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 cerr << "Not yet supported!";
242 if (DestRC == &X86::GR64RegClass) {
244 } else if (DestRC == &X86::GR32RegClass) {
246 } else if (DestRC == &X86::GR16RegClass) {
248 } else if (DestRC == &X86::GR8RegClass) {
250 } else if (DestRC == &X86::GR32_RegClass) {
252 } else if (DestRC == &X86::GR16_RegClass) {
254 } else if (DestRC == &X86::RFP32RegClass) {
255 Opc = X86::MOV_Fp3232;
256 } else if (DestRC == &X86::RFP64RegClass || DestRC == &X86::RSTRegClass) {
257 Opc = X86::MOV_Fp6464;
258 } else if (DestRC == &X86::RFP80RegClass) {
259 Opc = X86::MOV_Fp8080;
260 } else if (DestRC == &X86::FR32RegClass) {
261 Opc = X86::FsMOVAPSrr;
262 } else if (DestRC == &X86::FR64RegClass) {
263 Opc = X86::FsMOVAPDrr;
264 } else if (DestRC == &X86::VR128RegClass) {
266 } else if (DestRC == &X86::VR64RegClass) {
267 Opc = X86::MMX_MOVQ64rr;
269 assert(0 && "Unknown regclass");
272 BuildMI(MBB, MI, TII.get(Opc), DestReg).addReg(SrcReg);
276 void X86RegisterInfo::reMaterialize(MachineBasicBlock &MBB,
277 MachineBasicBlock::iterator I,
279 const MachineInstr *Orig) const {
280 // MOV32r0 etc. are implemented with xor which clobbers condition code.
281 // Re-materialize them as movri instructions to avoid side effects.
282 switch (Orig->getOpcode()) {
284 BuildMI(MBB, I, TII.get(X86::MOV8ri), DestReg).addImm(0);
287 BuildMI(MBB, I, TII.get(X86::MOV16ri), DestReg).addImm(0);
290 BuildMI(MBB, I, TII.get(X86::MOV32ri), DestReg).addImm(0);
293 BuildMI(MBB, I, TII.get(X86::MOV64ri32), DestReg).addImm(0);
296 MachineInstr *MI = Orig->clone();
297 MI->getOperand(0).setReg(DestReg);
304 static const MachineInstrBuilder &FuseInstrAddOperand(MachineInstrBuilder &MIB,
305 MachineOperand &MO) {
307 MIB = MIB.addReg(MO.getReg(), MO.isDef(), MO.isImplicit());
308 else if (MO.isImmediate())
309 MIB = MIB.addImm(MO.getImm());
310 else if (MO.isFrameIndex())
311 MIB = MIB.addFrameIndex(MO.getFrameIndex());
312 else if (MO.isGlobalAddress())
313 MIB = MIB.addGlobalAddress(MO.getGlobal(), MO.getOffset());
314 else if (MO.isConstantPoolIndex())
315 MIB = MIB.addConstantPoolIndex(MO.getConstantPoolIndex(), MO.getOffset());
316 else if (MO.isJumpTableIndex())
317 MIB = MIB.addJumpTableIndex(MO.getJumpTableIndex());
318 else if (MO.isExternalSymbol())
319 MIB = MIB.addExternalSymbol(MO.getSymbolName());
321 assert(0 && "Unknown operand for FuseInst!");
326 static MachineInstr *FuseTwoAddrInst(unsigned Opcode,
327 SmallVector<MachineOperand,4> &MOs,
328 MachineInstr *MI, const TargetInstrInfo &TII) {
329 unsigned NumOps = TII.getNumOperands(MI->getOpcode())-2;
331 // Create the base instruction with the memory operand as the first part.
332 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
333 unsigned NumAddrOps = MOs.size();
334 for (unsigned i = 0; i != NumAddrOps; ++i)
335 MIB = FuseInstrAddOperand(MIB, MOs[i]);
336 if (NumAddrOps < 4) // FrameIndex only
337 MIB.addImm(1).addReg(0).addImm(0);
339 // Loop over the rest of the ri operands, converting them over.
340 for (unsigned i = 0; i != NumOps; ++i) {
341 MachineOperand &MO = MI->getOperand(i+2);
342 MIB = FuseInstrAddOperand(MIB, MO);
347 static MachineInstr *FuseInst(unsigned Opcode, unsigned OpNo,
348 SmallVector<MachineOperand,4> &MOs,
349 MachineInstr *MI, const TargetInstrInfo &TII) {
350 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
352 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
353 MachineOperand &MO = MI->getOperand(i);
355 assert(MO.isRegister() && "Expected to fold into reg operand!");
356 unsigned NumAddrOps = MOs.size();
357 for (unsigned i = 0; i != NumAddrOps; ++i)
358 MIB = FuseInstrAddOperand(MIB, MOs[i]);
359 if (NumAddrOps < 4) // FrameIndex only
360 MIB.addImm(1).addReg(0).addImm(0);
362 MIB = FuseInstrAddOperand(MIB, MO);
368 static MachineInstr *MakeM0Inst(const TargetInstrInfo &TII, unsigned Opcode,
369 SmallVector<MachineOperand,4> &MOs,
371 MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
373 unsigned NumAddrOps = MOs.size();
374 for (unsigned i = 0; i != NumAddrOps; ++i)
375 MIB = FuseInstrAddOperand(MIB, MOs[i]);
376 if (NumAddrOps < 4) // FrameIndex only
377 MIB.addImm(1).addReg(0).addImm(0);
378 return MIB.addImm(0);
382 //===----------------------------------------------------------------------===//
383 // Efficient Lookup Table Support
384 //===----------------------------------------------------------------------===//
387 /// TableEntry - Maps the 'from' opcode to a fused form of the 'to' opcode.
390 unsigned from; // Original opcode.
391 unsigned to; // New opcode.
393 // less operators used by STL search.
394 bool operator<(const TableEntry &TE) const { return from < TE.from; }
395 friend bool operator<(const TableEntry &TE, unsigned V) {
398 friend bool operator<(unsigned V, const TableEntry &TE) {
404 /// TableIsSorted - Return true if the table is in 'from' opcode order.
406 static bool TableIsSorted(const TableEntry *Table, unsigned NumEntries) {
407 for (unsigned i = 1; i != NumEntries; ++i)
408 if (!(Table[i-1] < Table[i])) {
409 cerr << "Entries out of order " << Table[i-1].from
410 << " " << Table[i].from << "\n";
416 /// TableLookup - Return the table entry matching the specified opcode.
417 /// Otherwise return NULL.
418 static const TableEntry *TableLookup(const TableEntry *Table, unsigned N,
420 const TableEntry *I = std::lower_bound(Table, Table+N, Opcode);
421 if (I != Table+N && I->from == Opcode)
427 #define ASSERT_SORTED(TABLE)
429 #define ASSERT_SORTED(TABLE) \
430 { static bool TABLE##Checked = false; \
431 if (!TABLE##Checked) { \
432 assert(TableIsSorted(TABLE, array_lengthof(TABLE)) && \
433 "All lookup tables must be sorted for efficient access!"); \
434 TABLE##Checked = true; \
440 X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned i,
441 SmallVector<MachineOperand,4> &MOs) const {
442 // Table (and size) to search
443 const TableEntry *OpcodeTablePtr = NULL;
444 unsigned OpcodeTableSize = 0;
445 bool isTwoAddrFold = false;
446 unsigned NumOps = TII.getNumOperands(MI->getOpcode());
447 bool isTwoAddr = NumOps > 1 &&
448 MI->getInstrDescriptor()->getOperandConstraint(1, TOI::TIED_TO) != -1;
450 MachineInstr *NewMI = NULL;
451 // Folding a memory location into the two-address part of a two-address
452 // instruction is different than folding it other places. It requires
453 // replacing the *two* registers with the memory location.
