LiveInterval::iterator ULR = IntA.FindLiveRangeContaining(UseIdx);
if (ULR == IntA.end() || ULR->valno != AValNo)
continue;
- UseMO.setReg(NewReg);
+ if (TargetRegisterInfo::isPhysicalRegister(NewReg))
+ UseMO.substPhysReg(NewReg, *tri_);
+ else
+ UseMO.setReg(NewReg);
if (UseMI == CopyMI)
continue;
if (UseMO.isKill()) {
if (Extended)
UseMO.setIsKill(false);
}
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- if (UseMI->isCopy()) {
- if (UseMI->getOperand(0).getReg() != IntB.reg ||
- UseMI->getOperand(0).getSubReg())
- continue;
- } else if (tii_->isMoveInstr(*UseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx)){
- if (DstReg != IntB.reg || DstSubIdx)
- continue;
- } else
+ if (!UseMI->isCopy())
+ continue;
+ if (UseMI->getOperand(0).getReg() != IntB.reg ||
+ UseMI->getOperand(0).getSubReg())
continue;
+
// This copy will become a noop. If it's defining a new val#,
// remove that val# as well. However this live range is being
// extended to the end of the existing live range defined by the copy.
SlotIndex DefIdx = UseIdx.getDefIndex();
const LiveRange *DLR = IntB.getLiveRangeContaining(DefIdx);
+ if (!DLR)
+ continue;
BHasPHIKill |= DLR->valno->hasPHIKill();
assert(DLR->valno->def == DefIdx);
BDeadValNos.push_back(DLR->valno);
// of last use.
LastUse->setIsKill();
removeRange(li, LastUseIdx.getDefIndex(), LR->end, li_, tri_);
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- if ((LastUseMI->isCopy() && !LastUseMI->getOperand(0).getSubReg()) ||
- (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
- DstReg == li.reg && DstSubIdx == 0)) {
- // Last use is itself an identity code.
- int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg,
- false, false, tri_);
- LastUseMI->getOperand(DeadIdx).setIsDead();
+ if (LastUseMI->isCopy()) {
+ MachineOperand &DefMO = LastUseMI->getOperand(0);
+ if (DefMO.getReg() == li.reg && !DefMO.getSubReg())
+ DefMO.setIsDead();
}
return true;
}
// A PhysReg copy that won't be coalesced can perhaps be rematerialized
// instead.
if (DstIsPhys) {
- unsigned CopySrcReg, CopyDstReg, CopySrcSubIdx, CopyDstSubIdx;
- if (tii_->isMoveInstr(*UseMI, CopySrcReg, CopyDstReg,
- CopySrcSubIdx, CopyDstSubIdx) &&
- CopySrcSubIdx == 0 && CopyDstSubIdx == 0 &&
- CopySrcReg != CopyDstReg && CopySrcReg == SrcReg &&
- CopyDstReg != DstReg && !JoinedCopies.count(UseMI) &&
- ReMaterializeTrivialDef(li_->getInterval(SrcReg), CopyDstReg, 0,
- UseMI))
+ if (UseMI->isCopy() &&
+ !UseMI->getOperand(1).getSubReg() &&
+ !UseMI->getOperand(0).getSubReg() &&
+ UseMI->getOperand(1).getReg() == SrcReg &&
+ UseMI->getOperand(0).getReg() != SrcReg &&
+ UseMI->getOperand(0).getReg() != DstReg &&
+ !JoinedCopies.count(UseMI) &&
+ ReMaterializeTrivialDef(li_->getInterval(SrcReg),
+ UseMI->getOperand(0).getReg(), 0, UseMI))
continue;
}
dbgs() << li_->getInstructionIndex(UseMI) << "\t";
dbgs() << *UseMI;
});
-
-
- // After updating the operand, check if the machine instruction has
- // become a copy. If so, update its val# information.
- const TargetInstrDesc &TID = UseMI->getDesc();
- if (DstIsPhys || TID.getNumDefs() != 1 || TID.getNumOperands() <= 2)
- continue;
-
- unsigned CopySrcReg, CopyDstReg, CopySrcSubIdx, CopyDstSubIdx;
- if (tii_->isMoveInstr(*UseMI, CopySrcReg, CopyDstReg,
- CopySrcSubIdx, CopyDstSubIdx) &&
- CopySrcReg != CopyDstReg &&
- (TargetRegisterInfo::isVirtualRegister(CopyDstReg) ||
- allocatableRegs_[CopyDstReg])) {
- LiveInterval &LI = li_->getInterval(CopyDstReg);
- SlotIndex DefIdx =
- li_->getInstructionIndex(UseMI).getDefIndex();
- if (const LiveRange *DLR = LI.getLiveRangeContaining(DefIdx)) {
- if (DLR->valno->def == DefIdx)
- DLR->valno->setCopy(UseMI);
- }
- }
}
}
// Live-in to the function but dead. Remove it from entry live-in set.
if (mf_->begin()->isLiveIn(li.reg))
mf_->begin()->removeLiveIn(li.reg);
- const LiveRange *LR = li.getLiveRangeContaining(CopyIdx);
- removeRange(li, LR->start, LR->end, li_, tri_);
+ if (const LiveRange *LR = li.getLiveRangeContaining(CopyIdx))
+ removeRange(li, LR->start, LR->end, li_, tri_);
return removeIntervalIfEmpty(li, li_, tri_);
}
MachineInstr *Inst = MII++;
// If this isn't a copy nor a extract_subreg, we can't join intervals.
