commit 3e3cdecf98e5a5a2ef1296f96c52da4b435dd950
author Jakob Stoklund Olesen <stoklund@2pi.dk> Fri Jun 29 21:00:03 2012 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Fri Jun 29 21:00:03 2012 +0000
tree d267db580bb9d8a9189d54288dddd10cc62f5252
parent da9ea1d6bc468127b72edef85552b57eac58d99d

Clear kill flags in InstrEmitter::EmitSubregNode().

When a local virtual register is made global, make sure to clear any
existing kill flags.

llvm-svn: 159461

llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index a57d47f..f154271 100644
--- a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -470,6 +470,7 @@
       VRBase = MRI->createVirtualRegister(TRC);
       BuildMI(*MBB, InsertPos, Node->getDebugLoc(),
               TII->get(TargetOpcode::COPY), VRBase).addReg(SrcReg);
+      MRI->clearKillFlags(SrcReg);
     } else {
       // VReg may not support a SubIdx sub-register, and we may need to
       // constrain its register class or issue a COPY to a compatible register