maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

SCEV: Actually set overflow flags on add expressions. 

setFlags doesn't modify its arguments.

llvm-svn: 145007
This commit is contained in:
Benjamin Kramer 2011-11-20 10:24:36 +00:00
parent 20df3953d3
commit b5ba2eef2d
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
llvm/lib/Analysis/ScalarEvolution.cpp
View File

@ -3601,9 +3601,9 @@ const SCEV *ScalarEvolution::createSCEV(Value *V) {
SCEV::NoWrapFlags Flags = SCEV::FlagAnyWrap;
OverflowingBinaryOperator *OBO = cast<OverflowingBinaryOperator>(V);
if (OBO->hasNoSignedWrap())
setFlags(Flags, SCEV::FlagNSW);
Flags = setFlags(Flags, SCEV::FlagNSW);
if (OBO->hasNoUnsignedWrap())
setFlags(Flags, SCEV::FlagNUW);
Flags = setFlags(Flags, SCEV::FlagNUW);
return getAddExpr(AddOps, Flags);
}
case Instruction::Mul: {