[llvm-commits] [llvm] r88881 - /llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp

[Lang Hames]

Author: lhames
Date: Sun Nov 15 20:07:31 2009
New Revision: 88881

URL: http://llvm.org/viewvc/llvm-project?rev=88881&view=rev
Log:
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.


Modified:
    llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp

Modified: llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp?rev=88881&r1=88880&r2=88881&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp (original)
+++ llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp Sun Nov 15 20:07:31 2009
@@ -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);