1 //===-- R600InstrInfo.cpp - R600 Instruction Information ------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief R600 Implementation of TargetInstrInfo.
13 //===----------------------------------------------------------------------===//
15 #include "R600InstrInfo.h"
17 #include "AMDGPUSubtarget.h"
18 #include "AMDGPUTargetMachine.h"
19 #include "R600Defines.h"
20 #include "R600MachineFunctionInfo.h"
21 #include "R600RegisterInfo.h"
22 #include "llvm/CodeGen/MachineFrameInfo.h"
23 #include "llvm/CodeGen/MachineInstrBuilder.h"
24 #include "llvm/CodeGen/MachineRegisterInfo.h"
28 #define GET_INSTRINFO_CTOR_DTOR
29 #include "AMDGPUGenDFAPacketizer.inc"
31 R600InstrInfo::R600InstrInfo(const AMDGPUSubtarget &st)
32 : AMDGPUInstrInfo(st), RI() {}
34 const R600RegisterInfo &R600InstrInfo::getRegisterInfo() const {
38 bool R600InstrInfo::isTrig(const MachineInstr &MI) const {
39 return get(MI.getOpcode()).TSFlags & R600_InstFlag::TRIG;
42 bool R600InstrInfo::isVector(const MachineInstr &MI) const {
43 return get(MI.getOpcode()).TSFlags & R600_InstFlag::VECTOR;
47 R600InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
48 MachineBasicBlock::iterator MI, DebugLoc DL,
49 unsigned DestReg, unsigned SrcReg,
51 unsigned VectorComponents = 0;
52 if ((AMDGPU::R600_Reg128RegClass.contains(DestReg) ||
53 AMDGPU::R600_Reg128VerticalRegClass.contains(DestReg)) &&
54 (AMDGPU::R600_Reg128RegClass.contains(SrcReg) ||
55 AMDGPU::R600_Reg128VerticalRegClass.contains(SrcReg))) {
57 } else if((AMDGPU::R600_Reg64RegClass.contains(DestReg) ||
58 AMDGPU::R600_Reg64VerticalRegClass.contains(DestReg)) &&
59 (AMDGPU::R600_Reg64RegClass.contains(SrcReg) ||
60 AMDGPU::R600_Reg64VerticalRegClass.contains(SrcReg))) {
64 if (VectorComponents > 0) {
65 for (unsigned I = 0; I < VectorComponents; I++) {
66 unsigned SubRegIndex = RI.getSubRegFromChannel(I);
67 buildDefaultInstruction(MBB, MI, AMDGPU::MOV,
68 RI.getSubReg(DestReg, SubRegIndex),
69 RI.getSubReg(SrcReg, SubRegIndex))
71 RegState::Define | RegState::Implicit);
74 MachineInstr *NewMI = buildDefaultInstruction(MBB, MI, AMDGPU::MOV,
76 NewMI->getOperand(getOperandIdx(*NewMI, AMDGPU::OpName::src0))
81 /// \returns true if \p MBBI can be moved into a new basic.
82 bool R600InstrInfo::isLegalToSplitMBBAt(MachineBasicBlock &MBB,
83 MachineBasicBlock::iterator MBBI) const {
84 for (MachineInstr::const_mop_iterator I = MBBI->operands_begin(),
85 E = MBBI->operands_end(); I != E; ++I) {
86 if (I->isReg() && !TargetRegisterInfo::isVirtualRegister(I->getReg()) &&
87 I->isUse() && RI.isPhysRegLiveAcrossClauses(I->getReg()))
93 bool R600InstrInfo::isMov(unsigned Opcode) const {
97 default: return false;
99 case AMDGPU::MOV_IMM_F32:
100 case AMDGPU::MOV_IMM_I32:
105 // Some instructions act as place holders to emulate operations that the GPU
106 // hardware does automatically. This function can be used to check if
107 // an opcode falls into this category.
108 bool R600InstrInfo::isPlaceHolderOpcode(unsigned Opcode) const {
110 default: return false;
116 bool R600InstrInfo::isReductionOp(unsigned Opcode) const {
120 bool R600InstrInfo::isCubeOp(unsigned Opcode) const {
122 default: return false;
123 case AMDGPU::CUBE_r600_pseudo:
124 case AMDGPU::CUBE_r600_real:
125 case AMDGPU::CUBE_eg_pseudo:
126 case AMDGPU::CUBE_eg_real:
131 bool R600InstrInfo::isALUInstr(unsigned Opcode) const {
132 unsigned TargetFlags = get(Opcode).TSFlags;
134 return (TargetFlags & R600_InstFlag::ALU_INST);
137 bool R600InstrInfo::hasInstrModifiers(unsigned Opcode) const {
138 unsigned TargetFlags = get(Opcode).TSFlags;
140 return ((TargetFlags & R600_InstFlag::OP1) |
141 (TargetFlags & R600_InstFlag::OP2) |
142 (TargetFlags & R600_InstFlag::OP3));
145 bool R600InstrInfo::isLDSInstr(unsigned Opcode) const {
146 unsigned TargetFlags = get(Opcode).TSFlags;
148 return ((TargetFlags & R600_InstFlag::LDS_1A) |
149 (TargetFlags & R600_InstFlag::LDS_1A1D) |
150 (TargetFlags & R600_InstFlag::LDS_1A2D));
153 bool R600InstrInfo::isLDSNoRetInstr(unsigned Opcode) const {
154 return isLDSInstr(Opcode) && getOperandIdx(Opcode, AMDGPU::OpName::dst) == -1;
157 bool R600InstrInfo::isLDSRetInstr(unsigned Opcode) const {
158 return isLDSInstr(Opcode) && getOperandIdx(Opcode, AMDGPU::OpName::dst) != -1;
161 bool R600InstrInfo::canBeConsideredALU(const MachineInstr *MI) const {
162 if (isALUInstr(MI->getOpcode()))
164 if (isVector(*MI) || isCubeOp(MI->getOpcode()))
166 switch (MI->getOpcode()) {
168 case AMDGPU::INTERP_PAIR_XY:
169 case AMDGPU::INTERP_PAIR_ZW:
170 case AMDGPU::INTERP_VEC_LOAD:
179 bool R600InstrInfo::isTransOnly(unsigned Opcode) const {
180 if (ST.hasCaymanISA())
182 return (get(Opcode).getSchedClass() == AMDGPU::Sched::TransALU);
185 bool R600InstrInfo::isTransOnly(const MachineInstr *MI) const {