454 if (isTwoAddr && NumOps >= 2 && i < 2 &&
455 MI->getOperand(0).isRegister() &&
456 MI->getOperand(1).isRegister() &&
457 MI->getOperand(0).getReg() == MI->getOperand(1).getReg()) {
458 static const TableEntry OpcodeTable[] = {
459 { X86::ADC32ri, X86::ADC32mi },
460 { X86::ADC32ri8, X86::ADC32mi8 },
461 { X86::ADC32rr, X86::ADC32mr },
462 { X86::ADC64ri32, X86::ADC64mi32 },
463 { X86::ADC64ri8, X86::ADC64mi8 },
464 { X86::ADC64rr, X86::ADC64mr },
465 { X86::ADD16ri, X86::ADD16mi },
466 { X86::ADD16ri8, X86::ADD16mi8 },
467 { X86::ADD16rr, X86::ADD16mr },
468 { X86::ADD32ri, X86::ADD32mi },
469 { X86::ADD32ri8, X86::ADD32mi8 },
470 { X86::ADD32rr, X86::ADD32mr },
471 { X86::ADD64ri32, X86::ADD64mi32 },
472 { X86::ADD64ri8, X86::ADD64mi8 },
473 { X86::ADD64rr, X86::ADD64mr },
474 { X86::ADD8ri, X86::ADD8mi },
475 { X86::ADD8rr, X86::ADD8mr },
476 { X86::AND16ri, X86::AND16mi },
477 { X86::AND16ri8, X86::AND16mi8 },
478 { X86::AND16rr, X86::AND16mr },
479 { X86::AND32ri, X86::AND32mi },
480 { X86::AND32ri8, X86::AND32mi8 },
481 { X86::AND32rr, X86::AND32mr },
482 { X86::AND64ri32, X86::AND64mi32 },
483 { X86::AND64ri8, X86::AND64mi8 },
484 { X86::AND64rr, X86::AND64mr },
485 { X86::AND8ri, X86::AND8mi },
486 { X86::AND8rr, X86::AND8mr },
487 { X86::DEC16r, X86::DEC16m },
488 { X86::DEC32r, X86::DEC32m },
489 { X86::DEC64_16r, X86::DEC16m },
490 { X86::DEC64_32r, X86::DEC32m },
491 { X86::DEC64r, X86::DEC64m },
492 { X86::DEC8r, X86::DEC8m },
493 { X86::INC16r, X86::INC16m },
494 { X86::INC32r, X86::INC32m },
495 { X86::INC64_16r, X86::INC16m },
496 { X86::INC64_32r, X86::INC32m },
497 { X86::INC64r, X86::INC64m },
498 { X86::INC8r, X86::INC8m },
499 { X86::NEG16r, X86::NEG16m },
500 { X86::NEG32r, X86::NEG32m },
501 { X86::NEG64r, X86::NEG64m },
502 { X86::NEG8r, X86::NEG8m },
503 { X86::NOT16r, X86::NOT16m },
504 { X86::NOT32r, X86::NOT32m },
505 { X86::NOT64r, X86::NOT64m },
506 { X86::NOT8r, X86::NOT8m },
507 { X86::OR16ri, X86::OR16mi },
508 { X86::OR16ri8, X86::OR16mi8 },
509 { X86::OR16rr, X86::OR16mr },
510 { X86::OR32ri, X86::OR32mi },
511 { X86::OR32ri8, X86::OR32mi8 },
512 { X86::OR32rr, X86::OR32mr },
513 { X86::OR64ri32, X86::OR64mi32 },
514 { X86::OR64ri8, X86::OR64mi8 },
515 { X86::OR64rr, X86::OR64mr },
516 { X86::OR8ri, X86::OR8mi },
517 { X86::OR8rr, X86::OR8mr },
518 { X86::ROL16r1, X86::ROL16m1 },
519 { X86::ROL16rCL, X86::ROL16mCL },
520 { X86::ROL16ri, X86::ROL16mi },
521 { X86::ROL32r1, X86::ROL32m1 },
522 { X86::ROL32rCL, X86::ROL32mCL },
523 { X86::ROL32ri, X86::ROL32mi },
524 { X86::ROL64r1, X86::ROL64m1 },
525 { X86::ROL64rCL, X86::ROL64mCL },
526 { X86::ROL64ri, X86::ROL64mi },
527 { X86::ROL8r1, X86::ROL8m1 },
528 { X86::ROL8rCL, X86::ROL8mCL },
529 { X86::ROL8ri, X86::ROL8mi },
530 { X86::ROR16r1, X86::ROR16m1 },
531 { X86::ROR16rCL, X86::ROR16mCL },
532 { X86::ROR16ri, X86::ROR16mi },
533 { X86::ROR32r1, X86::ROR32m1 },
534 { X86::ROR32rCL, X86::ROR32mCL },
535 { X86::ROR32ri, X86::ROR32mi },
536 { X86::ROR64r1, X86::ROR64m1 },
537 { X86::ROR64rCL, X86::ROR64mCL },
538 { X86::ROR64ri, X86::ROR64mi },
539 { X86::ROR8r1, X86::ROR8m1 },
540 { X86::ROR8rCL, X86::ROR8mCL },
541 { X86::ROR8ri, X86::ROR8mi },
542 { X86::SAR16r1, X86::SAR16m1 },
543 { X86::SAR16rCL, X86::SAR16mCL },
544 { X86::SAR16ri, X86::SAR16mi },
545 { X86::SAR32r1, X86::SAR32m1 },
546 { X86::SAR32rCL, X86::SAR32mCL },
547 { X86::SAR32ri, X86::SAR32mi },
548 { X86::SAR64r1, X86::SAR64m1 },
549 { X86::SAR64rCL, X86::SAR64mCL },
550 { X86::SAR64ri, X86::SAR64mi },
551 { X86::SAR8r1, X86::SAR8m1 },
552 { X86::SAR8rCL, X86::SAR8mCL },
553 { X86::SAR8ri, X86::SAR8mi },
554 { X86::SBB32ri, X86::SBB32mi },
555 { X86::SBB32ri8, X86::SBB32mi8 },
556 { X86::SBB32rr, X86::SBB32mr },
557 { X86::SBB64ri32, X86::SBB64mi32 },
558 { X86::SBB64ri8, X86::SBB64mi8 },
559 { X86::SBB64rr, X86::SBB64mr },
560 { X86::SHL16r1, X86::SHL16m1 },
561 { X86::SHL16rCL, X86::SHL16mCL },
562 { X86::SHL16ri, X86::SHL16mi },
563 { X86::SHL32r1, X86::SHL32m1 },
564 { X86::SHL32rCL, X86::SHL32mCL },
565 { X86::SHL32ri, X86::SHL32mi },
566 { X86::SHL64r1, X86::SHL64m1 },
567 { X86::SHL64rCL, X86::SHL64mCL },
568 { X86::SHL64ri, X86::SHL64mi },
569 { X86::SHL8r1, X86::SHL8m1 },
570 { X86::SHL8rCL, X86::SHL8mCL },
571 { X86::SHL8ri, X86::SHL8mi },
572 { X86::SHLD16rrCL, X86::SHLD16mrCL },
573 { X86::SHLD16rri8, X86::SHLD16mri8 },
574 { X86::SHLD32rrCL, X86::SHLD32mrCL },
575 { X86::SHLD32rri8, X86::SHLD32mri8 },
576 { X86::SHLD64rrCL, X86::SHLD64mrCL },
577 { X86::SHLD64rri8, X86::SHLD64mri8 },
578 { X86::SHR16r1, X86::SHR16m1 },
579 { X86::SHR16rCL, X86::SHR16mCL },
580 { X86::SHR16ri, X86::SHR16mi },
581 { X86::SHR32r1, X86::SHR32m1 },
582 { X86::SHR32rCL, X86::SHR32mCL },
583 { X86::SHR32ri, X86::SHR32mi },
584 { X86::SHR64r1, X86::SHR64m1 },
585 { X86::SHR64rCL, X86::SHR64mCL },
586 { X86::SHR64ri, X86::SHR64mi },
587 { X86::SHR8r1, X86::SHR8m1 },
588 { X86::SHR8rCL, X86::SHR8mCL },
589 { X86::SHR8ri, X86::SHR8mi },
590 { X86::SHRD16rrCL, X86::SHRD16mrCL },
591 { X86::SHRD16rri8, X86::SHRD16mri8 },
592 { X86::SHRD32rrCL, X86::SHRD32mrCL },
593 { X86::SHRD32rri8, X86::SHRD32mri8 },
594 { X86::SHRD64rrCL, X86::SHRD64mrCL },
595 { X86::SHRD64rri8, X86::SHRD64mri8 },
596 { X86::SUB16ri, X86::SUB16mi },
597 { X86::SUB16ri8, X86::SUB16mi8 },
598 { X86::SUB16rr, X86::SUB16mr },
599 { X86::SUB32ri, X86::SUB32mi },
600 { X86::SUB32ri8, X86::SUB32mi8 },
601 { X86::SUB32rr, X86::SUB32mr },
602 { X86::SUB64ri32, X86::SUB64mi32 },
603 { X86::SUB64ri8, X86::SUB64mi8 },
604 { X86::SUB64rr, X86::SUB64mr },
605 { X86::SUB8ri, X86::SUB8mi },
606 { X86::SUB8rr, X86::SUB8mr },
607 { X86::XOR16ri, X86::XOR16mi },
608 { X86::XOR16ri8, X86::XOR16mi8 },
609 { X86::XOR16rr, X86::XOR16mr },
610 { X86::XOR32ri, X86::XOR32mi },
