1 //===- X86RegisterInfo.cpp - X86 Register Information -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the X86 implementation of the MRegisterInfo class. This
11 // file is responsible for the frame pointer elimination optimization on X86.
13 //===----------------------------------------------------------------------===//
16 #include "X86RegisterInfo.h"
17 #include "X86InstrBuilder.h"
18 #include "X86MachineFunctionInfo.h"
19 #include "X86Subtarget.h"
20 #include "X86TargetMachine.h"
21 #include "llvm/Constants.h"
22 #include "llvm/Function.h"
23 #include "llvm/Type.h"
24 #include "llvm/CodeGen/ValueTypes.h"
25 #include "llvm/CodeGen/MachineInstrBuilder.h"
26 #include "llvm/CodeGen/MachineFunction.h"
27 #include "llvm/CodeGen/MachineFrameInfo.h"
28 #include "llvm/CodeGen/MachineLocation.h"
29 #include "llvm/Target/TargetAsmInfo.h"
30 #include "llvm/Target/TargetFrameInfo.h"
31 #include "llvm/Target/TargetInstrInfo.h"
32 #include "llvm/Target/TargetMachine.h"
33 #include "llvm/Target/TargetOptions.h"
34 #include "llvm/Support/CommandLine.h"
35 #include "llvm/ADT/BitVector.h"
36 #include "llvm/ADT/STLExtras.h"
41 NoFusing("disable-spill-fusing",
42 cl::desc("Disable fusing of spill code into instructions"));
44 PrintFailedFusing("print-failed-fuse-candidates",
45 cl::desc("Print instructions that the allocator wants to"
46 " fuse, but the X86 backend currently can't"),
50 X86RegisterInfo::X86RegisterInfo(X86TargetMachine &tm,
51 const TargetInstrInfo &tii)
52 : X86GenRegisterInfo(X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP),
54 // Cache some information.
55 const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
56 Is64Bit = Subtarget->is64Bit();
68 // getX86RegNum - This function maps LLVM register identifiers to their X86
69 // specific numbering, which is used in various places encoding instructions.
71 unsigned X86RegisterInfo::getX86RegNum(unsigned RegNo) {
73 case X86::RAX: case X86::EAX: case X86::AX: case X86::AL: return N86::EAX;
74 case X86::RCX: case X86::ECX: case X86::CX: case X86::CL: return N86::ECX;
75 case X86::RDX: case X86::EDX: case X86::DX: case X86::DL: return N86::EDX;
76 case X86::RBX: case X86::EBX: case X86::BX: case X86::BL: return N86::EBX;
77 case X86::RSP: case X86::ESP: case X86::SP: case X86::SPL: case X86::AH:
79 case X86::RBP: case X86::EBP: case X86::BP: case X86::BPL: case X86::CH:
81 case X86::RSI: case X86::ESI: case X86::SI: case X86::SIL: case X86::DH:
83 case X86::RDI: case X86::EDI: case X86::DI: case X86::DIL: case X86::BH:
86 case X86::R8: case X86::R8D: case X86::R8W: case X86::R8B:
88 case X86::R9: case X86::R9D: case X86::R9W: case X86::R9B:
90 case X86::R10: case X86::R10D: case X86::R10W: case X86::R10B:
92 case X86::R11: case X86::R11D: case X86::R11W: case X86::R11B:
94 case X86::R12: case X86::R12D: case X86::R12W: case X86::R12B:
96 case X86::R13: case X86::R13D: case X86::R13W: case X86::R13B:
98 case X86::R14: case X86::R14D: case X86::R14W: case X86::R14B:
100 case X86::R15: case X86::R15D: case X86::R15W: case X86::R15B:
103 case X86::ST0: case X86::ST1: case X86::ST2: case X86::ST3:
104 case X86::ST4: case X86::ST5: case X86::ST6: case X86::ST7:
105 return RegNo-X86::ST0;
107 case X86::XMM0: case X86::XMM1: case X86::XMM2: case X86::XMM3:
108 case X86::XMM4: case X86::XMM5: case X86::XMM6: case X86::XMM7:
109 return getDwarfRegNum(RegNo) - getDwarfRegNum(X86::XMM0);
110 case X86::XMM8: case X86::XMM9: case X86::XMM10: case X86::XMM11:
111 case X86::XMM12: case X86::XMM13: case X86::XMM14: case X86::XMM15:
112 return getDwarfRegNum(RegNo) - getDwarfRegNum(X86::XMM8);
115 assert(isVirtualRegister(RegNo) && "Unknown physical register!");
116 assert(0 && "Register allocator hasn't allocated reg correctly yet!");
121 bool X86RegisterInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
122 MachineBasicBlock::iterator MI,
123 const std::vector<CalleeSavedInfo> &CSI) const {
127 MachineFunction &MF = *MBB.getParent();
128 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
129 X86FI->setCalleeSavedFrameSize(CSI.size() * SlotSize);
130 unsigned Opc = Is64Bit ? X86::PUSH64r : X86::PUSH32r;
131 for (unsigned i = CSI.size(); i != 0; --i) {
132 unsigned Reg = CSI[i-1].getReg();
133 // Add the callee-saved register as live-in. It's killed at the spill.
135 BuildMI(MBB, MI, TII.get(Opc)).addReg(Reg);
140 bool X86RegisterInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
141 MachineBasicBlock::iterator MI,
142 const std::vector<CalleeSavedInfo> &CSI) const {
146 unsigned Opc = Is64Bit ? X86::POP64r : X86::POP32r;
147 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
148 unsigned Reg = CSI[i].getReg();
149 BuildMI(MBB, MI, TII.get(Opc), Reg);
154 void X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
155 MachineBasicBlock::iterator MI,
156 unsigned SrcReg, int FrameIdx,
157 const TargetRegisterClass *RC) const {
159 if (RC == &X86::GR64RegClass) {
161 } else if (RC == &X86::GR32RegClass) {
163 } else if (RC == &X86::GR16RegClass) {
165 } else if (RC == &X86::GR8RegClass) {
167 } else if (RC == &X86::GR32_RegClass) {
169 } else if (RC == &X86::GR16_RegClass) {
171 } else if (RC == &X86::RFP80RegClass) {
172 Opc = X86::ST_FpP80m; // pops
173 } else if (RC == &X86::RFP64RegClass) {
175 } else if (RC == &X86::RFP32RegClass) {
177 } else if (RC == &X86::FR32RegClass) {
179 } else if (RC == &X86::FR64RegClass) {
181 } else if (RC == &X86::VR128RegClass) {
183 } else if (RC == &X86::VR64RegClass) {
184 Opc = X86::MMX_MOVQ64mr;
186 assert(0 && "Unknown regclass");
189 addFrameReference(BuildMI(MBB, MI, TII.get(Opc)), FrameIdx)
190 .addReg(SrcReg, false, false, true);
193 void X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
194 MachineBasicBlock::iterator MI,
195 unsigned DestReg, int FrameIdx,
196 const TargetRegisterClass *RC) const{
198 if (RC == &X86::GR64RegClass) {
200 } else if (RC == &X86::GR32RegClass) {
202 } else if (RC == &X86::GR16RegClass) {
204 } else if (RC == &X86::GR8RegClass) {
206 } else if (RC == &X86::GR32_RegClass) {
208 } else if (RC == &X86::GR16_RegClass) {
210 } else if (RC == &X86::RFP80RegClass) {
212 } else if (RC == &X86::RFP64RegClass) {
214 } else if (RC == &X86::RFP32RegClass) {
216 } else if (RC == &X86::FR32RegClass) {
218 } else if (RC == &X86::FR64RegClass) {
220 } else if (RC == &X86::VR128RegClass) {
222 } else if (RC == &X86::VR64RegClass) {
223 Opc = X86::MMX_MOVQ64rm;
225 assert(0 && "Unknown regclass");
228 addFrameReference(BuildMI(MBB, MI, TII.get(Opc), DestReg), FrameIdx);
231 void X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
232 MachineBasicBlock::iterator MI,
233 unsigned DestReg, unsigned SrcReg,
234 const TargetRegisterClass *DestRC,
235 const TargetRegisterClass *SrcRC) const {
236 if (DestRC != SrcRC) {
237 // Moving EFLAGS to / from another register requires a push and a pop.