186 return isTransOnly(MI->getOpcode());
189 bool R600InstrInfo::isVectorOnly(unsigned Opcode) const {
190 return (get(Opcode).getSchedClass() == AMDGPU::Sched::VecALU);
193 bool R600InstrInfo::isVectorOnly(const MachineInstr *MI) const {
194 return isVectorOnly(MI->getOpcode());
197 bool R600InstrInfo::isExport(unsigned Opcode) const {
198 return (get(Opcode).TSFlags & R600_InstFlag::IS_EXPORT);
201 bool R600InstrInfo::usesVertexCache(unsigned Opcode) const {
202 return ST.hasVertexCache() && IS_VTX(get(Opcode));
205 bool R600InstrInfo::usesVertexCache(const MachineInstr *MI) const {
206 const MachineFunction *MF = MI->getParent()->getParent();
207 const R600MachineFunctionInfo *MFI = MF->getInfo<R600MachineFunctionInfo>();
208 return MFI->getShaderType() != ShaderType::COMPUTE &&
209 usesVertexCache(MI->getOpcode());
212 bool R600InstrInfo::usesTextureCache(unsigned Opcode) const {
213 return (!ST.hasVertexCache() && IS_VTX(get(Opcode))) || IS_TEX(get(Opcode));
216 bool R600InstrInfo::usesTextureCache(const MachineInstr *MI) const {
217 const MachineFunction *MF = MI->getParent()->getParent();
218 const R600MachineFunctionInfo *MFI = MF->getInfo<R600MachineFunctionInfo>();
219 return (MFI->getShaderType() == ShaderType::COMPUTE &&
220 usesVertexCache(MI->getOpcode())) ||
221 usesTextureCache(MI->getOpcode());
224 bool R600InstrInfo::mustBeLastInClause(unsigned Opcode) const {
227 case AMDGPU::GROUP_BARRIER:
234 bool R600InstrInfo::usesAddressRegister(MachineInstr *MI) const {
235 return MI->findRegisterUseOperandIdx(AMDGPU::AR_X) != -1;
238 bool R600InstrInfo::definesAddressRegister(MachineInstr *MI) const {
239 return MI->findRegisterDefOperandIdx(AMDGPU::AR_X) != -1;
242 bool R600InstrInfo::readsLDSSrcReg(const MachineInstr *MI) const {
243 if (!isALUInstr(MI->getOpcode())) {
246 for (MachineInstr::const_mop_iterator I = MI->operands_begin(),
247 E = MI->operands_end(); I != E; ++I) {
248 if (!I->isReg() || !I->isUse() ||
249 TargetRegisterInfo::isVirtualRegister(I->getReg()))
252 if (AMDGPU::R600_LDS_SRC_REGRegClass.contains(I->getReg()))
258 int R600InstrInfo::getSrcIdx(unsigned Opcode, unsigned SrcNum) const {
259 static const unsigned OpTable[] = {
260 AMDGPU::OpName::src0,
261 AMDGPU::OpName::src1,
266 return getOperandIdx(Opcode, OpTable[SrcNum]);
269 int R600InstrInfo::getSelIdx(unsigned Opcode, unsigned SrcIdx) const {
270 static const unsigned SrcSelTable[][2] = {
271 {AMDGPU::OpName::src0, AMDGPU::OpName::src0_sel},
272 {AMDGPU::OpName::src1, AMDGPU::OpName::src1_sel},
273 {AMDGPU::OpName::src2, AMDGPU::OpName::src2_sel},
274 {AMDGPU::OpName::src0_X, AMDGPU::OpName::src0_sel_X},
275 {AMDGPU::OpName::src0_Y, AMDGPU::OpName::src0_sel_Y},
276 {AMDGPU::OpName::src0_Z, AMDGPU::OpName::src0_sel_Z},
277 {AMDGPU::OpName::src0_W, AMDGPU::OpName::src0_sel_W},
278 {AMDGPU::OpName::src1_X, AMDGPU::OpName::src1_sel_X},
279 {AMDGPU::OpName::src1_Y, AMDGPU::OpName::src1_sel_Y},
280 {AMDGPU::OpName::src1_Z, AMDGPU::OpName::src1_sel_Z},
281 {AMDGPU::OpName::src1_W, AMDGPU::OpName::src1_sel_W}
284 for (const auto &Row : SrcSelTable) {
285 if (getOperandIdx(Opcode, Row[0]) == (int)SrcIdx) {
286 return getOperandIdx(Opcode, Row[1]);
292 SmallVector<std::pair<MachineOperand *, int64_t>, 3>
293 R600InstrInfo::getSrcs(MachineInstr *MI) const {
294 SmallVector<std::pair<MachineOperand *, int64_t>, 3> Result;
296 if (MI->getOpcode() == AMDGPU::DOT_4) {
297 static const unsigned OpTable[8][2] = {
298 {AMDGPU::OpName::src0_X, AMDGPU::OpName::src0_sel_X},
299 {AMDGPU::OpName::src0_Y, AMDGPU::OpName::src0_sel_Y},
300 {AMDGPU::OpName::src0_Z, AMDGPU::OpName::src0_sel_Z},
301 {AMDGPU::OpName::src0_W, AMDGPU::OpName::src0_sel_W},
302 {AMDGPU::OpName::src1_X, AMDGPU::OpName::src1_sel_X},
303 {AMDGPU::OpName::src1_Y, AMDGPU::OpName::src1_sel_Y},
304 {AMDGPU::OpName::src1_Z, AMDGPU::OpName::src1_sel_Z},
305 {AMDGPU::OpName::src1_W, AMDGPU::OpName::src1_sel_W},
308 for (unsigned j = 0; j < 8; j++) {
309 MachineOperand &MO = MI->getOperand(getOperandIdx(MI->getOpcode(),
311 unsigned Reg = MO.getReg();
312 if (Reg == AMDGPU::ALU_CONST) {
313 unsigned Sel = MI->getOperand(getOperandIdx(MI->getOpcode(),
314 OpTable[j][1])).getImm();
315 Result.push_back(std::pair<MachineOperand *, int64_t>(&MO, Sel));
323 static const unsigned OpTable[3][2] = {
324 {AMDGPU::OpName::src0, AMDGPU::OpName::src0_sel},
325 {AMDGPU::OpName::src1, AMDGPU::OpName::src1_sel},
326 {AMDGPU::OpName::src2, AMDGPU::OpName::src2_sel},
329 for (unsigned j = 0; j < 3; j++) {
330 int SrcIdx = getOperandIdx(MI->getOpcode(), OpTable[j][0]);
333 MachineOperand &MO = MI->getOperand(SrcIdx);
334 unsigned Reg = MI->getOperand(SrcIdx).getReg();
335 if (Reg == AMDGPU::ALU_CONST) {
336 unsigned Sel = MI->getOperand(
337 getOperandIdx(MI->getOpcode(), OpTable[j][1])).getImm();
