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Subject: [Bug tree-optimization/106513] [10/11/12/13 Regression] bswap pass
 misses that >>56 for signed types can be replicate the sign bit
Date: Wed, 10 Aug 2022 14:40:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106513

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:ab2ca2dbd528f0564b80fa0e6eda96e0237742bc

commit r12-8677-gab2ca2dbd528f0564b80fa0e6eda96e0237742bc
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Aug 10 15:45:22 2022 +0200

    tree-optimization/106513 - fix mistake in bswap symbolic number shifts

    This fixes a mistake in typing a local variable in the symbolic
    shift routine.

            PR tree-optimization/106513
            * gimple-ssa-store-merging.cc (do_shift_rotate): Use uint64_t
            for head_marker.

            * gcc.dg/torture/pr106513.c: New testcase.

    (cherry picked from commit f675afa4eeac9910a2c085a95aa04d6d9f2fd8d6)=