611 { X86::XOR32ri8, X86::XOR32mi8 },
612 { X86::XOR32rr, X86::XOR32mr },
613 { X86::XOR64ri32, X86::XOR64mi32 },
614 { X86::XOR64ri8, X86::XOR64mi8 },
615 { X86::XOR64rr, X86::XOR64mr },
616 { X86::XOR8ri, X86::XOR8mi },
617 { X86::XOR8rr, X86::XOR8mr }
619 ASSERT_SORTED(OpcodeTable);
620 OpcodeTablePtr = OpcodeTable;
621 OpcodeTableSize = array_lengthof(OpcodeTable);
622 isTwoAddrFold = true;
623 } else if (i == 0) { // If operand 0
624 if (MI->getOpcode() == X86::MOV16r0)
625 NewMI = MakeM0Inst(TII, X86::MOV16mi, MOs, MI);
626 else if (MI->getOpcode() == X86::MOV32r0)
627 NewMI = MakeM0Inst(TII, X86::MOV32mi, MOs, MI);
628 else if (MI->getOpcode() == X86::MOV64r0)
629 NewMI = MakeM0Inst(TII, X86::MOV64mi32, MOs, MI);
630 else if (MI->getOpcode() == X86::MOV8r0)
631 NewMI = MakeM0Inst(TII, X86::MOV8mi, MOs, MI);
633 NewMI->copyKillDeadInfo(MI);
637 static const TableEntry OpcodeTable[] = {
638 { X86::CALL32r, X86::CALL32m },
639 { X86::CALL64r, X86::CALL64m },
640 { X86::CMP16ri, X86::CMP16mi },
641 { X86::CMP16ri8, X86::CMP16mi8 },
642 { X86::CMP32ri, X86::CMP32mi },
643 { X86::CMP32ri8, X86::CMP32mi8 },
644 { X86::CMP64ri32, X86::CMP64mi32 },
645 { X86::CMP64ri8, X86::CMP64mi8 },
646 { X86::CMP8ri, X86::CMP8mi },
647 { X86::DIV16r, X86::DIV16m },
648 { X86::DIV32r, X86::DIV32m },
649 { X86::DIV64r, X86::DIV64m },
650 { X86::DIV8r, X86::DIV8m },
651 { X86::FsMOVAPDrr, X86::MOVSDmr },
652 { X86::FsMOVAPSrr, X86::MOVSSmr },
653 { X86::IDIV16r, X86::IDIV16m },
654 { X86::IDIV32r, X86::IDIV32m },
655 { X86::IDIV64r, X86::IDIV64m },
656 { X86::IDIV8r, X86::IDIV8m },
657 { X86::IMUL16r, X86::IMUL16m },
658 { X86::IMUL32r, X86::IMUL32m },
659 { X86::IMUL64r, X86::IMUL64m },
660 { X86::IMUL8r, X86::IMUL8m },
661 { X86::JMP32r, X86::JMP32m },
662 { X86::JMP64r, X86::JMP64m },
663 { X86::MOV16ri, X86::MOV16mi },
664 { X86::MOV16rr, X86::MOV16mr },
665 { X86::MOV32ri, X86::MOV32mi },
666 { X86::MOV32rr, X86::MOV32mr },
667 { X86::MOV64ri32, X86::MOV64mi32 },
668 { X86::MOV64rr, X86::MOV64mr },
669 { X86::MOV8ri, X86::MOV8mi },
670 { X86::MOV8rr, X86::MOV8mr },
671 { X86::MOVAPDrr, X86::MOVAPDmr },
672 { X86::MOVAPSrr, X86::MOVAPSmr },
673 { X86::MOVPDI2DIrr, X86::MOVPDI2DImr },
674 { X86::MOVPQIto64rr,X86::MOVPQIto64mr },
675 { X86::MOVPS2SSrr, X86::MOVPS2SSmr },
676 { X86::MOVSDrr, X86::MOVSDmr },
677 { X86::MOVSDto64rr, X86::MOVSDto64mr },
678 { X86::MOVSS2DIrr, X86::MOVSS2DImr },
679 { X86::MOVSSrr, X86::MOVSSmr },
680 { X86::MOVUPDrr, X86::MOVUPDmr },
681 { X86::MOVUPSrr, X86::MOVUPSmr },
682 { X86::MUL16r, X86::MUL16m },
683 { X86::MUL32r, X86::MUL32m },
684 { X86::MUL64r, X86::MUL64m },
685 { X86::MUL8r, X86::MUL8m },
688 { X86::NEW_CMP16ri, X86::NEW_CMP16mi },
689 { X86::NEW_CMP16ri8,X86::NEW_CMP16mi8 },
690 { X86::NEW_CMP32ri, X86::NEW_CMP32mi },
691 { X86::NEW_CMP32ri8,X86::NEW_CMP32mi8 },
692 { X86::NEW_CMP64ri32,X86::NEW_CMP64mi32 },
693 { X86::NEW_CMP64ri8,X86::NEW_CMP64mi8 },
694 { X86::NEW_CMP8ri, X86::NEW_CMP8mi },
695 { X86::NEW_SETAEr, X86::NEW_SETAEm },
696 { X86::NEW_SETAr, X86::NEW_SETAm },
697 { X86::NEW_SETBEr, X86::NEW_SETBEm },
698 { X86::NEW_SETBr, X86::NEW_SETBm },
699 { X86::NEW_SETEr, X86::NEW_SETEm },
700 { X86::NEW_SETGEr, X86::NEW_SETGEm },
701 { X86::NEW_SETGr, X86::NEW_SETGm },
702 { X86::NEW_SETLEr, X86::NEW_SETLEm },
703 { X86::NEW_SETLr, X86::NEW_SETLm },
704 { X86::NEW_SETNEr, X86::NEW_SETNEm },
705 { X86::NEW_SETNPr, X86::NEW_SETNPm },
706 { X86::NEW_SETNSr, X86::NEW_SETNSm },
707 { X86::NEW_SETPr, X86::NEW_SETPm },
708 { X86::NEW_SETSr, X86::NEW_SETSm },
709 { X86::NEW_TEST16ri,X86::NEW_TEST16mi },
710 { X86::NEW_TEST32ri,X86::NEW_TEST32mi },
711 { X86::NEW_TEST64ri32, X86::NEW_TEST64mi32 },
712 { X86::NEW_TEST8ri, X86::NEW_TEST8mi },
714 { X86::SETAEr, X86::SETAEm },
715 { X86::SETAr, X86::SETAm },
716 { X86::SETBEr, X86::SETBEm },
717 { X86::SETBr, X86::SETBm },
718 { X86::SETEr, X86::SETEm },
719 { X86::SETGEr, X86::SETGEm },
720 { X86::SETGr, X86::SETGm },
721 { X86::SETLEr, X86::SETLEm },
722 { X86::SETLr, X86::SETLm },
723 { X86::SETNEr, X86::SETNEm },
724 { X86::SETNPr, X86::SETNPm },
725 { X86::SETNSr, X86::SETNSm },
726 { X86::SETPr, X86::SETPm },
727 { X86::SETSr, X86::SETSm },
728 { X86::TAILJMPr, X86::TAILJMPm },
729 { X86::TEST16ri, X86::TEST16mi },
730 { X86::TEST32ri, X86::TEST32mi },
731 { X86::TEST64ri32, X86::TEST64mi32 },
732 { X86::TEST8ri, X86::TEST8mi },
733 { X86::XCHG16rr, X86::XCHG16mr },
734 { X86::XCHG32rr, X86::XCHG32mr },
735 { X86::XCHG64rr, X86::XCHG64mr },
736 { X86::XCHG8rr, X86::XCHG8mr }
739 ASSERT_SORTED(OpcodeTable);
740 OpcodeTablePtr = OpcodeTable;
741 OpcodeTableSize = array_lengthof(OpcodeTable);
743 static const TableEntry OpcodeTable[] = {
744 { X86::CMP16rr, X86::CMP16rm },
745 { X86::CMP32rr, X86::CMP32rm },
746 { X86::CMP64rr, X86::CMP64rm },
747 { X86::CMP8rr, X86::CMP8rm },
748 { X86::CVTSD2SSrr, X86::CVTSD2SSrm },
749 { X86::CVTSI2SD64rr, X86::CVTSI2SD64rm },
750 { X86::CVTSI2SDrr, X86::CVTSI2SDrm },
751 { X86::CVTSI2SS64rr, X86::CVTSI2SS64rm },
752 { X86::CVTSI2SSrr, X86::CVTSI2SSrm },
753 { X86::CVTSS2SDrr, X86::CVTSS2SDrm },
754 { X86::CVTTSD2SI64rr, X86::CVTTSD2SI64rm },
755 { X86::CVTTSD2SIrr, X86::CVTTSD2SIrm },
756 { X86::CVTTSS2SI64rr, X86::CVTTSS2SI64rm },
757 { X86::CVTTSS2SIrr, X86::CVTTSS2SIrm },
758 { X86::FsMOVAPDrr, X86::MOVSDrm },
759 { X86::FsMOVAPSrr, X86::MOVSSrm },
760 { X86::IMUL16rri, X86::IMUL16rmi },
761 { X86::IMUL16rri8, X86::IMUL16rmi8 },
762 { X86::IMUL32rri, X86::IMUL32rmi },
763 { X86::IMUL32rri8, X86::IMUL32rmi8 },
764 { X86::IMUL64rri32, X86::IMUL64rmi32 },
765 { X86::IMUL64rri8, X86::IMUL64rmi8 },
766 { X86::Int_CMPSDrr, X86::Int_CMPSDrm },
767 { X86::Int_CMPSSrr, X86::Int_CMPSSrm },
768 { X86::Int_COMISDrr, X86::Int_COMISDrm },
