RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 19:52:54 +01:00
Code Issues Projects Releases Wiki Activity

a missed optimization that Eli spotted

Browse Source 
llvm-svn: 53449
This commit is contained in:
Chris Lattner 2008-07-11 06:40:29 +00:00
parent 34b0895d4d
commit 07bfade2d4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -5336,7 +5336,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
case ICmpInst::ICMP_SLT:
if (Max.slt(RHSVal)) // A <s C -> true iff max(A) < C
return ReplaceInstUsesWith(I, ConstantInt::getTrue());
if (Min.sgt(RHSVal)) // A <s C -> false iff min(A) >= C
if (Min.sge(RHSVal)) // A <s C -> false iff min(A) >= C
return ReplaceInstUsesWith(I, ConstantInt::getFalse());
if (RHSVal == Max) // A <s MAX -> A != MAX
return new ICmpInst(ICmpInst::ICMP_NE, Op0, Op1);