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Don't crash when dealing with INTMIN. This fixes PR585 and

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Transforms/InstCombine/2005-06-16-RangeCrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22234 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-06-17 02:05:55 +00:00
parent 98b4d59861
commit 5662503afd
1 changed files with 2 additions and 0 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -2699,6 +2699,8 @@ Instruction *InstCombiner::visitSetCondInst(SetCondInst &I) {
if (CI->isNullValue()) { // (X / neg) op 0
LoBound = AddOne(DivRHS);
HiBound = cast<ConstantInt>(ConstantExpr::getNeg(DivRHS));
if (HiBound == DivRHS)
LoBound = 0; // - INTMIN = INTMIN
} else if (isPositive(CI)) { // (X / neg) op pos
HiOverflow = LoOverflow = ProdOV;
if (!LoOverflow)