1 //===- ARMInstrThumb.td - Thumb support for ARM ------------*- tablegen -*-===//
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 // This file describes the Thumb instruction set.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 // Thumb specific DAG Nodes.
18 def ARMtcall : SDNode<"ARMISD::tCALL", SDT_ARMcall,
19 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
22 def imm_sr_XFORM: SDNodeXForm<imm, [{
23 unsigned Imm = N->getZExtValue();
24 return CurDAG->getTargetConstant((Imm == 32 ? 0 : Imm), MVT::i32);
26 def ThumbSRImmAsmOperand: AsmOperandClass { let Name = "ImmThumbSR"; }
27 def imm_sr : Operand<i32>, PatLeaf<(imm), [{
28 uint64_t Imm = N->getZExtValue();
29 return Imm > 0 && Imm <= 32;
31 let PrintMethod = "printThumbSRImm";
32 let ParserMatchClass = ThumbSRImmAsmOperand;
35 def imm_neg_XFORM : SDNodeXForm<imm, [{
36 return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
38 def imm_comp_XFORM : SDNodeXForm<imm, [{
39 return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
42 def imm0_7_neg : PatLeaf<(i32 imm), [{
43 return (uint32_t)-N->getZExtValue() < 8;
46 def imm0_255_comp : PatLeaf<(i32 imm), [{
47 return ~((uint32_t)N->getZExtValue()) < 256;
50 def imm8_255 : ImmLeaf<i32, [{
51 return Imm >= 8 && Imm < 256;
53 def imm8_255_neg : PatLeaf<(i32 imm), [{
54 unsigned Val = -N->getZExtValue();
55 return Val >= 8 && Val < 256;
58 // Break imm's up into two pieces: an immediate + a left shift. This uses
59 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
60 // to get the val/shift pieces.
61 def thumb_immshifted : PatLeaf<(imm), [{
62 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
65 def thumb_immshifted_val : SDNodeXForm<imm, [{
66 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
67 return CurDAG->getTargetConstant(V, MVT::i32);
70 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
71 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
72 return CurDAG->getTargetConstant(V, MVT::i32);
75 // ADR instruction labels.
76 def t_adrlabel : Operand<i32> {
77 let EncoderMethod = "getThumbAdrLabelOpValue";
80 // Scaled 4 immediate.
81 def t_imm_s4 : Operand<i32> {
82 let PrintMethod = "printThumbS4ImmOperand";
83 let OperandType = "OPERAND_IMMEDIATE";
86 // Define Thumb specific addressing modes.
88 let OperandType = "OPERAND_PCREL" in {
89 def t_brtarget : Operand<OtherVT> {
90 let EncoderMethod = "getThumbBRTargetOpValue";
91 let DecoderMethod = "DecodeThumbBROperand";
94 def t_bcctarget : Operand<i32> {
95 let EncoderMethod = "getThumbBCCTargetOpValue";
96 let DecoderMethod = "DecodeThumbBCCTargetOperand";
99 def t_cbtarget : Operand<i32> {
100 let EncoderMethod = "getThumbCBTargetOpValue";
101 let DecoderMethod = "DecodeThumbCmpBROperand";
104 def t_bltarget : Operand<i32> {
105 let EncoderMethod = "getThumbBLTargetOpValue";
106 let DecoderMethod = "DecodeThumbBLTargetOperand";
109 def t_blxtarget : Operand<i32> {
110 let EncoderMethod = "getThumbBLXTargetOpValue";
111 let DecoderMethod = "DecodeThumbBLXOffset";
115 // t_addrmode_rr := reg + reg
117 def t_addrmode_rr_asm_operand : AsmOperandClass { let Name = "MemThumbRR"; }
118 def t_addrmode_rr : Operand<i32>,
119 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
120 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
121 let PrintMethod = "printThumbAddrModeRROperand";
122 let DecoderMethod = "DecodeThumbAddrModeRR";
123 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
126 // t_addrmode_rrs := reg + reg
128 // We use separate scaled versions because the Select* functions need
129 // to explicitly check for a matching constant and return false here so that
130 // the reg+imm forms will match instead. This is a horrible way to do that,
131 // as it forces tight coupling between the methods, but it's how selectiondag
133 def t_addrmode_rrs1 : Operand<i32>,
134 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
135 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
136 let PrintMethod = "printThumbAddrModeRROperand";
137 let DecoderMethod = "DecodeThumbAddrModeRR";
138 let ParserMatchClass = t_addrmode_rr_asm_operand;
139 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
141 def t_addrmode_rrs2 : Operand<i32>,
