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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/112919] LoongArch: Alignments in tune parameters are not
 precise and they regress performance
Date: Mon, 08 Apr 2024 01:04:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112919

--- Comment #22 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by LuluCheng <chenglulu@gcc.gnu.org>:

https://gcc.gnu.org/g:8f0ff6b998748f3581e0f06e3108193866b1209d

commit r14-9824-g8f0ff6b998748f3581e0f06e3108193866b1209d
Author: Lulu Cheng <chenglulu@loongson.cn>
Date:   Tue Apr 2 14:29:08 2024 +0800

    LoongArch: Set default alignment for functions jumps and loops [PR11291=
9].

    Xi Ruoyao set the alignment rules under LA464 in commit r14-1839,
    but the macro ASM_OUTPUT_ALIGN_WITH_NOP was removed in R14-4674,
    which affected the alignment rules.

    So I set different aligns on LA464 and LA664 again to test the
    performance of spec2006, and modify the alignment based on the test
    results.

    gcc/ChangeLog:

            PR target/112919
            * config/loongarch/loongarch-def.cc (la664_align): Newly defined
            function that sets alignment rules under the LA664
microarchitecture.
            * config/loongarch/loongarch-opts.cc
            (loongarch_target_option_override): If not optimizing for size,=
 set
            the default alignment to what the target wants.
            * config/loongarch/loongarch-tune.h (struct loongarch_align): A=
dd
            new member variables jump and loop.=