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Fixes the bug exposed by Anton's test case in PR 5495:

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Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it
removes the copy from said reg's Kills list.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88881 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2009-11-16 02:07:31 +00:00
parent b126d0530d
commit 79ac32de3b
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/ProcessImplicitDefs.cpp
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@ -209,6 +209,10 @@ bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &fn) {
unsigned SrcReg, DstReg, SrcSubReg, DstSubReg;
if (tii_->isMoveInstr(*RMI, SrcReg, DstReg, SrcSubReg, DstSubReg) &&
Reg == SrcReg) {
if (RMO.isKill()) {
LiveVariables::VarInfo& vi = lv_->getVarInfo(Reg);
vi.removeKill(RMI);
}
RMI->setDesc(tii_->get(TargetInstrInfo::IMPLICIT_DEF));
for (int j = RMI->getNumOperands() - 1, ee = 0; j > ee; --j)
RMI->RemoveOperand(j);