142 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S2", []> {
143 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
144 let DecoderMethod = "DecodeThumbAddrModeRR";
145 let PrintMethod = "printThumbAddrModeRROperand";
146 let ParserMatchClass = t_addrmode_rr_asm_operand;
147 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
149 def t_addrmode_rrs4 : Operand<i32>,
150 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S4", []> {
151 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
152 let DecoderMethod = "DecodeThumbAddrModeRR";
153 let PrintMethod = "printThumbAddrModeRROperand";
154 let ParserMatchClass = t_addrmode_rr_asm_operand;
155 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
158 // t_addrmode_is4 := reg + imm5 * 4
160 def t_addrmode_is4_asm_operand : AsmOperandClass { let Name = "MemThumbRIs4"; }
161 def t_addrmode_is4 : Operand<i32>,
162 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
163 let EncoderMethod = "getAddrModeISOpValue";
164 let DecoderMethod = "DecodeThumbAddrModeIS";
165 let PrintMethod = "printThumbAddrModeImm5S4Operand";
166 let ParserMatchClass = t_addrmode_is4_asm_operand;
167 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
170 // t_addrmode_is2 := reg + imm5 * 2
172 def t_addrmode_is2 : Operand<i32>,
173 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
174 let EncoderMethod = "getAddrModeISOpValue";
175 let DecoderMethod = "DecodeThumbAddrModeIS";
176 let PrintMethod = "printThumbAddrModeImm5S2Operand";
177 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
180 // t_addrmode_is1 := reg + imm5
182 def t_addrmode_is1 : Operand<i32>,
183 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
184 let EncoderMethod = "getAddrModeISOpValue";
185 let DecoderMethod = "DecodeThumbAddrModeIS";
186 let PrintMethod = "printThumbAddrModeImm5S1Operand";
187 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
190 // t_addrmode_sp := sp + imm8 * 4
192 def t_addrmode_sp : Operand<i32>,
193 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
194 let EncoderMethod = "getAddrModeThumbSPOpValue";
195 let DecoderMethod = "DecodeThumbAddrModeSP";
196 let PrintMethod = "printThumbAddrModeSPOperand";
197 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
200 // t_addrmode_pc := <label> => pc + imm8 * 4
202 def t_addrmode_pc : Operand<i32> {
203 let EncoderMethod = "getAddrModePCOpValue";
204 let DecoderMethod = "DecodeThumbAddrModePC";
207 //===----------------------------------------------------------------------===//
208 // Miscellaneous Instructions.
211 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
212 // from removing one half of the matched pairs. That breaks PEI, which assumes
213 // these will always be in pairs, and asserts if it finds otherwise. Better way?
214 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
215 def tADJCALLSTACKUP :
216 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
217 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
218 Requires<[IsThumb, IsThumb1Only]>;
220 def tADJCALLSTACKDOWN :
221 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
222 [(ARMcallseq_start imm:$amt)]>,
223 Requires<[IsThumb, IsThumb1Only]>;
226 class T1SystemEncoding<bits<8> opc>
227 : T1Encoding<0b101111> {
228 let Inst{9-8} = 0b11;
232 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "", []>,
233 T1SystemEncoding<0x00>; // A8.6.110
235 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "", []>,
236 T1SystemEncoding<0x10>; // A8.6.410
238 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "", []>,
239 T1SystemEncoding<0x20>; // A8.6.408
241 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "", []>,
242 T1SystemEncoding<0x30>; // A8.6.409
244 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "", []>,
245 T1SystemEncoding<0x40>; // A8.6.157
247 // The imm operand $val can be used by a debugger to store more information
248 // about the breakpoint.
249 def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
251 T1Encoding<0b101111> {
252 let Inst{9-8} = 0b10;
258 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
259 []>, T1Encoding<0b101101> {
262 let Inst{9-5} = 0b10010;
265 let Inst{2-0} = 0b000;
268 // Change Processor State is a system instruction -- for disassembly only.
