[Bug tree-optimization/95836] Failure to remove strchr converted to bool with string literal when bit magic would be much more efficient (and sometimes smaller)
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Jun 23 09:48:36 GMT 2020
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95836
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With & it would actually invoke UB for c >= 64U.
So it has to be either &&, or << (c & 63), at least until we know exactly what
the behavior on out of bounds shift will be.
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