https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97873
Hongtao.liu <crazylht at gmail dot com> changed:
What |Removed |Added
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CC| |crazylht at gmail dot com
--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
>
> where the smax:SI is late splitted IIRC. That's probably not the optimal
> expansion choice.
>
> I remember a duplicate bug.
PR92651？
we introduce
(define_expand "abs<mode>2"
[(set (match_operand:SWI48x 0 "register_operand")
(abs:SWI48x
(match_operand:SWI48x 1 "register_operand")))]
"TARGET_EXPAND_ABS"
Compile with -O2 -march=corei7 got
abs(int):
movl %edi, %eax
cltd
xorl %edx, %eax
subl %edx, %eax
ret