269 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
270 NoItinerary, "cps$imod $iflags",
271 [/* For disassembly only; pattern left blank */]>,
279 let Inst{2-0} = iflags;
280 let DecoderMethod = "DecodeThumbCPS";
283 // For both thumb1 and thumb2.
284 let isNotDuplicable = 1, isCodeGenOnly = 1 in
285 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
286 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
287 T1Special<{0,0,?,?}> {
290 let Inst{6-3} = 0b1111; // Rm = pc
294 // ADD <Rd>, sp, #<imm8>
295 // This is rematerializable, which is particularly useful for taking the
296 // address of locals.
297 let isReMaterializable = 1 in
298 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
299 "add\t$dst, $sp, $rhs", []>,
300 T1Encoding<{1,0,1,0,1,?}> {
304 let Inst{10-8} = dst;
306 let DecoderMethod = "DecodeThumbAddSpecialReg";
309 // ADD sp, sp, #<imm7>
310 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
311 "add\t$dst, $rhs", []>,
312 T1Misc<{0,0,0,0,0,?,?}> {
316 let DecoderMethod = "DecodeThumbAddSPImm";
319 // SUB sp, sp, #<imm7>
320 // FIXME: The encoding and the ASM string don't match up.
321 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
322 "sub\t$dst, $rhs", []>,
323 T1Misc<{0,0,0,0,1,?,?}> {
327 let DecoderMethod = "DecodeThumbAddSPImm";
331 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
332 "add\t$dst, $rhs", []>,
333 T1Special<{0,0,?,?}> {
334 // A8.6.9 Encoding T1
336 let Inst{7} = dst{3};
337 let Inst{6-3} = 0b1101;
338 let Inst{2-0} = dst{2-0};
339 let DecoderMethod = "DecodeThumbAddSPReg";
343 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
344 "add\t$dst, $rhs", []>,
345 T1Special<{0,0,?,?}> {
346 // A8.6.9 Encoding T2
350 let Inst{2-0} = 0b101;
351 let DecoderMethod = "DecodeThumbAddSPReg";
354 //===----------------------------------------------------------------------===//
355 // Control Flow Instructions.
359 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
360 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
361 T1Special<{1,1,0,?}> {
365 let Inst{2-0} = 0b000;
369 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
370 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
371 [(ARMretflag)], (tBX LR, pred:$p)>;
373 // Alternative return instruction used by vararg functions.
374 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
376 (tBX GPR:$Rm, pred:$p)>;
379 // All calls clobber the non-callee saved registers. SP is marked as a use to
380 // prevent stack-pointer assignments that appear immediately before calls from
381 // potentially appearing dead.
383 // On non-Darwin platforms R9 is callee-saved.
384 Defs = [R0, R1, R2, R3, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
386 // Also used for Thumb2
387 def tBL : TIx2<0b11110, 0b11, 1,
388 (outs), (ins pred:$p, t_bltarget:$func, variable_ops), IIC_Br,
390 [(ARMtcall tglobaladdr:$func)]>,
391 Requires<[IsThumb, IsNotDarwin]> {
393 let Inst{26} = func{21};
394 let Inst{25-16} = func{20-11};
397 let Inst{10-0} = func{10-0};
400 // ARMv5T and above, also used for Thumb2
401 def tBLXi : TIx2<0b11110, 0b11, 0,
402 (outs), (ins pred:$p, t_blxtarget:$func, variable_ops), IIC_Br,
404 [(ARMcall tglobaladdr:$func)]>,
405 Requires<[IsThumb, HasV5T, IsNotDarwin]> {
407 let Inst{25-16} = func{20-11};
410 let Inst{10-1} = func{10-1};
411 let Inst{0} = 0; // func{0} is assumed zero
414 // Also used for Thumb2
415 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
417 [(ARMtcall GPR:$func)]>,
418 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
419 T1Special<{1,1,1,?}> { // A6.2.3 & A8.6.24;
421 let Inst{6-3} = func;
422 let Inst{2-0} = 0b000;
426 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
428 [(ARMcall_nolink tGPR:$func)]>,
429 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
433 // On Darwin R9 is call-clobbered.
434 // R7 is marked as a use to prevent frame-pointer assignments from being
435 // moved above / below calls.