338 Result.push_back(std::pair<MachineOperand *, int64_t>(&MO, Sel));
341 if (Reg == AMDGPU::ALU_LITERAL_X) {
342 unsigned Imm = MI->getOperand(
343 getOperandIdx(MI->getOpcode(), AMDGPU::OpName::literal)).getImm();
344 Result.push_back(std::pair<MachineOperand *, int64_t>(&MO, Imm));
347 Result.push_back(std::pair<MachineOperand *, int64_t>(&MO, 0));
352 std::vector<std::pair<int, unsigned> >
353 R600InstrInfo::ExtractSrcs(MachineInstr *MI,
354 const DenseMap<unsigned, unsigned> &PV,
355 unsigned &ConstCount) const {
357 ArrayRef<std::pair<MachineOperand *, int64_t>> Srcs = getSrcs(MI);
358 const std::pair<int, unsigned> DummyPair(-1, 0);
359 std::vector<std::pair<int, unsigned> > Result;
361 for (unsigned n = Srcs.size(); i < n; ++i) {
362 unsigned Reg = Srcs[i].first->getReg();
363 unsigned Index = RI.getEncodingValue(Reg) & 0xff;
364 if (Reg == AMDGPU::OQAP) {
365 Result.push_back(std::pair<int, unsigned>(Index, 0));
367 if (PV.find(Reg) != PV.end()) {
368 // 255 is used to tells its a PS/PV reg
369 Result.push_back(std::pair<int, unsigned>(255, 0));
374 Result.push_back(DummyPair);
377 unsigned Chan = RI.getHWRegChan(Reg);
378 Result.push_back(std::pair<int, unsigned>(Index, Chan));
381 Result.push_back(DummyPair);
385 static std::vector<std::pair<int, unsigned> >
386 Swizzle(std::vector<std::pair<int, unsigned> > Src,
387 R600InstrInfo::BankSwizzle Swz) {
388 if (Src[0] == Src[1])
391 case R600InstrInfo::ALU_VEC_012_SCL_210:
393 case R600InstrInfo::ALU_VEC_021_SCL_122:
394 std::swap(Src[1], Src[2]);
396 case R600InstrInfo::ALU_VEC_102_SCL_221:
397 std::swap(Src[0], Src[1]);
399 case R600InstrInfo::ALU_VEC_120_SCL_212:
400 std::swap(Src[0], Src[1]);
401 std::swap(Src[0], Src[2]);
403 case R600InstrInfo::ALU_VEC_201:
404 std::swap(Src[0], Src[2]);
405 std::swap(Src[0], Src[1]);
407 case R600InstrInfo::ALU_VEC_210:
408 std::swap(Src[0], Src[2]);
415 getTransSwizzle(R600InstrInfo::BankSwizzle Swz, unsigned Op) {
417 case R600InstrInfo::ALU_VEC_012_SCL_210: {
418 unsigned Cycles[3] = { 2, 1, 0};
421 case R600InstrInfo::ALU_VEC_021_SCL_122: {
422 unsigned Cycles[3] = { 1, 2, 2};
425 case R600InstrInfo::ALU_VEC_120_SCL_212: {
426 unsigned Cycles[3] = { 2, 1, 2};
429 case R600InstrInfo::ALU_VEC_102_SCL_221: {
430 unsigned Cycles[3] = { 2, 2, 1};
434 llvm_unreachable("Wrong Swizzle for Trans Slot");
439 /// returns how many MIs (whose inputs are represented by IGSrcs) can be packed
440 /// in the same Instruction Group while meeting read port limitations given a
441 /// Swz swizzle sequence.
442 unsigned R600InstrInfo::isLegalUpTo(
443 const std::vector<std::vector<std::pair<int, unsigned> > > &IGSrcs,
444 const std::vector<R600InstrInfo::BankSwizzle> &Swz,
445 const std::vector<std::pair<int, unsigned> > &TransSrcs,
446 R600InstrInfo::BankSwizzle TransSwz) const {
448 memset(Vector, -1, sizeof(Vector));
449 for (unsigned i = 0, e = IGSrcs.size(); i < e; i++) {
450 const std::vector<std::pair<int, unsigned> > &Srcs =
451 Swizzle(IGSrcs[i], Swz[i]);
452 for (unsigned j = 0; j < 3; j++) {
453 const std::pair<int, unsigned> &Src = Srcs[j];
454 if (Src.first < 0 || Src.first == 255)
456 if (Src.first == GET_REG_INDEX(RI.getEncodingValue(AMDGPU::OQAP))) {
457 if (Swz[i] != R600InstrInfo::ALU_VEC_012_SCL_210 &&
458 Swz[i] != R600InstrInfo::ALU_VEC_021_SCL_122) {
459 // The value from output queue A (denoted by register OQAP) can
460 // only be fetched during the first cycle.
463 // OQAP does not count towards the normal read port restrictions
466 if (Vector[Src.second][j] < 0)
467 Vector[Src.second][j] = Src.first;
468 if (Vector[Src.second][j] != Src.first)
472 // Now check Trans Alu
473 for (unsigned i = 0, e = TransSrcs.size(); i < e; ++i) {
474 const std::pair<int, unsigned> &Src = TransSrcs[i];
475 unsigned Cycle = getTransSwizzle(TransSwz, i);
478 if (Src.first == 255)
480 if (Vector[Src.second][Cycle] < 0)
481 Vector[Src.second][Cycle] = Src.first;
482 if (Vector[Src.second][Cycle] != Src.first)
483 return IGSrcs.size() - 1;
485 return IGSrcs.size();
488 /// Given a swizzle sequence SwzCandidate and an index Idx, returns the next
489 /// (in lexicographic term) swizzle sequence assuming that all swizzles after
490 /// Idx can be skipped
492 NextPossibleSolution(
493 std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate,
495 assert(Idx < SwzCandidate.size());
497 while (ResetIdx > -1 && SwzCandidate[ResetIdx] == R600InstrInfo::ALU_VEC_210)
499 for (unsigned i = ResetIdx + 1, e = SwzCandidate.size(); i < e; i++) {
500 SwzCandidate[i] = R600InstrInfo::ALU_VEC_012_SCL_210;
504 int NextSwizzle = SwzCandidate[ResetIdx] + 1;
505 SwzCandidate[ResetIdx] = (R600InstrInfo::BankSwizzle)NextSwizzle;
509 /// Enumerate all possible Swizzle sequence to find one that can meet all
510 /// read port requirements.
