected");
5588 // If we should not have writeback, there must not be a '!'. This is
5589 // true even for the 32-bit wide encodings.
5590 if (listContainsBase && hasWritebackToken)
5591 return Error(Operands[3]->getStartLoc(),
5592 "writeback operator '!' not allowed when base register "
5593 "in register list");
5597 case ARM::t2LDMIA_UPD: {
5598 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5599 return Error(Operands[4]->getStartLoc(),
5600 "writeback operator '!' not allowed when base register "
5601 "in register list");
5605 // The second source operand must be the same register as the destination
5608 // In this case, we must directly check the parsed operands because the
5609 // cvtThumbMultiply() function is written in such a way that it guarantees
5610 // this first statement is always true for the new Inst. Essentially, the
5611 // destination is unconditionally copied into the second source operand
5612 // without checking to see if it matches what we actually parsed.
5613 if (Operands.size() == 6 &&
5614 (((ARMOperand*)Operands[3])->getReg() !=
5615 ((ARMOperand*)Operands[5])->getReg()) &&
5616 (((ARMOperand*)Operands[3])->getReg() !=
5617 ((ARMOperand*)Operands[4])->getReg())) {
5618 return Error(Operands[3]->getStartLoc(),
5619 "destination register must match source register");
5623 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5624 // so only issue a diagnostic for thumb1. The instructions will be
5625 // switched to the t2 encodings in processInstruction() if necessary.
5627 bool listContainsBase;
5628 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
5630 return Error(Operands[2]->getStartLoc(),
5631 "registers must be in range r0-r7 or pc");
5635 bool listContainsBase;
5636 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
5638 return Error(Operands[2]->getStartLoc(),
5639 "registers must be in range r0-r7 or lr");
5642 case ARM::tSTMIA_UPD: {
5643 bool listContainsBase;
5644 if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
5645 return Error(Operands[4]->getStartLoc(),
5646 "registers must be in range r0-r7");
5649 case ARM::tADDrSP: {
5650 // If the non-SP source operand and the destination operand are not the
5651 // same, we need thumb2 (for the wide encoding), or we have an error.
5652 if (!isThumbTwo() &&
5653 Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
5654 return Error(Operands[4]->getStartLoc(),
5655 "source register must be the same as destination");
5664 static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) {
5666 default: llvm_unreachable("unexpected opcode!");
5668 case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
5669 case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
5670 case ARM::VST1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
5671 case ARM::VST1LNdWB_register_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
5672 case ARM::VST1LNdWB_register_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
5673 case ARM::VST1LNdWB_register_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
5674 case ARM::VST1LNdAsm_8: Spacing = 1; return ARM::VST1LNd8;
5675 case ARM::VST1LNdAsm_16: Spacing = 1; return ARM::VST1LNd16;
5676 case ARM::VST1LNdAsm_32: Spacing = 1; return ARM::VST1LNd32;
5679 case ARM::VST2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
5680 case ARM::VST2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
5681 case ARM::VST2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
5682 case ARM::VST2LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
5683 case ARM::VST2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
5685 case ARM::VST2LNdWB_register_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
5686 case ARM::VST2LNdWB_register_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
5687 case ARM::VST2LNdWB_register_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
5688 case ARM::VST2LNqWB_register_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
5689 case ARM::VST2LNqWB_register_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
5691 case ARM::VST2LNdAsm_8: Spacing = 1; return ARM::VST2LNd8;
5692 case ARM::VST2LNdAsm_16: Spacing = 1; return ARM::VST2LNd16;
5693 case ARM::VST2LNdAsm_32: Spacing = 1; return ARM::VST2LNd32;
5694 case ARM::VST2LNqAsm_16: Spacing = 2; return ARM::VST2LNq16;
5695 case ARM::VST2LNqAsm_32: Spacing = 2; return ARM::VST2LNq32;
5698 case ARM::VST3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
5699 case ARM::VST3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
5700 case ARM::VST3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
5701 case ARM::VST3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNq16_UPD;
5702 case ARM::VST3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
5703 case ARM::VST3LNdWB_register_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
5704 case ARM::VST3LNdWB_register_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
5705 case ARM::VST3LNdWB_register_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
5706 case ARM::VST3LNqWB_register_Asm_16: Spacing = 2; return ARM::VST3LNq16_UPD;
5707 case ARM::VST3LNqWB_register_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
5708 case ARM::VST3LNdAsm_8: Spacing = 1; return ARM::VST3LNd8;
5709 case ARM::VST3LNdAsm_16: Spacing = 1; return ARM::VST3LNd16;
5710 case ARM::VST3LNdAsm_32: Spacing = 1; return ARM::VST3LNd32;
5711 case ARM::VST3LNqAsm_16: Spacing = 2; return ARM::VST3LNq16;
5712 case ARM::VST3LNqAsm_32: Spacing = 2; return ARM::VST3LNq32;
5715 case ARM::VST3dWB_fixed_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
5716 case ARM::VST3dWB_fixed_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
5717 case ARM::VST3dWB_fixed_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
5718 case ARM::VST3qWB_fixed_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
5719 case ARM::VST3qWB_fixed_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
5720 case ARM::VST3qWB_fixed_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
5721 case ARM::VST3dWB_register_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
5722 case ARM::VST3dWB_register_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
5723 case ARM::VST3dWB_register_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
5724 case ARM::VST3qWB_register_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
5725 case ARM::VST3qWB_register_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
5726 case ARM::VST3qWB_register_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
5727 case ARM::VST3dAsm_8: Spacing = 1; return ARM::VST3d8;
5728 case ARM::VST3dAsm_16: Spacing = 1; return ARM::VST3d16;
5729 case ARM::VST3dAsm_32: Spacing = 1; return ARM::VST3d32;
5730 case ARM::VST3qAsm_8: Spacing = 2; return ARM::VST3q8;
5731 case ARM::VST3qAsm_16: Spacing = 2; return ARM::VST3q16;
5732 case ARM::VST3qAsm_32: Spacing = 2; return ARM::VST3q32;
5735 case ARM::VST4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
5736 case ARM::VST4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
5737 case ARM::VST4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
5738 case ARM::VST4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNq16_UPD;
5739 case ARM::VST4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
5740 case ARM::VST4LNdWB_register_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
5741 case ARM::VST4LNdWB_register_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
5742 case ARM::VST4LNdWB_register_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
5743 case ARM::VST4LNqWB_register_Asm_16: Spacing = 2; return ARM::VST4LNq16_UPD;
5744 case ARM::VST4LNqWB_register_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
5745 case ARM::VST4LNdAsm_8: Spacing = 1; return ARM::VST4LNd8;
5746 case ARM::VST4LNdAsm_16: Spacing = 1; return ARM::VST4LNd16;
5747 case ARM::VST4LNdAsm_32: Spacing = 1; return ARM::VST4LNd32;
5748 case ARM::VST4LNqAsm_16: Spacing = 2; return ARM::VST4LNq16;
5749 case ARM::VST4LNqAsm_32: Spacing = 2; return ARM::VST4LNq32;
5752 case ARM::VST4dWB_fixed_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
5753 case ARM::VST4dWB_fixed_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
5754 case ARM::VST4dWB_fixed_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
5755 case ARM::VST4qWB_fixed_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
5756 case ARM::VST4qWB_fixed_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
5757 case ARM::VST4qWB_fixed_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
5758 case ARM::VST4dWB_register_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
5759 case ARM::VST4dWB_register_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
5760 case ARM::VST4dWB_register_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
5761 case ARM::VST4qWB_register_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
5762 case ARM::VST4qWB_register_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
5763 case ARM::VST4qWB_register_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
5764 case ARM::VST4dAsm_8: Spacing = 1; return ARM::VST4d8;
5765 case ARM::VST4dAsm_16: Spacing = 1; return ARM::VST4d16;
5766 case ARM::VST4dAsm_32: Spacing = 1; return ARM::VST4d32;
5767 case ARM::VST4qAsm_8: Spacing = 2; return ARM::VST4q8;
5768 case ARM::VST4qAsm_16: Spacing = 2; return ARM::VST4q16;
5769 case ARM::VST4qAsm_32: Spacing = 2; return ARM::VST4q32;
5773 static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
5775 default: llvm_unreachable("unexpected opcode!");
5777 case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
5778 case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
5779 case ARM::VLD1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
5780 case ARM::VLD1LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
5781 case ARM::VLD1LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
5782 case ARM::VLD1LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
