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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 | dffba45bcead389e957392f8cb5daef087f2c67c (patch) | |
| tree | 39f54ce20e97d514457ed1a9e9f769764d68452b /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | 22fe810bdfc5dafaf4dc3ce0658899e2c5ac2b26 (diff) | |
| download | external_llvm-dffba45bcead389e957392f8cb5daef087f2c67c.zip external_llvm-dffba45bcead389e957392f8cb5daef087f2c67c.tar.gz external_llvm-dffba45bcead389e957392f8cb5daef087f2c67c.tar.bz2 | |
Fix broken isCopy handling in TrimLiveIntervalToLastUse
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107921 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 551866e..2e7e6f8 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/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_); |