238 if (SrcRC == &X86::CCRRegClass) {
239 assert(SrcReg == X86::EFLAGS);
240 if (DestRC == &X86::GR64RegClass) {
241 BuildMI(MBB, MI, TII.get(X86::PUSHFQ));
242 BuildMI(MBB, MI, TII.get(X86::POP64r), DestReg);
244 } else if (DestRC == &X86::GR32RegClass) {
245 BuildMI(MBB, MI, TII.get(X86::PUSHFD));
246 BuildMI(MBB, MI, TII.get(X86::POP32r), DestReg);
249 } else if (DestRC == &X86::CCRRegClass) {
250 assert(DestReg == X86::EFLAGS);
251 if (SrcRC == &X86::GR64RegClass) {
252 BuildMI(MBB, MI, TII.get(X86::PUSH64r)).addReg(SrcReg);
253 BuildMI(MBB, MI, TII.get(X86::POPFQ));
255 } else if (SrcRC == &X86::GR32RegClass) {
256 BuildMI(MBB, MI, TII.get(X86::PUSH32r)).addReg(SrcReg);
257 BuildMI(MBB, MI, TII.get(X86::POPFD));
261 cerr << "Not yet supported!";
266 if (DestRC == &X86::GR64RegClass) {
268 } else if (DestRC == &X86::GR32RegClass) {
270 } else if (DestRC == &X86::GR16RegClass) {
272 } else if (DestRC == &X86::GR8RegClass) {
274 } else if (DestRC == &X86::GR32_RegClass) {
276 } else if (DestRC == &X86::GR16_RegClass) {
278 } else if (DestRC == &X86::RFP32RegClass) {
279 Opc = X86::MOV_Fp3232;
280 } else if (DestRC == &X86::RFP64RegClass || DestRC == &X86::RSTRegClass) {
281 Opc = X86::MOV_Fp6464;
282 } else if (DestRC == &X86::RFP80RegClass) {
283 Opc = X86::MOV_Fp8080;
284 } else if (DestRC == &X86::FR32RegClass) {
285 Opc = X86::FsMOVAPSrr;
286 } else if (DestRC == &X86::FR64RegClass) {
287 Opc = X86::FsMOVAPDrr;
288 } else if (DestRC == &X86::VR128RegClass) {
290 } else if (DestRC == &X86::VR64RegClass) {
291 Opc = X86::MMX_MOVQ64rr;
293 assert(0 && "Unknown regclass");
296 BuildMI(MBB, MI, TII.get(Opc), DestReg).addReg(SrcReg);
299 const TargetRegisterClass *
300 X86RegisterInfo::getCrossCopyRegClass(const TargetRegisterClass *RC) const {
301 if (RC == &X86::CCRRegClass)
303 return &X86::GR64RegClass;
305 return &X86::GR32RegClass;
309 void X86RegisterInfo::reMaterialize(MachineBasicBlock &MBB,
310 MachineBasicBlock::iterator I,
312 const MachineInstr *Orig) const {
313 // MOV32r0 etc. are implemented with xor which clobbers condition code.
314 // Re-materialize them as movri instructions to avoid side effects.
315 switch (Orig->getOpcode()) {
317 BuildMI(MBB, I, TII.get(X86::MOV8ri), DestReg).addImm(0);
320 BuildMI(MBB, I, TII.get(X86::MOV16ri), DestReg).addImm(0);
323 BuildMI(MBB, I, TII.get(X86::MOV32ri), DestReg).addImm(0);
326 BuildMI(MBB, I, TII.get(X86::MOV64ri32), DestReg).addImm(0);
329 MachineInstr *MI = Orig->clone();
330 MI->getOperand(0).setReg(DestReg);
337 static const MachineInstrBuilder &FuseInstrAddOperand(MachineInstrBuilder &MIB,
338 MachineOperand &MO) {
340 MIB = MIB.addReg(MO.getReg(), MO.isDef(), MO.isImplicit());
341 else if (MO.isImmediate())
342 MIB = MIB.addImm(MO.getImm());
343 else if (MO.isFrameIndex())
344 MIB = MIB.addFrameIndex(MO.getFrameIndex());
345 else if (MO.isGlobalAddress())
346 MIB = MIB.addGlobalAddress(MO.getGlobal(), MO.getOffset());
347 else if (MO.isConstantPoolIndex())
348 MIB = MIB.addConstantPoolIndex(MO.getConstantPoolIndex(), MO.getOffset());
349 else if (MO.isJumpTableIndex())
350 MIB = MIB.addJumpTableIndex(MO.getJumpTableIndex());
351 else if (MO.isExternalSymbol())
352 MIB = MIB.addExternalSymbol(MO.getSymbolName());
354 assert(0 && "Unknown operand for FuseInst!");
359 static MachineInstr *FuseTwoAddrInst(unsigned Opcode,
360 SmallVector<MachineOperand,4> &MOs,
361 MachineInstr *MI, const TargetInstrInfo &TII) {
362 unsigned NumOps = TII.getNumOperands(MI->getOpcode())-2;
364 // Create the base instruction with the memory operand as the first part.
365 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
366 unsigned NumAddrOps = MOs.size();
367 for (unsigned i = 0; i != NumAddrOps; ++i)
368 MIB = FuseInstrAddOperand(MIB, MOs[i]);
369 if (NumAddrOps < 4) // FrameIndex only
370 MIB.addImm(1).addReg(0).addImm(0);
372 // Loop over the rest of the ri operands, converting them over.
373 for (unsigned i = 0; i != NumOps; ++i) {
374 MachineOperand &MO = MI->getOperand(i+2);
375 MIB = FuseInstrAddOperand(MIB, MO);
380 static MachineInstr *FuseInst(unsigned Opcode, unsigned OpNo,
381 SmallVector<MachineOperand,4> &MOs,
382 MachineInstr *MI, const TargetInstrInfo &TII) {
383 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
385 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
386 MachineOperand &MO = MI->getOperand(i);
388 assert(MO.isRegister() && "Expected to fold into reg operand!");
389 unsigned NumAddrOps = MOs.size();
390 for (unsigned i = 0; i != NumAddrOps; ++i)
391 MIB = FuseInstrAddOperand(MIB, MOs[i]);
392 if (NumAddrOps < 4) // FrameIndex only
393 MIB.addImm(1).addReg(0).addImm(0);
395 MIB = FuseInstrAddOperand(MIB, MO);
401 static MachineInstr *MakeM0Inst(const TargetInstrInfo &TII, unsigned Opcode,
402 SmallVector<MachineOperand,4> &MOs,
404 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
406 unsigned NumAddrOps = MOs.size();
407 for (unsigned i = 0; i != NumAddrOps; ++i)
408 MIB = FuseInstrAddOperand(MIB, MOs[i]);
409 if (NumAddrOps < 4) // FrameIndex only
410 MIB.addImm(1).addReg(0).addImm(0);
411 return MIB.addImm(0);
415 //===----------------------------------------------------------------------===//
416 // Efficient Lookup Table Support
417 //===----------------------------------------------------------------------===//
420 /// TableEntry - Maps the 'from' opcode to a fused form of the 'to' opcode.
423 unsigned from; // Original opcode.
424 unsigned to; // New opcode.
426 // less operators used by STL search.
427 bool operator<(const TableEntry &TE) const { return from < TE.from; }
428 friend bool operator<(const TableEntry &TE, unsigned V) {
431 friend bool operator<(unsigned V, const TableEntry &TE) {
437 /// TableIsSorted - Return true if the table is in 'from' opcode order.
439 static bool TableIsSorted(const TableEntry *Table, unsigned NumEntries) {
440 for (unsigned i = 1; i != NumEntries; ++i)
441 if (!(Table[i-1] < Table[i])) {
442 cerr << "Entries out of order " << Table[i-1].from
443 << " " << Table[i].from << "\n";
449 /// TableLookup - Return the table entry matching the specified opcode.
450 /// Otherwise return NULL.
451 static const TableEntry *TableLookup(const TableEntry *Table, unsigned N,
453 const TableEntry *I = std::lower_bound(Table, Table+N, Opcode);
454 if (I != Table+N && I->from == Opcode)
460 #define ASSERT_SORTED(TABLE)
462 #define ASSERT_SORTED(TABLE) \
463 { static bool TABLE##Checked = false; \
464 if (!TABLE##Checked) { \
465 assert(TableIsSorted(TABLE, array_lengthof(TABLE)) && \
466 "All lookup tables must be sorted for efficient access!"); \
467 TABLE##Checked = true; \
473 X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned i,
474 SmallVector<MachineOperand,4> &MOs) const {
475 // Table (and size) to search
476 const TableEntry *OpcodeTablePtr = NULL;
477 unsigned OpcodeTableSize = 0;
478 bool isTwoAddrFold = false;
479 unsigned NumOps = TII.getNumOperands(MI->getOpcode());
480 bool isTwoAddr = NumOps > 1 &&
481 MI->getInstrDescriptor()->getOperandConstraint(1, TOI::TIED_TO) != -1;
483 MachineInstr *NewMI = NULL;
484 // Folding a memory location into the two-address part of a two-address
485 // instruction is different than folding it other places. It requires
486 // replacing the *two* registers with the memory location.
