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Handle regmasks in RegisterScavenging. 

llvm-svn: 151210
This commit is contained in:
Jakob Stoklund Olesen 2012-02-22 22:50:14 +00:00
parent 4f02b22db5
commit e21b2d0845
1 changed files with 4 additions and 0 deletions
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4
llvm/lib/CodeGen/RegisterScavenging.cpp
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@ -148,6 +148,8 @@ void RegScavenger::forward() {
DefRegs.reset();
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (MO.isRegMask())
(isPred ? DefRegs : KillRegs).setBitsNotInMask(MO.getRegMask());
if (!MO.isReg())
continue;
unsigned Reg = MO.getReg();
@ -279,6 +281,8 @@ unsigned RegScavenger::findSurvivorReg(MachineBasicBlock::iterator StartMI,
// Remove any candidates touched by instruction.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (MO.isRegMask())
Candidates.clearBitsNotInMask(MO.getRegMask());
if (!MO.isReg() || MO.isUndef() || !MO.getReg())
continue;
if (TargetRegisterInfo::isVirtualRegister(MO.getReg())) {