- Change MachineInstr::findRegisterDefOperandIdx so it can also look for defs

that are aliases of the specified register.
- Rename modifiesRegister to definesRegister since it's looking a def of the
specific register or one of its super-registers. It's not looking for def of a
sub-register or alias that could change the specified register.
- Added modifiesRegister to look for defs of aliases.

llvm-svn: 104377

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/PreAllocSplitting.cpp b/llvm/lib/CodeGen/PreAllocSplitting.cpp
index 997e82f11db..96e7327a7eb 100644
--- a/llvm/lib/CodeGen/PreAllocSplitting.cpp
+++ b/llvm/lib/CodeGen/PreAllocSplitting.cpp
@@ -882,7 +882,7 @@ MachineInstr* PreAllocSplitting::FoldSpill(unsigned vreg,
          !RefsInMBB.count(FoldPt))
     --FoldPt;
   
-  int OpIdx = FoldPt->findRegisterDefOperandIdx(vreg, false);
+  int OpIdx = FoldPt->findRegisterDefOperandIdx(vreg);
   if (OpIdx == -1)
     return 0;