diff options
| author | Mon P Wang <wangmp@apple.com> | 2008-12-11 03:30:13 +0000 |
|---|---|---|
| committer | Mon P Wang <wangmp@apple.com> | 2008-12-11 03:30:13 +0000 |
| commit | 6db08c4d2f2e1f1f83e845031bfee9017b126c5a (patch) | |
| tree | 6b5452ddc4418a3086ca75aa900e585751e32923 /lib/CodeGen/SelectionDAG/SelectionDAG.cpp | |
| parent | 775bb805c5a5a7ba6e4ccac85f650372a51e0273 (diff) | |
Avoid generating a convert_rndsat node when the src and dest type are the same.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60869 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index bb3b42c383..33eddae7f9 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1140,6 +1140,10 @@ SDValue SelectionDAG::getCondCode(ISD::CondCode Cond) { SDValue SelectionDAG::getConvertRndSat(MVT VT, 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) + return Val; + FoldingSetNodeID ID; void* IP = 0; if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) |