5783 case ARM::VLD1LNdAsm_8: Spacing = 1; return ARM::VLD1LNd8;
5784 case ARM::VLD1LNdAsm_16: Spacing = 1; return ARM::VLD1LNd16;
5785 case ARM::VLD1LNdAsm_32: Spacing = 1; return ARM::VLD1LNd32;
5788 case ARM::VLD2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
5789 case ARM::VLD2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
5790 case ARM::VLD2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
5791 case ARM::VLD2LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNq16_UPD;
5792 case ARM::VLD2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
5793 case ARM::VLD2LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
5794 case ARM::VLD2LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
5795 case ARM::VLD2LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
5796 case ARM::VLD2LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD2LNq16_UPD;
5797 case ARM::VLD2LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
5798 case ARM::VLD2LNdAsm_8: Spacing = 1; return ARM::VLD2LNd8;
5799 case ARM::VLD2LNdAsm_16: Spacing = 1; return ARM::VLD2LNd16;
5800 case ARM::VLD2LNdAsm_32: Spacing = 1; return ARM::VLD2LNd32;
5801 case ARM::VLD2LNqAsm_16: Spacing = 2; return ARM::VLD2LNq16;
5802 case ARM::VLD2LNqAsm_32: Spacing = 2; return ARM::VLD2LNq32;
5805 case ARM::VLD3DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
5806 case ARM::VLD3DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
5807 case ARM::VLD3DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
5808 case ARM::VLD3DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPq8_UPD;
5809 case ARM::VLD3DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPq16_UPD;
5810 case ARM::VLD3DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
5811 case ARM::VLD3DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
5812 case ARM::VLD3DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
5813 case ARM::VLD3DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
5814 case ARM::VLD3DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD3DUPq8_UPD;
5815 case ARM::VLD3DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
5816 case ARM::VLD3DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
5817 case ARM::VLD3DUPdAsm_8: Spacing = 1; return ARM::VLD3DUPd8;
5818 case ARM::VLD3DUPdAsm_16: Spacing = 1; return ARM::VLD3DUPd16;
5819 case ARM::VLD3DUPdAsm_32: Spacing = 1; return ARM::VLD3DUPd32;
5820 case ARM::VLD3DUPqAsm_8: Spacing = 2; return ARM::VLD3DUPq8;
5821 case ARM::VLD3DUPqAsm_16: Spacing = 2; return ARM::VLD3DUPq16;
5822 case ARM::VLD3DUPqAsm_32: Spacing = 2; return ARM::VLD3DUPq32;
5825 case ARM::VLD3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
5826 case ARM::VLD3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
5827 case ARM::VLD3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
5828 case ARM::VLD3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNq16_UPD;
5829 case ARM::VLD3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
5830 case ARM::VLD3LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
5831 case ARM::VLD3LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
5832 case ARM::VLD3LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
5833 case ARM::VLD3LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD3LNq16_UPD;
5834 case ARM::VLD3LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
5835 case ARM::VLD3LNdAsm_8: Spacing = 1; return ARM::VLD3LNd8;
5836 case ARM::VLD3LNdAsm_16: Spacing = 1; return ARM::VLD3LNd16;
5837 case ARM::VLD3LNdAsm_32: Spacing = 1; return ARM::VLD3LNd32;
5838 case ARM::VLD3LNqAsm_16: Spacing = 2; return ARM::VLD3LNq16;
5839 case ARM::VLD3LNqAsm_32: Spacing = 2; return ARM::VLD3LNq32;
5842 case ARM::VLD3dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
5843 case ARM::VLD3dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
5844 case ARM::VLD3dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
5845 case ARM::VLD3qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
5846 case ARM::VLD3qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
5847 case ARM::VLD3qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
5848 case ARM::VLD3dWB_register_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
5849 case ARM::VLD3dWB_register_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
5850 case ARM::VLD3dWB_register_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
5851 case ARM::VLD3qWB_register_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
5852 case ARM::VLD3qWB_register_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
5853 case ARM::VLD3qWB_register_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
5854 case ARM::VLD3dAsm_8: Spacing = 1; return ARM::VLD3d8;
5855 case ARM::VLD3dAsm_16: Spacing = 1; return ARM::VLD3d16;
5856 case ARM::VLD3dAsm_32: Spacing = 1; return ARM::VLD3d32;
5857 case ARM::VLD3qAsm_8: Spacing = 2; return ARM::VLD3q8;
5858 case ARM::VLD3qAsm_16: Spacing = 2; return ARM::VLD3q16;
5859 case ARM::VLD3qAsm_32: Spacing = 2; return ARM::VLD3q32;
5862 case ARM::VLD4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
5863 case ARM::VLD4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
5864 case ARM::VLD4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
5865 case ARM::VLD4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNq16_UPD;
5866 case ARM::VLD4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
5867 case ARM::VLD4LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
5868 case ARM::VLD4LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
5869 case ARM::VLD4LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
5870 case ARM::VLD4LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
5871 case ARM::VLD4LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
5872 case ARM::VLD4LNdAsm_8: Spacing = 1; return ARM::VLD4LNd8;
5873 case ARM::VLD4LNdAsm_16: Spacing = 1; return ARM::VLD4LNd16;
5874 case ARM::VLD4LNdAsm_32: Spacing = 1; return ARM::VLD4LNd32;
5875 case ARM::VLD4LNqAsm_16: Spacing = 2; return ARM::VLD4LNq16;
5876 case ARM::VLD4LNqAsm_32: Spacing = 2; return ARM::VLD4LNq32;
5879 case ARM::VLD4DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
5880 case ARM::VLD4DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
5881 case ARM::VLD4DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
5882 case ARM::VLD4DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPq8_UPD;
5883 case ARM::VLD4DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPq16_UPD;
5884 case ARM::VLD4DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
5885 case ARM::VLD4DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
5886 case ARM::VLD4DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
5887 case ARM::VLD4DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
5888 case ARM::VLD4DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD4DUPq8_UPD;
5889 case ARM::VLD4DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD4DUPq16_UPD;
5890 case ARM::VLD4DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
5891 case ARM::VLD4DUPdAsm_8: Spacing = 1; return ARM::VLD4DUPd8;
5892 case ARM::VLD4DUPdAsm_16: Spacing = 1; return ARM::VLD4DUPd16;
5893 case ARM::VLD4DUPdAsm_32: Spacing = 1; return ARM::VLD4DUPd32;
5894 case ARM::VLD4DUPqAsm_8: Spacing = 2; return ARM::VLD4DUPq8;
5895 case ARM::VLD4DUPqAsm_16: Spacing = 2; return ARM::VLD4DUPq16;
5896 case ARM::VLD4DUPqAsm_32: Spacing = 2; return ARM::VLD4DUPq32;
5899 case ARM::VLD4dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
5900 case ARM::VLD4dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
5901 case ARM::VLD4dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
5902 case ARM::VLD4qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
5903 case ARM::VLD4qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
5904 case ARM::VLD4qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
5905 case ARM::VLD4dWB_register_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
5906 case ARM::VLD4dWB_register_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
5907 case ARM::VLD4dWB_register_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
5908 case ARM::VLD4qWB_register_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
5909 case ARM::VLD4qWB_register_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
5910 case ARM::VLD4qWB_register_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
5911 case ARM::VLD4dAsm_8: Spacing = 1; return ARM::VLD4d8;
5912 case ARM::VLD4dAsm_16: Spacing = 1; return ARM::VLD4d16;
5913 case ARM::VLD4dAsm_32: Spacing = 1; return ARM::VLD4d32;
5914 case ARM::VLD4qAsm_8: Spacing = 2; return ARM::VLD4q8;
5915 case ARM::VLD4qAsm_16: Spacing = 2; return ARM::VLD4q16;
5916 case ARM::VLD4qAsm_32: Spacing = 2; return ARM::VLD4q32;
5921 processInstruction(MCInst &Inst,
5922 const SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
5923 switch (Inst.getOpcode()) {
5924 // Alias for alternate form of 'ADR Rd, #imm' instruction.
5926 if (Inst.getOperand(1).getReg() != ARM::PC ||
5927 Inst.getOperand(5).getReg() != 0)
5930 TmpInst.setOpcode(ARM::ADR);
5931 TmpInst.addOperand(Inst.getOperand(0));
5932 TmpInst.addOperand(Inst.getOperand(2));
5933 TmpInst.addOperand(Inst.getOperand(3));
5934 TmpInst.addOperand(Inst.getOperand(4));
5938 // Aliases for alternate PC+imm syntax of LDR instructions.
5939 case ARM::t2LDRpcrel:
5940 // Select the narrow version if the immediate will fit.
5941 if (Inst.getOperand(1).getImm() > 0 &&
5942 Inst.getOperand(1).getImm() <= 0xff &&
5943 !(static_cast<ARMOperand*>(Operands[2])->isToken() &&
5944 static_cast<ARMOperand*>(Operands[2])->getToken() == ".w"))
5945 Inst.setOpcode(ARM::tLDRpci);
5947 Inst.setOpcode(ARM::t2LDRpci);
5949 case ARM::t2LDRBpcrel:
5950 Inst.setOpcode(ARM::t2LDRBpci);
5952 case ARM::t2LDRHpcrel:
5953 Inst.setOpcode(ARM::t2LDRHpci);
5955 case ARM::t2LDRSBpcrel:
5956 Inst.setOpcode(ARM::t2LDRSBpci);
5958 case ARM::t2LDRSHpcrel:
5959 Inst.setOpcode(ARM::t2LDRSHpci);
5961 // Handle NEON VST complex aliases.
