Fix a bug where we were not emitting a cvt rnd sat node for converting
between a unsigned integer and signed integer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63831 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index dd00e97..524f5ff 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1170,8 +1170,10 @@
SDValue Val, SDValue DTy,
SDValue STy, SDValue Rnd, SDValue Sat,
ISD::CvtCode Code) {
- // If the src and dest types are the same, no conversion is necessary.
- if (DTy == STy)
+ // If the src and dest types are the same and the conversion is between
+ // integer types of the same sign or two floats, no conversion is necessary.
+ if (DTy == STy &&
+ (Code == ISD::CVT_UU || Code == ISD::CVT_SS || Code == ISD::CVT_FF))
return Val;
FoldingSetNodeID ID;