> -Original Message-
> From: Uros Bizjak
> Sent: Wednesday, June 25, 2025 12:53 AM
> To: gcc-patches@gcc.gnu.org
> Cc: Cui, Lili
> Subject: [committed] i386: Convert LEA stack adjust insn to SUB when
> FLAGS_REG is dead
>
> ADD/SUB is faster than LEA for most
ADD/SUB is faster than LEA for most processors. Also, there are
several peephole2 patterns available that convert prologue esp
subtractions to pushes (at the end of i386.md). These process only
patterns with flags reg clobber, so they are ineffective
with clobber-less stack ptr adjustments, introdu