511 bool R600InstrInfo::FindSwizzleForVectorSlot(
512 const std::vector<std::vector<std::pair<int, unsigned> > > &IGSrcs,
513 std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate,
514 const std::vector<std::pair<int, unsigned> > &TransSrcs,
515 R600InstrInfo::BankSwizzle TransSwz) const {
516 unsigned ValidUpTo = 0;
518 ValidUpTo = isLegalUpTo(IGSrcs, SwzCandidate, TransSrcs, TransSwz);
519 if (ValidUpTo == IGSrcs.size())
521 } while (NextPossibleSolution(SwzCandidate, ValidUpTo));
525 /// Instructions in Trans slot can't read gpr at cycle 0 if they also read
526 /// a const, and can't read a gpr at cycle 1 if they read 2 const.
528 isConstCompatible(R600InstrInfo::BankSwizzle TransSwz,
529 const std::vector<std::pair<int, unsigned> > &TransOps,
530 unsigned ConstCount) {
531 // TransALU can't read 3 constants
534 for (unsigned i = 0, e = TransOps.size(); i < e; ++i) {
535 const std::pair<int, unsigned> &Src = TransOps[i];
536 unsigned Cycle = getTransSwizzle(TransSwz, i);
539 if (ConstCount > 0 && Cycle == 0)
541 if (ConstCount > 1 && Cycle == 1)
548 R600InstrInfo::fitsReadPortLimitations(const std::vector<MachineInstr *> &IG,
549 const DenseMap<unsigned, unsigned> &PV,
550 std::vector<BankSwizzle> &ValidSwizzle,
553 //Todo : support shared src0 - src1 operand
555 std::vector<std::vector<std::pair<int, unsigned> > > IGSrcs;
556 ValidSwizzle.clear();
558 BankSwizzle TransBS = ALU_VEC_012_SCL_210;
559 for (unsigned i = 0, e = IG.size(); i < e; ++i) {
560 IGSrcs.push_back(ExtractSrcs(IG[i], PV, ConstCount));
561 unsigned Op = getOperandIdx(IG[i]->getOpcode(),
562 AMDGPU::OpName::bank_swizzle);
563 ValidSwizzle.push_back( (R600InstrInfo::BankSwizzle)
564 IG[i]->getOperand(Op).getImm());
566 std::vector<std::pair<int, unsigned> > TransOps;
568 return FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps, TransBS);
570 TransOps = std::move(IGSrcs.back());
572 ValidSwizzle.pop_back();
574 static const R600InstrInfo::BankSwizzle TransSwz[] = {
580 for (unsigned i = 0; i < 4; i++) {
581 TransBS = TransSwz[i];
582 if (!isConstCompatible(TransBS, TransOps, ConstCount))
584 bool Result = FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps,
587 ValidSwizzle.push_back(TransBS);
597 R600InstrInfo::fitsConstReadLimitations(const std::vector<unsigned> &Consts)
599 assert (Consts.size() <= 12 && "Too many operands in instructions group");
600 unsigned Pair1 = 0, Pair2 = 0;
601 for (unsigned i = 0, n = Consts.size(); i < n; ++i) {
602 unsigned ReadConstHalf = Consts[i] & 2;
603 unsigned ReadConstIndex = Consts[i] & (~3);
604 unsigned ReadHalfConst = ReadConstIndex | ReadConstHalf;
606 Pair1 = ReadHalfConst;
609 if (Pair1 == ReadHalfConst)
612 Pair2 = ReadHalfConst;
615 if (Pair2 != ReadHalfConst)
622 R600InstrInfo::fitsConstReadLimitations(const std::vector<MachineInstr *> &MIs)
624 std::vector<unsigned> Consts;
625 SmallSet<int64_t, 4> Literals;
626 for (unsigned i = 0, n = MIs.size(); i < n; i++) {
627 MachineInstr *MI = MIs[i];
628 if (!isALUInstr(MI->getOpcode()))
631 ArrayRef<std::pair<MachineOperand *, int64_t>> Srcs = getSrcs(MI);
633 for (unsigned j = 0, e = Srcs.size(); j < e; j++) {
634 std::pair<MachineOperand *, unsigned> Src = Srcs[j];
635 if (Src.first->getReg() == AMDGPU::ALU_LITERAL_X)
636 Literals.insert(Src.second);
637 if (Literals.size() > 4)
639 if (Src.first->getReg() == AMDGPU::ALU_CONST)
640 Consts.push_back(Src.second);
641 if (AMDGPU::R600_KC0RegClass.contains(Src.first->getReg()) ||
642 AMDGPU::R600_KC1RegClass.contains(Src.first->getReg())) {
643 unsigned Index = RI.getEncodingValue(Src.first->getReg()) & 0xff;
644 unsigned Chan = RI.getHWRegChan(Src.first->getReg());
645 Consts.push_back((Index << 2) | Chan);
649 return fitsConstReadLimitations(Consts);
653 R600InstrInfo::CreateTargetScheduleState(const TargetSubtargetInfo &STI) const {
654 const InstrItineraryData *II = STI.getInstrItineraryData();
655 return static_cast<const AMDGPUSubtarget &>(STI).createDFAPacketizer(II);
659 isPredicateSetter(unsigned Opcode) {
668 static MachineInstr *
669 findFirstPredicateSetterFrom(MachineBasicBlock &MBB,
670 MachineBasicBlock::iterator I) {
671 while (I != MBB.begin()) {
673 MachineInstr *MI = I;
674 if (isPredicateSetter(MI->getOpcode()))
682 bool isJump(unsigned Opcode) {
683 return Opcode == AMDGPU::JUMP || Opcode == AMDGPU::JUMP_COND;
686 static bool isBranch(unsigned Opcode) {
687 return Opcode == AMDGPU::BRANCH || Opcode == AMDGPU::BRANCH_COND_i32 ||
688 Opcode == AMDGPU::BRANCH_COND_f32;
692 R600InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
693 MachineBasicBlock *&TBB,
694 MachineBasicBlock *&FBB,
695 SmallVectorImpl<MachineOperand> &Cond,
696 bool AllowModify) const {
697 // Most of the following comes from the ARM implementation of AnalyzeBranch
699 // If the block has no terminators, it just falls into the block after it.