487 if (isTwoAddr && NumOps >= 2 && i < 2 &&
488 MI->getOperand(0).isRegister() &&
489 MI->getOperand(1).isRegister() &&
490 MI->getOperand(0).getReg() == MI->getOperand(1).getReg()) {
491 static const TableEntry OpcodeTable[] = {
492 { X86::ADC32ri, X86::ADC32mi },
493 { X86::ADC32ri8, X86::ADC32mi8 },
494 { X86::ADC32rr, X86::ADC32mr },
495 { X86::ADC64ri32, X86::ADC64mi32 },
496 { X86::ADC64ri8, X86::ADC64mi8 },
497 { X86::ADC64rr, X86::ADC64mr },
498 { X86::ADD16ri, X86::ADD16mi },
499 { X86::ADD16ri8, X86::ADD16mi8 },
500 { X86::ADD16rr, X86::ADD16mr },
501 { X86::ADD32ri, X86::ADD32mi },
502 { X86::ADD32ri8, X86::ADD32mi8 },
503 { X86::ADD32rr, X86::ADD32mr },
504 { X86::ADD64ri32, X86::ADD64mi32 },
505 { X86::ADD64ri8, X86::ADD64mi8 },
506 { X86::ADD64rr, X86::ADD64mr },
507 { X86::ADD8ri, X86::ADD8mi },
508 { X86::ADD8rr, X86::ADD8mr },
509 { X86::AND16ri, X86::AND16mi },
510 { X86::AND16ri8, X86::AND16mi8 },
511 { X86::AND16rr, X86::AND16mr },
512 { X86::AND32ri, X86::AND32mi },
513 { X86::AND32ri8, X86::AND32mi8 },
514 { X86::AND32rr, X86::AND32mr },
515 { X86::AND64ri32, X86::AND64mi32 },
516 { X86::AND64ri8, X86::AND64mi8 },
517 { X86::AND64rr, X86::AND64mr },
518 { X86::AND8ri, X86::AND8mi },
519 { X86::AND8rr, X86::AND8mr },
520 { X86::DEC16r, X86::DEC16m },
521 { X86::DEC32r, X86::DEC32m },
522 { X86::DEC64_16r, X86::DEC16m },
523 { X86::DEC64_32r, X86::DEC32m },
524 { X86::DEC64r, X86::DEC64m },
525 { X86::DEC8r, X86::DEC8m },
526 { X86::INC16r, X86::INC16m },
527 { X86::INC32r, X86::INC32m },
528 { X86::INC64_16r, X86::INC16m },
529 { X86::INC64_32r, X86::INC32m },
530 { X86::INC64r, X86::INC64m },
531 { X86::INC8r, X86::INC8m },
532 { X86::NEG16r, X86::NEG16m },
533 { X86::NEG32r, X86::NEG32m },
534 { X86::NEG64r, X86::NEG64m },
535 { X86::NEG8r, X86::NEG8m },
536 { X86::NOT16r, X86::NOT16m },
537 { X86::NOT32r, X86::NOT32m },
538 { X86::NOT64r, X86::NOT64m },
539 { X86::NOT8r, X86::NOT8m },
540 { X86::OR16ri, X86::OR16mi },
541 { X86::OR16ri8, X86::OR16mi8 },
542 { X86::OR16rr, X86::OR16mr },
543 { X86::OR32ri, X86::OR32mi },
544 { X86::OR32ri8, X86::OR32mi8 },
545 { X86::OR32rr, X86::OR32mr },
546 { X86::OR64ri32, X86::OR64mi32 },
547 { X86::OR64ri8, X86::OR64mi8 },
548 { X86::OR64rr, X86::OR64mr },
549 { X86::OR8ri, X86::OR8mi },
550 { X86::OR8rr, X86::OR8mr },
551 { X86::ROL16r1, X86::ROL16m1 },
552 { X86::ROL16rCL, X86::ROL16mCL },
553 { X86::ROL16ri, X86::ROL16mi },
554 { X86::ROL32r1, X86::ROL32m1 },
555 { X86::ROL32rCL, X86::ROL32mCL },
556 { X86::ROL32ri, X86::ROL32mi },
557 { X86::ROL64r1, X86::ROL64m1 },
558 { X86::ROL64rCL, X86::ROL64mCL },
559 { X86::ROL64ri, X86::ROL64mi },
560 { X86::ROL8r1, X86::ROL8m1 },
561 { X86::ROL8rCL, X86::ROL8mCL },
562 { X86::ROL8ri, X86::ROL8mi },
563 { X86::ROR16r1, X86::ROR16m1 },
564 { X86::ROR16rCL, X86::ROR16mCL },
565 { X86::ROR16ri, X86::ROR16mi },
566 { X86::ROR32r1, X86::ROR32m1 },
567 { X86::ROR32rCL, X86::ROR32mCL },
568 { X86::ROR32ri, X86::ROR32mi },
569 { X86::ROR64r1, X86::ROR64m1 },
570 { X86::ROR64rCL, X86::ROR64mCL },
571 { X86::ROR64ri, X86::ROR64mi },
572 { X86::ROR8r1, X86::ROR8m1 },
573 { X86::ROR8rCL, X86::ROR8mCL },
574 { X86::ROR8ri, X86::ROR8mi },
575 { X86::SAR16r1, X86::SAR16m1 },
576 { X86::SAR16rCL, X86::SAR16mCL },
577 { X86::SAR16ri, X86::SAR16mi },
578 { X86::SAR32r1, X86::SAR32m1 },
579 { X86::SAR32rCL, X86::SAR32mCL },
580 { X86::SAR32ri, X86::SAR32mi },
581 { X86::SAR64r1, X86::SAR64m1 },
582 { X86::SAR64rCL, X86::SAR64mCL },
583 { X86::SAR64ri, X86::SAR64mi },
584 { X86::SAR8r1, X86::SAR8m1 },
585 { X86::SAR8rCL, X86::SAR8mCL },
586 { X86::SAR8ri, X86::SAR8mi },
587 { X86::SBB32ri, X86::SBB32mi },
588 { X86::SBB32ri8, X86::SBB32mi8 },
589 { X86::SBB32rr, X86::SBB32mr },
590 { X86::SBB64ri32, X86::SBB64mi32 },
591 { X86::SBB64ri8, X86::SBB64mi8 },
592 { X86::SBB64rr, X86::SBB64mr },
593 { X86::SHL16r1, X86::SHL16m1 },
594 { X86::SHL16rCL, X86::SHL16mCL },
595 { X86::SHL16ri, X86::SHL16mi },
596 { X86::SHL32r1, X86::SHL32m1 },
597 { X86::SHL32rCL, X86::SHL32mCL },
598 { X86::SHL32ri, X86::SHL32mi },
599 { X86::SHL64r1, X86::SHL64m1 },
600 { X86::SHL64rCL, X86::SHL64mCL },
601 { X86::SHL64ri, X86::SHL64mi },
602 { X86::SHL8r1, X86::SHL8m1 },
603 { X86::SHL8rCL, X86::SHL8mCL },
604 { X86::SHL8ri, X86::SHL8mi },
605 { X86::SHLD16rrCL, X86::SHLD16mrCL },
606 { X86::SHLD16rri8, X86::SHLD16mri8 },
607 { X86::SHLD32rrCL, X86::SHLD32mrCL },
608 { X86::SHLD32rri8, X86::SHLD32mri8 },
609 { X86::SHLD64rrCL, X86::SHLD64mrCL },
610 { X86::SHLD64rri8, X86::SHLD64mri8 },
611 { X86::SHR16r1, X86::SHR16m1 },
612 { X86::SHR16rCL, X86::SHR16mCL },
613 { X86::SHR16ri, X86::SHR16mi },
614 { X86::SHR32r1, X86::SHR32m1 },
615 { X86::SHR32rCL, X86::SHR32mCL },
616 { X86::SHR32ri, X86::SHR32mi },
617 { X86::SHR64r1, X86::SHR64m1 },
618 { X86::SHR64rCL, X86::SHR64mCL },
619 { X86::SHR64ri, X86::SHR64mi },
620 { X86::SHR8r1, X86::SHR8m1 },
621 { X86::SHR8rCL, X86::SHR8mCL },
622 { X86::SHR8ri, X86::SHR8mi },
623 { X86::SHRD16rrCL, X86::SHRD16mrCL },
624 { X86::SHRD16rri8, X86::SHRD16mri8 },
625 { X86::SHRD32rrCL, X86::SHRD32mrCL },
626 { X86::SHRD32rri8, X86::SHRD32mri8 },
627 { X86::SHRD64rrCL, X86::SHRD64mrCL },
628 { X86::SHRD64rri8, X86::SHRD64mri8 },
629 { X86::SUB16ri, X86::SUB16mi },
630 { X86::SUB16ri8, X86::SUB16mi8 },
631 { X86::SUB16rr, X86::SUB16mr },
632 { X86::SUB32ri, X86::SUB32mi },
633 { X86::SUB32ri8, X86::SUB32mi8 },
634 { X86::SUB32rr, X86::SUB32mr },
635 { X86::SUB64ri32, X86::SUB64mi32 },
636 { X86::SUB64ri8, X86::SUB64mi8 },
637 { X86::SUB64rr, X86::SUB64mr },
638 { X86::SUB8ri, X86::SUB8mi },
639 { X86::SUB8rr, X86::SUB8mr },
640 { X86::XOR16ri, X86::XOR16mi },
641 { X86::XOR16ri8, X86::XOR16mi8 },
642 { X86::XOR16rr, X86::XOR16mr },
643 { X86::XOR32ri, X86::XOR32mi },
644 { X86::XOR32ri8, X86::XOR32mi8 },
645 { X86::XOR32rr, X86::XOR32mr },
646 { X86::XOR64ri32, X86::XOR64mi32 },
647 { X86::XOR64ri8, X86::XOR64mi8 },
648 { X86::XOR64rr, X86::XOR64mr },
649 { X86::XOR8ri, X86::XOR8mi },
650 { X86::XOR8rr, X86::XOR8mr }
652 ASSERT_SORTED(OpcodeTable);
653 OpcodeTablePtr = OpcodeTable;
654 OpcodeTableSize = array_lengthof(OpcodeTable);
655 isTwoAddrFold = true;
656 } else if (i == 0) { // If operand 0
657 if (MI->getOpcode() == X86::MOV16r0)