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- bool isInsUndef = false;
+ unsigned SrcReg, DstReg;
if (Inst->isCopy()) {
DstReg = Inst->getOperand(0).getReg();
SrcReg = Inst->getOperand(1).getReg();
} else if (Inst->isSubregToReg()) {
DstReg = Inst->getOperand(0).getReg();
SrcReg = Inst->getOperand(2).getReg();
- } else if (!tii_->isMoveInstr(*Inst, SrcReg, DstReg, SrcSubIdx, DstSubIdx))
+ } else
continue;
bool SrcIsPhys = TargetRegisterInfo::isPhysicalRegister(SrcReg);
bool DstIsPhys = TargetRegisterInfo::isPhysicalRegister(DstReg);
- if (isInsUndef ||
- (li_->hasInterval(SrcReg) && li_->getInterval(SrcReg).empty()))
+ if (li_->hasInterval(SrcReg) && li_->getInterval(SrcReg).empty())
ImpDefCopies.push_back(CopyRec(Inst, 0));
else if (SrcIsPhys || DstIsPhys)
PhysCopies.push_back(CopyRec(Inst, 0));
MachineInstr *UseMI = Use.getParent();
if (UseMI->isIdentityCopy())
continue;
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- if (tii_->isMoveInstr(*UseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
- SrcReg == DstReg && SrcSubIdx == DstSubIdx)
- // Ignore identity copies.
- continue;
SlotIndex Idx = li_->getInstructionIndex(UseMI);
// FIXME: Should this be Idx != UseIdx? SlotIndex() will return something
// that compares higher than any other interval.
return NULL;
// Ignore identity copies.
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- if (!MI->isIdentityCopy() &&
- !(tii_->isMoveInstr(*MI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
- SrcReg == DstReg && SrcSubIdx == DstSubIdx))
+ if (!MI->isIdentityCopy())
for (unsigned i = 0, NumOps = MI->getNumOperands(); i != NumOps; ++i) {
MachineOperand &Use = MI->getOperand(i);
if (Use.isReg() && Use.isUse() && Use.getReg() &&
for (MachineBasicBlock::iterator mii = mbb->begin(), mie = mbb->end();
mii != mie; ) {
MachineInstr *MI = mii;
- unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
if (JoinedCopies.count(MI)) {
// Delete all coalesced copies.
bool DoDelete = true;
- if (!tii_->isMoveInstr(*MI, SrcReg, DstReg, SrcSubIdx, DstSubIdx)) {
- assert(MI->isCopyLike() && "Unrecognized copy instruction");
- SrcReg = MI->getOperand(MI->isSubregToReg() ? 2 : 1).getReg();
- if (TargetRegisterInfo::isPhysicalRegister(SrcReg))
- // Do not delete extract_subreg, insert_subreg of physical
- // registers unless the definition is dead. e.g.
- // %DO<def> = INSERT_SUBREG %D0<undef>, %S0<kill>, 1
- // or else the scavenger may complain. LowerSubregs will
- // delete them later.
- DoDelete = false;
- }
+ assert(MI->isCopyLike() && "Unrecognized copy instruction");
+ unsigned SrcReg = MI->getOperand(MI->isSubregToReg() ? 2 : 1).getReg();
+ if (TargetRegisterInfo::isPhysicalRegister(SrcReg))
+ // Do not delete extract_subreg, insert_subreg of physical
+ // registers unless the definition is dead. e.g.
+ // %DO<def> = INSERT_SUBREG %D0<undef>, %S0<kill>, 1
+ // or else the scavenger may complain. LowerSubregs will
+ // delete them later.
+ DoDelete = false;
+
if (MI->allDefsAreDead()) {
LiveInterval &li = li_->getInterval(SrcReg);
if (!ShortenDeadCopySrcLiveRange(li, MI))
}
// If the move will be an identity move delete it
- bool isMove= tii_->isMoveInstr(*MI, SrcReg, DstReg, SrcSubIdx, DstSubIdx);
- if (MI->isIdentityCopy() ||
- (isMove && SrcReg == DstReg && SrcSubIdx == DstSubIdx)) {
+ if (MI->isIdentityCopy()) {
+ unsigned SrcReg = MI->getOperand(1).getReg();
if (li_->hasInterval(SrcReg)) {
LiveInterval &RegInt = li_->getInterval(SrcReg);
// If def of this move instruction is dead, remove its live range
projects / oota-llvm.git / blobdiff