https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127900
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2026-10-15
Status|UNCONFIRMED |NEW
Target| |x86_64-*-*
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder if mulx should not be simply another alternative of generic 64x64->128
widening multiplication that is preferably chosen when flags are not needed?
But maybe that flag generation difference prevents them to be used in the same
pattern? Both instructions have RA constraints, but mulx has less.