769 { X86::Int_COMISSrr, X86::Int_COMISSrm },
770 { X86::Int_CVTDQ2PDrr, X86::Int_CVTDQ2PDrm },
771 { X86::Int_CVTDQ2PSrr, X86::Int_CVTDQ2PSrm },
772 { X86::Int_CVTPD2DQrr, X86::Int_CVTPD2DQrm },
773 { X86::Int_CVTPD2PSrr, X86::Int_CVTPD2PSrm },
774 { X86::Int_CVTPS2DQrr, X86::Int_CVTPS2DQrm },
775 { X86::Int_CVTPS2PDrr, X86::Int_CVTPS2PDrm },
776 { X86::Int_CVTSD2SI64rr,X86::Int_CVTSD2SI64rm },
777 { X86::Int_CVTSD2SIrr, X86::Int_CVTSD2SIrm },
778 { X86::Int_CVTSD2SSrr, X86::Int_CVTSD2SSrm },
779 { X86::Int_CVTSI2SD64rr,X86::Int_CVTSI2SD64rm },
780 { X86::Int_CVTSI2SDrr, X86::Int_CVTSI2SDrm },
781 { X86::Int_CVTSI2SS64rr,X86::Int_CVTSI2SS64rm },
782 { X86::Int_CVTSI2SSrr, X86::Int_CVTSI2SSrm },
783 { X86::Int_CVTSS2SDrr, X86::Int_CVTSS2SDrm },
784 { X86::Int_CVTSS2SI64rr,X86::Int_CVTSS2SI64rm },
785 { X86::Int_CVTSS2SIrr, X86::Int_CVTSS2SIrm },
786 { X86::Int_CVTTPD2DQrr, X86::Int_CVTTPD2DQrm },
787 { X86::Int_CVTTPS2DQrr, X86::Int_CVTTPS2DQrm },
788 { X86::Int_CVTTSD2SI64rr,X86::Int_CVTTSD2SI64rm },
789 { X86::Int_CVTTSD2SIrr, X86::Int_CVTTSD2SIrm },
790 { X86::Int_CVTTSS2SI64rr,X86::Int_CVTTSS2SI64rm },
791 { X86::Int_CVTTSS2SIrr, X86::Int_CVTTSS2SIrm },
792 { X86::Int_UCOMISDrr, X86::Int_UCOMISDrm },
793 { X86::Int_UCOMISSrr, X86::Int_UCOMISSrm },
794 { X86::MOV16rr, X86::MOV16rm },
795 { X86::MOV32rr, X86::MOV32rm },
796 { X86::MOV64rr, X86::MOV64rm },
797 { X86::MOV64toPQIrr, X86::MOV64toPQIrm },
798 { X86::MOV64toSDrr, X86::MOV64toSDrm },
799 { X86::MOV8rr, X86::MOV8rm },
800 { X86::MOVAPDrr, X86::MOVAPDrm },
801 { X86::MOVAPSrr, X86::MOVAPSrm },
802 { X86::MOVDDUPrr, X86::MOVDDUPrm },
803 { X86::MOVDI2PDIrr, X86::MOVDI2PDIrm },
804 { X86::MOVDI2SSrr, X86::MOVDI2SSrm },
805 { X86::MOVSD2PDrr, X86::MOVSD2PDrm },
806 { X86::MOVSDrr, X86::MOVSDrm },
807 { X86::MOVSHDUPrr, X86::MOVSHDUPrm },
808 { X86::MOVSLDUPrr, X86::MOVSLDUPrm },
809 { X86::MOVSS2PSrr, X86::MOVSS2PSrm },
810 { X86::MOVSSrr, X86::MOVSSrm },
811 { X86::MOVSX16rr8, X86::MOVSX16rm8 },
812 { X86::MOVSX32rr16, X86::MOVSX32rm16 },
813 { X86::MOVSX32rr8, X86::MOVSX32rm8 },
814 { X86::MOVSX64rr16, X86::MOVSX64rm16 },
815 { X86::MOVSX64rr32, X86::MOVSX64rm32 },
816 { X86::MOVSX64rr8, X86::MOVSX64rm8 },
817 { X86::MOVUPDrr, X86::MOVUPDrm },
818 { X86::MOVUPSrr, X86::MOVUPSrm },
819 { X86::MOVZX16rr8, X86::MOVZX16rm8 },
820 { X86::MOVZX32rr16, X86::MOVZX32rm16 },
821 { X86::MOVZX32rr8, X86::MOVZX32rm8 },
822 { X86::MOVZX64rr16, X86::MOVZX64rm16 },
823 { X86::MOVZX64rr8, X86::MOVZX64rm8 },
826 { X86::NEW_CMP16rr, X86::NEW_CMP16rm },
827 { X86::NEW_CMP32rr, X86::NEW_CMP32rm },
828 { X86::NEW_CMP64rr, X86::NEW_CMP64rm },
829 { X86::NEW_CMP8rr, X86::NEW_CMP8rm },
830 { X86::NEW_Int_COMISDrr, X86::NEW_Int_COMISDrm },
831 { X86::NEW_Int_COMISSrr, X86::NEW_Int_COMISSrm },
832 { X86::NEW_Int_UCOMISDrr, X86::NEW_Int_UCOMISDrm },
833 { X86::NEW_Int_UCOMISSrr, X86::NEW_Int_UCOMISSrm },
834 { X86::NEW_TEST16rr, X86::NEW_TEST16rm },
835 { X86::NEW_TEST32rr, X86::NEW_TEST32rm },
836 { X86::NEW_TEST64rr, X86::NEW_TEST64rm },
837 { X86::NEW_TEST8rr, X86::NEW_TEST8rm },
838 { X86::NEW_UCOMISDrr, X86::NEW_UCOMISDrm },
839 { X86::NEW_UCOMISSrr, X86::NEW_UCOMISSrm },
841 { X86::PSHUFDri, X86::PSHUFDmi },
842 { X86::PSHUFHWri, X86::PSHUFHWmi },
843 { X86::PSHUFLWri, X86::PSHUFLWmi },
844 { X86::PsMOVZX64rr32, X86::PsMOVZX64rm32 },
845 { X86::RCPPSr, X86::RCPPSm },
846 { X86::RCPPSr_Int, X86::RCPPSm_Int },
847 { X86::RSQRTPSr, X86::RSQRTPSm },
848 { X86::RSQRTPSr_Int, X86::RSQRTPSm_Int },
849 { X86::RSQRTSSr, X86::RSQRTSSm },
850 { X86::RSQRTSSr_Int, X86::RSQRTSSm_Int },
851 { X86::SQRTPDr, X86::SQRTPDm },
852 { X86::SQRTPDr_Int, X86::SQRTPDm_Int },
853 { X86::SQRTPSr, X86::SQRTPSm },
854 { X86::SQRTPSr_Int, X86::SQRTPSm_Int },
855 { X86::SQRTSDr, X86::SQRTSDm },
856 { X86::SQRTSDr_Int, X86::SQRTSDm_Int },
857 { X86::SQRTSSr, X86::SQRTSSm },
858 { X86::SQRTSSr_Int, X86::SQRTSSm_Int },
859 { X86::TEST16rr, X86::TEST16rm },
860 { X86::TEST32rr, X86::TEST32rm },
861 { X86::TEST64rr, X86::TEST64rm },
862 { X86::TEST8rr, X86::TEST8rm },
863 // FIXME: TEST*rr EAX,EAX ---> CMP [mem], 0
864 { X86::UCOMISDrr, X86::UCOMISDrm },
865 { X86::UCOMISSrr, X86::UCOMISSrm },
866 { X86::XCHG16rr, X86::XCHG16rm },
867 { X86::XCHG32rr, X86::XCHG32rm },
868 { X86::XCHG64rr, X86::XCHG64rm },
869 { X86::XCHG8rr, X86::XCHG8rm }
872 ASSERT_SORTED(OpcodeTable);
873 OpcodeTablePtr = OpcodeTable;
874 OpcodeTableSize = array_lengthof(OpcodeTable);
876 static const TableEntry OpcodeTable[] = {
877 { X86::ADC32rr, X86::ADC32rm },
878 { X86::ADC64rr, X86::ADC64rm },
879 { X86::ADD16rr, X86::ADD16rm },
880 { X86::ADD32rr, X86::ADD32rm },
881 { X86::ADD64rr, X86::ADD64rm },
882 { X86::ADD8rr, X86::ADD8rm },
883 { X86::ADDPDrr, X86::ADDPDrm },
884 { X86::ADDPSrr, X86::ADDPSrm },
885 { X86::ADDSDrr, X86::ADDSDrm },
886 { X86::ADDSSrr, X86::ADDSSrm },
887 { X86::ADDSUBPDrr, X86::ADDSUBPDrm },
888 { X86::ADDSUBPSrr, X86::ADDSUBPSrm },
889 { X86::AND16rr, X86::AND16rm },
890 { X86::AND32rr, X86::AND32rm },
891 { X86::AND64rr, X86::AND64rm },
892 { X86::AND8rr, X86::AND8rm },
893 { X86::ANDNPDrr, X86::ANDNPDrm },
894 { X86::ANDNPSrr, X86::ANDNPSrm },
895 { X86::ANDPDrr, X86::ANDPDrm },
896 { X86::ANDPSrr, X86::ANDPSrm },
897 { X86::CMOVA16rr, X86::CMOVA16rm },
898 { X86::CMOVA32rr, X86::CMOVA32rm },
899 { X86::CMOVA64rr, X86::CMOVA64rm },
900 { X86::CMOVAE16rr, X86::CMOVAE16rm },
901 { X86::CMOVAE32rr, X86::CMOVAE32rm },
902 { X86::CMOVAE64rr, X86::CMOVAE64rm },
903 { X86::CMOVB16rr, X86::CMOVB16rm },
904 { X86::CMOVB32rr, X86::CMOVB32rm },
905 { X86::CMOVB64rr, X86::CMOVB64rm },
906 { X86::CMOVBE16rr, X86::CMOVBE16rm },
907 { X86::CMOVBE32rr, X86::CMOVBE32rm },
908 { X86::CMOVBE64rr, X86::CMOVBE64rm },
909 { X86::CMOVE16rr, X86::CMOVE16rm },
