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Strengthen the boundary conditions of this fold, implementing

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InstCombine/set.ll:test25


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35852 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-04-09 23:52:13 +00:00
parent 5c05fa0d0b
commit 81973ef7cb
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -4741,13 +4741,13 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
case ICmpInst::ICMP_ULT:
if (Max.ult(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getTrue());
if (Min.ugt(RHSVal))
if (Min.uge(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getFalse());
break;
case ICmpInst::ICMP_UGT:
if (Min.ugt(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getTrue());
if (Max.ult(RHSVal))
if (Max.ule(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getFalse());
break;
case ICmpInst::ICMP_SLT:
@ -4759,7 +4759,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
case ICmpInst::ICMP_SGT:
if (Min.sgt(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getTrue());
if (Max.slt(RHSVal))
if (Max.sle(RHSVal))
return ReplaceInstUsesWith(I, ConstantInt::getFalse());
break;
}