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Fix a bug where we were not emitting a cvt rnd sat node for converting

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between a unsigned integer and signed integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63831 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang 2009-02-05 04:47:42 +00:00
parent c1da8864a9
commit b0e341bca1
1 changed files with 4 additions and 2 deletions

6
lib/CodeGen/SelectionDAG/SelectionDAG.cpp

@ -1170,8 +1170,10 @@ SDValue SelectionDAG::getConvertRndSat(MVT VT, DebugLoc dl,
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;