910 { X86::CMOVE32rr, X86::CMOVE32rm },
911 { X86::CMOVE64rr, X86::CMOVE64rm },
912 { X86::CMOVG16rr, X86::CMOVG16rm },
913 { X86::CMOVG32rr, X86::CMOVG32rm },
914 { X86::CMOVG64rr, X86::CMOVG64rm },
915 { X86::CMOVGE16rr, X86::CMOVGE16rm },
916 { X86::CMOVGE32rr, X86::CMOVGE32rm },
917 { X86::CMOVGE64rr, X86::CMOVGE64rm },
918 { X86::CMOVL16rr, X86::CMOVL16rm },
919 { X86::CMOVL32rr, X86::CMOVL32rm },
920 { X86::CMOVL64rr, X86::CMOVL64rm },
921 { X86::CMOVLE16rr, X86::CMOVLE16rm },
922 { X86::CMOVLE32rr, X86::CMOVLE32rm },
923 { X86::CMOVLE64rr, X86::CMOVLE64rm },
924 { X86::CMOVNE16rr, X86::CMOVNE16rm },
925 { X86::CMOVNE32rr, X86::CMOVNE32rm },
926 { X86::CMOVNE64rr, X86::CMOVNE64rm },
927 { X86::CMOVNP16rr, X86::CMOVNP16rm },
928 { X86::CMOVNP32rr, X86::CMOVNP32rm },
929 { X86::CMOVNP64rr, X86::CMOVNP64rm },
930 { X86::CMOVNS16rr, X86::CMOVNS16rm },
931 { X86::CMOVNS32rr, X86::CMOVNS32rm },
932 { X86::CMOVNS64rr, X86::CMOVNS64rm },
933 { X86::CMOVP16rr, X86::CMOVP16rm },
934 { X86::CMOVP32rr, X86::CMOVP32rm },
935 { X86::CMOVP64rr, X86::CMOVP64rm },
936 { X86::CMOVS16rr, X86::CMOVS16rm },
937 { X86::CMOVS32rr, X86::CMOVS32rm },
938 { X86::CMOVS64rr, X86::CMOVS64rm },
939 { X86::CMPPDrri, X86::CMPPDrmi },
940 { X86::CMPPSrri, X86::CMPPSrmi },
941 { X86::CMPSDrr, X86::CMPSDrm },
942 { X86::CMPSSrr, X86::CMPSSrm },
943 { X86::DIVPDrr, X86::DIVPDrm },
944 { X86::DIVPSrr, X86::DIVPSrm },
945 { X86::DIVSDrr, X86::DIVSDrm },
946 { X86::DIVSSrr, X86::DIVSSrm },
947 { X86::HADDPDrr, X86::HADDPDrm },
948 { X86::HADDPSrr, X86::HADDPSrm },
949 { X86::HSUBPDrr, X86::HSUBPDrm },
950 { X86::HSUBPSrr, X86::HSUBPSrm },
951 { X86::IMUL16rr, X86::IMUL16rm },
952 { X86::IMUL32rr, X86::IMUL32rm },
953 { X86::IMUL64rr, X86::IMUL64rm },
954 { X86::MAXPDrr, X86::MAXPDrm },
955 { X86::MAXPDrr_Int, X86::MAXPDrm_Int },
956 { X86::MAXPSrr, X86::MAXPSrm },
957 { X86::MAXPSrr_Int, X86::MAXPSrm_Int },
958 { X86::MAXSDrr, X86::MAXSDrm },
959 { X86::MAXSDrr_Int, X86::MAXSDrm_Int },
960 { X86::MAXSSrr, X86::MAXSSrm },
961 { X86::MAXSSrr_Int, X86::MAXSSrm_Int },
962 { X86::MINPDrr, X86::MINPDrm },
963 { X86::MINPDrr_Int, X86::MINPDrm_Int },
964 { X86::MINPSrr, X86::MINPSrm },
965 { X86::MINPSrr_Int, X86::MINPSrm_Int },
966 { X86::MINSDrr, X86::MINSDrm },
967 { X86::MINSDrr_Int, X86::MINSDrm_Int },
968 { X86::MINSSrr, X86::MINSSrm },
969 { X86::MINSSrr_Int, X86::MINSSrm_Int },
970 { X86::MULPDrr, X86::MULPDrm },
971 { X86::MULPSrr, X86::MULPSrm },
972 { X86::MULSDrr, X86::MULSDrm },
973 { X86::MULSSrr, X86::MULSSrm },
976 { X86::NEW_CMOVA16rr, X86::NEW_CMOVA16rm },
977 { X86::NEW_CMOVA32rr, X86::NEW_CMOVA32rm },
978 { X86::NEW_CMOVA64rr, X86::NEW_CMOVA64rm },
979 { X86::NEW_CMOVAE16rr, X86::NEW_CMOVAE16rm },
980 { X86::NEW_CMOVAE32rr, X86::NEW_CMOVAE32rm },
981 { X86::NEW_CMOVAE64rr, X86::NEW_CMOVAE64rm },
982 { X86::NEW_CMOVB16rr, X86::NEW_CMOVB16rm },
983 { X86::NEW_CMOVB32rr, X86::NEW_CMOVB32rm },
984 { X86::NEW_CMOVB64rr, X86::NEW_CMOVB64rm },
985 { X86::NEW_CMOVBE16rr, X86::NEW_CMOVBE16rm },
986 { X86::NEW_CMOVBE32rr, X86::NEW_CMOVBE32rm },
987 { X86::NEW_CMOVBE64rr, X86::NEW_CMOVBE64rm },
988 { X86::NEW_CMOVE16rr, X86::NEW_CMOVE16rm },
989 { X86::NEW_CMOVE32rr, X86::NEW_CMOVE32rm },
990 { X86::NEW_CMOVE64rr, X86::NEW_CMOVE64rm },
991 { X86::NEW_CMOVG16rr, X86::NEW_CMOVG16rm },
992 { X86::NEW_CMOVG32rr, X86::NEW_CMOVG32rm },
993 { X86::NEW_CMOVG64rr, X86::NEW_CMOVG64rm },
994 { X86::NEW_CMOVGE16rr, X86::NEW_CMOVGE16rm },
995 { X86::NEW_CMOVGE32rr, X86::NEW_CMOVGE32rm },
996 { X86::NEW_CMOVGE64rr, X86::NEW_CMOVGE64rm },
997 { X86::NEW_CMOVL16rr, X86::NEW_CMOVL16rm },
998 { X86::NEW_CMOVL32rr, X86::NEW_CMOVL32rm },
999 { X86::NEW_CMOVL64rr, X86::NEW_CMOVL64rm },
1000 { X86::NEW_CMOVLE16rr, X86::NEW_CMOVLE16rm },
1001 { X86::NEW_CMOVLE32rr, X86::NEW_CMOVLE32rm },
1002 { X86::NEW_CMOVLE64rr, X86::NEW_CMOVLE64rm },
1003 { X86::NEW_CMOVNE16rr, X86::NEW_CMOVNE16rm },
1004 { X86::NEW_CMOVNE32rr, X86::NEW_CMOVNE32rm },
1005 { X86::NEW_CMOVNE64rr, X86::NEW_CMOVNE64rm },
1006 { X86::NEW_CMOVNP16rr, X86::NEW_CMOVNP16rm },
1007 { X86::NEW_CMOVNP32rr, X86::NEW_CMOVNP32rm },
1008 { X86::NEW_CMOVNP64rr, X86::NEW_CMOVNP64rm },
1009 { X86::NEW_CMOVNS16rr, X86::NEW_CMOVNS16rm },
1010 { X86::NEW_CMOVNS32rr, X86::NEW_CMOVNS32rm },
1011 { X86::NEW_CMOVNS64rr, X86::NEW_CMOVNS64rm },
1012 { X86::NEW_CMOVP16rr, X86::NEW_CMOVP16rm },
1013 { X86::NEW_CMOVP32rr, X86::NEW_CMOVP32rm },
1014 { X86::NEW_CMOVP64rr, X86::NEW_CMOVP64rm },
1015 { X86::NEW_CMOVS16rr, X86::NEW_CMOVS16rm },
1016 { X86::NEW_CMOVS32rr, X86::NEW_CMOVS32rm },
1017 { X86::NEW_CMOVS64rr, X86::NEW_CMOVS64rm },
1019 { X86::OR16rr, X86::OR16rm },
1020 { X86::OR32rr, X86::OR32rm },
1021 { X86::OR64rr, X86::OR64rm },
1022 { X86::OR8rr, X86::OR8rm },
1023 { X86::ORPDrr, X86::ORPDrm },
1024 { X86::ORPSrr, X86::ORPSrm },
1025 { X86::PACKSSDWrr, X86::PACKSSDWrm },
1026 { X86::PACKSSWBrr, X86::PACKSSWBrm },
1027 { X86::PACKUSWBrr, X86::PACKUSWBrm },
1028 { X86::PADDBrr, X86::PADDBrm },
1029 { X86::PADDDrr, X86::PADDDrm },
1030 { X86::PADDQrr, X86::PADDQrm },
1031 { X86::PADDSBrr, X86::PADDSBrm },
1032 { X86::PADDSWrr, X86::PADDSWrm },
1033 { X86::PADDWrr, X86::PADDWrm },
1034 { X86::PANDNrr, X86::PANDNrm },
1035 { X86::PANDrr, X86::PANDrm },
1036 { X86::PAVGBrr, X86::PAVGBrm },
1037 { X86::PAVGWrr, X86::PAVGWrm },
1038 { X86::PCMPEQBrr, X86::PCMPEQBrm },
1039 { X86::PCMPEQDrr, X86::PCMPEQDrm },
1040 { X86::PCMPEQWrr, X86::PCMPEQWrm },
1041 { X86::PCMPGTBrr, X86::PCMPGTBrm },
1042 { X86::PCMPGTDrr, X86::PCMPGTDrm },
1043 { X86::PCMPGTWrr, X86::PCMPGTWrm },
1044 { X86::PINSRWrri, X86::PINSRWrmi },
1045 { X86::PMADDWDrr, X86::PMADDWDrm },
1046 { X86::PMAXSWrr, X86::PMAXSWrm },
1047 { X86::PMAXUBrr, X86::PMAXUBrm },
1048 { X86::PMINSWrr, X86::PMINSWrm },
