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0 pointsakshaykarthik3y ago0 comments

Interestingly enough, with `-C opt-level=3` both functions yield the same assembly.

I wonder if there's some pass that's missing or not done at the lower opt level.

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Might be a problem of the number of pass repetitions, where O2 does not rerun the vectorisation after whatever manages to unroll everything but O3 does.

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masklinn3y ago

Might be a problem of the number of pass repetitions, where O2 does not rerun the vectorisation after whatever manages to unroll everything but O3 does.

j / k navigate · click thread line to collapse