658 NewMI = MakeM0Inst(TII, X86::MOV16mi, MOs, MI);
659 else if (MI->getOpcode() == X86::MOV32r0)
660 NewMI = MakeM0Inst(TII, X86::MOV32mi, MOs, MI);
661 else if (MI->getOpcode() == X86::MOV64r0)
662 NewMI = MakeM0Inst(TII, X86::MOV64mi32, MOs, MI);
663 else if (MI->getOpcode() == X86::MOV8r0)
664 NewMI = MakeM0Inst(TII, X86::MOV8mi, MOs, MI);
666 NewMI->copyKillDeadInfo(MI);
670 static const TableEntry OpcodeTable[] = {
671 { X86::CALL32r, X86::CALL32m },
672 { X86::CALL64r, X86::CALL64m },
673 { X86::CMP16ri, X86::CMP16mi },
674 { X86::CMP16ri8, X86::CMP16mi8 },
675 { X86::CMP32ri, X86::CMP32mi },
676 { X86::CMP32ri8, X86::CMP32mi8 },
677 { X86::CMP64ri32, X86::CMP64mi32 },
678 { X86::CMP64ri8, X86::CMP64mi8 },
679 { X86::CMP8ri, X86::CMP8mi },
680 { X86::DIV16r, X86::DIV16m },
681 { X86::DIV32r, X86::DIV32m },
682 { X86::DIV64r, X86::DIV64m },
683 { X86::DIV8r, X86::DIV8m },
684 { X86::FsMOVAPDrr, X86::MOVSDmr },
685 { X86::FsMOVAPSrr, X86::MOVSSmr },
686 { X86::IDIV16r, X86::IDIV16m },
687 { X86::IDIV32r, X86::IDIV32m },
688 { X86::IDIV64r, X86::IDIV64m },
689 { X86::IDIV8r, X86::IDIV8m },
690 { X86::IMUL16r, X86::IMUL16m },
691 { X86::IMUL32r, X86::IMUL32m },
692 { X86::IMUL64r, X86::IMUL64m },
693 { X86::IMUL8r, X86::IMUL8m },
694 { X86::JMP32r, X86::JMP32m },
695 { X86::JMP64r, X86::JMP64m },
696 { X86::MOV16ri, X86::MOV16mi },
697 { X86::MOV16rr, X86::MOV16mr },
698 { X86::MOV32ri, X86::MOV32mi },
699 { X86::MOV32rr, X86::MOV32mr },
700 { X86::MOV64ri32, X86::MOV64mi32 },
701 { X86::MOV64rr, X86::MOV64mr },
702 { X86::MOV8ri, X86::MOV8mi },
703 { X86::MOV8rr, X86::MOV8mr },
704 { X86::MOVAPDrr, X86::MOVAPDmr },
705 { X86::MOVAPSrr, X86::MOVAPSmr },
706 { X86::MOVPDI2DIrr, X86::MOVPDI2DImr },
707 { X86::MOVPQIto64rr,X86::MOVPQIto64mr },
708 { X86::MOVPS2SSrr, X86::MOVPS2SSmr },
709 { X86::MOVSDrr, X86::MOVSDmr },
710 { X86::MOVSDto64rr, X86::MOVSDto64mr },
711 { X86::MOVSS2DIrr, X86::MOVSS2DImr },
712 { X86::MOVSSrr, X86::MOVSSmr },
713 { X86::MOVUPDrr, X86::MOVUPDmr },
714 { X86::MOVUPSrr, X86::MOVUPSmr },
715 { X86::MUL16r, X86::MUL16m },
716 { X86::MUL32r, X86::MUL32m },
717 { X86::MUL64r, X86::MUL64m },
718 { X86::MUL8r, X86::MUL8m },
719 { X86::SETAEr, X86::SETAEm },
720 { X86::SETAr, X86::SETAm },
721 { X86::SETBEr, X86::SETBEm },
722 { X86::SETBr, X86::SETBm },
723 { X86::SETEr, X86::SETEm },
724 { X86::SETGEr, X86::SETGEm },
725 { X86::SETGr, X86::SETGm },
726 { X86::SETLEr, X86::SETLEm },
727 { X86::SETLr, X86::SETLm },
728 { X86::SETNEr, X86::SETNEm },
729 { X86::SETNPr, X86::SETNPm },
730 { X86::SETNSr, X86::SETNSm },
731 { X86::SETPr, X86::SETPm },
732 { X86::SETSr, X86::SETSm },
733 { X86::TAILJMPr, X86::TAILJMPm },
734 { X86::TEST16ri, X86::TEST16mi },
735 { X86::TEST32ri, X86::TEST32mi },
736 { X86::TEST64ri32, X86::TEST64mi32 },
737 { X86::TEST8ri, X86::TEST8mi },
738 { X86::XCHG16rr, X86::XCHG16mr },
739 { X86::XCHG32rr, X86::XCHG32mr },
740 { X86::XCHG64rr, X86::XCHG64mr },
741 { X86::XCHG8rr, X86::XCHG8mr }
744 ASSERT_SORTED(OpcodeTable);
745 OpcodeTablePtr = OpcodeTable;
746 OpcodeTableSize = array_lengthof(OpcodeTable);
748 static const TableEntry OpcodeTable[] = {
749 { X86::CMP16rr, X86::CMP16rm },
750 { X86::CMP32rr, X86::CMP32rm },
751 { X86::CMP64rr, X86::CMP64rm },
752 { X86::CMP8rr, X86::CMP8rm },
753 { X86::CVTSD2SSrr, X86::CVTSD2SSrm },
754 { X86::CVTSI2SD64rr, X86::CVTSI2SD64rm },
755 { X86::CVTSI2SDrr, X86::CVTSI2SDrm },
756 { X86::CVTSI2SS64rr, X86::CVTSI2SS64rm },
757 { X86::CVTSI2SSrr, X86::CVTSI2SSrm },
758 { X86::CVTSS2SDrr, X86::CVTSS2SDrm },
759 { X86::CVTTSD2SI64rr, X86::CVTTSD2SI64rm },
760 { X86::CVTTSD2SIrr, X86::CVTTSD2SIrm },
761 { X86::CVTTSS2SI64rr, X86::CVTTSS2SI64rm },
762 { X86::CVTTSS2SIrr, X86::CVTTSS2SIrm },
763 { X86::FsMOVAPDrr, X86::MOVSDrm },
764 { X86::FsMOVAPSrr, X86::MOVSSrm },
765 { X86::IMUL16rri, X86::IMUL16rmi },
766 { X86::IMUL16rri8, X86::IMUL16rmi8 },
767 { X86::IMUL32rri, X86::IMUL32rmi },
768 { X86::IMUL32rri8, X86::IMUL32rmi8 },
769 { X86::IMUL64rri32, X86::IMUL64rmi32 },
770 { X86::IMUL64rri8, X86::IMUL64rmi8 },
771 { X86::Int_CMPSDrr, X86::Int_CMPSDrm },
772 { X86::Int_CMPSSrr, X86::Int_CMPSSrm },
773 { X86::Int_COMISDrr, X86::Int_COMISDrm },
774 { X86::Int_COMISSrr, X86::Int_COMISSrm },
775 { X86::Int_CVTDQ2PDrr, X86::Int_CVTDQ2PDrm },
776 { X86::Int_CVTDQ2PSrr, X86::Int_CVTDQ2PSrm },
777 { X86::Int_CVTPD2DQrr, X86::Int_CVTPD2DQrm },
778 { X86::Int_CVTPD2PSrr, X86::Int_CVTPD2PSrm },
779 { X86::Int_CVTPS2DQrr, X86::Int_CVTPS2DQrm },
780 { X86::Int_CVTPS2PDrr, X86::Int_CVTPS2PDrm },
781 { X86::Int_CVTSD2SI64rr,X86::Int_CVTSD2SI64rm },
782 { X86::Int_CVTSD2SIrr, X86::Int_CVTSD2SIrm },
783 { X86::Int_CVTSD2SSrr, X86::Int_CVTSD2SSrm },
784 { X86::Int_CVTSI2SD64rr,X86::Int_CVTSI2SD64rm },
785 { X86::Int_CVTSI2SDrr, X86::Int_CVTSI2SDrm },
786 { X86::Int_CVTSI2SS64rr,X86::Int_CVTSI2SS64rm },
787 { X86::Int_CVTSI2SSrr, X86::Int_CVTSI2SSrm },
788 { X86::Int_CVTSS2SDrr, X86::Int_CVTSS2SDrm },
789 { X86::Int_CVTSS2SI64rr,X86::Int_CVTSS2SI64rm },
790 { X86::Int_CVTSS2SIrr, X86::Int_CVTSS2SIrm },
791 { X86::Int_CVTTPD2DQrr, X86::Int_CVTTPD2DQrm },
792 { X86::Int_CVTTPS2DQrr, X86::Int_CVTTPS2DQrm },
793 { X86::Int_CVTTSD2SI64rr,X86::Int_CVTTSD2SI64rm },
794 { X86::Int_CVTTSD2SIrr, X86::Int_CVTTSD2SIrm },
795 { X86::Int_CVTTSS2SI64rr,X86::Int_CVTTSS2SI64rm },
796 { X86::Int_CVTTSS2SIrr, X86::Int_CVTTSS2SIrm },
797 { X86::Int_UCOMISDrr, X86::Int_UCOMISDrm },
798 { X86::Int_UCOMISSrr, X86::Int_UCOMISSrm },
799 { X86::MOV16rr, X86::MOV16rm },
800 { X86::MOV32rr, X86::MOV32rm },
801 { X86::MOV64rr, X86::MOV64rm },
802 { X86::MOV64toPQIrr, X86::MOV64toPQIrm },
803 { X86::MOV64toSDrr, X86::MOV64toSDrm },
804 { X86::MOV8rr, X86::MOV8rm },
805 { X86::MOVAPDrr, X86::MOVAPDrm },
806 { X86::MOVAPSrr, X86::MOVAPSrm },
807 { X86::MOVDDUPrr, X86::MOVDDUPrm },
808 { X86::MOVDI2PDIrr, X86::MOVDI2PDIrm },
809 { X86::MOVDI2SSrr, X86::MOVDI2SSrm },
810 { X86::MOVSD2PDrr, X86::MOVSD2PDrm },
811 { X86::MOVSDrr, X86::MOVSDrm },
812 { X86::MOVSHDUPrr, X86::MOVSHDUPrm },
813 { X86::MOVSLDUPrr, X86::MOVSLDUPrm },
814 { X86::MOVSS2PSrr, X86::MOVSS2PSrm },
815 { X86::MOVSSrr, X86::MOVSSrm },
816 { X86::MOVSX16rr8, X86::MOVSX16rm8 },
817 { X86::MOVSX32rr16, X86::MOVSX32rm16 },