436 Defs = [R0, R1, R2, R3, R9, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
438 // Also used for Thumb2
439 def tBLr9 : tPseudoExpand<(outs), (ins pred:$p, t_bltarget:$func, variable_ops),
440 4, IIC_Br, [(ARMtcall tglobaladdr:$func)],
441 (tBL pred:$p, t_bltarget:$func)>,
442 Requires<[IsThumb, IsDarwin]>;
444 // ARMv5T and above, also used for Thumb2
445 def tBLXi_r9 : tPseudoExpand<(outs), (ins pred:$p, t_blxtarget:$func, variable_ops),
446 4, IIC_Br, [(ARMcall tglobaladdr:$func)],
447 (tBLXi pred:$p, t_blxtarget:$func)>,
448 Requires<[IsThumb, HasV5T, IsDarwin]>;
450 // Also used for Thumb2
451 def tBLXr_r9 : tPseudoExpand<(outs), (ins pred:$p, GPR:$func, variable_ops),
452 2, IIC_Br, [(ARMtcall GPR:$func)],
453 (tBLXr pred:$p, GPR:$func)>,
454 Requires<[IsThumb, HasV5T, IsDarwin]>;
457 def tBXr9_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
459 [(ARMcall_nolink tGPR:$func)]>,
460 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
463 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
464 let isPredicable = 1 in
465 def tB : T1I<(outs), (ins t_brtarget:$target), IIC_Br,
466 "b\t$target", [(br bb:$target)]>,
467 T1Encoding<{1,1,1,0,0,?}> {
469 let Inst{10-0} = target;
473 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
474 // the clobber of LR.
476 def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
477 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>;
479 def tBR_JTr : tPseudoInst<(outs),
480 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
482 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
483 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
487 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
488 // a two-value operand where a dag node expects two operands. :(
489 let isBranch = 1, isTerminator = 1 in
490 def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
492 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
493 T1BranchCond<{1,1,0,1}> {
497 let Inst{7-0} = target;
501 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
503 let Defs = [R0, R1, R2, R3, R9, R12, QQQQ0, QQQQ2, QQQQ3, PC],
505 // tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls
506 // on Darwin), so it's in ARMInstrThumb2.td.
507 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
509 (tBX GPR:$dst, (ops 14, zero_reg))>,
510 Requires<[IsThumb, IsDarwin]>;
512 // Non-Darwin versions (the difference is R9).
513 let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC],
515 def tTAILJMPdND : tPseudoExpand<(outs), (ins t_brtarget:$dst, variable_ops),
517 (tB t_brtarget:$dst)>,
518 Requires<[IsThumb, IsNotDarwin]>;
519 def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
521 (tBX GPR:$dst, (ops 14, zero_reg))>,
522 Requires<[IsThumb, IsNotDarwin]>;
527 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
528 // A8.6.16 B: Encoding T1
529 // If Inst{11-8} == 0b1111 then SEE SVC
530 let isCall = 1, Uses = [SP] in
531 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
532 "svc", "\t$imm", []>, Encoding16 {
534 let Inst{15-12} = 0b1101;
535 let Inst{11-8} = 0b1111;
539 // The assembler uses 0xDEFE for a trap instruction.
540 let isBarrier = 1, isTerminator = 1 in
541 def tTRAP : TI<(outs), (ins), IIC_Br,
542 "trap", [(trap)]>, Encoding16 {
546 //===----------------------------------------------------------------------===//
547 // Load Store Instructions.