5962 case ARM::VST1LNdWB_register_Asm_8:
5963 case ARM::VST1LNdWB_register_Asm_16:
5964 case ARM::VST1LNdWB_register_Asm_32: {
5966 // Shuffle the operands around so the lane index operand is in the
5969 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
5970 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5971 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5972 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5973 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5974 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5975 TmpInst.addOperand(Inst.getOperand(1)); // lane
5976 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
5977 TmpInst.addOperand(Inst.getOperand(6));
5982 case ARM::VST2LNdWB_register_Asm_8:
5983 case ARM::VST2LNdWB_register_Asm_16:
5984 case ARM::VST2LNdWB_register_Asm_32:
5985 case ARM::VST2LNqWB_register_Asm_16:
5986 case ARM::VST2LNqWB_register_Asm_32: {
5988 // Shuffle the operands around so the lane index operand is in the
5991 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
5992 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
5993 TmpInst.addOperand(Inst.getOperand(2)); // Rn
5994 TmpInst.addOperand(Inst.getOperand(3)); // alignment
5995 TmpInst.addOperand(Inst.getOperand(4)); // Rm
5996 TmpInst.addOperand(Inst.getOperand(0)); // Vd
5997 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
5999 TmpInst.addOperand(Inst.getOperand(1)); // lane
6000 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6001 TmpInst.addOperand(Inst.getOperand(6));
6006 case ARM::VST3LNdWB_register_Asm_8:
6007 case ARM::VST3LNdWB_register_Asm_16:
6008 case ARM::VST3LNdWB_register_Asm_32:
6009 case ARM::VST3LNqWB_register_Asm_16:
6010 case ARM::VST3LNqWB_register_Asm_32: {
6012 // Shuffle the operands around so the lane index operand is in the
6015 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6016 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6017 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6018 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6019 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6020 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6021 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6023 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6025 TmpInst.addOperand(Inst.getOperand(1)); // lane
6026 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6027 TmpInst.addOperand(Inst.getOperand(6));
6032 case ARM::VST4LNdWB_register_Asm_8:
6033 case ARM::VST4LNdWB_register_Asm_16:
6034 case ARM::VST4LNdWB_register_Asm_32:
6035 case ARM::VST4LNqWB_register_Asm_16:
6036 case ARM::VST4LNqWB_register_Asm_32: {
6038 // Shuffle the operands around so the lane index operand is in the
6041 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6042 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6043 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6044 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6045 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6046 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6047 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6049 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6051 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6053 TmpInst.addOperand(Inst.getOperand(1)); // lane
6054 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6055 TmpInst.addOperand(Inst.getOperand(6));
6060 case ARM::VST1LNdWB_fixed_Asm_8:
6061 case ARM::VST1LNdWB_fixed_Asm_16:
6062 case ARM::VST1LNdWB_fixed_Asm_32: {
6064 // Shuffle the operands around so the lane index operand is in the
6067 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6068 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6069 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6070 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6071 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6072 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6073 TmpInst.addOperand(Inst.getOperand(1)); // lane
6074 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6075 TmpInst.addOperand(Inst.getOperand(5));
6080 case ARM::VST2LNdWB_fixed_Asm_8:
6081 case ARM::VST2LNdWB_fixed_Asm_16:
6082 case ARM::VST2LNdWB_fixed_Asm_32:
6083 case ARM::VST2LNqWB_fixed_Asm_16:
6084 case ARM::VST2LNqWB_fixed_Asm_32: {
6086 // Shuffle the operands around so the lane index operand is in the
6089 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6090 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6091 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6092 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6093 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6094 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6095 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6097 TmpInst.addOperand(Inst.getOperand(1)); // lane
6098 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6099 TmpInst.addOperand(Inst.getOperand(5));
6104 case ARM::VST3LNdWB_fixed_Asm_8:
6105 case ARM::VST3LNdWB_fixed_Asm_16:
6106 case ARM::VST3LNdWB_fixed_Asm_32:
6107 case ARM::VST3LNqWB_fixed_Asm_16:
6108 case ARM::VST3LNqWB_fixed_Asm_32: {
6110 // Shuffle the operands around so the lane index operand is in the
6113 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6114 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6115 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6116 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6117 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6118 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6119 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6121 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6123 TmpInst.addOperand(Inst.getOperand(1)); // lane
6124 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6125 TmpInst.addOperand(Inst.getOperand(5));
6130 case ARM::VST4LNdWB_fixed_Asm_8:
6131 case ARM::VST4LNdWB_fixed_Asm_16:
6132 case ARM::VST4LNdWB_fixed_Asm_32:
6133 case ARM::VST4LNqWB_fixed_Asm_16:
6134 case ARM::VST4LNqWB_fixed_Asm_32: {
6136 // Shuffle the operands around so the lane index operand is in the
6139 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6140 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6141 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6142 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6143 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6144 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6145 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6147 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6149 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6151 TmpInst.addOperand(Inst.getOperand(1)); // lane
6152 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6153 TmpInst.addOperand(Inst.getOperand(5));
6158 case ARM::VST1LNdAsm_8:
6159 case ARM::VST1LNdAsm_16:
6160 case ARM::VST1LNdAsm_32: {
6162 // Shuffle the operands around so the lane index operand is in the
6165 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6166 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6167 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6168 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6169 TmpInst.addOperand(Inst.getOperand(1)); // lane
6170 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6171 TmpInst.addOperand(Inst.getOperand(5));
6176 case ARM::VST2LNdAsm_8:
6177 case ARM::VST2LNdAsm_16:
6178 case ARM::VST2LNdAsm_32:
6179 case ARM::VST2LNqAsm_16:
6180 case ARM::VST2LNqAsm_32: {
6182 // Shuffle the operands around so the lane index operand is in the
6185 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6186 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6187 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6188 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6189 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6191 TmpInst.addOperand(Inst.getOperand(1)); // lane
6192 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6193 TmpInst.addOperand(Inst.getOperand(5));
6198 case ARM::VST3LNdAsm_8:
6199 case ARM::VST3LNdAsm_16:
6200 case ARM::VST3LNdAsm_32:
6201 case ARM::VST3LNqAsm_16:
6202 case ARM::VST3LNqAsm_32: {
6204 // Shuffle the operands around so the lane index operand is in the
6207 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6208 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6209 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6210 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6211 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6213 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6215 TmpInst.addOperand(Inst.getOperand(1)); // lane
6216 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6217 TmpInst.addOperand(Inst.getOperand(5));
6222 case ARM::VST4LNdAsm_8:
6223 case ARM::VST4LNdAsm_16:
6224 case ARM::VST4LNdAsm_32:
6225 case ARM::VST4LNqAsm_16:
6226 case ARM::VST4LNqAsm_32: {
6228 // Shuffle the operands around so the lane index operand is in the
6231 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6232 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6233 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6234 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6235 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6237 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6239 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6241 TmpInst.addOperand(Inst.getOperand(1)); // lane
6242 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6243 TmpInst.addOperand(Inst.getOperand(5));
6248 // Handle NEON VLD complex aliases.
6249 case ARM::VLD1LNdWB_register_Asm_8:
6250 case ARM::VLD1LNdWB_register_Asm_16:
6251 case ARM::VLD1LNdWB_register_Asm_32: {
6253 // Shuffle the operands around so the lane index operand is in the
6256 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6257 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6258 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6259 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6260 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6261 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6262 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6263 TmpInst.addOperand(Inst.getOperand(1)); // lane
6264 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6265 TmpInst.addOperand(Inst.getOperand(6));
6270 case ARM::VLD2LNdWB_register_Asm_8:
6271 case ARM::VLD2LNdWB_register_Asm_16:
6272 case ARM::VLD2LNdWB_register_Asm_32:
6273 case ARM::VLD2LNqWB_register_Asm_16:
6274 case ARM::VLD2LNqWB_register_Asm_32: {
6276 // Shuffle the operands around so the lane index operand is in the
6279 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6280 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6281 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6283 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6284 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6285 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6286 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6287 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6288 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6290 TmpInst.addOperand(Inst.getOperand(1)); // lane
6291 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6292 TmpInst.addOperand(Inst.getOperand(6));
6297 case ARM::VLD3LNdWB_register_Asm_8:
6298 case ARM::VLD3LNdWB_register_Asm_16:
6299 case ARM::VLD3LNdWB_register_Asm_32:
6300 case ARM::VLD3LNqWB_register_Asm_16:
6301 case ARM::VLD3LNqWB_register_Asm_32: {
6303 // Shuffle the operands around so the lane index operand is in the
6306 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6307 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6308 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6310 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6312 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6313 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6314 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6315 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6316 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6317 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6319 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6321 TmpInst.addOperand(Inst.getOperand(1)); // lane
6322 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6323 TmpInst.addOperand(Inst.getOperand(6));
6328 case ARM::VLD4LNdWB_register_Asm_8:
6329 case ARM::VLD4LNdWB_register_Asm_16:
6330 case ARM::VLD4LNdWB_register_Asm_32:
6331 case ARM::VLD4LNqWB_register_Asm_16:
6332 case ARM::VLD4LNqWB_register_Asm_32: {
6334 // Shuffle the operands around so the lane index operand is in the
6337 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6338 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6339 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6341 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6343 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6345 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6346 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6347 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6348 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6349 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6350 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6352 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6354 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6356 TmpInst.addOperand(Inst.getOperand(1)); // lane
6357 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6358 TmpInst.addOperand(Inst.getOperand(6));
6363 case ARM::VLD1LNdWB_fixed_Asm_8:
6364 case ARM::VLD1LNdWB_fixed_Asm_16:
6365 case ARM::VLD1LNdWB_fixed_Asm_32: {
6367 // Shuffle the operands around so the lane index operand is in the
6370 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6371 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6372 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6373 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6374 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6375 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6376 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6377 TmpInst.addOperand(Inst.getOperand(1)); // lane
6378 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6379 TmpInst.addOperand(Inst.getOperand(5));
6384 case ARM::VLD2LNdWB_fixed_Asm_8:
6385 case ARM::VLD2LNdWB_fixed_Asm_16:
6386 case ARM::VLD2LNdWB_fixed_Asm_32:
6387 case ARM::VLD2LNqWB_fixed_Asm_16:
6388 case ARM::VLD2LNqWB_fixed_Asm_32: {
6390 // Shuffle the operands around so the lane index operand is in the
6393 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6394 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6395 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6397 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6398 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6399 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6400 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6401 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6402 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6404 TmpInst.addOperand(Inst.getOperand(1)); // lane
6405 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6406 TmpInst.addOperand(Inst.getOperand(5));
6411 case ARM::VLD3LNdWB_fixed_Asm_8:
6412 case ARM::VLD3LNdWB_fixed_Asm_16:
6413 case ARM::VLD3LNdWB_fixed_Asm_32:
6414 case ARM::VLD3LNqWB_fixed_Asm_16:
6415 case ARM::VLD3LNqWB_fixed_Asm_32: {
6417 // Shuffle the operands around so the lane index operand is in the
6420 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6421 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6422 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6424 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6426 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6427 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6428 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6429 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6430 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6431 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6433 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6435 TmpInst.addOperand(Inst.getOperand(1)); // lane
6436 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6437 TmpInst.addOperand(Inst.getOperand(5));
6442 case ARM::VLD4LNdWB_fixed_Asm_8:
6443 case ARM::VLD4LNdWB_fixed_Asm_16:
6444 case ARM::VLD4LNdWB_fixed_Asm_32:
6445 case ARM::VLD4LNqWB_fixed_Asm_16:
6446 case ARM::VLD4LNqWB_fixed_Asm_32: {
6448 // Shuffle the operands around so the lane index operand is in the
6451 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6452 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6453 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6455 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6457 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6459 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6460 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6461 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6462 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6463 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6464 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6466 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6468 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6470 TmpInst.addOperand(Inst.getOperand(1)); // lane
6471 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6472 TmpInst.addOperand(Inst.getOperand(5));
6477 case ARM::VLD1LNdAsm_8:
6478 case ARM::VLD1LNdAsm_16:
6479 case ARM::VLD1LNdAsm_32: {
6481 // Shuffle the operands around so the lane index operand is in the
6484 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6485 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6486 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6487 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6488 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6489 TmpInst.addOperand(Inst.getOperand(1)); // lane
6490 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6491 TmpInst.addOperand(Inst.getOperand(5));
6496 case ARM::VLD2LNdAsm_8:
6497 case ARM::VLD2LNdAsm_16:
6498 case ARM::VLD2LNdAsm_32:
6499 case ARM::VLD2LNqAsm_16:
6500 case ARM::VLD2LNqAsm_32: {
6502 // Shuffle the operands around so the lane index operand is in the
6505 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6506 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6507 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6509 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6510 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6511 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6512 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6514 TmpInst.addOperand(Inst.getOperand(1)); // lane
6515 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6516 TmpInst.addOperand(Inst.getOperand(5));
6521 case ARM::VLD3LNdAsm_8:
6522 case ARM::VLD3LNdAsm_16:
6523 case ARM::VLD3LNdAsm_32:
6524 case ARM::VLD3LNqAsm_16:
6525 case ARM::VLD3LNqAsm_32: {
6527 // Shuffle the operands around so the lane index operand is in the
6530 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6531 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6532 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6534 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6536 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6537 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6538 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6539 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6541 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6543 TmpInst.addOperand(Inst.getOperand(1)); // lane
6544 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6545 TmpInst.addOperand(Inst.getOperand(5));
6550 case ARM::VLD4LNdAsm_8:
6551 case ARM::VLD4LNdAsm_16:
6552 case ARM::VLD4LNdAsm_32:
6553 case ARM::VLD4LNqAsm_16:
6554 case ARM::VLD4LNqAsm_32: {
6556 // Shuffle the operands around so the lane index operand is in the
6559 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6560 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6561 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6563 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6565 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6567 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6568 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6569 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6570 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6572 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6574 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6576 TmpInst.addOperand(Inst.getOperand(1)); // lane
6577 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6578 TmpInst.addOperand(Inst.getOperand(5));
6583 // VLD3DUP single 3-element structure to all lanes instructions.