818 { X86::MOVSX32rr8, X86::MOVSX32rm8 },
819 { X86::MOVSX64rr16, X86::MOVSX64rm16 },
820 { X86::MOVSX64rr32, X86::MOVSX64rm32 },
821 { X86::MOVSX64rr8, X86::MOVSX64rm8 },
822 { X86::MOVUPDrr, X86::MOVUPDrm },
823 { X86::MOVUPSrr, X86::MOVUPSrm },
824 { X86::MOVZX16rr8, X86::MOVZX16rm8 },
825 { X86::MOVZX32rr16, X86::MOVZX32rm16 },
826 { X86::MOVZX32rr8, X86::MOVZX32rm8 },
827 { X86::MOVZX64rr16, X86::MOVZX64rm16 },
828 { X86::MOVZX64rr8, X86::MOVZX64rm8 },
829 { X86::PSHUFDri, X86::PSHUFDmi },
830 { X86::PSHUFHWri, X86::PSHUFHWmi },
831 { X86::PSHUFLWri, X86::PSHUFLWmi },
832 { X86::PsMOVZX64rr32, X86::PsMOVZX64rm32 },
833 { X86::RCPPSr, X86::RCPPSm },
834 { X86::RCPPSr_Int, X86::RCPPSm_Int },
835 { X86::RSQRTPSr, X86::RSQRTPSm },
836 { X86::RSQRTPSr_Int, X86::RSQRTPSm_Int },
837 { X86::RSQRTSSr, X86::RSQRTSSm },
838 { X86::RSQRTSSr_Int, X86::RSQRTSSm_Int },
839 { X86::SQRTPDr, X86::SQRTPDm },
840 { X86::SQRTPDr_Int, X86::SQRTPDm_Int },
841 { X86::SQRTPSr, X86::SQRTPSm },
842 { X86::SQRTPSr_Int, X86::SQRTPSm_Int },
843 { X86::SQRTSDr, X86::SQRTSDm },
844 { X86::SQRTSDr_Int, X86::SQRTSDm_Int },
845 { X86::SQRTSSr, X86::SQRTSSm },
846 { X86::SQRTSSr_Int, X86::SQRTSSm_Int },
847 { X86::TEST16rr, X86::TEST16rm },
848 { X86::TEST32rr, X86::TEST32rm },
849 { X86::TEST64rr, X86::TEST64rm },
850 { X86::TEST8rr, X86::TEST8rm },
851 // FIXME: TEST*rr EAX,EAX ---> CMP [mem], 0
852 { X86::UCOMISDrr, X86::UCOMISDrm },
853 { X86::UCOMISSrr, X86::UCOMISSrm },
854 { X86::XCHG16rr, X86::XCHG16rm },
855 { X86::XCHG32rr, X86::XCHG32rm },
856 { X86::XCHG64rr, X86::XCHG64rm },
857 { X86::XCHG8rr, X86::XCHG8rm }
860 ASSERT_SORTED(OpcodeTable);
861 OpcodeTablePtr = OpcodeTable;
862 OpcodeTableSize = array_lengthof(OpcodeTable);
864 static const TableEntry OpcodeTable[] = {
865 { X86::ADC32rr, X86::ADC32rm },
866 { X86::ADC64rr, X86::ADC64rm },
867 { X86::ADD16rr, X86::ADD16rm },
868 { X86::ADD32rr, X86::ADD32rm },
869 { X86::ADD64rr, X86::ADD64rm },
870 { X86::ADD8rr, X86::ADD8rm },
871 { X86::ADDPDrr, X86::ADDPDrm },
872 { X86::ADDPSrr, X86::ADDPSrm },
873 { X86::ADDSDrr, X86::ADDSDrm },
874 { X86::ADDSSrr, X86::ADDSSrm },
875 { X86::ADDSUBPDrr, X86::ADDSUBPDrm },
876 { X86::ADDSUBPSrr, X86::ADDSUBPSrm },
877 { X86::AND16rr, X86::AND16rm },
878 { X86::AND32rr, X86::AND32rm },
879 { X86::AND64rr, X86::AND64rm },
880 { X86::AND8rr, X86::AND8rm },
881 { X86::ANDNPDrr, X86::ANDNPDrm },
882 { X86::ANDNPSrr, X86::ANDNPSrm },
883 { X86::ANDPDrr, X86::ANDPDrm },
884 { X86::ANDPSrr, X86::ANDPSrm },
885 { X86::CMOVA16rr, X86::CMOVA16rm },
886 { X86::CMOVA32rr, X86::CMOVA32rm },
887 { X86::CMOVA64rr, X86::CMOVA64rm },
888 { X86::CMOVAE16rr, X86::CMOVAE16rm },
889 { X86::CMOVAE32rr, X86::CMOVAE32rm },
890 { X86::CMOVAE64rr, X86::CMOVAE64rm },
891 { X86::CMOVB16rr, X86::CMOVB16rm },
892 { X86::CMOVB32rr, X86::CMOVB32rm },
893 { X86::CMOVB64rr, X86::CMOVB64rm },
894 { X86::CMOVBE16rr, X86::CMOVBE16rm },
895 { X86::CMOVBE32rr, X86::CMOVBE32rm },
896 { X86::CMOVBE64rr, X86::CMOVBE64rm },
897 { X86::CMOVE16rr, X86::CMOVE16rm },
898 { X86::CMOVE32rr, X86::CMOVE32rm },
899 { X86::CMOVE64rr, X86::CMOVE64rm },
900 { X86::CMOVG16rr, X86::CMOVG16rm },
901 { X86::CMOVG32rr, X86::CMOVG32rm },
902 { X86::CMOVG64rr, X86::CMOVG64rm },
903 { X86::CMOVGE16rr, X86::CMOVGE16rm },
904 { X86::CMOVGE32rr, X86::CMOVGE32rm },
905 { X86::CMOVGE64rr, X86::CMOVGE64rm },
906 { X86::CMOVL16rr, X86::CMOVL16rm },
907 { X86::CMOVL32rr, X86::CMOVL32rm },
908 { X86::CMOVL64rr, X86::CMOVL64rm },
909 { X86::CMOVLE16rr, X86::CMOVLE16rm },
910 { X86::CMOVLE32rr, X86::CMOVLE32rm },
911 { X86::CMOVLE64rr, X86::CMOVLE64rm },
912 { X86::CMOVNE16rr, X86::CMOVNE16rm },
913 { X86::CMOVNE32rr, X86::CMOVNE32rm },
914 { X86::CMOVNE64rr, X86::CMOVNE64rm },
915 { X86::CMOVNP16rr, X86::CMOVNP16rm },
916 { X86::CMOVNP32rr, X86::CMOVNP32rm },
917 { X86::CMOVNP64rr, X86::CMOVNP64rm },
918 { X86::CMOVNS16rr, X86::CMOVNS16rm },
919 { X86::CMOVNS32rr, X86::CMOVNS32rm },
920 { X86::CMOVNS64rr, X86::CMOVNS64rm },
921 { X86::CMOVP16rr, X86::CMOVP16rm },
922 { X86::CMOVP32rr, X86::CMOVP32rm },
923 { X86::CMOVP64rr, X86::CMOVP64rm },
924 { X86::CMOVS16rr, X86::CMOVS16rm },
925 { X86::CMOVS32rr, X86::CMOVS32rm },
926 { X86::CMOVS64rr, X86::CMOVS64rm },
927 { X86::CMPPDrri, X86::CMPPDrmi },
928 { X86::CMPPSrri, X86::CMPPSrmi },
929 { X86::CMPSDrr, X86::CMPSDrm },
930 { X86::CMPSSrr, X86::CMPSSrm },
931 { X86::DIVPDrr, X86::DIVPDrm },
932 { X86::DIVPSrr, X86::DIVPSrm },
933 { X86::DIVSDrr, X86::DIVSDrm },
934 { X86::DIVSSrr, X86::DIVSSrm },
935 { X86::HADDPDrr, X86::HADDPDrm },
936 { X86::HADDPSrr, X86::HADDPSrm },
937 { X86::HSUBPDrr, X86::HSUBPDrm },
938 { X86::HSUBPSrr, X86::HSUBPSrm },
939 { X86::IMUL16rr, X86::IMUL16rm },
940 { X86::IMUL32rr, X86::IMUL32rm },
941 { X86::IMUL64rr, X86::IMUL64rm },
942 { X86::MAXPDrr, X86::MAXPDrm },
943 { X86::MAXPDrr_Int, X86::MAXPDrm_Int },
944 { X86::MAXPSrr, X86::MAXPSrm },
945 { X86::MAXPSrr_Int, X86::MAXPSrm_Int },
946 { X86::MAXSDrr, X86::MAXSDrm },
947 { X86::MAXSDrr_Int, X86::MAXSDrm_Int },
948 { X86::MAXSSrr, X86::MAXSSrm },
949 { X86::MAXSSrr_Int, X86::MAXSSrm_Int },
950 { X86::MINPDrr, X86::MINPDrm },
951 { X86::MINPDrr_Int, X86::MINPDrm_Int },
952 { X86::MINPSrr, X86::MINPSrm },
953 { X86::MINPSrr_Int, X86::MINPSrm_Int },
954 { X86::MINSDrr, X86::MINSDrm },
955 { X86::MINSDrr_Int, X86::MINSDrm_Int },
956 { X86::MINSSrr, X86::MINSSrm },
957 { X86::MINSSrr_Int, X86::MINSSrm_Int },
958 { X86::MULPDrr, X86::MULPDrm },
959 { X86::MULPSrr, X86::MULPSrm },
960 { X86::MULSDrr, X86::MULSDrm },
961 { X86::MULSSrr, X86::MULSSrm },
962 { X86::OR16rr, X86::OR16rm },
963 { X86::OR32rr, X86::OR32rm },
964 { X86::OR64rr, X86::OR64rm },
965 { X86::OR8rr, X86::OR8rm },
966 { X86::ORPDrr, X86::ORPDrm },
967 { X86::ORPSrr, X86::ORPSrm },
968 { X86::PACKSSDWrr, X86::PACKSSDWrm },
969 { X86::PACKSSWBrr, X86::PACKSSWBrm },
970 { X86::PACKUSWBrr, X86::PACKUSWBrm },
971 { X86::PADDBrr, X86::PADDBrm },
972 { X86::PADDDrr, X86::PADDDrm },
973 { X86::PADDQrr, X86::PADDQrm },
974 { X86::PADDSBrr, X86::PADDSBrm },
975 { X86::PADDSWrr, X86::PADDSWrm },
976 { X86::PADDWrr, X86::PADDWrm },
977 { X86::PANDNrr, X86::PANDNrm },
978 { X86::PANDrr, X86::PANDrm },
979 { X86::PAVGBrr, X86::PAVGBrm },
