ThinLTO disables autovectorization which can have substantial performance impacts. |
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Issue descriptionSplit out from issue 738085 ; where we noticed that previously autovectorized C++ stopped performing well when ThinLTO was enabled. @pcc, is there a clang bug for this?
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Aug 13
Filed https://bugs.llvm.org/show_bug.cgi?id=38551 No other progress as far as I'm aware. I know what needs to be done, just need to find some time to do it. |
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Comment 1 by dalecur...@chromium.org
, Aug 13