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cmp117
2017 Jan 24
3
[InstCombine] rL292492 affected LoopVectorizer and caused 17.30%/11.37% perf regressions on Cortex-A53/Cortex-A15 LNT machines
On Tue, Jan 24, 2017 at 1:20 PM, Sanjay Patel via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
>
> I started looking at the log files that you attached, and I'm confused.
> The code that is supposedly causing the perf regression is created by the
> loop vectorizer, right? Except the bad code is not in the "vector.body", so
> is there something peculiar about