550 // Loads: reg/reg and reg/imm5
551 let canFoldAsLoad = 1, isReMaterializable = 1 in
552 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
553 Operand AddrMode_r, Operand AddrMode_i,
554 AddrMode am, InstrItinClass itin_r,
555 InstrItinClass itin_i, string asm,
558 T1pILdStEncode<reg_opc,
559 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
560 am, itin_r, asm, "\t$Rt, $addr",
561 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
563 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
564 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
565 am, itin_i, asm, "\t$Rt, $addr",
566 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
568 // Stores: reg/reg and reg/imm5
569 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
570 Operand AddrMode_r, Operand AddrMode_i,
571 AddrMode am, InstrItinClass itin_r,
572 InstrItinClass itin_i, string asm,
575 T1pILdStEncode<reg_opc,
576 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
577 am, itin_r, asm, "\t$Rt, $addr",
578 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
580 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
581 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
582 am, itin_i, asm, "\t$Rt, $addr",
583 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
587 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rrs4,
588 t_addrmode_is4, AddrModeT1_4,
589 IIC_iLoad_r, IIC_iLoad_i, "ldr",
590 UnOpFrag<(load node:$Src)>>;
593 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rrs1,
594 t_addrmode_is1, AddrModeT1_1,
595 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
596 UnOpFrag<(zextloadi8 node:$Src)>>;
599 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rrs2,
600 t_addrmode_is2, AddrModeT1_2,
601 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
602 UnOpFrag<(zextloadi16 node:$Src)>>;
604 let AddedComplexity = 10 in
605 def tLDRSB : // A8.6.80
606 T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
607 AddrModeT1_1, IIC_iLoad_bh_r,
608 "ldrsb", "\t$Rt, $addr",
609 [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>;
611 let AddedComplexity = 10 in
612 def tLDRSH : // A8.6.84
613 T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
614 AddrModeT1_2, IIC_iLoad_bh_r,
615 "ldrsh", "\t$Rt, $addr",
616 [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>;
618 let canFoldAsLoad = 1 in
619 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
620 "ldr", "\t$Rt, $addr",
621 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
626 let Inst{7-0} = addr;
630 // FIXME: Use ldr.n to work around a Darwin assembler bug.
631 let canFoldAsLoad = 1, isReMaterializable = 1, isCodeGenOnly = 1 in
632 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
633 "ldr", ".n\t$Rt, $addr",
634 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
635 T1Encoding<{0,1,0,0,1,?}> {
640 let Inst{7-0} = addr;
643 // FIXME: Remove this entry when the above ldr.n workaround is fixed.
644 // For disassembly use only.
645 def tLDRpciDIS : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
646 "ldr", "\t$Rt, $addr",
647 [/* disassembly only */]>,
648 T1Encoding<{0,1,0,0,1,?}> {
653 let Inst{7-0} = addr;
656 // A8.6.194 & A8.6.192
657 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
658 t_addrmode_is4, AddrModeT1_4,
659 IIC_iStore_r, IIC_iStore_i, "str",
660 BinOpFrag<(store node:$LHS, node:$RHS)>>;
662 // A8.6.197 & A8.6.195
663 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rrs1,
664 t_addrmode_is1, AddrModeT1_1,
665 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
666 BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
668 // A8.6.207 & A8.6.205
669 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rrs2,
670 t_addrmode_is2, AddrModeT1_2,
671 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
672 BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
675 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
676 "str", "\t$Rt, $addr",
677 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
682 let Inst{7-0} = addr;
685 //===----------------------------------------------------------------------===//
686 // Load / store multiple Instructions.
689 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
690 InstrItinClass itin_upd, bits<6> T1Enc,
691 bit L_bit, string baseOpc> {
693 T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
694 itin, !strconcat(asm, "${p}\t$Rn, $regs"), []>,
699 let Inst{7-0} = regs;
703 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
704 "$Rn = $wb", itin_upd>,
705 PseudoInstExpansion<(!cast<Instruction>(!strconcat(baseOpc, "IA"))
706 tGPR:$Rn, pred:$p, reglist:$regs)> {
708 let OutOperandList = (outs GPR:$wb);
709 let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
711 let isCodeGenOnly = 1;
713 list<Predicate> Predicates = [IsThumb];
717 // These require base address to be written back or one of the loaded regs.
718 let neverHasSideEffects = 1 in {
720 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
721 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
722 {1,1,0,0,1,?}, 1, "tLDM">;
724 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
725 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
726 {1,1,0,0,0,?}, 0, "tSTM">;
728 } // neverHasSideEffects
730 def : InstAlias<"ldm${p} $Rn!, $regs",
731 (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)>,
732 Requires<[IsThumb, IsThumb1Only]>;
735 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
736 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
738 "pop${p}\t$regs", []>,
739 T1Misc<{1,1,0,?,?,?,?}> {
741 let Inst{8} = regs{15};
742 let Inst{7-0} = regs{7-0};
745 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
746 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
748 "push${p}\t$regs", []>,
749 T1Misc<{0,1,0,?,?,?,?}> {
751 let Inst{8} = regs{14};
752 let Inst{7-0} = regs{7-0};
755 //===----------------------------------------------------------------------===//
756 // Arithmetic Instructions.
