https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93721
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-02-13
Component|target |tree-optimization
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>GCC for x86 emits the ROL instruction for T=char:
Because that is also bswap16 and is detected that way:).
This should be done in store_merging pass. Though enhancing that to do the
rotate rather than byteswap might be too hard.
Note this is not a target specific issue.
We should be able to do the rotate in a generic way for all targets.
