Fix using wrong result type for setcc.
When reducing the bitwidth of a comparison against a constant, the
original setcc's result type was used, which was incorrect.
No test since I don't think any other in tree targets change the
bitwidth of the setcc type depending on the bitwidth of the compared
type.
llvm-svn: 208236
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index dc92795..2f5ee0c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1382,10 +1382,14 @@
EVT newVT = N0.getOperand(0).getValueType();
if (DCI.isBeforeLegalizeOps() ||
(isOperationLegal(ISD::SETCC, newVT) &&
- getCondCodeAction(Cond, newVT.getSimpleVT())==Legal))
- return DAG.getSetCC(dl, VT, N0.getOperand(0),
- DAG.getConstant(C1.trunc(InSize), newVT),
- Cond);
+ getCondCodeAction(Cond, newVT.getSimpleVT()) == Legal)) {
+ EVT NewSetCCVT = getSetCCResultType(*DAG.getContext(), newVT);
+ SDValue NewConst = DAG.getConstant(C1.trunc(InSize), newVT);
+
+ SDValue NewSetCC = DAG.getSetCC(dl, NewSetCCVT, N0.getOperand(0),
+ NewConst, Cond);
+ return DAG.getBoolExtOrTrunc(NewSetCC, dl, VT);
+ }
break;
}
default: