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Avoid generating a convert_rndsat node when the src and dest type are the same.
author
Mon P Wang
<wangmp@apple.com>
Thu, 11 Dec 2008 03:30:13 +0000
(
03:30
+0000)
committer
Mon P Wang
<wangmp@apple.com>
Thu, 11 Dec 2008 03:30:13 +0000
(
03:30
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60869
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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diff --git
a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index
bb3b42c
..
33eddae
100644
(file)
--- 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))