700 MachineBasicBlock::iterator I = MBB.getLastNonDebugInstr();
704 // AMDGPU::BRANCH* instructions are only available after isel and are not
706 if (isBranch(I->getOpcode()))
708 if (!isJump(static_cast<MachineInstr *>(I)->getOpcode())) {
712 // Remove successive JUMP
713 while (I != MBB.begin() && std::prev(I)->getOpcode() == AMDGPU::JUMP) {
714 MachineBasicBlock::iterator PriorI = std::prev(I);
716 I->removeFromParent();
719 MachineInstr *LastInst = I;
721 // If there is only one terminator instruction, process it.
722 unsigned LastOpc = LastInst->getOpcode();
723 if (I == MBB.begin() ||
724 !isJump(static_cast<MachineInstr *>(--I)->getOpcode())) {
725 if (LastOpc == AMDGPU::JUMP) {
726 TBB = LastInst->getOperand(0).getMBB();
728 } else if (LastOpc == AMDGPU::JUMP_COND) {
729 MachineInstr *predSet = I;
730 while (!isPredicateSetter(predSet->getOpcode())) {
733 TBB = LastInst->getOperand(0).getMBB();
734 Cond.push_back(predSet->getOperand(1));
735 Cond.push_back(predSet->getOperand(2));
736 Cond.push_back(MachineOperand::CreateReg(AMDGPU::PRED_SEL_ONE, false));
739 return true; // Can't handle indirect branch.
742 // Get the instruction before it if it is a terminator.
743 MachineInstr *SecondLastInst = I;
744 unsigned SecondLastOpc = SecondLastInst->getOpcode();
746 // If the block ends with a B and a Bcc, handle it.
747 if (SecondLastOpc == AMDGPU::JUMP_COND && LastOpc == AMDGPU::JUMP) {
748 MachineInstr *predSet = --I;
749 while (!isPredicateSetter(predSet->getOpcode())) {
752 TBB = SecondLastInst->getOperand(0).getMBB();
753 FBB = LastInst->getOperand(0).getMBB();
754 Cond.push_back(predSet->getOperand(1));
755 Cond.push_back(predSet->getOperand(2));
756 Cond.push_back(MachineOperand::CreateReg(AMDGPU::PRED_SEL_ONE, false));
760 // Otherwise, can't handle this.
765 MachineBasicBlock::iterator FindLastAluClause(MachineBasicBlock &MBB) {
766 for (MachineBasicBlock::reverse_iterator It = MBB.rbegin(), E = MBB.rend();
768 if (It->getOpcode() == AMDGPU::CF_ALU ||
769 It->getOpcode() == AMDGPU::CF_ALU_PUSH_BEFORE)
770 return std::prev(It.base());
776 R600InstrInfo::InsertBranch(MachineBasicBlock &MBB,
777 MachineBasicBlock *TBB,
778 MachineBasicBlock *FBB,
779 ArrayRef<MachineOperand> Cond,
781 assert(TBB && "InsertBranch must not be told to insert a fallthrough");
785 BuildMI(&MBB, DL, get(AMDGPU::JUMP)).addMBB(TBB);
788 MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end());
789 assert(PredSet && "No previous predicate !");
790 addFlag(PredSet, 0, MO_FLAG_PUSH);
791 PredSet->getOperand(2).setImm(Cond[1].getImm());
793 BuildMI(&MBB, DL, get(AMDGPU::JUMP_COND))
795 .addReg(AMDGPU::PREDICATE_BIT, RegState::Kill);
796 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
797 if (CfAlu == MBB.end())
799 assert (CfAlu->getOpcode() == AMDGPU::CF_ALU);
800 CfAlu->setDesc(get(AMDGPU::CF_ALU_PUSH_BEFORE));
804 MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end());
805 assert(PredSet && "No previous predicate !");
806 addFlag(PredSet, 0, MO_FLAG_PUSH);
807 PredSet->getOperand(2).setImm(Cond[1].getImm());
808 BuildMI(&MBB, DL, get(AMDGPU::JUMP_COND))
810 .addReg(AMDGPU::PREDICATE_BIT, RegState::Kill);
811 BuildMI(&MBB, DL, get(AMDGPU::JUMP)).addMBB(FBB);
812 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
813 if (CfAlu == MBB.end())
815 assert (CfAlu->getOpcode() == AMDGPU::CF_ALU);
816 CfAlu->setDesc(get(AMDGPU::CF_ALU_PUSH_BEFORE));
822 R600InstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
824 // Note : we leave PRED* instructions there.
825 // They may be needed when predicating instructions.
827 MachineBasicBlock::iterator I = MBB.end();
829 if (I == MBB.begin()) {
833 switch (I->getOpcode()) {
836 case AMDGPU::JUMP_COND: {
837 MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I);
838 clearFlag(predSet, 0, MO_FLAG_PUSH);
839 I->eraseFromParent();
840 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
841 if (CfAlu == MBB.end())
843 assert (CfAlu->getOpcode() == AMDGPU::CF_ALU_PUSH_BEFORE);
844 CfAlu->setDesc(get(AMDGPU::CF_ALU));
848 I->eraseFromParent();
853 if (I == MBB.begin()) {
857 switch (I->getOpcode()) {
858 // FIXME: only one case??
861 case AMDGPU::JUMP_COND: {
862 MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I);
863 clearFlag(predSet, 0, MO_FLAG_PUSH);
864 I->eraseFromParent();
865 MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB);
866 if (CfAlu == MBB.end())
868 assert (CfAlu->getOpcode() == AMDGPU::CF_ALU_PUSH_BEFORE);
869 CfAlu->setDesc(get(AMDGPU::CF_ALU));
873 I->eraseFromParent();
880 R600InstrInfo::isPredicated(const MachineInstr *MI) const {
881 int idx = MI->findFirstPredOperandIdx();
885 unsigned Reg = MI->getOperand(idx).getReg();
887 default: return false;
888 case AMDGPU::PRED_SEL_ONE:
889 case AMDGPU::PRED_SEL_ZERO:
890 case AMDGPU::PREDICATE_BIT:
896 R600InstrInfo::isPredicable(MachineInstr *MI) const {
897 // XXX: KILL* instructions can be predicated, but they must be the last
898 // instruction in a clause, so this means any instructions after them cannot
899 // be predicated. Until we have proper support for instruction clauses in the
900 // backend, we will mark KILL* instructions as unpredicable.
