[Bug middle-end/118994] GCC fails to optimize (a >> 1) + (b >> 1) + ((a | b) & 1) to PAVGB/PAVGW (or equivalent instruction)

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118994

Hongtao Liu <liuhongt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |liuhongt at gcc dot gnu.org

--- Comment #1 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Adding pattern match in match.pd to transform (a >> 1) + (b >> 1) + ((a | b) &
1) to .AVG_CEIL (a, b)?