On 3/16/25 11:20 AM, Andrew Pinski wrote:
gcc/ChangeLog:
PR rtl-optimization/118914
* combine.cc (recog_for_combine): Add old_nregs and new_nregs
argument (defaulting to 0). Update call to recog_for_combine_1.
(combine_split_insns): Add old_nregs and new_nregs arg
On Sun, Mar 16, 2025 at 10:10 AM Jeff Law wrote:
>
>
>
> On 2/19/25 9:13 PM, Andrew Pinski wrote:
> > So gcc.target/aarch64/rev16_2.c started to fail after
> > r15-268-g9dbff9c05520a7,
> > the problem is combine now rejects the instruction combine. This happens
> > because
> > after a different
On 2/19/25 9:13 PM, Andrew Pinski wrote:
So gcc.target/aarch64/rev16_2.c started to fail after r15-268-g9dbff9c05520a7,
the problem is combine now rejects the instruction combine. This happens because
after a different combine which uses a define_split and that define_split
creates
a new pseu
> -Original Message-
> From: Andrew Pinski (QUIC)
> Sent: Wednesday, February 19, 2025 8:14 PM
> To: gcc-patches@gcc.gnu.org
> Cc: Andrew Pinski (QUIC)
> Subject: [PATCH] combine: Add REG_DEAD notes to the last
> instruction after a split [PR118914]
>
> So g
So gcc.target/aarch64/rev16_2.c started to fail after r15-268-g9dbff9c05520a7,
the problem is combine now rejects the instruction combine. This happens because
after a different combine which uses a define_split and that define_split
creates
a new pseudo register. That new pseudo register is dead
