[Bug tree-optimization/92645] Hand written vector code is 450 times slower when compiled with GCC compared to Clang

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92645

--- Comment #28 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:d88beb57baf5f96779ddfb5cbe1cff40d8b2be9d

commit r17-3912-gd88beb57baf5f96779ddfb5cbe1cff40d8b2be9d
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Aug 29 07:50:35 2026 +0800

    x86: Compile PR 92645 test with -mno-avx

    Compile PR 92645 test with -mno-avx to avoid

    FAIL: gcc.target/i386/pr92645.c scan-tree-dump-times optimized
"vec_unpack_" 4

    when AVX or AVX512 are enabled by default

            PR testsuite/126923
            * gcc.target/i386/pr92645.c (dg-options): Add -mno-avx.

    Signed-off-by: H.J. Lu <hjl.tools@gmail.com>