[X86] Connect the flags user from PCMPISTR instructions to the correct node from the instruction.
We were accidentally connecting it to result 0 instead of result 1. This was caught by the machine verifier that noticed the flags were dead, but we were using them somehow. I'm still not clear what actually happened downstream.
llvm-svn: 336925
diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
index 4ebb50d..f42e626 100644
--- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -3336,7 +3336,7 @@
}
// Connect the flag usage to the last instruction created.
- ReplaceUses(SDValue(Node, 2), SDValue(CNode, 0));
+ ReplaceUses(SDValue(Node, 2), SDValue(CNode, 1));
CurDAG->RemoveDeadNode(Node);
return;
}