6584 case ARM::VLD3DUPdAsm_8:
6585 case ARM::VLD3DUPdAsm_16:
6586 case ARM::VLD3DUPdAsm_32:
6587 case ARM::VLD3DUPqAsm_8:
6588 case ARM::VLD3DUPqAsm_16:
6589 case ARM::VLD3DUPqAsm_32: {
6592 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6593 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6594 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6596 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6598 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6599 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6600 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6601 TmpInst.addOperand(Inst.getOperand(4));
6606 case ARM::VLD3DUPdWB_fixed_Asm_8:
6607 case ARM::VLD3DUPdWB_fixed_Asm_16:
6608 case ARM::VLD3DUPdWB_fixed_Asm_32:
6609 case ARM::VLD3DUPqWB_fixed_Asm_8:
6610 case ARM::VLD3DUPqWB_fixed_Asm_16:
6611 case ARM::VLD3DUPqWB_fixed_Asm_32: {
6614 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6615 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6616 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6618 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6620 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6621 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6622 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6623 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6624 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6625 TmpInst.addOperand(Inst.getOperand(4));
6630 case ARM::VLD3DUPdWB_register_Asm_8:
6631 case ARM::VLD3DUPdWB_register_Asm_16:
6632 case ARM::VLD3DUPdWB_register_Asm_32:
6633 case ARM::VLD3DUPqWB_register_Asm_8:
6634 case ARM::VLD3DUPqWB_register_Asm_16:
6635 case ARM::VLD3DUPqWB_register_Asm_32: {
6638 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6639 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6640 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6642 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6644 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6645 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6646 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6647 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6648 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6649 TmpInst.addOperand(Inst.getOperand(5));
6654 // VLD3 multiple 3-element structure instructions.
6655 case ARM::VLD3dAsm_8:
6656 case ARM::VLD3dAsm_16:
6657 case ARM::VLD3dAsm_32:
6658 case ARM::VLD3qAsm_8:
6659 case ARM::VLD3qAsm_16:
6660 case ARM::VLD3qAsm_32: {
6663 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6664 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6665 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6667 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6669 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6670 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6671 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6672 TmpInst.addOperand(Inst.getOperand(4));
6677 case ARM::VLD3dWB_fixed_Asm_8:
6678 case ARM::VLD3dWB_fixed_Asm_16:
6679 case ARM::VLD3dWB_fixed_Asm_32:
6680 case ARM::VLD3qWB_fixed_Asm_8:
6681 case ARM::VLD3qWB_fixed_Asm_16:
6682 case ARM::VLD3qWB_fixed_Asm_32: {
6685 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6686 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6687 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6689 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6691 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6692 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6693 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6694 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6695 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6696 TmpInst.addOperand(Inst.getOperand(4));
6701 case ARM::VLD3dWB_register_Asm_8:
6702 case ARM::VLD3dWB_register_Asm_16:
6703 case ARM::VLD3dWB_register_Asm_32:
6704 case ARM::VLD3qWB_register_Asm_8:
6705 case ARM::VLD3qWB_register_Asm_16:
6706 case ARM::VLD3qWB_register_Asm_32: {
6709 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6710 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6711 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6713 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6715 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6716 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6717 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6718 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6719 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6720 TmpInst.addOperand(Inst.getOperand(5));
6725 // VLD4DUP single 3-element structure to all lanes instructions.
6726 case ARM::VLD4DUPdAsm_8:
6727 case ARM::VLD4DUPdAsm_16:
6728 case ARM::VLD4DUPdAsm_32:
6729 case ARM::VLD4DUPqAsm_8:
6730 case ARM::VLD4DUPqAsm_16:
6731 case ARM::VLD4DUPqAsm_32: {
6734 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6735 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6736 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6738 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6740 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6742 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6743 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6744 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6745 TmpInst.addOperand(Inst.getOperand(4));
6750 case ARM::VLD4DUPdWB_fixed_Asm_8:
6751 case ARM::VLD4DUPdWB_fixed_Asm_16:
6752 case ARM::VLD4DUPdWB_fixed_Asm_32:
6753 case ARM::VLD4DUPqWB_fixed_Asm_8:
6754 case ARM::VLD4DUPqWB_fixed_Asm_16:
6755 case ARM::VLD4DUPqWB_fixed_Asm_32: {
6758 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6759 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6760 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6762 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6764 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6766 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6767 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6768 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6769 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6770 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6771 TmpInst.addOperand(Inst.getOperand(4));
6776 case ARM::VLD4DUPdWB_register_Asm_8:
6777 case ARM::VLD4DUPdWB_register_Asm_16:
6778 case ARM::VLD4DUPdWB_register_Asm_32:
6779 case ARM::VLD4DUPqWB_register_Asm_8:
6780 case ARM::VLD4DUPqWB_register_Asm_16:
6781 case ARM::VLD4DUPqWB_register_Asm_32: {
6784 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6785 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6786 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6788 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6790 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6792 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6793 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6794 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6795 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6796 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6797 TmpInst.addOperand(Inst.getOperand(5));
6802 // VLD4 multiple 4-element structure instructions.
6803 case ARM::VLD4dAsm_8:
6804 case ARM::VLD4dAsm_16:
6805 case ARM::VLD4dAsm_32:
6806 case ARM::VLD4qAsm_8:
6807 case ARM::VLD4qAsm_16:
6808 case ARM::VLD4qAsm_32: {
6811 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6812 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6813 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6815 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6817 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6819 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6820 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6821 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6822 TmpInst.addOperand(Inst.getOperand(4));
6827 case ARM::VLD4dWB_fixed_Asm_8:
6828 case ARM::VLD4dWB_fixed_Asm_16:
6829 case ARM::VLD4dWB_fixed_Asm_32:
6830 case ARM::VLD4qWB_fixed_Asm_8:
6831 case ARM::VLD4qWB_fixed_Asm_16:
6832 case ARM::VLD4qWB_fixed_Asm_32: {
6835 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6836 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6837 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6839 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6841 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6843 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6844 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6845 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6846 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6847 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6848 TmpInst.addOperand(Inst.getOperand(4));
6853 case ARM::VLD4dWB_register_Asm_8:
6854 case ARM::VLD4dWB_register_Asm_16:
6855 case ARM::VLD4dWB_register_Asm_32:
6856 case ARM::VLD4qWB_register_Asm_8:
6857 case ARM::VLD4qWB_register_Asm_16:
6858 case ARM::VLD4qWB_register_Asm_32: {
6861 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6862 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6863 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6865 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6867 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6869 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6870 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6871 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6872 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6873 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6874 TmpInst.addOperand(Inst.getOperand(5));
6879 // VST3 multiple 3-element structure instructions.
6880 case ARM::VST3dAsm_8:
6881 case ARM::VST3dAsm_16:
6882 case ARM::VST3dAsm_32:
6883 case ARM::VST3qAsm_8:
6884 case ARM::VST3qAsm_16:
6885 case ARM::VST3qAsm_32: {
6888 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6889 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6890 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6891 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6892 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6894 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6896 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6897 TmpInst.addOperand(Inst.getOperand(4));
6902 case ARM::VST3dWB_fixed_Asm_8:
6903 case ARM::VST3dWB_fixed_Asm_16:
6904 case ARM::VST3dWB_fixed_Asm_32:
6905 case ARM::VST3qWB_fixed_Asm_8:
6906 case ARM::VST3qWB_fixed_Asm_16:
6907 case ARM::VST3qWB_fixed_Asm_32: {
6910 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6911 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6912 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6913 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6914 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6915 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6916 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6918 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6920 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6921 TmpInst.addOperand(Inst.getOperand(4));
6926 case ARM::VST3dWB_register_Asm_8:
6927 case ARM::VST3dWB_register_Asm_16:
6928 case ARM::VST3dWB_register_Asm_32:
6929 case ARM::VST3qWB_register_Asm_8:
6930 case ARM::VST3qWB_register_Asm_16:
6931 case ARM::VST3qWB_register_Asm_32: {
6934 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6935 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6936 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6937 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6938 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6939 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6940 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6942 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6944 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6945 TmpInst.addOperand(Inst.getOperand(5));
6950 // VST4 multiple 3-element structure instructions.