980 { X86::PAVGWrr, X86::PAVGWrm },
981 { X86::PCMPEQBrr, X86::PCMPEQBrm },
982 { X86::PCMPEQDrr, X86::PCMPEQDrm },
983 { X86::PCMPEQWrr, X86::PCMPEQWrm },
984 { X86::PCMPGTBrr, X86::PCMPGTBrm },
985 { X86::PCMPGTDrr, X86::PCMPGTDrm },
986 { X86::PCMPGTWrr, X86::PCMPGTWrm },
987 { X86::PINSRWrri, X86::PINSRWrmi },
988 { X86::PMADDWDrr, X86::PMADDWDrm },
989 { X86::PMAXSWrr, X86::PMAXSWrm },
990 { X86::PMAXUBrr, X86::PMAXUBrm },
991 { X86::PMINSWrr, X86::PMINSWrm },
992 { X86::PMINUBrr, X86::PMINUBrm },
993 { X86::PMULHUWrr, X86::PMULHUWrm },
994 { X86::PMULHWrr, X86::PMULHWrm },
995 { X86::PMULLWrr, X86::PMULLWrm },
996 { X86::PMULUDQrr, X86::PMULUDQrm },
997 { X86::PORrr, X86::PORrm },
998 { X86::PSADBWrr, X86::PSADBWrm },
999 { X86::PSLLDrr, X86::PSLLDrm },
1000 { X86::PSLLQrr, X86::PSLLQrm },
1001 { X86::PSLLWrr, X86::PSLLWrm },
1002 { X86::PSRADrr, X86::PSRADrm },
1003 { X86::PSRAWrr, X86::PSRAWrm },
1004 { X86::PSRLDrr, X86::PSRLDrm },
1005 { X86::PSRLQrr, X86::PSRLQrm },
1006 { X86::PSRLWrr, X86::PSRLWrm },
1007 { X86::PSUBBrr, X86::PSUBBrm },
1008 { X86::PSUBDrr, X86::PSUBDrm },
1009 { X86::PSUBSBrr, X86::PSUBSBrm },
1010 { X86::PSUBSWrr, X86::PSUBSWrm },
1011 { X86::PSUBWrr, X86::PSUBWrm },
1012 { X86::PUNPCKHBWrr, X86::PUNPCKHBWrm },
1013 { X86::PUNPCKHDQrr, X86::PUNPCKHDQrm },
1014 { X86::PUNPCKHQDQrr, X86::PUNPCKHQDQrm },
1015 { X86::PUNPCKHWDrr, X86::PUNPCKHWDrm },
1016 { X86::PUNPCKLBWrr, X86::PUNPCKLBWrm },
1017 { X86::PUNPCKLDQrr, X86::PUNPCKLDQrm },
1018 { X86::PUNPCKLQDQrr, X86::PUNPCKLQDQrm },
1019 { X86::PUNPCKLWDrr, X86::PUNPCKLWDrm },
1020 { X86::PXORrr, X86::PXORrm },
1021 { X86::SBB32rr, X86::SBB32rm },
1022 { X86::SBB64rr, X86::SBB64rm },
1023 { X86::SHUFPDrri, X86::SHUFPDrmi },
1024 { X86::SHUFPSrri, X86::SHUFPSrmi },
1025 { X86::SUB16rr, X86::SUB16rm },
1026 { X86::SUB32rr, X86::SUB32rm },
1027 { X86::SUB64rr, X86::SUB64rm },
1028 { X86::SUB8rr, X86::SUB8rm },
1029 { X86::SUBPDrr, X86::SUBPDrm },
1030 { X86::SUBPSrr, X86::SUBPSrm },
1031 { X86::SUBSDrr, X86::SUBSDrm },
1032 { X86::SUBSSrr, X86::SUBSSrm },
1033 // FIXME: TEST*rr -> swapped operand of TEST*mr.
1034 { X86::UNPCKHPDrr, X86::UNPCKHPDrm },
1035 { X86::UNPCKHPSrr, X86::UNPCKHPSrm },
1036 { X86::UNPCKLPDrr, X86::UNPCKLPDrm },
1037 { X86::UNPCKLPSrr, X86::UNPCKLPSrm },
1038 { X86::XOR16rr, X86::XOR16rm },
1039 { X86::XOR32rr, X86::XOR32rm },
1040 { X86::XOR64rr, X86::XOR64rm },
1041 { X86::XOR8rr, X86::XOR8rm },
1042 { X86::XORPDrr, X86::XORPDrm },
1043 { X86::XORPSrr, X86::XORPSrm }
1046 ASSERT_SORTED(OpcodeTable);
1047 OpcodeTablePtr = OpcodeTable;
1048 OpcodeTableSize = array_lengthof(OpcodeTable);
1051 // If table selected...
1052 if (OpcodeTablePtr) {
1053 // Find the Opcode to fuse
1054 unsigned fromOpcode = MI->getOpcode();
1055 // Lookup fromOpcode in table
1056 if (const TableEntry *Entry = TableLookup(OpcodeTablePtr, OpcodeTableSize,
1059 NewMI = FuseTwoAddrInst(Entry->to, MOs, MI, TII);
1061 NewMI = FuseInst(Entry->to, i, MOs, MI, TII);
1062 NewMI->copyKillDeadInfo(MI);
1068 if (PrintFailedFusing)
1069 cerr << "We failed to fuse ("
1070 << ((i == 1) ? "r" : "s") << "): " << *MI;
1075 MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
1076 int FrameIndex) const {
1077 // Check switch flag
1078 if (NoFusing) return NULL;
1079 SmallVector<MachineOperand,4> MOs;
1080 MOs.push_back(MachineOperand::CreateFrameIndex(FrameIndex));
1081 return foldMemoryOperand(MI, OpNum, MOs);
1084 MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
1085 MachineInstr *LoadMI) const {
1086 // Check switch flag
1087 if (NoFusing) return NULL;
1088 SmallVector<MachineOperand,4> MOs;
1089 unsigned NumOps = TII.getNumOperands(LoadMI->getOpcode());
1090 for (unsigned i = NumOps - 4; i != NumOps; ++i)
1091 MOs.push_back(LoadMI->getOperand(i));
1092 return foldMemoryOperand(MI, OpNum, MOs);
1096 X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
1097 static const unsigned CalleeSavedRegs32Bit[] = {
1098 X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
1101 static const unsigned CalleeSavedRegs32EHRet[] = {
1102 X86::EAX, X86::EDX, X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
1105 static const unsigned CalleeSavedRegs64Bit[] = {
1106 X86::RBX, X86::R12, X86::R13, X86::R14, X86::R15, X86::RBP, 0
1110 return CalleeSavedRegs64Bit;
1113 MachineFrameInfo *MFI = MF->getFrameInfo();
1114 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1115 if (MMI && MMI->callsEHReturn())
1116 return CalleeSavedRegs32EHRet;
1118 return CalleeSavedRegs32Bit;
1122 const TargetRegisterClass* const*
1123 X86RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
1124 static const TargetRegisterClass * const CalleeSavedRegClasses32Bit[] = {
1125 &X86::GR32RegClass, &X86::GR32RegClass,
1126 &X86::GR32RegClass, &X86::GR32RegClass, 0
1128 static const TargetRegisterClass * const CalleeSavedRegClasses32EHRet[] = {
1129 &X86::GR32RegClass, &X86::GR32RegClass,
1130 &X86::GR32RegClass, &X86::GR32RegClass,
1131 &X86::GR32RegClass, &X86::GR32RegClass, 0
1133 static const TargetRegisterClass * const CalleeSavedRegClasses64Bit[] = {
1134 &X86::GR64RegClass, &X86::GR64RegClass,
1135 &X86::GR64RegClass, &X86::GR64RegClass,
1136 &X86::GR64RegClass, &X86::GR64RegClass, 0
1140 return CalleeSavedRegClasses64Bit;
1143 MachineFrameInfo *MFI = MF->getFrameInfo();
1144 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1145 if (MMI && MMI->callsEHReturn())
1146 return CalleeSavedRegClasses32EHRet;
1148 return CalleeSavedRegClasses32Bit;
1153 BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
1154 BitVector Reserved(getNumRegs());
1155 Reserved.set(X86::RSP);
1156 Reserved.set(X86::ESP);
1157 Reserved.set(X86::SP);
1158 Reserved.set(X86::SPL);
1160 Reserved.set(X86::RBP);
1161 Reserved.set(X86::EBP);
1162 Reserved.set(X86::BP);
1163 Reserved.set(X86::BPL);
1168 //===----------------------------------------------------------------------===//
1169 // Stack Frame Processing methods
1170 //===----------------------------------------------------------------------===//
1172 // hasFP - Return true if the specified function should have a dedicated frame
1173 // pointer register. This is true if the function has variable sized allocas or
1174 // if frame pointer elimination is disabled.
