https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93505
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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Target Milestone|--- |8.4
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Just to quote
x = x >> __builtin_bswap64 (-a) | x << (-__builtin_bswap64 (-a) & 31);
with a == ~0. The right shift argument is > 31 which makes its behavior
undefined. Does adding a & 31 help?