1049 { X86::PMINUBrr, X86::PMINUBrm },
1050 { X86::PMULHUWrr, X86::PMULHUWrm },
1051 { X86::PMULHWrr, X86::PMULHWrm },
1052 { X86::PMULLWrr, X86::PMULLWrm },
1053 { X86::PMULUDQrr, X86::PMULUDQrm },
1054 { X86::PORrr, X86::PORrm },
1055 { X86::PSADBWrr, X86::PSADBWrm },
1056 { X86::PSLLDrr, X86::PSLLDrm },
1057 { X86::PSLLQrr, X86::PSLLQrm },
1058 { X86::PSLLWrr, X86::PSLLWrm },
1059 { X86::PSRADrr, X86::PSRADrm },
1060 { X86::PSRAWrr, X86::PSRAWrm },
1061 { X86::PSRLDrr, X86::PSRLDrm },
1062 { X86::PSRLQrr, X86::PSRLQrm },
1063 { X86::PSRLWrr, X86::PSRLWrm },
1064 { X86::PSUBBrr, X86::PSUBBrm },
1065 { X86::PSUBDrr, X86::PSUBDrm },
1066 { X86::PSUBSBrr, X86::PSUBSBrm },
1067 { X86::PSUBSWrr, X86::PSUBSWrm },
1068 { X86::PSUBWrr, X86::PSUBWrm },
1069 { X86::PUNPCKHBWrr, X86::PUNPCKHBWrm },
1070 { X86::PUNPCKHDQrr, X86::PUNPCKHDQrm },
1071 { X86::PUNPCKHQDQrr, X86::PUNPCKHQDQrm },
1072 { X86::PUNPCKHWDrr, X86::PUNPCKHWDrm },
1073 { X86::PUNPCKLBWrr, X86::PUNPCKLBWrm },
1074 { X86::PUNPCKLDQrr, X86::PUNPCKLDQrm },
1075 { X86::PUNPCKLQDQrr, X86::PUNPCKLQDQrm },
1076 { X86::PUNPCKLWDrr, X86::PUNPCKLWDrm },
1077 { X86::PXORrr, X86::PXORrm },
1078 { X86::SBB32rr, X86::SBB32rm },
1079 { X86::SBB64rr, X86::SBB64rm },
1080 { X86::SHUFPDrri, X86::SHUFPDrmi },
1081 { X86::SHUFPSrri, X86::SHUFPSrmi },
1082 { X86::SUB16rr, X86::SUB16rm },
1083 { X86::SUB32rr, X86::SUB32rm },
1084 { X86::SUB64rr, X86::SUB64rm },
1085 { X86::SUB8rr, X86::SUB8rm },
1086 { X86::SUBPDrr, X86::SUBPDrm },
1087 { X86::SUBPSrr, X86::SUBPSrm },
1088 { X86::SUBSDrr, X86::SUBSDrm },
1089 { X86::SUBSSrr, X86::SUBSSrm },
1090 // FIXME: TEST*rr -> swapped operand of TEST*mr.
1091 { X86::UNPCKHPDrr, X86::UNPCKHPDrm },
1092 { X86::UNPCKHPSrr, X86::UNPCKHPSrm },
1093 { X86::UNPCKLPDrr, X86::UNPCKLPDrm },
1094 { X86::UNPCKLPSrr, X86::UNPCKLPSrm },
1095 { X86::XOR16rr, X86::XOR16rm },
1096 { X86::XOR32rr, X86::XOR32rm },
1097 { X86::XOR64rr, X86::XOR64rm },
1098 { X86::XOR8rr, X86::XOR8rm },
1099 { X86::XORPDrr, X86::XORPDrm },
1100 { X86::XORPSrr, X86::XORPSrm }
1103 ASSERT_SORTED(OpcodeTable);
1104 OpcodeTablePtr = OpcodeTable;
1105 OpcodeTableSize = array_lengthof(OpcodeTable);
1108 // If table selected...
1109 if (OpcodeTablePtr) {
1110 // Find the Opcode to fuse
1111 unsigned fromOpcode = MI->getOpcode();
1112 // Lookup fromOpcode in table
1113 if (const TableEntry *Entry = TableLookup(OpcodeTablePtr, OpcodeTableSize,
1116 NewMI = FuseTwoAddrInst(Entry->to, MOs, MI, TII);
1118 NewMI = FuseInst(Entry->to, i, MOs, MI, TII);
1119 NewMI->copyKillDeadInfo(MI);
1125 if (PrintFailedFusing)
1126 cerr << "We failed to fuse ("
1127 << ((i == 1) ? "r" : "s") << "): " << *MI;
1132 MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
1133 int FrameIndex) const {
1134 // Check switch flag
1135 if (NoFusing) return NULL;
1136 SmallVector<MachineOperand,4> MOs;
1137 MOs.push_back(MachineOperand::CreateFrameIndex(FrameIndex));
1138 return foldMemoryOperand(MI, OpNum, MOs);
1141 MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
1142 MachineInstr *LoadMI) const {
1143 // Check switch flag
1144 if (NoFusing) return NULL;
1145 SmallVector<MachineOperand,4> MOs;
1146 unsigned NumOps = TII.getNumOperands(LoadMI->getOpcode());
1147 for (unsigned i = NumOps - 4; i != NumOps; ++i)
1148 MOs.push_back(LoadMI->getOperand(i));
1149 return foldMemoryOperand(MI, OpNum, MOs);
1153 X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
1154 static const unsigned CalleeSavedRegs32Bit[] = {
1155 X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
1158 static const unsigned CalleeSavedRegs32EHRet[] = {
1159 X86::EAX, X86::EDX, X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
1162 static const unsigned CalleeSavedRegs64Bit[] = {
1163 X86::RBX, X86::R12, X86::R13, X86::R14, X86::R15, X86::RBP, 0
1167 return CalleeSavedRegs64Bit;
1170 MachineFrameInfo *MFI = MF->getFrameInfo();
1171 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1172 if (MMI && MMI->callsEHReturn())
1173 return CalleeSavedRegs32EHRet;
1175 return CalleeSavedRegs32Bit;
1179 const TargetRegisterClass* const*
1180 X86RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
1181 static const TargetRegisterClass * const CalleeSavedRegClasses32Bit[] = {
1182 &X86::GR32RegClass, &X86::GR32RegClass,
1183 &X86::GR32RegClass, &X86::GR32RegClass, 0
1185 static const TargetRegisterClass * const CalleeSavedRegClasses32EHRet[] = {
1186 &X86::GR32RegClass, &X86::GR32RegClass,
1187 &X86::GR32RegClass, &X86::GR32RegClass,
1188 &X86::GR32RegClass, &X86::GR32RegClass, 0
1190 static const TargetRegisterClass * const CalleeSavedRegClasses64Bit[] = {
1191 &X86::GR64RegClass, &X86::GR64RegClass,
1192 &X86::GR64RegClass, &X86::GR64RegClass,
1193 &X86::GR64RegClass, &X86::GR64RegClass, 0
1197 return CalleeSavedRegClasses64Bit;
1200 MachineFrameInfo *MFI = MF->getFrameInfo();
1201 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1202 if (MMI && MMI->callsEHReturn())
1203 return CalleeSavedRegClasses32EHRet;
1205 return CalleeSavedRegClasses32Bit;
1210 BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
1211 BitVector Reserved(getNumRegs());
1212 Reserved.set(X86::RSP);
1213 Reserved.set(X86::ESP);
1214 Reserved.set(X86::SP);
1215 Reserved.set(X86::SPL);
1217 Reserved.set(X86::RBP);
1218 Reserved.set(X86::EBP);
1219 Reserved.set(X86::BP);
1220 Reserved.set(X86::BPL);
1225 //===----------------------------------------------------------------------===//
1226 // Stack Frame Processing methods
1227 //===----------------------------------------------------------------------===//
1229 // hasFP - Return true if the specified function should have a dedicated frame
1230 // pointer register. This is true if the function has variable sized allocas or
1231 // if frame pointer elimination is disabled.
