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a missed optimization that Eli spotted

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53449 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-07-11 06:40:29 +00:00
parent f9685ac68e
commit d01bee7170
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -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);