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Subject: [Bug rtl-optimization/31799] Failed to optimize out test instruction
Date: Tue, 17 Nov 2020 14:05:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D31799

--- Comment #9 from CVS 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:7f87b4ef2323769bd71f7ccea2aa6017a7376f76

commit r11-5090-g7f87b4ef2323769bd71f7ccea2aa6017a7376f76
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Nov 17 06:01:41 2020 -0800

    x86: Add a testcase for PR target/31799

    Add a testcase for PR target/31799 which was fixed by

    commit 4f0473fe89e68bf7c09542ee5c3684da25a5b435
    Author: Uros Bizjak <ubizjak@gmail.com>
    Date:   Fri May 12 21:04:05 2017 +0200

        compare-elim.c (try_eliminate_compare): Canonicalize operation with
embedded compare to [(set (reg:CCM) (compare:CCM...

                * compare-elim.c (try_eliminate_compare): Canonicalize
                operation with embedded compare to
                [(set (reg:CCM) (compare:CCM (operation) (immediate)))
                 (set (reg) (operation)].

                * config/i386/i386.c (TARGET_FLAGS_REGNUM): New define.

    in GCC 8.

            PR target/31799
            * gcc.target/i386/pr31799.c: New test.=