759 // Helper classes for encoding T1pI patterns:
760 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
761 string opc, string asm, list<dag> pattern>
762 : T1pI<oops, iops, itin, opc, asm, pattern>,
763 T1DataProcessing<opA> {
769 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
770 string opc, string asm, list<dag> pattern>
771 : T1pI<oops, iops, itin, opc, asm, pattern>,
779 // Helper classes for encoding T1sI patterns:
780 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
781 string opc, string asm, list<dag> pattern>
782 : T1sI<oops, iops, itin, opc, asm, pattern>,
783 T1DataProcessing<opA> {
789 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
790 string opc, string asm, list<dag> pattern>
791 : T1sI<oops, iops, itin, opc, asm, pattern>,
800 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
801 string opc, string asm, list<dag> pattern>
802 : T1sI<oops, iops, itin, opc, asm, pattern>,
810 // Helper classes for encoding T1sIt patterns:
811 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
812 string opc, string asm, list<dag> pattern>
813 : T1sIt<oops, iops, itin, opc, asm, pattern>,
814 T1DataProcessing<opA> {
820 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
821 string opc, string asm, list<dag> pattern>
822 : T1sIt<oops, iops, itin, opc, asm, pattern>,
826 let Inst{10-8} = Rdn;
827 let Inst{7-0} = imm8;
830 // Add with carry register
831 let isCommutable = 1, Uses = [CPSR] in
833 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
834 "adc", "\t$Rdn, $Rm",
835 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
838 def tADDi3 : // A8.6.4 T1
839 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
841 "add", "\t$Rd, $Rm, $imm3",
842 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
844 let Inst{8-6} = imm3;
847 def tADDi8 : // A8.6.4 T2
848 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
849 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
850 "add", "\t$Rdn, $imm8",
851 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
854 let isCommutable = 1 in
855 def tADDrr : // A8.6.6 T1
856 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
858 "add", "\t$Rd, $Rn, $Rm",
859 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
861 let neverHasSideEffects = 1 in
862 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
863 "add", "\t$Rdn, $Rm", []>,
864 T1Special<{0,0,?,?}> {
868 let Inst{7} = Rdn{3};
870 let Inst{2-0} = Rdn{2-0};
874 let isCommutable = 1 in
875 def tAND : // A8.6.12
876 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
878 "and", "\t$Rdn, $Rm",
879 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
882 def tASRri : // A8.6.14
883 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
885 "asr", "\t$Rd, $Rm, $imm5",
886 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
888 let Inst{10-6} = imm5;
892 def tASRrr : // A8.6.15
893 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
895 "asr", "\t$Rdn, $Rm",
896 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
899 def tBIC : // A8.6.20
900 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
902 "bic", "\t$Rdn, $Rm",
903 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
906 let isCompare = 1, Defs = [CPSR] in {
907 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
908 // Compare-to-zero still works out, just not the relationals
909 //def tCMN : // A8.6.33
910 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
912 // "cmn", "\t$lhs, $rhs",
913 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
915 def tCMNz : // A8.6.33
916 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
919 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
921 } // isCompare = 1, Defs = [CPSR]
924 let isCompare = 1, Defs = [CPSR] in {
925 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
926 "cmp", "\t$Rn, $imm8",
927 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
928 T1General<{1,0,1,?,?}> {
933 let Inst{7-0} = imm8;
937 def tCMPr : // A8.6.36 T1
938 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
941 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
943 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
944 "cmp", "\t$Rn, $Rm", []>,
945 T1Special<{0,1,?,?}> {
951 let Inst{2-0} = Rn{2-0};
953 } // isCompare = 1, Defs = [CPSR]
957 let isCommutable = 1 in
958 def tEOR : // A8.6.45
959 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
961 "eor", "\t$Rdn, $Rm",
962 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
965 def tLSLri : // A8.6.88
966 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
968 "lsl", "\t$Rd, $Rm, $imm5",
969 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
971 let Inst{10-6} = imm5;
975 def tLSLrr : // A8.6.89
976 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
978 "lsl", "\t$Rdn, $Rm",
979 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
982 def tLSRri : // A8.6.90
983 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
985 "lsr", "\t$Rd, $Rm, $imm5",
986 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
988 let Inst{10-6} = imm5;
992 def tLSRrr : // A8.6.91
993 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
995 "lsr", "\t$Rdn, $Rm",
996 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
1000 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
1001 "mov", "\t$Rd, $imm8",
1002 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1003 T1General<{1,0,0,?,?}> {
1007 let Inst{10-8} = Rd;
1008 let Inst{7-0} = imm8;
1011 // A7-73: MOV(2) - mov setting flag.