1176 bool X86RegisterInfo::hasFP(const MachineFunction &MF) const {
1177 MachineFrameInfo *MFI = MF.getFrameInfo();
1178 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1180 return (NoFramePointerElim ||
1181 MFI->hasVarSizedObjects() ||
1182 MF.getInfo<X86MachineFunctionInfo>()->getForceFramePointer() ||
1183 (MMI && MMI->callsUnwindInit()));
1186 bool X86RegisterInfo::hasReservedCallFrame(MachineFunction &MF) const {
1187 return !MF.getFrameInfo()->hasVarSizedObjects();
1190 void X86RegisterInfo::
1191 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
1192 MachineBasicBlock::iterator I) const {
1193 if (!hasReservedCallFrame(MF)) {
1194 // If the stack pointer can be changed after prologue, turn the
1195 // adjcallstackup instruction into a 'sub ESP, <amt>' and the
1196 // adjcallstackdown instruction into 'add ESP, <amt>'
1197 // TODO: consider using push / pop instead of sub + store / add
1198 MachineInstr *Old = I;
1199 uint64_t Amount = Old->getOperand(0).getImm();
1201 // We need to keep the stack aligned properly. To do this, we round the
1202 // amount of space needed for the outgoing arguments up to the next
1203 // alignment boundary.
1204 unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment();
1205 Amount = (Amount+Align-1)/Align*Align;
1207 MachineInstr *New = 0;
1208 if (Old->getOpcode() == X86::ADJCALLSTACKDOWN) {
1209 New=BuildMI(TII.get(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri), StackPtr)
1210 .addReg(StackPtr).addImm(Amount);
1212 assert(Old->getOpcode() == X86::ADJCALLSTACKUP);
1213 // factor out the amount the callee already popped.
1214 uint64_t CalleeAmt = Old->getOperand(1).getImm();
1215 Amount -= CalleeAmt;
1217 unsigned Opc = (Amount < 128) ?
1218 (Is64Bit ? X86::ADD64ri8 : X86::ADD32ri8) :
1219 (Is64Bit ? X86::ADD64ri32 : X86::ADD32ri);
1220 New = BuildMI(TII.get(Opc), StackPtr)
1221 .addReg(StackPtr).addImm(Amount);
1225 // Replace the pseudo instruction with a new instruction...
1226 if (New) MBB.insert(I, New);
1228 } else if (I->getOpcode() == X86::ADJCALLSTACKUP) {
1229 // If we are performing frame pointer elimination and if the callee pops
1230 // something off the stack pointer, add it back. We do this until we have
1231 // more advanced stack pointer tracking ability.
1232 if (uint64_t CalleeAmt = I->getOperand(1).getImm()) {
1233 unsigned Opc = (CalleeAmt < 128) ?
1234 (Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
1235 (Is64Bit ? X86::SUB64ri32 : X86::SUB32ri);
1237 BuildMI(TII.get(Opc), StackPtr).addReg(StackPtr).addImm(CalleeAmt);
1245 void X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
1246 int SPAdj, RegScavenger *RS) const{
1247 assert(SPAdj == 0 && "Unexpected");
1250 MachineInstr &MI = *II;
1251 MachineFunction &MF = *MI.getParent()->getParent();
1252 while (!MI.getOperand(i).isFrameIndex()) {
1254 assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
1257 int FrameIndex = MI.getOperand(i).getFrameIndex();
1258 // This must be part of a four operand memory reference. Replace the
1259 // FrameIndex with base register with EBP. Add an offset to the offset.
1260 MI.getOperand(i).ChangeToRegister(hasFP(MF) ? FramePtr : StackPtr, false);
1262 // Now add the frame object offset to the offset from EBP.
1263 int64_t Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
1264 MI.getOperand(i+3).getImm()+SlotSize;
1267 Offset += MF.getFrameInfo()->getStackSize();
1269 Offset += SlotSize; // Skip the saved EBP
1271 MI.getOperand(i+3).ChangeToImmediate(Offset);
1275 X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF) const{
1277 // Create a frame entry for the EBP register that must be saved.
1278 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(SlotSize,
1279 (int)SlotSize * -2);
1280 assert(FrameIdx == MF.getFrameInfo()->getObjectIndexBegin() &&
1281 "Slot for EBP register must be last in order to be found!");
1285 /// emitSPUpdate - Emit a series of instructions to increment / decrement the
1286 /// stack pointer by a constant value.
1288 void emitSPUpdate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
1289 unsigned StackPtr, int64_t NumBytes, bool Is64Bit,
1290 const TargetInstrInfo &TII) {
1291 bool isSub = NumBytes < 0;
1292 uint64_t Offset = isSub ? -NumBytes : NumBytes;
1293 unsigned Opc = isSub
1295 (Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
1296 (Is64Bit ? X86::SUB64ri32 : X86::SUB32ri))
1298 (Is64Bit ? X86::ADD64ri8 : X86::ADD32ri8) :
1299 (Is64Bit ? X86::ADD64ri32 : X86::ADD32ri));
1300 uint64_t Chunk = (1LL << 31) - 1;
1303 uint64_t ThisVal = (Offset > Chunk) ? Chunk : Offset;
1304 BuildMI(MBB, MBBI, TII.get(Opc), StackPtr).addReg(StackPtr).addImm(ThisVal);
1309 void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
1310 MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
1311 MachineFrameInfo *MFI = MF.getFrameInfo();
1312 unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment();
1313 const Function* Fn = MF.getFunction();
1314 const X86Subtarget* Subtarget = &MF.getTarget().getSubtarget<X86Subtarget>();
1315 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1316 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
1317 MachineBasicBlock::iterator MBBI = MBB.begin();
1319 // Prepare for frame info.
1320 unsigned FrameLabelId = 0;
1322 // Get the number of bytes to allocate from the FrameInfo
1323 uint64_t StackSize = MFI->getStackSize();
1324 uint64_t NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
1327 // Get the offset of the stack slot for the EBP register... which is
1328 // guaranteed to be the last slot by processFunctionBeforeFrameFinalized.
1329 // Update the frame offset adjustment.
1330 MFI->setOffsetAdjustment(SlotSize-NumBytes);
1332 // Save EBP into the appropriate stack slot...
1333 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
1335 NumBytes -= SlotSize;
1337 if (MMI && MMI->needsFrameInfo()) {
1338 // Mark effective beginning of when frame pointer becomes valid.
1339 FrameLabelId = MMI->NextLabelID();
1340 BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(FrameLabelId);
1343 // Update EBP with the new base value...
1344 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr), FramePtr)
1348 unsigned ReadyLabelId = 0;
1349 if (MMI && MMI->needsFrameInfo()) {
1350 // Mark effective beginning of when frame pointer is ready.
1351 ReadyLabelId = MMI->NextLabelID();
1352 BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(ReadyLabelId);
1355 // Skip the callee-saved push instructions.
1356 while (MBBI != MBB.end() &&
1357 (MBBI->getOpcode() == X86::PUSH32r ||
1358 MBBI->getOpcode() == X86::PUSH64r))
1361 if (NumBytes) { // adjust stack pointer: ESP -= numbytes
1362 if (NumBytes >= 4096 && Subtarget->isTargetCygMing()) {
1363 // Check, whether EAX is livein for this function
1364 bool isEAXAlive = false;
1365 for (MachineFunction::livein_iterator II = MF.livein_begin(),
1366 EE = MF.livein_end(); (II != EE) && !isEAXAlive; ++II) {
1367 unsigned Reg = II->first;
1368 isEAXAlive = (Reg == X86::EAX || Reg == X86::AX ||
1369 Reg == X86::AH || Reg == X86::AL);
1372 // Function prologue calls _alloca to probe the stack when allocating
1373 // more than 4k bytes in one go. Touching the stack at 4K increments is
1374 // necessary to ensure that the guard pages used by the OS virtual memory
1375 // manager are allocated in correct sequence.
