Fixes the bug exposed by Anton's test case in PR 5495:
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
diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp
index 48567a0..23b78c7 100644
--- a/lib/CodeGen/ProcessImplicitDefs.cpp
+++ b/lib/CodeGen/ProcessImplicitDefs.cpp
@@ -209,6 +209,10 @@
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);