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[msan] Fix handling of select with vector condition.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171069 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov
2012-12-25 14:56:21 +00:00
parent 50ec431c9f
commit 6607716368
2 changed files with 28 additions and 2 deletions
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13
lib/Transforms/Instrumentation/MemorySanitizer.cpp
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@ -1566,9 +1566,18 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
setShadow(&I, IRB.CreateSelect(I.getCondition(),
getShadow(I.getTrueValue()), getShadow(I.getFalseValue()),
"_msprop"));
if (MS.TrackOrigins)
setOrigin(&I, IRB.CreateSelect(I.getCondition(),
if (MS.TrackOrigins) {
// Origins are always i32, so any vector conditions must be flattened.
// FIXME: consider tracking vector origins for app vectors?
Value *Cond = I.getCondition();
if (Cond->getType()->isVectorTy()) {
Value *ConvertedShadow = convertToShadowTyNoVec(Cond, IRB);
Cond = IRB.CreateICmpNE(ConvertedShadow,
getCleanShadow(ConvertedShadow), "_mso_select");
}
setOrigin(&I, IRB.CreateSelect(Cond,
getOrigin(I.getTrueValue()), getOrigin(I.getFalseValue())));
}
}
void visitLandingPadInst(LandingPadInst &I) {