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Subject: [Bug tree-optimization/103184] [12 Regression] ICE  caused by 
 r12-5102
Date: Mon, 15 Nov 2021 20:59:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103184

--- Comment #8 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:4c19122bf5afa5cb479fd9445f0c591c52add09b

commit r12-5282-g4c19122bf5afa5cb479fd9445f0c591c52add09b
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Nov 12 07:21:43 2021 -0800

    Check optab before transforming atomic bit test and operations

    Check optab before transforming equivalent, but slighly different cases
    of atomic bit test and operations to their canonical forms.

    gcc/

            PR middle-end/103184
            * tree-ssa-ccp.c (optimize_atomic_bit_test_and): Check optab
            before transforming equivalent, but slighly different cases to
            their canonical forms.

    gcc/testsuite/

            PR middle-end/103184
            * gcc.dg/pr103184-1.c: New test.
            * gcc.dg/pr103184-2.c: Likewise.=