1233 bool X86RegisterInfo::hasFP(const MachineFunction &MF) const {
1234 MachineFrameInfo *MFI = MF.getFrameInfo();
1235 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1237 return (NoFramePointerElim ||
1238 MFI->hasVarSizedObjects() ||
1239 MF.getInfo<X86MachineFunctionInfo>()->getForceFramePointer() ||
1240 (MMI && MMI->callsUnwindInit()));
1243 bool X86RegisterInfo::hasReservedCallFrame(MachineFunction &MF) const {
1244 return !MF.getFrameInfo()->hasVarSizedObjects();
1247 void X86RegisterInfo::
1248 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
1249 MachineBasicBlock::iterator I) const {
1250 if (!hasReservedCallFrame(MF)) {
1251 // If the stack pointer can be changed after prologue, turn the
1252 // adjcallstackup instruction into a 'sub ESP, <amt>' and the
1253 // adjcallstackdown instruction into 'add ESP, <amt>'
1254 // TODO: consider using push / pop instead of sub + store / add
1255 MachineInstr *Old = I;
1256 uint64_t Amount = Old->getOperand(0).getImm();
1258 // We need to keep the stack aligned properly. To do this, we round the
1259 // amount of space needed for the outgoing arguments up to the next
1260 // alignment boundary.
1261 unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment();
1262 Amount = (Amount+Align-1)/Align*Align;
1264 MachineInstr *New = 0;
1265 if (Old->getOpcode() == X86::ADJCALLSTACKDOWN) {
1266 New=BuildMI(TII.get(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri), StackPtr)
1267 .addReg(StackPtr).addImm(Amount);
1269 assert(Old->getOpcode() == X86::ADJCALLSTACKUP);
1270 // factor out the amount the callee already popped.
1271 uint64_t CalleeAmt = Old->getOperand(1).getImm();
1272 Amount -= CalleeAmt;
1274 unsigned Opc = (Amount < 128) ?
1275 (Is64Bit ? X86::ADD64ri8 : X86::ADD32ri8) :
1276 (Is64Bit ? X86::ADD64ri32 : X86::ADD32ri);
1277 New = BuildMI(TII.get(Opc), StackPtr)
1278 .addReg(StackPtr).addImm(Amount);
1282 // Replace the pseudo instruction with a new instruction...
1283 if (New) MBB.insert(I, New);
1285 } else if (I->getOpcode() == X86::ADJCALLSTACKUP) {
1286 // If we are performing frame pointer elimination and if the callee pops
1287 // something off the stack pointer, add it back. We do this until we have
1288 // more advanced stack pointer tracking ability.
1289 if (uint64_t CalleeAmt = I->getOperand(1).getImm()) {
1290 unsigned Opc = (CalleeAmt < 128) ?
1291 (Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
1292 (Is64Bit ? X86::SUB64ri32 : X86::SUB32ri);
1294 BuildMI(TII.get(Opc), StackPtr).addReg(StackPtr).addImm(CalleeAmt);
1302 void X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
1303 int SPAdj, RegScavenger *RS) const{
1304 assert(SPAdj == 0 && "Unexpected");
1307 MachineInstr &MI = *II;
1308 MachineFunction &MF = *MI.getParent()->getParent();
1309 while (!MI.getOperand(i).isFrameIndex()) {
1311 assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
1314 int FrameIndex = MI.getOperand(i).getFrameIndex();
1315 // This must be part of a four operand memory reference. Replace the
1316 // FrameIndex with base register with EBP. Add an offset to the offset.
1317 MI.getOperand(i).ChangeToRegister(hasFP(MF) ? FramePtr : StackPtr, false);
1319 // Now add the frame object offset to the offset from EBP.
1320 int64_t Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
1321 MI.getOperand(i+3).getImm()+SlotSize;
1324 Offset += MF.getFrameInfo()->getStackSize();
1326 Offset += SlotSize; // Skip the saved EBP
1328 MI.getOperand(i+3).ChangeToImmediate(Offset);
1332 X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF) const{
1334 // Create a frame entry for the EBP register that must be saved.
1335 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(SlotSize,
1336 (int)SlotSize * -2);
1337 assert(FrameIdx == MF.getFrameInfo()->getObjectIndexBegin() &&
1338 "Slot for EBP register must be last in order to be found!");
1342 /// emitSPUpdate - Emit a series of instructions to increment / decrement the
1343 /// stack pointer by a constant value.
1345 void emitSPUpdate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
1346 unsigned StackPtr, int64_t NumBytes, bool Is64Bit,
1347 const TargetInstrInfo &TII) {
1348 bool isSub = NumBytes < 0;
1349 uint64_t Offset = isSub ? -NumBytes : NumBytes;
1350 unsigned Opc = isSub
1352 (Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
1353 (Is64Bit ? X86::SUB64ri32 : X86::SUB32ri))
1355 (Is64Bit ? X86::ADD64ri8 : X86::ADD32ri8) :
1356 (Is64Bit ? X86::ADD64ri32 : X86::ADD32ri));
1357 uint64_t Chunk = (1LL << 31) - 1;
1360 uint64_t ThisVal = (Offset > Chunk) ? Chunk : Offset;
1361 BuildMI(MBB, MBBI, TII.get(Opc), StackPtr).addReg(StackPtr).addImm(ThisVal);
1366 void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
1367 MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
1368 MachineFrameInfo *MFI = MF.getFrameInfo();
1369 unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment();
1370 const Function* Fn = MF.getFunction();
1371 const X86Subtarget* Subtarget = &MF.getTarget().getSubtarget<X86Subtarget>();
1372 MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
1373 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
1374 MachineBasicBlock::iterator MBBI = MBB.begin();
1376 // Prepare for frame info.
1377 unsigned FrameLabelId = 0;
1379 // Get the number of bytes to allocate from the FrameInfo
1380 uint64_t StackSize = MFI->getStackSize();
1381 uint64_t NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
1384 // Get the offset of the stack slot for the EBP register... which is
1385 // guaranteed to be the last slot by processFunctionBeforeFrameFinalized.
1386 // Update the frame offset adjustment.
1387 MFI->setOffsetAdjustment(SlotSize-NumBytes);
1389 // Save EBP into the appropriate stack slot...
1390 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
1392 NumBytes -= SlotSize;
1394 if (MMI && MMI->needsFrameInfo()) {
1395 // Mark effective beginning of when frame pointer becomes valid.
1396 FrameLabelId = MMI->NextLabelID();
1397 BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(FrameLabelId);
1400 // Update EBP with the new base value...
1401 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr), FramePtr)
1405 unsigned ReadyLabelId = 0;
1406 if (MMI && MMI->needsFrameInfo()) {
1407 // Mark effective beginning of when frame pointer is ready.
1408 ReadyLabelId = MMI->NextLabelID();
1409 BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(ReadyLabelId);
1412 // Skip the callee-saved push instructions.
1413 while (MBBI != MBB.end() &&
1414 (MBBI->getOpcode() == X86::PUSH32r ||
1415 MBBI->getOpcode() == X86::PUSH64r))
1418 if (NumBytes) { // adjust stack pointer: ESP -= numbytes
1419 if (NumBytes >= 4096 && Subtarget->isTargetCygMing()) {
1420 // Check, whether EAX is livein for this function
1421 bool isEAXAlive = false;
1422 for (MachineFunction::livein_iterator II = MF.livein_begin(),
1423 EE = MF.livein_end(); (II != EE) && !isEAXAlive; ++II) {
1424 unsigned Reg = II->first;
1425 isEAXAlive = (Reg == X86::EAX || Reg == X86::AX ||
1426 Reg == X86::AH || Reg == X86::AL);
1429 // Function prologue calls _alloca to probe the stack when allocating
1430 // more than 4k bytes in one go. Touching the stack at 4K increments is
1431 // necessary to ensure that the guard pages used by the OS virtual memory
1432 // manager are allocated in correct sequence.
1434 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(NumBytes);
1435 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32))
1436 .addExternalSymbol("_alloca");
1439 BuildMI(MBB, MBBI, TII.get(X86::PUSH32r), X86::EAX);
1440 // Allocate NumBytes-4 bytes on stack. We'll also use 4 already
1441 // allocated bytes for EAX.
1442 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(NumBytes-4);
1443 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32))
1444 .addExternalSymbol("_alloca");
1446 MachineInstr *MI = addRegOffset(BuildMI(TII.get(X86::MOV32rm),X86::EAX),
1447 StackPtr, NumBytes-4);
1448 MBB.insert(MBBI, MI);
1451 // If there is an ADD32ri or SUB32ri of ESP immediately after this
1452 // instruction, merge the two instructions.
1453 if (MBBI != MBB.end()) {
1454 MachineBasicBlock::iterator NI = next(MBBI);
1455 unsigned Opc = MBBI->getOpcode();
1456 if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
1457 Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
1458 MBBI->getOperand(0).getReg() == StackPtr) {
1459 NumBytes -= MBBI->getOperand(2).getImm();
1462 } else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 ||
1463 Opc == X86::SUB32ri || Opc == X86::SUB32ri8) &&
1464 MBBI->getOperand(0).getReg() == StackPtr) {
1465 NumBytes += MBBI->getOperand(2).getImm();
1472 emitSPUpdate(MBB, MBBI, StackPtr, -(int64_t)NumBytes, Is64Bit, TII);
1476 if (MMI && MMI->needsFrameInfo()) {
1477 std::vector<MachineMove> &Moves = MMI->getFrameMoves();
1478 const TargetAsmInfo *TAI = MF.getTarget().getTargetAsmInfo();
1480 // Calculate amount of bytes used for return address storing
1482 (MF.getTarget().getFrameInfo()->getStackGrowthDirection() ==
1483 TargetFrameInfo::StackGrowsUp ?
1484 TAI->getAddressSize() : -TAI->getAddressSize());
1487 // Show update of SP.
