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Handle regmasks in CriticalAntiDepBreaker. 

llvm-svn: 151223
This commit is contained in:
Jakob Stoklund Olesen 2012-02-23 01:15:26 +00:00
parent e664abb837
commit 38ce889cb6
1 changed files with 14 additions and 0 deletions
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14
llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp
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@ -253,6 +253,17 @@ void CriticalAntiDepBreaker::ScanInstruction(MachineInstr *MI,
// address updates. // address updates.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = MI->getOperand(i); MachineOperand &MO = MI->getOperand(i);
if (MO.isRegMask())
for (unsigned i = 0, e = TRI->getNumRegs(); i != e; ++i)
if (MO.clobbersPhysReg(i)) {
DefIndices[i] = Count;
KillIndices[i] = ~0u;
KeepRegs.erase(i);
Classes[i] = 0;
RegRefs.erase(i);
}
if (!MO.isReg()) continue; if (!MO.isReg()) continue;
unsigned Reg = MO.getReg(); unsigned Reg = MO.getReg();
if (Reg == 0) continue; if (Reg == 0) continue;
@ -355,6 +366,9 @@ CriticalAntiDepBreaker::isNewRegClobberedByRefs(RegRefIter RegRefBegin,
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &CheckOper = MI->getOperand(i); const MachineOperand &CheckOper = MI->getOperand(i);
if (CheckOper.isRegMask() && CheckOper.clobbersPhysReg(NewReg))
return true;
if (!CheckOper.isReg() || !CheckOper.isDef() || if (!CheckOper.isReg() || !CheckOper.isDef() ||
CheckOper.getReg() != NewReg) CheckOper.getReg() != NewReg)
continue; continue;