902 if (MI->getOpcode() == AMDGPU::KILLGT) {
904 } else if (MI->getOpcode() == AMDGPU::CF_ALU) {
905 // If the clause start in the middle of MBB then the MBB has more
906 // than a single clause, unable to predicate several clauses.
907 if (MI->getParent()->begin() != MachineBasicBlock::iterator(MI))
909 // TODO: We don't support KC merging atm
910 if (MI->getOperand(3).getImm() != 0 || MI->getOperand(4).getImm() != 0)
913 } else if (isVector(*MI)) {
916 return AMDGPUInstrInfo::isPredicable(MI);
922 R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &MBB,
924 unsigned ExtraPredCycles,
925 BranchProbability Probability) const{
930 R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &TMBB,
932 unsigned ExtraTCycles,
933 MachineBasicBlock &FMBB,
935 unsigned ExtraFCycles,
936 BranchProbability Probability) const {
941 R600InstrInfo::isProfitableToDupForIfCvt(MachineBasicBlock &MBB,
943 BranchProbability Probability)
949 R600InstrInfo::isProfitableToUnpredicate(MachineBasicBlock &TMBB,
950 MachineBasicBlock &FMBB) const {
956 R600InstrInfo::ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
957 MachineOperand &MO = Cond[1];
958 switch (MO.getImm()) {
959 case OPCODE_IS_ZERO_INT:
960 MO.setImm(OPCODE_IS_NOT_ZERO_INT);
962 case OPCODE_IS_NOT_ZERO_INT:
963 MO.setImm(OPCODE_IS_ZERO_INT);
966 MO.setImm(OPCODE_IS_NOT_ZERO);
968 case OPCODE_IS_NOT_ZERO:
969 MO.setImm(OPCODE_IS_ZERO);
975 MachineOperand &MO2 = Cond[2];
976 switch (MO2.getReg()) {
977 case AMDGPU::PRED_SEL_ZERO:
978 MO2.setReg(AMDGPU::PRED_SEL_ONE);
980 case AMDGPU::PRED_SEL_ONE:
981 MO2.setReg(AMDGPU::PRED_SEL_ZERO);
990 R600InstrInfo::DefinesPredicate(MachineInstr *MI,
991 std::vector<MachineOperand> &Pred) const {
992 return isPredicateSetter(MI->getOpcode());
997 R600InstrInfo::SubsumesPredicate(ArrayRef<MachineOperand> Pred1,
998 ArrayRef<MachineOperand> Pred2) const {
1004 R600InstrInfo::PredicateInstruction(MachineInstr *MI,
1005 ArrayRef<MachineOperand> Pred) const {
1006 int PIdx = MI->findFirstPredOperandIdx();
1008 if (MI->getOpcode() == AMDGPU::CF_ALU) {
1009 MI->getOperand(8).setImm(0);
1013 if (MI->getOpcode() == AMDGPU::DOT_4) {
1014 MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_X))
1015 .setReg(Pred[2].getReg());
1016 MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_Y))
1017 .setReg(Pred[2].getReg());
1018 MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_Z))
1019 .setReg(Pred[2].getReg());
1020 MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_W))
1021 .setReg(Pred[2].getReg());
1022 MachineInstrBuilder MIB(*MI->getParent()->getParent(), MI);
1023 MIB.addReg(AMDGPU::PREDICATE_BIT, RegState::Implicit);
1028 MachineOperand &PMO = MI->getOperand(PIdx);
1029 PMO.setReg(Pred[2].getReg());
1030 MachineInstrBuilder MIB(*MI->getParent()->getParent(), MI);
1031 MIB.addReg(AMDGPU::PREDICATE_BIT, RegState::Implicit);
1038 unsigned int R600InstrInfo::getPredicationCost(const MachineInstr *) const {
1042 unsigned int R600InstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
1043 const MachineInstr *MI,
1044 unsigned *PredCost) const {
1050 bool R600InstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const {
1052 switch(MI->getOpcode()) {
1053 default: return AMDGPUInstrInfo::expandPostRAPseudo(MI);
1054 case AMDGPU::R600_EXTRACT_ELT_V2:
1055 case AMDGPU::R600_EXTRACT_ELT_V4:
1056 buildIndirectRead(MI->getParent(), MI, MI->getOperand(0).getReg(),
1057 RI.getHWRegIndex(MI->getOperand(1).getReg()), // Address
1058 MI->getOperand(2).getReg(),
1059 RI.getHWRegChan(MI->getOperand(1).getReg()));
1061 case AMDGPU::R600_INSERT_ELT_V2:
1062 case AMDGPU::R600_INSERT_ELT_V4:
1063 buildIndirectWrite(MI->getParent(), MI, MI->getOperand(2).getReg(), // Value
1064 RI.getHWRegIndex(MI->getOperand(1).getReg()), // Address
1065 MI->getOperand(3).getReg(), // Offset
1066 RI.getHWRegChan(MI->getOperand(1).getReg())); // Channel
1069 MI->eraseFromParent();
1073 void R600InstrInfo::reserveIndirectRegisters(BitVector &Reserved,
1074 const MachineFunction &MF) const {
1075 const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering *>(
1076 MF.getSubtarget().getFrameLowering());
1078 unsigned StackWidth = TFL->getStackWidth(MF);
1079 int End = getIndirectIndexEnd(MF);
1084 for (int Index = getIndirectIndexBegin(MF); Index <= End; ++Index) {
1085 unsigned SuperReg = AMDGPU::R600_Reg128RegClass.getRegister(Index);
1086 Reserved.set(SuperReg);
1087 for (unsigned Chan = 0; Chan < StackWidth; ++Chan) {
1088 unsigned Reg = AMDGPU::R600_TReg32RegClass.getRegister((4 * Index) + Chan);
1094 unsigned R600InstrInfo::calculateIndirectAddress(unsigned RegIndex,
1095 unsigned Channel) const {
1096 // XXX: Remove when we support a stack width > 2
1097 assert(Channel == 0);
1101 const TargetRegisterClass *R600InstrInfo::getIndirectAddrRegClass() const {
1102 return &AMDGPU::R600_TReg32_XRegClass;
1105 MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB,
