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Added MachineInstr::isRegTiedToDefOperand to check for two-addressness.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67335 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-03-19 20:30:06 +00:00
parent 817046e1f1
commit a24752ff43
6 changed files with 42 additions and 24 deletions
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2
lib/CodeGen/RegAllocLocal.cpp
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@ -695,7 +695,7 @@ void RALocal::ComputeLocalLiveness(MachineBasicBlock& MBB) {
if (isPhysReg || !usedOutsideBlock) {
if (MO.isUse()) {
// Don't mark uses that are tied to defs as kills.
if (MI->getDesc().getOperandConstraint(idx, TOI::TIED_TO) == -1)
if (!MI->isRegTiedToDefOperand(idx))
MO.setIsKill(true);
} else
MO.setIsDead(true);