From 6db08c4d2f2e1f1f83e845031bfee9017b126c5a Mon Sep 17 00:00:00 2001 From: Mon P Wang Date: Thu, 11 Dec 2008 03:30:13 +0000 Subject: [PATCH] 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 --- lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index bb3b42c383f..33eddae7f90 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))