6951 case ARM::VST4dAsm_8:
6952 case ARM::VST4dAsm_16:
6953 case ARM::VST4dAsm_32:
6954 case ARM::VST4qAsm_8:
6955 case ARM::VST4qAsm_16:
6956 case ARM::VST4qAsm_32: {
6959 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6960 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6961 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6962 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6963 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6965 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6967 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6969 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6970 TmpInst.addOperand(Inst.getOperand(4));
6975 case ARM::VST4dWB_fixed_Asm_8:
6976 case ARM::VST4dWB_fixed_Asm_16:
6977 case ARM::VST4dWB_fixed_Asm_32:
6978 case ARM::VST4qWB_fixed_Asm_8:
6979 case ARM::VST4qWB_fixed_Asm_16:
6980 case ARM::VST4qWB_fixed_Asm_32: {
6983 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6984 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6985 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6986 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6987 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6988 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6989 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6991 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6993 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6995 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6996 TmpInst.addOperand(Inst.getOperand(4));
7001 case ARM::VST4dWB_register_Asm_8:
7002 case ARM::VST4dWB_register_Asm_16:
7003 case ARM::VST4dWB_register_Asm_32:
7004 case ARM::VST4qWB_register_Asm_8:
7005 case ARM::VST4qWB_register_Asm_16:
7006 case ARM::VST4qWB_register_Asm_32: {
7009 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7010 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7011 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7012 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7013 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7014 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7015 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7017 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7019 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7021 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7022 TmpInst.addOperand(Inst.getOperand(5));
7027 // Handle encoding choice for the shift-immediate instructions.
7030 case ARM::t2ASRri: {
7031 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7032 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7033 Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) &&
7034 !(static_cast<ARMOperand*>(Operands[3])->isToken() &&
7035 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w")) {
7037 switch (Inst.getOpcode()) {
7038 default: llvm_unreachable("unexpected opcode");
7039 case ARM::t2LSLri: NewOpc = ARM::tLSLri; break;
7040 case ARM::t2LSRri: NewOpc = ARM::tLSRri; break;
7041 case ARM::t2ASRri: NewOpc = ARM::tASRri; break;
7043 // The Thumb1 operands aren't in the same order. Awesome, eh?
7045 TmpInst.setOpcode(NewOpc);
7046 TmpInst.addOperand(Inst.getOperand(0));
7047 TmpInst.addOperand(Inst.getOperand(5));
7048 TmpInst.addOperand(Inst.getOperand(1));
7049 TmpInst.addOperand(Inst.getOperand(2));
7050 TmpInst.addOperand(Inst.getOperand(3));
7051 TmpInst.addOperand(Inst.getOperand(4));
7058 // Handle the Thumb2 mode MOV complex aliases.
7060 case ARM::t2MOVSsr: {
7061 // Which instruction to expand to depends on the CCOut operand and
7062 // whether we're in an IT block if the register operands are low
7064 bool isNarrow = false;
7065 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7066 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7067 isARMLowRegister(Inst.getOperand(2).getReg()) &&
7068 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7069 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
7073 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
7074 default: llvm_unreachable("unexpected opcode!");
7075 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
7076 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
7077 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
7078 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
7080 TmpInst.setOpcode(newOpc);
7081 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7083 TmpInst.addOperand(MCOperand::CreateReg(
7084 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
7085 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7086 TmpInst.addOperand(Inst.getOperand(2)); // Rm
7087 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7088 TmpInst.addOperand(Inst.getOperand(5));
7090 TmpInst.addOperand(MCOperand::CreateReg(
7091 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
7096 case ARM::t2MOVSsi: {
7097 // Which instruction to expand to depends on the CCOut operand and
7098 // whether we're in an IT block if the register operands are low
7100 bool isNarrow = false;
7101 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7102 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7103 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
7107 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
7108 default: llvm_unreachable("unexpected opcode!");
7109 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
7110 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
7111 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
7112 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
7113 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
7115 unsigned Amount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
7116 if (Amount == 32) Amount = 0;
7117 TmpInst.setOpcode(newOpc);
7118 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7120 TmpInst.addOperand(MCOperand::CreateReg(
7121 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
7122 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7123 if (newOpc != ARM::t2RRX)
7124 TmpInst.addOperand(MCOperand::CreateImm(Amount));
7125 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7126 TmpInst.addOperand(Inst.getOperand(4));
7128 TmpInst.addOperand(MCOperand::CreateReg(
7129 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
7133 // Handle the ARM mode MOV complex aliases.
7138 ARM_AM::ShiftOpc ShiftTy;
7139 switch(Inst.getOpcode()) {
7140 default: llvm_unreachable("unexpected opcode!");
7141 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
7142 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
7143 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
7144 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
7146 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
7148 TmpInst.setOpcode(ARM::MOVsr);
7149 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7150 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7151 TmpInst.addOperand(Inst.getOperand(2)); // Rm
7152 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7153 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7154 TmpInst.addOperand(Inst.getOperand(4));
7155 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
7163 ARM_AM::ShiftOpc ShiftTy;
7164 switch(Inst.getOpcode()) {
7165 default: llvm_unreachable("unexpected opcode!");
7166 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
7167 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
7168 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
7169 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
7171 // A shift by zero is a plain MOVr, not a MOVsi.
7172 unsigned Amt = Inst.getOperand(2).getImm();
7173 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
7174 // A shift by 32 should be encoded as 0 when permitted
7175 if (Amt == 32 && (ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr))
7177 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
7179 TmpInst.setOpcode(Opc);
7180 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7181 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7182 if (Opc == ARM::MOVsi)
7183 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7184 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7185 TmpInst.addOperand(Inst.getOperand(4));
7186 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
7191 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
7193 TmpInst.setOpcode(ARM::MOVsi);
7194 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7195 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7196 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7197 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7198 TmpInst.addOperand(Inst.getOperand(3));
7199 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
7203 case ARM::t2LDMIA_UPD: {
7204 // If this is a load of a single register, then we should use
7205 // a post-indexed LDR instruction instead, per the ARM ARM.
7206 if (Inst.getNumOperands() != 5)
7209 TmpInst.setOpcode(ARM::t2LDR_POST);
7210 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7211 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7212 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7213 TmpInst.addOperand(MCOperand::CreateImm(4));
7214 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7215 TmpInst.addOperand(Inst.getOperand(3));
7219 case ARM::t2STMDB_UPD: {
7220 // If this is a store of a single register, then we should use
7221 // a pre-indexed STR instruction instead, per the ARM ARM.
7222 if (Inst.getNumOperands() != 5)
7225 TmpInst.setOpcode(ARM::t2STR_PRE);
7226 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7227 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7228 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7229 TmpInst.addOperand(MCOperand::CreateImm(-4));
7230 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7231 TmpInst.addOperand(Inst.getOperand(3));
7235 case ARM::LDMIA_UPD:
7236 // If this is a load of a single register via a 'pop', then we should use
7237 // a post-indexed LDR instruction instead, per the ARM ARM.
7238 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "pop" &&
7239 Inst.getNumOperands() == 5) {
7241 TmpInst.setOpcode(ARM::LDR_POST_IMM);
7242 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7243 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7244 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7245 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
7246 TmpInst.addOperand(MCOperand::CreateImm(4));
7247 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7248 TmpInst.addOperand(Inst.getOperand(3));
7253 case ARM::STMDB_UPD:
7254 // If this is a store of a single register via a 'push', then we should use
7255 // a pre-indexed STR instruction instead, per the ARM ARM.
7256 if (static_cast<ARMOperand*>(Operands[0])->getToken() == "push" &&
7257 Inst.getNumOperands() == 5) {
7259 TmpInst.setOpcode(ARM::STR_PRE_IMM);
7260 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7261 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7262 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
7263 TmpInst.addOperand(MCOperand::CreateImm(-4));
7264 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7265 TmpInst.addOperand(Inst.getOperand(3));
7269 case ARM::t2ADDri12:
7270 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
7271 // mnemonic was used (not "addw"), encoding T3 is preferred.
7272 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "add" ||
7273 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
7275 Inst.setOpcode(ARM::t2ADDri);
7276 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7278 case ARM::t2SUBri12:
7279 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
7280 // mnemonic was used (not "subw"), encoding T3 is preferred.
7281 if (static_cast<ARMOperand*>(Operands[0])->getToken() != "sub" ||
7282 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
7284 Inst.setOpcode(ARM::t2SUBri);
7285 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7288 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
7289 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
7290 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
7291 // to encoding T1 if <Rd> is omitted."
7292 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
7293 Inst.setOpcode(ARM::tADDi3);
7298 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
7299 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
7300 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
7301 // to encoding T1 if <Rd> is omitted."
7302 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
7303 Inst.setOpcode(ARM::tSUBi3);
7308 case ARM::t2SUBri: {
7309 // If the destination and first source operand are the same, and
7310 // the flags are compatible with the current IT status, use encoding T2
7311 // instead of T3. For compatibility with the system 'as'. Make sure the
7312 // wide encoding wasn't explicit.
7313 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
7314 !isARMLowRegister(Inst.getOperand(0).getReg()) ||
7315 (unsigned)Inst.getOperand(2).getImm() > 255 ||
7316 ((!inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR) ||
7317 (inITBlock() && Inst.getOperand(5).getReg() != 0)) ||
7318 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
7319 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
7322 TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ?
7323 ARM::tADDi8 : ARM::tSUBi8);
7324 TmpInst.addOperand(Inst.getOperand(0));
7325 TmpInst.addOperand(Inst.getOperand(5));
7326 TmpInst.addOperand(Inst.getOperand(0));
7327 TmpInst.addOperand(Inst.getOperand(2));
7328 TmpInst.addOperand(Inst.getOperand(3));
7329 TmpInst.addOperand(Inst.getOperand(4));
7333 case ARM::t2ADDrr: {
7334 // If the destination and first source operand are the same, and
7335 // there's no setting of the flags, use encoding T2 instead of T3.
7336 // Note that this is only for ADD, not SUB. This mirrors the system
7337 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
7338 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
7339 Inst.getOperand(5).getReg() != 0 ||
7340 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
7341 static_cast<ARMOperand*>(Operands[3])->getToken() == ".w"))
7344 TmpInst.setOpcode(ARM::tADDhirr);
7345 TmpInst.addOperand(Inst.getOperand(0));
7346 TmpInst.addOperand(Inst.getOperand(0));
7347 TmpInst.addOperand(Inst.getOperand(2));
7348 TmpInst.addOperand(Inst.getOperand(3));
7349 TmpInst.addOperand(Inst.getOperand(4));
7353 case ARM::tADDrSP: {
7354 // If the non-SP source operand and the destination operand are not the
7355 // same, we need to use the 32-bit encoding if it's available.
