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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-08 22:30:38 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-08 22:30:38 +0000 |
| commit | 75c465585acc11ca8f985623e6cc51f2eb895608 (patch) | |
| tree | a4f785823eccabb8230ce05a3b384ab789e9dddd /llvm/lib/CodeGen | |
| parent | ec58a43d81d99a46af9bbc57bbcfe8e564bba54b (diff) | |
| download | bcm5719-llvm-75c465585acc11ca8f985623e6cc51f2eb895608.tar.gz bcm5719-llvm-75c465585acc11ca8f985623e6cc51f2eb895608.zip | |
Fix broken isCopy handling in TrimLiveIntervalToLastUse
llvm-svn: 107921
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index 551866ee76a..2e7e6f8b158 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -618,10 +618,14 @@ SimpleRegisterCoalescing::TrimLiveIntervalToLastUse(SlotIndex CopyIdx, // of last use. LastUse->setIsKill(); removeRange(li, LastUseIdx.getDefIndex(), LR->end, li_, tri_); + if (LastUseMI->isCopy()) { + MachineOperand &DefMO = LastUseMI->getOperand(0); + if (DefMO.getReg() == li.reg && !DefMO.getSubReg()) + DefMO.setIsDead(); + } unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx; - if ((LastUseMI->isCopy() && !LastUseMI->getOperand(0).getSubReg()) || - (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) && - DstReg == li.reg && DstSubIdx == 0)) { + if (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) && + DstReg == li.reg && DstSubIdx == 0) { // Last use is itself an identity code. int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg, false, false, tri_); |
