https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107273
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|DUPLICATE |---
Last reconfirmed| |2022-10-17
Status|RESOLVED |REOPENED
Ever confirmed|0 |1
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Hongtao.liu from comment #4)
> Looks like the same issue as PR107172 since below change can also pass all
> the testcase in the PR.
>
> diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
> index 8e847520491..be815341af5 100644
> --- a/gcc/config/i386/i386.md
> +++ b/gcc/config/i386/i386.md
> @@ -21335,7 +21335,7 @@ (define_insn "*x86_mov<mode>cc_0_m1_neg"
> (define_expand "x86_mov<mode>cc_0_m1_neg"
> [(parallel
> [(set (match_operand:SWI48 0 "register_operand")
> - (neg:SWI48 (ltu:SWI48 (reg:CCC FLAGS_REG) (const_int 0))))
> + (neg:SWI48 (ltu:SWI48 (reg:CC FLAGS_REG) (const_int 0))))
> (clobber (reg:CC FLAGS_REG))])])
>
> (define_split
This doesn't fix the -O3 issue in the first testcase nor the second testcase.
