[backport gcc10, gcc9] Requet to backport PR97969

[Vladimir Makarov]

On 2021-05-25 5:14 a.m., Przemyslaw Wirkus wrote:
> Hi,
> Just a follow up after GCC 11 release.
>
> I've backported to gcc-10 branch (without any change to original patches)
> PR97969 and following PR98722 & PR98777 patches.
>
> Commits apply cleanly without changes.
> Built and regression tested on:
> * arm-none-eabi and
> * aarch64-none-linux-gnu cross toolchains.
>
> There were no issues and no regressions (all OK).
>
> OK for backport to gcc-10 branch ?

Sorry for delay with the answer due to my vacation.

As the patches did not introduce new PRs I believe they are ok for gcc-10.

Thank you.

>
> Kind regards,
> Przemyslaw Wirkus
>
> ---
> commits I've backported:
>
> commit cf2ac1c30af0fa783c8d72e527904dda5d8cc330
> Author: Vladimir N. Makarov <vmakarov@redhat.com>
> Date:   Tue Jan 12 11:26:15 2021 -0500
>
>      [PR97969] LRA: Transform pattern `plus (plus (hard reg, const), pseudo)` after elimination
>
> commit 4334b524274203125193a08a8485250c41c2daa9
> Author: Vladimir N. Makarov <vmakarov@redhat.com>
> Date:   Wed Jan 20 11:40:14 2021 -0500
>
>      [PR98722] LRA: Check that target has no 3-op add insn to transform 2 plus expression.
>
> commit 68ba1039c7daf0485b167fe199ed7e8031158091
> Author: Vladimir N. Makarov <vmakarov@redhat.com>
> Date:   Thu Jan 21 17:27:01 2021 -0500
>
>      [PR98777] LRA: Use preliminary created pseudo for in LRA elimination subpass
>
> $ ./contrib/git-backport.py cf2ac1c30af0fa783c8d72e527904dda5d8cc330
> $ ./contrib/git-backport.py 4334b524274203125193a08a8485250c41c2daa9
> $ ./contrib/git-backport.py 68ba1039c7daf0485b167fe199ed7e8031158091
>
>
>> Richard.