1013 let neverHasSideEffects = 1 in {
1014 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1016 "mov", "\t$Rd, $Rm", "", []>,
1017 T1Special<{1,0,?,?}> {
1021 let Inst{7} = Rd{3};
1023 let Inst{2-0} = Rd{2-0};
1025 let Defs = [CPSR] in
1026 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1027 "movs\t$Rd, $Rm", []>, Encoding16 {
1031 let Inst{15-6} = 0b0000000000;
1035 } // neverHasSideEffects
1037 // Multiply register
1038 let isCommutable = 1 in
1039 def tMUL : // A8.6.105 T1
1040 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1042 "mul", "\t$Rdn, $Rm, $Rdn",
1043 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1045 // Move inverse register
1046 def tMVN : // A8.6.107
1047 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1048 "mvn", "\t$Rd, $Rn",
1049 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1051 // Bitwise or register
1052 let isCommutable = 1 in
1053 def tORR : // A8.6.114
1054 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1056 "orr", "\t$Rdn, $Rm",
1057 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1060 def tREV : // A8.6.134
1061 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1063 "rev", "\t$Rd, $Rm",
1064 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1065 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1067 def tREV16 : // A8.6.135
1068 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1070 "rev16", "\t$Rd, $Rm",
1071 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1072 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1074 def tREVSH : // A8.6.136
1075 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1077 "revsh", "\t$Rd, $Rm",
1078 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1079 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1081 // Rotate right register
1082 def tROR : // A8.6.139
1083 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1085 "ror", "\t$Rdn, $Rm",
1086 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1089 def tRSB : // A8.6.141
1090 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1092 "rsb", "\t$Rd, $Rn, #0",
1093 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1095 // Subtract with carry register
1096 let Uses = [CPSR] in
1097 def tSBC : // A8.6.151
1098 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1100 "sbc", "\t$Rdn, $Rm",
1101 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1103 // Subtract immediate
1104 def tSUBi3 : // A8.6.210 T1
1105 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1107 "sub", "\t$Rd, $Rm, $imm3",
1108 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1110 let Inst{8-6} = imm3;
1113 def tSUBi8 : // A8.6.210 T2
1114 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1116 "sub", "\t$Rdn, $imm8",
1117 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1119 // Subtract register
1120 def tSUBrr : // A8.6.212
1121 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1123 "sub", "\t$Rd, $Rn, $Rm",
1124 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1126 // TODO: A7-96: STMIA - store multiple.
1129 def tSXTB : // A8.6.222
1130 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1132 "sxtb", "\t$Rd, $Rm",
1133 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1134 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1136 // Sign-extend short
1137 def tSXTH : // A8.6.224
1138 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1140 "sxth", "\t$Rd, $Rm",
1141 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1142 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1145 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1146 def tTST : // A8.6.230
1147 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1148 "tst", "\t$Rn, $Rm",
1149 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1152 def tUXTB : // A8.6.262
1153 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1155 "uxtb", "\t$Rd, $Rm",
1156 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1157 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1159 // Zero-extend short
1160 def tUXTH : // A8.6.264
1161 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1163 "uxth", "\t$Rd, $Rm",
1164 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1165 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1167 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1168 // Expanded after instruction selection into a branch sequence.
1169 let usesCustomInserter = 1 in // Expanded after instruction selection.
1170 def tMOVCCr_pseudo :
1171 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1173 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1175 // tLEApcrel - Load a pc-relative address into a register without offending the
1178 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1179 IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
1180 T1Encoding<{1,0,1,0,0,?}> {
1183 let Inst{10-8} = Rd;
1184 let Inst{7-0} = addr;
1185 let DecoderMethod = "DecodeThumbAddSpecialReg";
1188 let neverHasSideEffects = 1, isReMaterializable = 1 in
1189 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1192 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1193 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1196 //===----------------------------------------------------------------------===//
1200 // __aeabi_read_tp preserves the registers r1-r3.