1377 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(NumBytes);
1378 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32))
1379 .addExternalSymbol("_alloca");
1382 BuildMI(MBB, MBBI, TII.get(X86::PUSH32r), X86::EAX);
1383 // Allocate NumBytes-4 bytes on stack. We'll also use 4 already
1384 // allocated bytes for EAX.
1385 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(NumBytes-4);
1386 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32))
1387 .addExternalSymbol("_alloca");
1389 MachineInstr *MI = addRegOffset(BuildMI(TII.get(X86::MOV32rm),X86::EAX),
1390 StackPtr, NumBytes-4);
1391 MBB.insert(MBBI, MI);
1394 // If there is an ADD32ri or SUB32ri of ESP immediately after this
1395 // instruction, merge the two instructions.
1396 if (MBBI != MBB.end()) {
1397 MachineBasicBlock::iterator NI = next(MBBI);
1398 unsigned Opc = MBBI->getOpcode();
1399 if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
1400 Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
1401 MBBI->getOperand(0).getReg() == StackPtr) {
1402 NumBytes -= MBBI->getOperand(2).getImm();
1405 } else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 ||
1406 Opc == X86::SUB32ri || Opc == X86::SUB32ri8) &&
1407 MBBI->getOperand(0).getReg() == StackPtr) {
1408 NumBytes += MBBI->getOperand(2).getImm();
1415 emitSPUpdate(MBB, MBBI, StackPtr, -(int64_t)NumBytes, Is64Bit, TII);
1419 if (MMI && MMI->needsFrameInfo()) {
1420 std::vector<MachineMove> &Moves = MMI->getFrameMoves();
1421 const TargetData *TD = MF.getTarget().getTargetData();
1423 // Calculate amount of bytes used for return address storing
1425 (MF.getTarget().getFrameInfo()->getStackGrowthDirection() ==
1426 TargetFrameInfo::StackGrowsUp ?
1427 TD->getPointerSize() : -TD->getPointerSize());
1430 // Show update of SP.
1433 MachineLocation SPDst(MachineLocation::VirtualFP);
1434 MachineLocation SPSrc(MachineLocation::VirtualFP, 2*stackGrowth);
1435 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1437 MachineLocation SPDst(MachineLocation::VirtualFP);
1438 MachineLocation SPSrc(MachineLocation::VirtualFP, -StackSize+stackGrowth);
1439 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1442 //FIXME: Verify & implement for FP
1443 MachineLocation SPDst(StackPtr);
1444 MachineLocation SPSrc(StackPtr, stackGrowth);
1445 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1448 // Add callee saved registers to move list.
1449 const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
1451 // FIXME: This is dirty hack. The code itself is pretty mess right now.
1452 // It should be rewritten from scratch and generalized sometimes.
1454 // Determine maximum offset (minumum due to stack growth)
1455 int64_t MaxOffset = 0;
1456 for (unsigned I = 0, E = CSI.size(); I!=E; ++I)
1457 MaxOffset = std::min(MaxOffset,
1458 MFI->getObjectOffset(CSI[I].getFrameIdx()));
1460 // Calculate offsets
1461 for (unsigned I = 0, E = CSI.size(); I!=E; ++I) {
1462 int64_t Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
1463 unsigned Reg = CSI[I].getReg();
1464 Offset = (MaxOffset-Offset+3*stackGrowth);
1465 MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
1466 MachineLocation CSSrc(Reg);
1467 Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc));
1472 MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth);
1473 MachineLocation FPSrc(FramePtr);
1474 Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
1477 MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr);
1478 MachineLocation FPSrc(MachineLocation::VirtualFP);
1479 Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
1482 // If it's main() on Cygwin\Mingw32 we should align stack as well
1483 if (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
1484 Subtarget->isTargetCygMing()) {
1485 BuildMI(MBB, MBBI, TII.get(X86::AND32ri), X86::ESP)
1486 .addReg(X86::ESP).addImm(-Align);
1489 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(Align);
1490 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32)).addExternalSymbol("_alloca");
1494 void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
1495 MachineBasicBlock &MBB) const {
1496 const MachineFrameInfo *MFI = MF.getFrameInfo();
1497 const Function* Fn = MF.getFunction();
1498 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
1499 const X86Subtarget* Subtarget = &MF.getTarget().getSubtarget<X86Subtarget>();
1500 MachineBasicBlock::iterator MBBI = prior(MBB.end());
1501 unsigned RetOpcode = MBBI->getOpcode();
1503 switch (RetOpcode) {
1506 case X86::EH_RETURN:
1509 case X86::TAILJMPm: break; // These are ok
1511 assert(0 && "Can only insert epilog into returning blocks");
1514 // Get the number of bytes to allocate from the FrameInfo
1515 uint64_t StackSize = MFI->getStackSize();
1516 unsigned CSSize = X86FI->getCalleeSavedFrameSize();
1517 uint64_t NumBytes = StackSize - CSSize;
1521 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::POP64r : X86::POP32r), FramePtr);
1522 NumBytes -= SlotSize;
1525 // Skip the callee-saved pop instructions.
1526 while (MBBI != MBB.begin()) {
1527 MachineBasicBlock::iterator PI = prior(MBBI);
1528 unsigned Opc = PI->getOpcode();
1529 if (Opc != X86::POP32r && Opc != X86::POP64r && !TII.isTerminatorInstr(Opc))
1534 if (NumBytes || MFI->hasVarSizedObjects()) {
1535 // If there is an ADD32ri or SUB32ri of ESP immediately before this
1536 // instruction, merge the two instructions.
1537 if (MBBI != MBB.begin()) {
1538 MachineBasicBlock::iterator PI = prior(MBBI);
1539 unsigned Opc = PI->getOpcode();
1540 if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
1541 Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
1542 PI->getOperand(0).getReg() == StackPtr) {
1543 NumBytes += PI->getOperand(2).getImm();
1545 } else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 ||
1546 Opc == X86::SUB32ri || Opc == X86::SUB32ri8) &&
1547 PI->getOperand(0).getReg() == StackPtr) {
1548 NumBytes -= PI->getOperand(2).getImm();
1554 // If dynamic alloca is used, then reset esp to point to the last
1555 // callee-saved slot before popping them off!
1556 // Also, if it's main() on Cygwin/Mingw32 we aligned stack in the prologue, - revert
1557 // stack changes back. Note: we're assuming, that frame pointer was forced
1559 if (MFI->hasVarSizedObjects() ||
1560 (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
1561 Subtarget->isTargetCygMing())) {
1562 unsigned Opc = Is64Bit ? X86::LEA64r : X86::LEA32r;
1564 MachineInstr *MI = addRegOffset(BuildMI(TII.get(Opc), StackPtr),
1566 MBB.insert(MBBI, MI);
1568 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
1574 // adjust stack pointer back: ESP += numbytes
1576 emitSPUpdate(MBB, MBBI, StackPtr, NumBytes, Is64Bit, TII);
1578 // We're returning from function via eh_return.
1579 if (RetOpcode == X86::EH_RETURN) {
1580 MBBI = prior(MBB.end());
1581 MachineOperand &DestAddr = MBBI->getOperand(0);
1582 assert(DestAddr.isRegister() && "Offset should be in register!");
1583 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
1584 addReg(DestAddr.getReg());
1588 unsigned X86RegisterInfo::getRARegister() const {
1590 return X86::RIP; // Should have dwarf #16
1592 return X86::EIP; // Should have dwarf #8
1595 unsigned X86RegisterInfo::getFrameRegister(MachineFunction &MF) const {
1596 return hasFP(MF) ? FramePtr : StackPtr;
1599 void X86RegisterInfo::getInitialFrameState(std::vector<MachineMove> &Moves)
1601 // Calculate amount of bytes used for return address storing
1602 int stackGrowth = (Is64Bit ? -8 : -4);
1604 // Initial state of the frame pointer is esp+4.
1605 MachineLocation Dst(MachineLocation::VirtualFP);
1606 MachineLocation Src(StackPtr, stackGrowth);
1607 Moves.push_back(MachineMove(0, Dst, Src));
1609 // Add return address to move list
1610 MachineLocation CSDst(StackPtr, stackGrowth);
1611 MachineLocation CSSrc(getRARegister());
1612 Moves.push_back(MachineMove(0, CSDst, CSSrc));
1615 unsigned X86RegisterInfo::getEHExceptionRegister() const {
1616 assert(0 && "What is the exception register");
1620 unsigned X86RegisterInfo::getEHHandlerRegister() const {
1621 assert(0 && "What is the exception handler register");
1626 unsigned getX86SubSuperRegister(unsigned Reg, MVT::ValueType VT, bool High) {
1628 default: return Reg;
1633 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1635 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1637 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1639 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1645 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1647 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1649 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1651 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1653 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1655 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1657 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1659 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1661 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1663 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1665 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1667 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1669 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1671 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1673 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1675 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1681 default: return Reg;
1682 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1684 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1686 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1688 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1690 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1692 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1694 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1696 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1698 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1700 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1702 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1704 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1706 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1708 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1710 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1712 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1717 default: return Reg;
1718 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1720 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1722 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1724 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1726 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1728 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1730 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1732 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1734 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1736 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1738 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1740 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1742 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1744 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1746 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1748 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1753 default: return Reg;
1754 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1756 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1758 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1760 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1762 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1764 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1766 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1768 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1770 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1772 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1774 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1776 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1778 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1780 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1782 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1784 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1793 #include "X86GenRegisterInfo.inc"