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Move the computation of the IsEarlyClobber flag into its own loop, since the

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correct value is needed in every iteration of the loop for updating
LiveIntervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175603 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2013-02-20 06:46:46 +00:00
parent 60af0f2561
commit 6cf93d740a
1 changed files with 5 additions and 1 deletions
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6
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -1215,6 +1215,11 @@ TwoAddressInstructionPass::processTiedPairs(MachineInstr *MI,
TiedPairList &TiedPairs,
unsigned &Dist) {
bool IsEarlyClobber = false;
for (unsigned tpi = 0, tpe = TiedPairs.size(); tpi != tpe; ++tpi) {
const MachineOperand &DstMO = MI->getOperand(TiedPairs[tpi].second);
IsEarlyClobber |= DstMO.isEarlyClobber();
}
bool RemovedKillFlag = false;
bool AllUsesCopied = true;
unsigned LastCopiedReg = 0;
@ -1225,7 +1230,6 @@ TwoAddressInstructionPass::processTiedPairs(MachineInstr *MI,
const MachineOperand &DstMO = MI->getOperand(DstIdx);
unsigned RegA = DstMO.getReg();
IsEarlyClobber |= DstMO.isEarlyClobber();
// Grab RegB from the instruction because it may have changed if the
// instruction was commuted.