1201 // This is a pseudo inst so that we can get the encoding right,
1202 // complete with fixup for the aeabi_read_tp function.
1203 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1204 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1205 [(set R0, ARMthread_pointer)]>;
1207 //===----------------------------------------------------------------------===//
1208 // SJLJ Exception handling intrinsics
1211 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1212 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1213 // from some other function to get here, and we're using the stack frame for the
1214 // containing function to save/restore registers, we can't keep anything live in
1215 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1216 // tromped upon when we get here from a longjmp(). We force everything out of
1217 // registers except for our own input by listing the relevant registers in
1218 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1219 // preserve all of the callee-saved resgisters, which is exactly what we want.
1220 // $val is a scratch register for our use.
1221 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1222 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1223 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1224 AddrModeNone, 0, NoItinerary, "","",
1225 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1227 // FIXME: Non-Darwin version(s)
1228 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1229 Defs = [ R7, LR, SP ] in
1230 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1231 AddrModeNone, 0, IndexModeNone,
1232 Pseudo, NoItinerary, "", "",
1233 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1234 Requires<[IsThumb, IsDarwin]>;
1236 //===----------------------------------------------------------------------===//
1237 // Non-Instruction Patterns
1241 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1242 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1243 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1244 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1247 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1248 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1249 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1250 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1251 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1252 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1254 // Subtract with carry
1255 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1256 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1257 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1258 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1259 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1260 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1262 // ConstantPool, GlobalAddress
1263 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1264 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1267 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1268 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1271 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1272 Requires<[IsThumb, IsNotDarwin]>;
1273 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1274 Requires<[IsThumb, IsDarwin]>;
1276 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1277 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1278 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1279 Requires<[IsThumb, HasV5T, IsDarwin]>;
1281 // Indirect calls to ARM routines
1282 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1283 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1284 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1285 Requires<[IsThumb, HasV5T, IsDarwin]>;
1287 // zextload i1 -> zextload i8
1288 def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
1289 (tLDRBr t_addrmode_rrs1:$addr)>;
1290 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1291 (tLDRBi t_addrmode_is1:$addr)>;
1293 // extload -> zextload
1294 def : T1Pat<(extloadi1 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1295 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1296 def : T1Pat<(extloadi8 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1297 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1298 def : T1Pat<(extloadi16 t_addrmode_rrs2:$addr), (tLDRHr t_addrmode_rrs2:$addr)>;
1299 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1301 // If it's impossible to use [r,r] address mode for sextload, select to
1302 // ldr{b|h} + sxt{b|h} instead.
1303 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1304 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1305 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1306 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1307 (tSXTB (tLDRBr t_addrmode_rrs1:$addr))>,
1308 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1309 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1310 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1311 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1312 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1313 (tSXTH (tLDRHr t_addrmode_rrs2:$addr))>,
1314 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1316 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1317 (tASRri (tLSLri (tLDRBr t_addrmode_rrs1:$addr), 24), 24)>;
1318 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1319 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1320 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1321 (tASRri (tLSLri (tLDRHr t_addrmode_rrs2:$addr), 16), 16)>;
1322 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1323 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1325 // Large immediate handling.
1328 def : T1Pat<(i32 thumb_immshifted:$src),
1329 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1330 (thumb_immshifted_shamt imm:$src))>;
1332 def : T1Pat<(i32 imm0_255_comp:$src),
1333 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1335 // Pseudo instruction that combines ldr from constpool and add pc. This should
1336 // be expanded into two instructions late to allow if-conversion and
1338 let isReMaterializable = 1 in
1339 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1341 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1343 Requires<[IsThumb, IsThumb1Only]>;
1345 // Pseudo-instruction for merged POP and return.
1346 // FIXME: remove when we have a way to marking a MI with these properties.
1347 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1348 hasExtraDefRegAllocReq = 1 in
1349 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1351 (tPOP pred:$p, reglist:$regs)>;
1353 // Indirect branch using "mov pc, $Rm"
1354 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1355 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1356 2, IIC_Br, [(brind GPR:$Rm)],
1357 (tMOVr PC, GPR:$Rm, pred:$p)>;