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[VectorCombine] skip debug intrinsics first for efficiency

This commit is contained in:
Sanjay Patel 2020-03-29 13:58:04 -04:00
parent febcb24f14
commit fc3cc8a4b0
1 changed files with 4 additions and 1 deletions
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5
llvm/lib/Transforms/Vectorize/VectorCombine.cpp
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@ -261,8 +261,11 @@ static bool runImpl(Function &F, const TargetTransformInfo &TTI,
// use->defs, so we're more likely to succeed by starting from the bottom.
// TODO: It could be more efficient to remove dead instructions
// iteratively in this loop rather than waiting until the end.
for (Instruction &I : make_range(BB.rbegin(), BB.rend()))
for (Instruction &I : make_range(BB.rbegin(), BB.rend())) {
if (isa<DbgInfoIntrinsic>(I))
continue;
MadeChange |= foldExtractExtract(I, TTI);
}
}
// We're done with transforms, so remove dead instructions.