7356 if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
7357 Inst.setOpcode(ARM::t2ADDrr);
7358 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7364 // A Thumb conditional branch outside of an IT block is a tBcc.
7365 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
7366 Inst.setOpcode(ARM::tBcc);
7371 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
7372 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
7373 Inst.setOpcode(ARM::t2Bcc);
7378 // If the conditional is AL or we're in an IT block, we really want t2B.
7379 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
7380 Inst.setOpcode(ARM::t2B);
7385 // If the conditional is AL, we really want tB.
7386 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
7387 Inst.setOpcode(ARM::tB);
7392 // If the register list contains any high registers, or if the writeback
7393 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
7394 // instead if we're in Thumb2. Otherwise, this should have generated
7395 // an error in validateInstruction().
7396 unsigned Rn = Inst.getOperand(0).getReg();
7397 bool hasWritebackToken =
7398 (static_cast<ARMOperand*>(Operands[3])->isToken() &&
7399 static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
7400 bool listContainsBase;
7401 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
7402 (!listContainsBase && !hasWritebackToken) ||
7403 (listContainsBase && hasWritebackToken)) {
7404 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
7405 assert (isThumbTwo());
7406 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
7407 // If we're switching to the updating version, we need to insert
7408 // the writeback tied operand.
7409 if (hasWritebackToken)
7410 Inst.insert(Inst.begin(),
7411 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
7416 case ARM::tSTMIA_UPD: {
7417 // If the register list contains any high registers, we need to use
7418 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
7419 // should have generated an error in validateInstruction().
7420 unsigned Rn = Inst.getOperand(0).getReg();
7421 bool listContainsBase;
7422 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
7423 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
7424 assert (isThumbTwo());
7425 Inst.setOpcode(ARM::t2STMIA_UPD);
7431 bool listContainsBase;
7432 // If the register list contains any high registers, we need to use
7433 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
7434 // should have generated an error in validateInstruction().
7435 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
7437 assert (isThumbTwo());
7438 Inst.setOpcode(ARM::t2LDMIA_UPD);
7439 // Add the base register and writeback operands.
7440 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7441 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7445 bool listContainsBase;
7446 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
7448 assert (isThumbTwo());
7449 Inst.setOpcode(ARM::t2STMDB_UPD);
7450 // Add the base register and writeback operands.
7451 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7452 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7456 // If we can use the 16-bit encoding and the user didn't explicitly
7457 // request the 32-bit variant, transform it here.
7458 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7459 (unsigned)Inst.getOperand(1).getImm() <= 255 &&
7460 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
7461 Inst.getOperand(4).getReg() == ARM::CPSR) ||
7462 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
7463 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
7464 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
7465 // The operands aren't in the same order for tMOVi8...
7467 TmpInst.setOpcode(ARM::tMOVi8);
7468 TmpInst.addOperand(Inst.getOperand(0));
7469 TmpInst.addOperand(Inst.getOperand(4));
7470 TmpInst.addOperand(Inst.getOperand(1));
7471 TmpInst.addOperand(Inst.getOperand(2));
7472 TmpInst.addOperand(Inst.getOperand(3));
7479 // If we can use the 16-bit encoding and the user didn't explicitly
7480 // request the 32-bit variant, transform it here.
7481 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7482 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7483 Inst.getOperand(2).getImm() == ARMCC::AL &&
7484 Inst.getOperand(4).getReg() == ARM::CPSR &&
7485 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
7486 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
7487 // The operands aren't the same for tMOV[S]r... (no cc_out)
7489 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
7490 TmpInst.addOperand(Inst.getOperand(0));
7491 TmpInst.addOperand(Inst.getOperand(1));
7492 TmpInst.addOperand(Inst.getOperand(2));
7493 TmpInst.addOperand(Inst.getOperand(3));
7503 // If we can use the 16-bit encoding and the user didn't explicitly
7504 // request the 32-bit variant, transform it here.
7505 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7506 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7507 Inst.getOperand(2).getImm() == 0 &&
7508 (!static_cast<ARMOperand*>(Operands[2])->isToken() ||
7509 static_cast<ARMOperand*>(Operands[2])->getToken() != ".w")) {
7511 switch (Inst.getOpcode()) {
7512 default: llvm_unreachable("Illegal opcode!");
7513 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
7514 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
7515 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
7516 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
7518 // The operands aren't the same for thumb1 (no rotate operand).
7520 TmpInst.setOpcode(NewOpc);
7521 TmpInst.addOperand(Inst.getOperand(0));
7522 TmpInst.addOperand(Inst.getOperand(1));
7523 TmpInst.addOperand(Inst.getOperand(3));
7524 TmpInst.addOperand(Inst.getOperand(4));
7531 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
7532 // rrx shifts and asr/lsr of #32 is encoded as 0
7533 if (SOpc == ARM_AM::rrx || SOpc == ARM_AM::asr || SOpc == ARM_AM::lsr)
7535 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
7536 // Shifting by zero is accepted as a vanilla 'MOVr'
7538 TmpInst.setOpcode(ARM::MOVr);
7539 TmpInst.addOperand(Inst.getOperand(0));
7540 TmpInst.addOperand(Inst.getOperand(1));
7541 TmpInst.addOperand(Inst.getOperand(3));
7542 TmpInst.addOperand(Inst.getOperand(4));
7543 TmpInst.addOperand(Inst.getOperand(5));
7556 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
7557 if (SOpc == ARM_AM::rrx) return false;
7558 switch (Inst.getOpcode()) {
7559 default: llvm_unreachable("unexpected opcode!");
7560 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
7561 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
7562 case ARM::EORrsi: newOpc = ARM::EORrr; break;
7563 case ARM::BICrsi: newOpc = ARM::BICrr; break;
7564 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
7565 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
7567 // If the shift is by zero, use the non-shifted instruction definition.
7568 // The exception is for right shifts, where 0 == 32
7569 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0 &&
7570 !(SOpc == ARM_AM::lsr || SOpc == ARM_AM::asr)) {
7572 TmpInst.setOpcode(newOpc);
7573 TmpInst.addOperand(Inst.getOperand(0));
7574 TmpInst.addOperand(Inst.getOperand(1));
7575 TmpInst.addOperand(Inst.getOperand(2));
7576 TmpInst.addOperand(Inst.getOperand(4));
7577 TmpInst.addOperand(Inst.getOperand(5));
7578 TmpInst.addOperand(Inst.getOperand(6));
7586 // The mask bits for all but the first condition are represented as
7587 // the low bit of the condition code value implies 't'. We currently
7588 // always have 1 implies 't', so XOR toggle the bits if the low bit
7589 // of the condition code is zero.
7590 MCOperand &MO = Inst.getOperand(1);
7591 unsigned Mask = MO.getImm();
7592 unsigned OrigMask = Mask;
7593 unsigned TZ = countTrailingZeros(Mask);
7594 if ((Inst.getOperand(0).getImm() & 1) == 0) {
7595 assert(Mask && TZ <= 3 && "illegal IT mask value!");
7596 Mask ^= (0xE << TZ) & 0xF;
7600 // Set up the IT block state according to the IT instruction we just
7602 assert(!inITBlock() && "nested IT blocks?!");
7603 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
7604 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
7605 ITState.CurPosition = 0;
7606 ITState.FirstCond = true;
7616 // Assemblers should use the narrow encodings of these instructions when permissible.
7617 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
7618 isARMLowRegister(Inst.getOperand(2).getReg())) &&
7619 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7620 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
7621 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
7622 (!static_cast<ARMOperand*>(Operands[3])->isToken() ||
7623 !static_cast<ARMOperand*>(Operands[3])->getToken().equals_lower(".w"))) {
7625 switch (Inst.getOpcode()) {
7626 default: llvm_unreachable("unexpected opcode");
7627 case ARM::t2LSLrr: NewOpc = ARM::tLSLrr; break;
7628 case ARM::t2LSRrr: NewOpc = ARM::tLSRrr; break;
7629 case ARM::t2ASRrr: NewOpc = ARM::tASRrr; break;
7630 case ARM::t2SBCrr: NewOpc = ARM::tSBC; break;
7631 case ARM::t2RORrr: NewOpc = ARM::tROR; break;
7632 case ARM::t2BICrr: NewOpc = ARM::tBIC; break;
7635 TmpInst.setOpcode(NewOpc);
7636 TmpInst.addOperand(Inst.getOperand(0));
7637 TmpInst.addOperand(Inst.getOperand(5));
7638 TmpInst.addOperand(Inst.getOperand(1));
7639 TmpInst.addOperand(Inst.getOperand(2));
7640 TmpInst.addOperand(Inst.getOperand(3));
7641 TmpInst.addOperand(Inst.getOperand(4));
7652 // Assemblers should use the narrow encodings of these instructions when permissible.
7653 // These instructions are special in that they are commutable, so shorter encodings
7654 // are available more often.
7655 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
7656 isARMLowRegister(Inst.getOperand(2).getReg())) &&
7657 (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() ||
7658 Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg()) &&
7659 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
7660 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
7661 (!static_cast<ARMOperand*>(Operands[3])->isToken() ||
7662 !static_cast<ARMOperand*>(Operands[3])->getToken().equals_lower(".w"))) {
7664 switch (Inst.getOpcode()) {
7665 default: llvm_unreachable("unexpected opcode");
7666 case ARM::t2ADCrr: NewOpc = ARM::tADC; break;
7667 case ARM::t2ANDrr: NewOpc = ARM::tAND; break;
7668 case ARM::t2EORrr: NewOpc = ARM::tEOR; break;
7669 case ARM::t2ORRrr: NewOpc = ARM::tORR; break;
7672 TmpInst.setOpcode(NewOpc);
7673 TmpInst.addOperand(Inst.getOperand(0));
7674 TmpInst.addOperand(Inst.getOperand(5));
7675 if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) {
7676 TmpInst.addOperand(Inst.getOperand(1));
7677 TmpInst.addOperand(Inst.getOperand(2));
7679 TmpInst.addOperand(Inst.getOperand(2));
7680 TmpInst.addOperand(Inst.getOperand(1));
7682 TmpInst.addOperand(Inst.getOperand(3));
7683 TmpInst.addOperand(Inst.getOperand(4));
7693 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
7694 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
7695 // suffix depending on whether they're in an IT block or not.