1106 MachineBasicBlock::iterator I,
1107 unsigned ValueReg, unsigned Address,
1108 unsigned OffsetReg) const {
1109 return buildIndirectWrite(MBB, I, ValueReg, Address, OffsetReg, 0);
1112 MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB,
1113 MachineBasicBlock::iterator I,
1114 unsigned ValueReg, unsigned Address,
1116 unsigned AddrChan) const {
1119 default: llvm_unreachable("Invalid Channel");
1120 case 0: AddrReg = AMDGPU::R600_AddrRegClass.getRegister(Address); break;
1121 case 1: AddrReg = AMDGPU::R600_Addr_YRegClass.getRegister(Address); break;
1122 case 2: AddrReg = AMDGPU::R600_Addr_ZRegClass.getRegister(Address); break;
1123 case 3: AddrReg = AMDGPU::R600_Addr_WRegClass.getRegister(Address); break;
1125 MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, AMDGPU::MOVA_INT_eg,
1126 AMDGPU::AR_X, OffsetReg);
1127 setImmOperand(MOVA, AMDGPU::OpName::write, 0);
1129 MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, AMDGPU::MOV,
1131 .addReg(AMDGPU::AR_X,
1132 RegState::Implicit | RegState::Kill);
1133 setImmOperand(Mov, AMDGPU::OpName::dst_rel, 1);
1137 MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB,
1138 MachineBasicBlock::iterator I,
1139 unsigned ValueReg, unsigned Address,
1140 unsigned OffsetReg) const {
1141 return buildIndirectRead(MBB, I, ValueReg, Address, OffsetReg, 0);
1144 MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB,
1145 MachineBasicBlock::iterator I,
1146 unsigned ValueReg, unsigned Address,
1148 unsigned AddrChan) const {
1151 default: llvm_unreachable("Invalid Channel");
1152 case 0: AddrReg = AMDGPU::R600_AddrRegClass.getRegister(Address); break;
1153 case 1: AddrReg = AMDGPU::R600_Addr_YRegClass.getRegister(Address); break;
1154 case 2: AddrReg = AMDGPU::R600_Addr_ZRegClass.getRegister(Address); break;
1155 case 3: AddrReg = AMDGPU::R600_Addr_WRegClass.getRegister(Address); break;
1157 MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, AMDGPU::MOVA_INT_eg,
1160 setImmOperand(MOVA, AMDGPU::OpName::write, 0);
1161 MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, AMDGPU::MOV,
1164 .addReg(AMDGPU::AR_X,
1165 RegState::Implicit | RegState::Kill);
1166 setImmOperand(Mov, AMDGPU::OpName::src0_rel, 1);
1171 unsigned R600InstrInfo::getMaxAlusPerClause() const {
1175 MachineInstrBuilder R600InstrInfo::buildDefaultInstruction(MachineBasicBlock &MBB,
1176 MachineBasicBlock::iterator I,
1180 unsigned Src1Reg) const {
1181 MachineInstrBuilder MIB = BuildMI(MBB, I, MBB.findDebugLoc(I), get(Opcode),
1185 MIB.addImm(0) // $update_exec_mask
1186 .addImm(0); // $update_predicate
1188 MIB.addImm(1) // $write
1190 .addImm(0) // $dst_rel
1191 .addImm(0) // $dst_clamp
1192 .addReg(Src0Reg) // $src0
1193 .addImm(0) // $src0_neg
1194 .addImm(0) // $src0_rel
1195 .addImm(0) // $src0_abs
1196 .addImm(-1); // $src0_sel
1199 MIB.addReg(Src1Reg) // $src1
1200 .addImm(0) // $src1_neg
1201 .addImm(0) // $src1_rel
1202 .addImm(0) // $src1_abs
1203 .addImm(-1); // $src1_sel
1206 //XXX: The r600g finalizer expects this to be 1, once we've moved the
1207 //scheduling to the backend, we can change the default to 0.
1208 MIB.addImm(1) // $last
1209 .addReg(AMDGPU::PRED_SEL_OFF) // $pred_sel
1210 .addImm(0) // $literal
1211 .addImm(0); // $bank_swizzle
1216 #define OPERAND_CASE(Label) \
1218 static const unsigned Ops[] = \
1228 static unsigned getSlotedOps(unsigned Op, unsigned Slot) {
1230 OPERAND_CASE(AMDGPU::OpName::update_exec_mask)
1231 OPERAND_CASE(AMDGPU::OpName::update_pred)
1232 OPERAND_CASE(AMDGPU::OpName::write)
1233 OPERAND_CASE(AMDGPU::OpName::omod)
1234 OPERAND_CASE(AMDGPU::OpName::dst_rel)
1235 OPERAND_CASE(AMDGPU::OpName::clamp)
1236 OPERAND_CASE(AMDGPU::OpName::src0)
1237 OPERAND_CASE(AMDGPU::OpName::src0_neg)
1238 OPERAND_CASE(AMDGPU::OpName::src0_rel)
1239 OPERAND_CASE(AMDGPU::OpName::src0_abs)
1240 OPERAND_CASE(AMDGPU::OpName::src0_sel)
1241 OPERAND_CASE(AMDGPU::OpName::src1)
1242 OPERAND_CASE(AMDGPU::OpName::src1_neg)
1243 OPERAND_CASE(AMDGPU::OpName::src1_rel)
1244 OPERAND_CASE(AMDGPU::OpName::src1_abs)
1245 OPERAND_CASE(AMDGPU::OpName::src1_sel)
1246 OPERAND_CASE(AMDGPU::OpName::pred_sel)
1248 llvm_unreachable("Wrong Operand");
1254 MachineInstr *R600InstrInfo::buildSlotOfVectorInstruction(
1255 MachineBasicBlock &MBB, MachineInstr *MI, unsigned Slot, unsigned DstReg)
1257 assert (MI->getOpcode() == AMDGPU::DOT_4 && "Not Implemented");
1259 if (ST.getGeneration() <= AMDGPUSubtarget::R700)
1260 Opcode = AMDGPU::DOT4_r600;
1262 Opcode = AMDGPU::DOT4_eg;
1263 MachineBasicBlock::iterator I = MI;
1264 MachineOperand &Src0 = MI->getOperand(
1265 getOperandIdx(MI->getOpcode(), getSlotedOps(AMDGPU::OpName::src0, Slot)));
1266 MachineOperand &Src1 = MI->getOperand(
1267 getOperandIdx(MI->getOpcode(), getSlotedOps(AMDGPU::OpName::src1, Slot)));
1268 MachineInstr *MIB = buildDefaultInstruction(
1269 MBB, I, Opcode, DstReg, Src0.getReg(), Src1.getReg());
