- 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index 997e82f..96e7327 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -882,7 +882,7 @@
!RefsInMBB.count(FoldPt))
--FoldPt;
- int OpIdx = FoldPt->findRegisterDefOperandIdx(vreg, false);
+ int OpIdx = FoldPt->findRegisterDefOperandIdx(vreg);
if (OpIdx == -1)
return 0;