7696 unsigned Opc = Inst.getOpcode();
7697 const MCInstrDesc &MCID = getInstDesc(Opc);
7698 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
7699 assert(MCID.hasOptionalDef() &&
7700 "optionally flag setting instruction missing optional def operand");
7701 assert(MCID.NumOperands == Inst.getNumOperands() &&
7702 "operand count mismatch!");
7703 // Find the optional-def operand (cc_out).
7706 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
7709 // If we're parsing Thumb1, reject it completely.
7710 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
7711 return Match_MnemonicFail;
7712 // If we're parsing Thumb2, which form is legal depends on whether we're
7714 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
7716 return Match_RequiresITBlock;
7717 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
7719 return Match_RequiresNotITBlock;
7721 // Some high-register supporting Thumb1 encodings only allow both registers
7722 // to be from r0-r7 when in Thumb2.
7723 else if (Opc == ARM::tADDhirr && isThumbOne() &&
7724 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7725 isARMLowRegister(Inst.getOperand(2).getReg()))
7726 return Match_RequiresThumb2;
7727 // Others only require ARMv6 or later.
7728 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
7729 isARMLowRegister(Inst.getOperand(0).getReg()) &&
7730 isARMLowRegister(Inst.getOperand(1).getReg()))
7731 return Match_RequiresV6;
7732 return Match_Success;
7735 static const char *getSubtargetFeatureName(unsigned Val);
7737 MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
7738 SmallVectorImpl<MCParsedAsmOperand*> &Operands,
7739 MCStreamer &Out, unsigned &ErrorInfo,
7740 bool MatchingInlineAsm) {
7742 unsigned MatchResult;
7744 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo,
7746 switch (MatchResult) {
7749 // Context sensitive operand constraints aren't handled by the matcher,
7750 // so check them here.
7751 if (validateInstruction(Inst, Operands)) {
7752 // Still progress the IT block, otherwise one wrong condition causes
7753 // nasty cascading errors.
7754 forwardITPosition();
7758 // Some instructions need post-processing to, for example, tweak which
7759 // encoding is selected. Loop on it while changes happen so the
7760 // individual transformations can chain off each other. E.g.,
7761 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
7762 while (processInstruction(Inst, Operands))
7765 // Only move forward at the very end so that everything in validate
7766 // and process gets a consistent answer about whether we're in an IT
7768 forwardITPosition();
7770 // ITasm is an ARM mode pseudo-instruction that just sets the ITblock and
7771 // doesn't actually encode.
7772 if (Inst.getOpcode() == ARM::ITasm)
7776 Out.EmitInstruction(Inst);
7778 case Match_MissingFeature: {
7779 assert(ErrorInfo && "Unknown missing feature!");
7780 // Special case the error message for the very common case where only
7781 // a single subtarget feature is missing (Thumb vs. ARM, e.g.).
7782 std::string Msg = "instruction requires:";
7784 for (unsigned i = 0; i < (sizeof(ErrorInfo)*8-1); ++i) {
7785 if (ErrorInfo & Mask) {
7787 Msg += getSubtargetFeatureName(ErrorInfo & Mask);
7791 return Error(IDLoc, Msg);
7793 case Match_InvalidOperand: {
7794 SMLoc ErrorLoc = IDLoc;
7795 if (ErrorInfo != ~0U) {
7796 if (ErrorInfo >= Operands.size())
7797 return Error(IDLoc, "too few operands for instruction");
7799 ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
7800 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
7803 return Error(ErrorLoc, "invalid operand for instruction");
7805 case Match_MnemonicFail:
7806 return Error(IDLoc, "invalid instruction",
7807 ((ARMOperand*)Operands[0])->getLocRange());
7808 case Match_RequiresNotITBlock:
7809 return Error(IDLoc, "flag setting instruction only valid outside IT block");
7810 case Match_RequiresITBlock:
7811 return Error(IDLoc, "instruction only valid inside IT block");
7812 case Match_RequiresV6:
7813 return Error(IDLoc, "instruction variant requires ARMv6 or later");
7814 case Match_RequiresThumb2:
7815 return Error(IDLoc, "instruction variant requires Thumb2");
7816 case Match_ImmRange0_4: {
7817 SMLoc ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
7818 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
7819 return Error(ErrorLoc, "immediate operand must be in the range [0,4]");
7821 case Match_ImmRange0_15: {
7822 SMLoc ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
7823 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
7824 return Error(ErrorLoc, "immediate operand must be in the range [0,15]");
7828 llvm_unreachable("Implement any new match types added!");
7831 /// parseDirective parses the arm specific directives
7832 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
7833 StringRef IDVal = DirectiveID.getIdentifier();
7834 if (IDVal == ".word")
7835 return parseDirectiveWord(4, DirectiveID.getLoc());
7836 else if (IDVal == ".thumb")
7837 return parseDirectiveThumb(DirectiveID.getLoc());
7838 else if (IDVal == ".arm")
7839 return parseDirectiveARM(DirectiveID.getLoc());
7840 else if (IDVal == ".thumb_func")
7841 return parseDirectiveThumbFunc(DirectiveID.getLoc());
7842 else if (IDVal == ".code")
7843 return parseDirectiveCode(DirectiveID.getLoc());
7844 else if (IDVal == ".syntax")
7845 return parseDirectiveSyntax(DirectiveID.getLoc());
7846 else if (IDVal == ".unreq")
7847 return parseDirectiveUnreq(DirectiveID.getLoc());
7848 else if (IDVal == ".arch")
7849 return parseDirectiveArch(DirectiveID.getLoc());
7850 else if (IDVal == ".eabi_attribute")
7851 return parseDirectiveEabiAttr(DirectiveID.getLoc());
7852 else if (IDVal == ".fnstart")
7853 return parseDirectiveFnStart(DirectiveID.getLoc());
7854 else if (IDVal == ".fnend")
7855 return parseDirectiveFnEnd(DirectiveID.getLoc());
7856 else if (IDVal == ".cantunwind")
7857 return parseDirectiveCantUnwind(DirectiveID.getLoc());
7858 else if (IDVal == ".personality")
7859 return parseDirectivePersonality(DirectiveID.getLoc());
7860 else if (IDVal == ".handlerdata")
7861 return parseDirectiveHandlerData(DirectiveID.getLoc());
7862 else if (IDVal == ".setfp")
7863 return parseDirectiveSetFP(DirectiveID.getLoc());
7864 else if (IDVal == ".pad")
7865 return parseDirectivePad(DirectiveID.getLoc());
7866 else if (IDVal == ".save")
7867 return parseDirectiveRegSave(DirectiveID.getLoc(), false);
7868 else if (IDVal == ".vsave")
7869 return parseDirectiveRegSave(DirectiveID.getLoc(), true);
7873 /// parseDirectiveWord
7874 /// ::= .word [ expression (, expression)* ]
7875 bool ARMAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
7876 if (getLexer().isNot(AsmToken::EndOfStatement)) {
7878 const MCExpr *Value;
7879 if (getParser().parseExpression(Value))
7882 getParser().getStreamer().EmitValue(Value, Size);
7884 if (getLexer().is(AsmToken::EndOfStatement))
7887 // FIXME: Improve diagnostic.
7888 if (getLexer().isNot(AsmToken::Comma))
7889 return Error(L, "unexpected token in directive");
7898 /// parseDirectiveThumb
7900 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
7901 if (getLexer().isNot(AsmToken::EndOfStatement))
7902 return Error(L, "unexpected token in directive");
7906 return Error(L, "target does not support Thumb mode");
7910 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
7914 /// parseDirectiveARM
7916 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
7917 if (getLexer().isNot(AsmToken::EndOfStatement))
7918 return Error(L, "unexpected token in directive");
7922 return Error(L, "target does not support ARM mode");
7926 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
7930 /// parseDirectiveThumbFunc
7931 /// ::= .thumbfunc symbol_name
7932 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
7933 const MCAsmInfo *MAI = getParser().getStreamer().getContext().getAsmInfo();
7934 bool isMachO = MAI->hasSubsectionsViaSymbols();
7936 bool needFuncName = true;
7938 // Darwin asm has (optionally) function name after .thumb_func direction
7941 const AsmToken &Tok = Parser.getTok();
7942 if (Tok.isNot(AsmToken::EndOfStatement)) {
7943 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
7944 return Error(L, "unexpected token in .thumb_func directive");
7945 Name = Tok.getIdentifier();
7946 Parser.Lex(); // Consume the identifier token.
7947 needFuncName = false;
7951 if (getLexer().isNot(AsmToken::EndOfStatement))
7952 return Error(L, "unexpected token in directive");
7954 // Eat the end of statement and any blank lines that follow.
7955 while (getLexer().is(AsmToken::EndOfStatement))
7958 // FIXME: assuming function name will be the line following .thumb_func
7959 // We really should be checking the next symbol definition even if there's
7960 // stuff in between.
7962 Name = Parser.getTok().getIdentifier();
7965 // Mark symbol as a thumb symbol.
7966 MCSymbol *Func = getParser().getContext().GetOrCreateSymbol(Name);
7967 getParser().getStreamer().EmitThumbFunc(Func);
7971 /// parseDirectiveSyntax
7972 /// ::= .syntax unified | divided
7973 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
7974 const AsmToken &Tok = Parser.getTok();
7975 if (Tok.isNot(AsmToken::Identifier))
7976 return Error(L, "unexpected token in .syntax directive");
7977 StringRef Mode = Tok.getString();
7978 if (Mode == "unified" || Mode == "UNIFIED")
7980 else if (Mode == "divided" || Mode == "DIVIDED")
7981 return Error(L, "'.syntax divided' arm asssembly not supported");
7983 return Error(L, "unrecognized syntax mode in .syntax directive");
7985 if (getLexer().isNot(AsmToken::EndOfStatement))
7986 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
7989 // TODO tell the MC streamer the mode
7990 // getParser().getStreamer().Emit???();
7994 /// parseDirectiveCode
7995 /// ::= .code 16 | 32
7996 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
7997 const AsmToken &Tok = Parser.getTok();
7998 if (Tok.isNot(AsmToken::Integer))
7999 return Error(L, "unexpected token in .code directive");
8000 int64_t Val = Parser.getTok().getIntVal();
8006 return Error(L, "invalid operand to .code directive");
8008 if (getLexer().isNot(AsmToken::EndOfStatement))
8009 return Error(Parser.getTok().getLoc(), "unexpected token in directive");
8014 return Error(L, "target does not support Thumb mode");
8018 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
8021 return Error(L, "target does not support ARM mode");
8025 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
8031 /// parseDirectiveReq
8032 /// ::= name .req registername
8033 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
8034 Parser.Lex(); // Eat the '.req' token.
8036 SMLoc SRegLoc, ERegLoc;
8037 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
8038 Parser.eatToEndOfStatement();
8039 return Error(SRegLoc, "register name expected");
8042 // Shouldn't be anything else.