1270 static const unsigned Operands[14] = {
1271 AMDGPU::OpName::update_exec_mask,
1272 AMDGPU::OpName::update_pred,
1273 AMDGPU::OpName::write,
1274 AMDGPU::OpName::omod,
1275 AMDGPU::OpName::dst_rel,
1276 AMDGPU::OpName::clamp,
1277 AMDGPU::OpName::src0_neg,
1278 AMDGPU::OpName::src0_rel,
1279 AMDGPU::OpName::src0_abs,
1280 AMDGPU::OpName::src0_sel,
1281 AMDGPU::OpName::src1_neg,
1282 AMDGPU::OpName::src1_rel,
1283 AMDGPU::OpName::src1_abs,
1284 AMDGPU::OpName::src1_sel,
1287 MachineOperand &MO = MI->getOperand(getOperandIdx(MI->getOpcode(),
1288 getSlotedOps(AMDGPU::OpName::pred_sel, Slot)));
1289 MIB->getOperand(getOperandIdx(Opcode, AMDGPU::OpName::pred_sel))
1290 .setReg(MO.getReg());
1292 for (unsigned i = 0; i < 14; i++) {
1293 MachineOperand &MO = MI->getOperand(
1294 getOperandIdx(MI->getOpcode(), getSlotedOps(Operands[i], Slot)));
1295 assert (MO.isImm());
1296 setImmOperand(MIB, Operands[i], MO.getImm());
1298 MIB->getOperand(20).setImm(0);
1302 MachineInstr *R600InstrInfo::buildMovImm(MachineBasicBlock &BB,
1303 MachineBasicBlock::iterator I,
1305 uint64_t Imm) const {
1306 MachineInstr *MovImm = buildDefaultInstruction(BB, I, AMDGPU::MOV, DstReg,
1307 AMDGPU::ALU_LITERAL_X);
1308 setImmOperand(MovImm, AMDGPU::OpName::literal, Imm);
1312 MachineInstr *R600InstrInfo::buildMovInstr(MachineBasicBlock *MBB,
1313 MachineBasicBlock::iterator I,
1314 unsigned DstReg, unsigned SrcReg) const {
1315 return buildDefaultInstruction(*MBB, I, AMDGPU::MOV, DstReg, SrcReg);
1318 int R600InstrInfo::getOperandIdx(const MachineInstr &MI, unsigned Op) const {
1319 return getOperandIdx(MI.getOpcode(), Op);
1322 int R600InstrInfo::getOperandIdx(unsigned Opcode, unsigned Op) const {
1323 return AMDGPU::getNamedOperandIdx(Opcode, Op);
1326 void R600InstrInfo::setImmOperand(MachineInstr *MI, unsigned Op,
1327 int64_t Imm) const {
1328 int Idx = getOperandIdx(*MI, Op);
1329 assert(Idx != -1 && "Operand not supported for this instruction.");
1330 assert(MI->getOperand(Idx).isImm());
1331 MI->getOperand(Idx).setImm(Imm);
1334 //===----------------------------------------------------------------------===//
1335 // Instruction flag getters/setters
1336 //===----------------------------------------------------------------------===//
1338 bool R600InstrInfo::hasFlagOperand(const MachineInstr &MI) const {
1339 return GET_FLAG_OPERAND_IDX(get(MI.getOpcode()).TSFlags) != 0;
1342 MachineOperand &R600InstrInfo::getFlagOp(MachineInstr *MI, unsigned SrcIdx,
1343 unsigned Flag) const {
1344 unsigned TargetFlags = get(MI->getOpcode()).TSFlags;
1347 // If we pass something other than the default value of Flag to this
1348 // function, it means we are want to set a flag on an instruction
1349 // that uses native encoding.
1350 assert(HAS_NATIVE_OPERANDS(TargetFlags));
1351 bool IsOP3 = (TargetFlags & R600_InstFlag::OP3) == R600_InstFlag::OP3;
1354 FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::clamp);
1357 FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::write);
1359 case MO_FLAG_NOT_LAST:
1361 FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::last);
1365 case 0: FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::src0_neg); break;
1366 case 1: FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::src1_neg); break;
1367 case 2: FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::src2_neg); break;
1372 assert(!IsOP3 && "Cannot set absolute value modifier for OP3 "
1376 case 0: FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::src0_abs); break;
1377 case 1: FlagIndex = getOperandIdx(*MI, AMDGPU::OpName::src1_abs); break;
1385 assert(FlagIndex != -1 && "Flag not supported for this instruction");
1387 FlagIndex = GET_FLAG_OPERAND_IDX(TargetFlags);
1388 assert(FlagIndex != 0 &&
1389 "Instruction flags not supported for this instruction");
1392 MachineOperand &FlagOp = MI->getOperand(FlagIndex);
1393 assert(FlagOp.isImm());
1397 void R600InstrInfo::addFlag(MachineInstr *MI, unsigned Operand,
1398 unsigned Flag) const {
1399 unsigned TargetFlags = get(MI->getOpcode()).TSFlags;
1403 if (HAS_NATIVE_OPERANDS(TargetFlags)) {
1404 MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag);
1405 if (Flag == MO_FLAG_NOT_LAST) {
1406 clearFlag(MI, Operand, MO_FLAG_LAST);
1407 } else if (Flag == MO_FLAG_MASK) {
1408 clearFlag(MI, Operand, Flag);
1413 MachineOperand &FlagOp = getFlagOp(MI, Operand);
1414 FlagOp.setImm(FlagOp.getImm() | (Flag << (NUM_MO_FLAGS * Operand)));
1418 void R600InstrInfo::clearFlag(MachineInstr *MI, unsigned Operand,
1419 unsigned Flag) const {
1420 unsigned TargetFlags = get(MI->getOpcode()).TSFlags;
1421 if (HAS_NATIVE_OPERANDS(TargetFlags)) {
1422 MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag);
1425 MachineOperand &FlagOp = getFlagOp(MI);
1426 unsigned InstFlags = FlagOp.getImm();
1427 InstFlags &= ~(Flag << (NUM_MO_FLAGS * Operand));
1428 FlagOp.setImm(InstFlags);