Fix x86's XALUO lowering to return its replacement values instead
of doing the RAUW calls for the overflow value itself. This makes
it more consistent with how the rest of LegalizeDAG works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135788 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index d8ffccb..472eb64 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -9124,8 +9124,7 @@
DAG.getConstant(X86::COND_O, MVT::i32),
SDValue(Sum.getNode(), 2));
- DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), SetCC);
- return Sum;
+ return DAG.getNode(ISD::MERGE_VALUES, DL, N->getVTList(), Sum, SetCC);
}
}
@@ -9138,8 +9137,7 @@
DAG.getConstant(Cond, MVT::i32),
SDValue(Sum.getNode(), 1));
- DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), SetCC);
- return Sum;
+ return DAG.getNode(ISD::MERGE_VALUES, DL, N->getVTList(), Sum, SetCC);
}
SDValue X86TargetLowering::LowerSIGN_EXTEND_INREG(SDValue Op, SelectionDAG &DAG) const{