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Fix PR11948: the result type of an icmp may be a vector of boolean -

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don't assume it is a boolean.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150247 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2012-02-10 14:31:24 +00:00
parent edfb931edb
commit aa97bb54f0
2 changed files with 12 additions and 0 deletions
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5
lib/Analysis/InstructionSimplify.cpp
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@@ -476,6 +476,11 @@ static Value *ThreadCmpOverSelect(CmpInst::Predicate Pred, Value *LHS,
// the original comparison.
if (TCmp == FCmp)
return TCmp;
// The remaining cases only make sense if the select condition has the same
// type as the result of the comparison, so bail out if this is not so.
if (Cond->getType()->isVectorTy() != RHS->getType()->isVectorTy())
return 0;
// If the false value simplified to false, then the result of the compare
// is equal to "Cond && TCmp". This also catches the case when the false
// value simplified to false and the true value to true, returning "Cond".