Remove preexisting kill flags in RegAllocLocal, just like LiveVariables does.
This should make it possible to start producing kill flags in isel without
breaking stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102976 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index 920ba57..94456d1 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -643,7 +643,10 @@
// uses regs before it defs them.
if (!MO.isReg() || !MO.getReg() || !MO.isUse())
continue;
-
+
+ // Ignore helpful kill flags from earlier passes.
+ MO.setIsKill(false);
+
LastUseDef[MO.getReg()] = std::make_pair(I, i);
if (TargetRegisterInfo::isVirtualRegister(MO.getReg())) continue;