1490 MachineLocation SPDst(MachineLocation::VirtualFP);
1491 MachineLocation SPSrc(MachineLocation::VirtualFP, 2*stackGrowth);
1492 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1494 MachineLocation SPDst(MachineLocation::VirtualFP);
1495 MachineLocation SPSrc(MachineLocation::VirtualFP, -StackSize+stackGrowth);
1496 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1499 //FIXME: Verify & implement for FP
1500 MachineLocation SPDst(StackPtr);
1501 MachineLocation SPSrc(StackPtr, stackGrowth);
1502 Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
1505 // Add callee saved registers to move list.
1506 const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
1508 // FIXME: This is dirty hack. The code itself is pretty mess right now.
1509 // It should be rewritten from scratch and generalized sometimes.
1511 // Determine maximum offset (minumum due to stack growth)
1512 int64_t MaxOffset = 0;
1513 for (unsigned I = 0, E = CSI.size(); I!=E; ++I)
1514 MaxOffset = std::min(MaxOffset,
1515 MFI->getObjectOffset(CSI[I].getFrameIdx()));
1517 // Calculate offsets
1518 for (unsigned I = 0, E = CSI.size(); I!=E; ++I) {
1519 int64_t Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
1520 unsigned Reg = CSI[I].getReg();
1521 Offset = (MaxOffset-Offset+3*stackGrowth);
1522 MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
1523 MachineLocation CSSrc(Reg);
1524 Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc));
1529 MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth);
1530 MachineLocation FPSrc(FramePtr);
1531 Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
1534 MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr);
1535 MachineLocation FPSrc(MachineLocation::VirtualFP);
1536 Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
1539 // If it's main() on Cygwin\Mingw32 we should align stack as well
1540 if (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
1541 Subtarget->isTargetCygMing()) {
1542 BuildMI(MBB, MBBI, TII.get(X86::AND32ri), X86::ESP)
1543 .addReg(X86::ESP).addImm(-Align);
1546 BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(Align);
1547 BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32)).addExternalSymbol("_alloca");
1551 void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
1552 MachineBasicBlock &MBB) const {
1553 const MachineFrameInfo *MFI = MF.getFrameInfo();
1554 const Function* Fn = MF.getFunction();
1555 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
1556 const X86Subtarget* Subtarget = &MF.getTarget().getSubtarget<X86Subtarget>();
1557 MachineBasicBlock::iterator MBBI = prior(MBB.end());
1558 unsigned RetOpcode = MBBI->getOpcode();
1560 switch (RetOpcode) {
1563 case X86::EH_RETURN:
1566 case X86::TAILJMPm: break; // These are ok
1568 assert(0 && "Can only insert epilog into returning blocks");
1571 // Get the number of bytes to allocate from the FrameInfo
1572 uint64_t StackSize = MFI->getStackSize();
1573 unsigned CSSize = X86FI->getCalleeSavedFrameSize();
1574 uint64_t NumBytes = StackSize - CSSize;
1578 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::POP64r : X86::POP32r), FramePtr);
1579 NumBytes -= SlotSize;
1582 // Skip the callee-saved pop instructions.
1583 while (MBBI != MBB.begin()) {
1584 MachineBasicBlock::iterator PI = prior(MBBI);
1585 unsigned Opc = PI->getOpcode();
1586 if (Opc != X86::POP32r && Opc != X86::POP64r && !TII.isTerminatorInstr(Opc))
1591 if (NumBytes || MFI->hasVarSizedObjects()) {
1592 // If there is an ADD32ri or SUB32ri of ESP immediately before this
1593 // instruction, merge the two instructions.
1594 if (MBBI != MBB.begin()) {
1595 MachineBasicBlock::iterator PI = prior(MBBI);
1596 unsigned Opc = PI->getOpcode();
1597 if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
1598 Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
1599 PI->getOperand(0).getReg() == StackPtr) {
1600 NumBytes += PI->getOperand(2).getImm();
1602 } else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 ||
1603 Opc == X86::SUB32ri || Opc == X86::SUB32ri8) &&
1604 PI->getOperand(0).getReg() == StackPtr) {
1605 NumBytes -= PI->getOperand(2).getImm();
1611 // If dynamic alloca is used, then reset esp to point to the last
1612 // callee-saved slot before popping them off!
1613 // Also, if it's main() on Cygwin/Mingw32 we aligned stack in the prologue, - revert
1614 // stack changes back. Note: we're assuming, that frame pointer was forced
1616 if (MFI->hasVarSizedObjects() ||
1617 (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
1618 Subtarget->isTargetCygMing())) {
1619 unsigned Opc = Is64Bit ? X86::LEA64r : X86::LEA32r;
1621 MachineInstr *MI = addRegOffset(BuildMI(TII.get(Opc), StackPtr),
1623 MBB.insert(MBBI, MI);
1625 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
1631 // adjust stack pointer back: ESP += numbytes
1633 emitSPUpdate(MBB, MBBI, StackPtr, NumBytes, Is64Bit, TII);
1635 // We're returning from function via eh_return.
1636 if (RetOpcode == X86::EH_RETURN) {
1637 MBBI = prior(MBB.end());
1638 MachineOperand &DestAddr = MBBI->getOperand(0);
1639 assert(DestAddr.isRegister() && "Offset should be in register!");
1640 BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
1641 addReg(DestAddr.getReg());
1645 unsigned X86RegisterInfo::getRARegister() const {
1647 return X86::RIP; // Should have dwarf #16
1649 return X86::EIP; // Should have dwarf #8
1652 unsigned X86RegisterInfo::getFrameRegister(MachineFunction &MF) const {
1653 return hasFP(MF) ? FramePtr : StackPtr;
1656 void X86RegisterInfo::getInitialFrameState(std::vector<MachineMove> &Moves)
1658 // Calculate amount of bytes used for return address storing
1659 int stackGrowth = (Is64Bit ? -8 : -4);
1661 // Initial state of the frame pointer is esp+4.
1662 MachineLocation Dst(MachineLocation::VirtualFP);
1663 MachineLocation Src(StackPtr, stackGrowth);
1664 Moves.push_back(MachineMove(0, Dst, Src));
1666 // Add return address to move list
1667 MachineLocation CSDst(StackPtr, stackGrowth);
1668 MachineLocation CSSrc(getRARegister());
1669 Moves.push_back(MachineMove(0, CSDst, CSSrc));
1672 unsigned X86RegisterInfo::getEHExceptionRegister() const {
1673 assert(0 && "What is the exception register");
1677 unsigned X86RegisterInfo::getEHHandlerRegister() const {
1678 assert(0 && "What is the exception handler register");
1683 unsigned getX86SubSuperRegister(unsigned Reg, MVT::ValueType VT, bool High) {
1685 default: return Reg;
1690 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1692 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1694 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1696 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1702 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1704 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1706 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1708 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1710 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1712 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1714 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1716 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1718 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1720 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1722 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1724 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1726 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1728 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1730 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1732 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1738 default: return Reg;
1739 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1741 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1743 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1745 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1747 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1749 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1751 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1753 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1755 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1757 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1759 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1761 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1763 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1765 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1767 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1769 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1774 default: return Reg;
1775 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1777 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1779 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1781 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1783 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1785 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1787 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1789 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1791 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1793 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1795 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1797 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1799 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1801 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1803 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1805 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1810 default: return Reg;
1811 case X86::AH: case X86::AL: case X86::AX: case X86::EAX: case X86::RAX:
1813 case X86::DH: case X86::DL: case X86::DX: case X86::EDX: case X86::RDX:
1815 case X86::CH: case X86::CL: case X86::CX: case X86::ECX: case X86::RCX:
1817 case X86::BH: case X86::BL: case X86::BX: case X86::EBX: case X86::RBX:
1819 case X86::SIL: case X86::SI: case X86::ESI: case X86::RSI:
1821 case X86::DIL: case X86::DI: case X86::EDI: case X86::RDI:
1823 case X86::BPL: case X86::BP: case X86::EBP: case X86::RBP:
1825 case X86::SPL: case X86::SP: case X86::ESP: case X86::RSP:
1827 case X86::R8B: case X86::R8W: case X86::R8D: case X86::R8:
1829 case X86::R9B: case X86::R9W: case X86::R9D: case X86::R9:
1831 case X86::R10B: case X86::R10W: case X86::R10D: case X86::R10:
1833 case X86::R11B: case X86::R11W: case X86::R11D: case X86::R11:
1835 case X86::R12B: case X86::R12W: case X86::R12D: case X86::R12:
1837 case X86::R13B: case X86::R13W: case X86::R13D: case X86::R13:
1839 case X86::R14B: case X86::R14W: case X86::R14D: case X86::R14:
1841 case X86::R15B: case X86::R15W: case X86::R15D: case X86::R15:
1850 #include "X86GenRegisterInfo.inc"