[Bug tree-optimization/116546] Missed optimization of redundant comparison

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116546

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andrew Macleod <amacl...@gcc.gnu.org>:

https://gcc.gnu.org/g:ac55655ce45a237a6a01e0cce50211841603c2ec

commit r16-665-gac55655ce45a237a6a01e0cce50211841603c2ec
Author: Andrew MacLeod <amacl...@redhat.com>
Date:   Wed May 14 11:32:58 2025 -0400

    Enhance bitwise_and::op1_range

    Any known bits from the LHS range can be used to specify known bits in
    the non-mask operand.

            PR tree-optimization/116546
            gcc/
            * range-op.cc (operator_bitwise_and::op1_range): Utilize bitmask
            from the LHS to improve op1's bitmask.

            gcc/testsuite/
            * gcc.dg/pr116546.c: New.