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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/115462] [15 regression] 416.gamess regressed 4-6% on
 x86_64 since r15-882-g1d6199e5f8c1c0
Date: Thu, 27 Jun 2024 06:14:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115462

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:b8153b5417bed02f47354a14ad36100785dfdc47

commit r15-1673-gb8153b5417bed02f47354a14ad36100785dfdc47
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Jun 24 17:53:22 2024 +0800

    Fix wrong cost of MEM when addr is a lea.

    416.gamess regressed 4-6% on x86_64 since my r15-882-g1d6199e5f8c1c0.
    The commit adjust rtx_cost of mem to reduce cost of (add op0 disp).
    But Cost of ADDR could be cheaper than XEXP (addr, 0) when it's a lea.
    It is the case in the PR, the patch adjust rtx_cost to only handle reg
    + disp, for other forms, they're basically all LEA which doesn't have
    additional cost of ADD.

    gcc/ChangeLog:

            PR target/115462
            * config/i386/i386.cc (ix86_rtx_costs): Make cost of MEM (reg +
            disp) just a little bit more than MEM (reg).

    gcc/testsuite/ChangeLog:
            * gcc.target/i386/pr115462.c: New test.=