Fix problem fusing spill code into instructions: we didn't update the live
variable information to take into account the change of instruction
address.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11628 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index cbbc7c2..188b3b3 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -496,6 +496,9 @@
MachineBasicBlock::iterator MII = MI;
if (RegInfo->foldMemoryOperand(MII, OpNum, FrameIndex)) {
++NumFused;
+ // Since we changed the address of MI, make sure to update live variables
+ // to know that the new instruction has the properties of the old one.
+ LV->instructionChanged(MI, MII);
return MII;
}