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Use isIdentityCopy. Fix a bozo bug (flipped condition) in InvalidateRegDef.

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llvm-svn: 85047
This commit is contained in:
Evan Cheng 2009-10-25 07:51:47 +00:00
parent a6242a5d04
commit 859d9f3b07
1 changed files with 5 additions and 5 deletions
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10
lib/CodeGen/VirtRegRewriter.cpp
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@ -495,7 +495,7 @@ static bool InvalidateRegDef(MachineBasicBlock::iterator I,
MachineOperand *DefOp = NULL;
for (unsigned i = 0, e = DefMI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = DefMI->getOperand(i);
if (!MO.isReg() || !MO.isUse() || !MO.isKill() || MO.isUndef())
if (!MO.isReg() || MO.isUse() || !MO.isKill() || MO.isUndef())
continue;
if (MO.getReg() == Reg)
DefOp = &MO;
@ -613,7 +613,7 @@ static void ReMaterialize(MachineBasicBlock &MBB,
assert(MO.isUse());
unsigned SubIdx = MO.getSubReg();
unsigned Phys = VRM.getPhys(VirtReg);
assert(Phys);
assert(Phys && "Virtual register is not assigned a register?");
unsigned RReg = SubIdx ? TRI->getSubReg(Phys, SubIdx) : Phys;
MO.setReg(RReg);
MO.setSubReg(0);
@ -856,7 +856,7 @@ unsigned ReuseInfo::GetRegForReload(const TargetRegisterClass *RC,
Spills.ClobberPhysReg(NewPhysReg);
Spills.ClobberPhysReg(NewOp.PhysRegReused);
unsigned RReg = SubIdx ? TRI->getSubReg(NewPhysReg, SubIdx) : NewPhysReg;
unsigned RReg = SubIdx ? TRI->getSubReg(NewPhysReg, SubIdx) :NewPhysReg;
MI->getOperand(NewOp.Operand).setReg(RReg);
MI->getOperand(NewOp.Operand).setSubReg(0);
@ -2258,7 +2258,7 @@ private:
// eliminate this or else the undef marker is lost and it will
// confuses the scavenger. This is extremely rare.
unsigned Src, Dst, SrcSR, DstSR;
if (TII->isMoveInstr(MI, Src, Dst, SrcSR, DstSR) && Src == Dst &&
if (TII->isIdentityCopy(MI, Src, Dst, SrcSR, DstSR) &&
!MI.findRegisterUseOperand(Src)->isUndef()) {
++NumDCE;
DEBUG(errs() << "Removing now-noop copy: " << MI);
@ -2347,7 +2347,7 @@ private:
// instruction before considering the dest reg to be changed.
{
unsigned Src, Dst, SrcSR, DstSR;
if (TII->isMoveInstr(MI, Src, Dst, SrcSR, DstSR) && Src == Dst) {
if (TII->isIdentityCopy(MI, Src, Dst, SrcSR, DstSR)) {
++NumDCE;
DEBUG(errs() << "Removing now-noop copy: " << MI);
InvalidateKills(MI, TRI, RegKills, KillOps);