[Bug rtl-optimization/110215] RA fails to allocate register when loop invariant lives across calls and eh

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110215

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Vladimir Makarov <vmakarov@gcc.gnu.org>:

https://gcc.gnu.org/g:154c69039571c66b3a6d16ecfa9e6ff22942f59f

commit r14-1891-g154c69039571c66b3a6d16ecfa9e6ff22942f59f
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Fri Jun 16 11:12:32 2023 -0400

    RA: Ignore conflicts for some pseudos from insns throwing a final exception

    IRA adds conflicts to the pseudos from insns can throw exceptions
    internally even if the exception code is final for the function and
    the pseudo value is not used in the exception code.  This results in
    spilling a pseudo in a loop (see
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110215).

    The following patch fixes the problem.

            PR rtl-optimization/110215

    gcc/ChangeLog:

            * ira-lives.cc: Include except.h.
            (process_bb_node_lives): Ignore conflicts from cleanup exceptions
            when the pseudo does not live at the exception landing pad.