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spirv-fuzz: Skip dead blocks in FuzzerPassAddOpPhiSynonyms (#3965)

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Fixes #3949.
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Alastair Donaldson 2020-10-21 20:49:33 +01:00 committed by GitHub
parent 5600fb85b6
commit 26954c281e
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1 changed files with 6 additions and 0 deletions
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6
source/fuzz/fuzzer_pass_add_opphi_synonyms.cpp
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@ -51,6 +51,12 @@ void FuzzerPassAddOpPhiSynonyms::Apply() {
continue;
}
// The block must not be dead.
if (GetTransformationContext()->GetFactManager()->BlockIsDead(
block.id())) {
continue;
}
// The block must have at least one predecessor.
size_t num_preds = GetIRContext()->cfg()->preds(block.id()).size();
if (num_preds == 0) {