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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/112325] Missed vectorization of reduction
 after unrolling
Date: Mon, 20 Nov 2023 02:52:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112325

--- Comment #7 from CVS 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:2b59e2b4dff42118fe3a505f07b9a6aa4cf53bdf

commit r14-5603-g2b59e2b4dff42118fe3a505f07b9a6aa4cf53bdf
Author: liuhongt <hongtao.liu@intel.com>
Date:   Thu Nov 16 18:38:39 2023 +0800

    Support reduc_{plus,xor,and,ior}_scal_m for vector integer mode.

    BB vectorizer relies on the backend support of
    .REDUC_{PLUS,IOR,XOR,AND} to vectorize reduction.

    gcc/ChangeLog:

            PR target/112325
            * config/i386/sse.md (reduc_<code>_scal_<mode>): New expander.
            (REDUC_ANY_LOGIC_MODE): New iterator.
            (REDUC_PLUS_MODE): Extend to VxHI/SI/DImode.
            (REDUC_SSE_PLUS_MODE): Ditto.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr112325-1.c: New test.
            * gcc.target/i386/pr112325-2.c: New test.=