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Subject: [Bug target/99531] [9/10/11/12 Regression] Performance regression
 since gcc 9 (argument passing / register allocation)
Date: Mon, 13 Dec 2021 19:11:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99531

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

https://gcc.gnu.org/g:a7acb6dca941db2b1c135107dac3a34a20650d5c

commit r12-5944-ga7acb6dca941db2b1c135107dac3a34a20650d5c
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Mon Dec 13 13:48:12 2021 -0500

    [PR99531] Modify pseudo class cost calculation when processing move
involving the pseudo and a hard register

    Pseudo class calculated on the 1st iteration should not have a
    special treatment in cost calculation when processing move involving
    the pseudo and a hard register.

    gcc/ChangeLog:

            PR target/99531
            * ira-costs.c (record_operand_costs): Do not take pseudo class
            calculated on the 1st iteration into account when processing mo=
ve
            involving the pseudo and a hard register.

    gcc/testsuite/ChangeLog:

            PR target/99531
            * gcc.target/i386/pr99531.c: New test.=