[Bug target/109276] [11/12/13 Regression] ICE: in assign_stack_local_1, at function.cc:429 with -mpreferred-stack-boundary=2

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109276

--- Comment #15 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #13)
> asks for a DImode stack slot, ix86_local_alignment newly doesn't lower the
> alignment
> which isn't good for -mpreferred-stack-boundary=2.

IIRC, DImode FILD/FIST(P) instructions execute faster when memory is aligned to
64 bits. *If* it is possible, 64 bit alignment is preferred.