diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-09 01:27:21 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-09 01:27:21 +0000 |
| commit | 665eb1246678f976239e8e14ee7fe3a2874af2df (patch) | |
| tree | 353619336f7f9ea40e4bbb511af7bcec1e08ff33 /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | 1769cccfc8f248a34ab794b787752e2bdd9b21b3 (diff) | |
Fix broken isCopy handling in TrimLiveIntervalToLastUse.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107950 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 551866ee76..2e7e6f8b15 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_); |