8043 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
8044 Parser.eatToEndOfStatement();
8045 return Error(Parser.getTok().getLoc(),
8046 "unexpected input in .req directive.");
8049 Parser.Lex(); // Consume the EndOfStatement
8051 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg)
8052 return Error(SRegLoc, "redefinition of '" + Name +
8053 "' does not match original.");
8058 /// parseDirectiveUneq
8059 /// ::= .unreq registername
8060 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
8061 if (Parser.getTok().isNot(AsmToken::Identifier)) {
8062 Parser.eatToEndOfStatement();
8063 return Error(L, "unexpected input in .unreq directive.");
8065 RegisterReqs.erase(Parser.getTok().getIdentifier());
8066 Parser.Lex(); // Eat the identifier.
8070 /// parseDirectiveArch
8072 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
8076 /// parseDirectiveEabiAttr
8077 /// ::= .eabi_attribute int, int
8078 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
8082 /// parseDirectiveFnStart
8084 bool ARMAsmParser::parseDirectiveFnStart(SMLoc L) {
8085 if (FnStartLoc.isValid()) {
8086 Error(L, ".fnstart starts before the end of previous one");
8087 Error(FnStartLoc, "previous .fnstart starts here");
8092 getParser().getStreamer().EmitFnStart();
8096 /// parseDirectiveFnEnd
8098 bool ARMAsmParser::parseDirectiveFnEnd(SMLoc L) {
8099 // Check the ordering of unwind directives
8100 if (!FnStartLoc.isValid())
8101 return Error(L, ".fnstart must precede .fnend directive");
8103 // Reset the unwind directives parser state
8104 resetUnwindDirectiveParserState();
8106 getParser().getStreamer().EmitFnEnd();
8110 /// parseDirectiveCantUnwind
8112 bool ARMAsmParser::parseDirectiveCantUnwind(SMLoc L) {
8113 // Check the ordering of unwind directives
8115 if (!FnStartLoc.isValid())
8116 return Error(L, ".fnstart must precede .cantunwind directive");
8117 if (HandlerDataLoc.isValid()) {
8118 Error(L, ".cantunwind can't be used with .handlerdata directive");
8119 Error(HandlerDataLoc, ".handlerdata was specified here");
8122 if (PersonalityLoc.isValid()) {
8123 Error(L, ".cantunwind can't be used with .personality directive");
8124 Error(PersonalityLoc, ".personality was specified here");
8128 getParser().getStreamer().EmitCantUnwind();
8132 /// parseDirectivePersonality
8133 /// ::= .personality name
8134 bool ARMAsmParser::parseDirectivePersonality(SMLoc L) {
8135 // Check the ordering of unwind directives
8137 if (!FnStartLoc.isValid())
8138 return Error(L, ".fnstart must precede .personality directive");
8139 if (CantUnwindLoc.isValid()) {
8140 Error(L, ".personality can't be used with .cantunwind directive");
8141 Error(CantUnwindLoc, ".cantunwind was specified here");
8144 if (HandlerDataLoc.isValid()) {
8145 Error(L, ".personality must precede .handlerdata directive");
8146 Error(HandlerDataLoc, ".handlerdata was specified here");
8150 // Parse the name of the personality routine
8151 if (Parser.getTok().isNot(AsmToken::Identifier)) {
8152 Parser.eatToEndOfStatement();
8153 return Error(L, "unexpected input in .personality directive.");
8155 StringRef Name(Parser.getTok().getIdentifier());
8158 MCSymbol *PR = getParser().getContext().GetOrCreateSymbol(Name);
8159 getParser().getStreamer().EmitPersonality(PR);
8163 /// parseDirectiveHandlerData
8164 /// ::= .handlerdata
8165 bool ARMAsmParser::parseDirectiveHandlerData(SMLoc L) {
8166 // Check the ordering of unwind directives
8168 if (!FnStartLoc.isValid())
8169 return Error(L, ".fnstart must precede .personality directive");
8170 if (CantUnwindLoc.isValid()) {
8171 Error(L, ".handlerdata can't be used with .cantunwind directive");
8172 Error(CantUnwindLoc, ".cantunwind was specified here");
8176 getParser().getStreamer().EmitHandlerData();
8180 /// parseDirectiveSetFP
8181 /// ::= .setfp fpreg, spreg [, offset]
8182 bool ARMAsmParser::parseDirectiveSetFP(SMLoc L) {
8183 // Check the ordering of unwind directives
8184 if (!FnStartLoc.isValid())
8185 return Error(L, ".fnstart must precede .setfp directive");
8186 if (HandlerDataLoc.isValid())
8187 return Error(L, ".setfp must precede .handlerdata directive");
8190 SMLoc NewFPRegLoc = Parser.getTok().getLoc();
8191 int NewFPReg = tryParseRegister();
8193 return Error(NewFPRegLoc, "frame pointer register expected");
8196 if (!Parser.getTok().is(AsmToken::Comma))
8197 return Error(Parser.getTok().getLoc(), "comma expected");
8198 Parser.Lex(); // skip comma
8201 SMLoc NewSPRegLoc = Parser.getTok().getLoc();
8202 int NewSPReg = tryParseRegister();
8204 return Error(NewSPRegLoc, "stack pointer register expected");
8206 if (NewSPReg != ARM::SP && NewSPReg != FPReg)
8207 return Error(NewSPRegLoc,
8208 "register should be either $sp or the latest fp register");
8210 // Update the frame pointer register
8215 if (Parser.getTok().is(AsmToken::Comma)) {
8216 Parser.Lex(); // skip comma
8218 if (Parser.getTok().isNot(AsmToken::Hash) &&
8219 Parser.getTok().isNot(AsmToken::Dollar)) {
8220 return Error(Parser.getTok().getLoc(), "'#' expected");
8222 Parser.Lex(); // skip hash token.
8224 const MCExpr *OffsetExpr;
8225 SMLoc ExLoc = Parser.getTok().getLoc();
8227 if (getParser().parseExpression(OffsetExpr, EndLoc))
8228 return Error(ExLoc, "malformed setfp offset");
8229 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
8231 return Error(ExLoc, "setfp offset must be an immediate");
8233 Offset = CE->getValue();
8236 getParser().getStreamer().EmitSetFP(static_cast<unsigned>(NewFPReg),
8237 static_cast<unsigned>(NewSPReg),
8244 bool ARMAsmParser::parseDirectivePad(SMLoc L) {
8245 // Check the ordering of unwind directives
8246 if (!FnStartLoc.isValid())
8247 return Error(L, ".fnstart must precede .pad directive");
8248 if (HandlerDataLoc.isValid())
8249 return Error(L, ".pad must precede .handlerdata directive");
8252 if (Parser.getTok().isNot(AsmToken::Hash) &&
8253 Parser.getTok().isNot(AsmToken::Dollar)) {
8254 return Error(Parser.getTok().getLoc(), "'#' expected");
8256 Parser.Lex(); // skip hash token.
8258 const MCExpr *OffsetExpr;
8259 SMLoc ExLoc = Parser.getTok().getLoc();
8261 if (getParser().parseExpression(OffsetExpr, EndLoc))
8262 return Error(ExLoc, "malformed pad offset");
8263 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
8265 return Error(ExLoc, "pad offset must be an immediate");
8267 getParser().getStreamer().EmitPad(CE->getValue());
8271 /// parseDirectiveRegSave
8272 /// ::= .save { registers }
8273 /// ::= .vsave { registers }
8274 bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) {
8275 // Check the ordering of unwind directives
8276 if (!FnStartLoc.isValid())
8277 return Error(L, ".fnstart must precede .save or .vsave directives");
8278 if (HandlerDataLoc.isValid())
8279 return Error(L, ".save or .vsave must precede .handlerdata directive");
8281 // Parse the register list
8282 SmallVector<MCParsedAsmOperand*, 1> Operands;
8283 if (parseRegisterList(Operands))
8285 ARMOperand *Op = (ARMOperand*)Operands[0];
8286 if (!IsVector && !Op->isRegList())
8287 return Error(L, ".save expects GPR registers");
8288 if (IsVector && !Op->isDPRRegList())
8289 return Error(L, ".vsave expects DPR registers");
8291 getParser().getStreamer().EmitRegSave(Op->getRegList(), IsVector);
8295 /// Force static initialization.
8296 extern "C" void LLVMInitializeARMAsmParser() {
8297 RegisterMCAsmParser<ARMAsmParser> X(TheARMTarget);
8298 RegisterMCAsmParser<ARMAsmParser> Y(TheThumbTarget);
8301 #define GET_REGISTER_MATCHER
8302 #define GET_SUBTARGET_FEATURE_NAME
8303 #define GET_MATCHER_IMPLEMENTATION
8304 #include "ARMGenAsmMatcher.inc"
8306 // Define this matcher function after the auto-generated include so we
8307 // have the match class enum definitions.
8308 unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand *AsmOp,
8310 ARMOperand *Op = static_cast<ARMOperand*>(AsmOp);
8311 // If the kind is a token for a literal immediate, check if our asm
8312 // operand matches. This is for InstAliases which have a fixed-value
8313 // immediate in the syntax.
8314 if (Kind == MCK__35_0 && Op->isImm()) {
8315 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op->getImm());
8317 return Match_InvalidOperand;
8318 if (CE->getValue() == 0)
8319 return Match_Success;
8321 return Match_InvalidOperand;