https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108938

--- Comment #11 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Jakub Jelinek from comment #9)
> Though, if more than one replacement operation is emitted, one needs to be
> careful not to emit more expensive replacement than the original sequence
> (especially if some subexpressions aren't single use).

The patch(support swap + bit_and + rotate) doesn't show much impact on
SPEC2017, is there any other benchmark that I can try to find some performance
regressiones with bswap + bit_and + rotate?
So that I'll restrict the patch to only bswp + rotate/shift.

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