[Bug tree-optimization/100781] [12 Regression] Emitted binary code changes when -g is enabled at -O2

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100781

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andrew Macleod <amacleod@gcc.gnu.org>:

https://gcc.gnu.org/g:715914d3f9e4e40af58d22103c7650cdd720ef92

commit r12-1137-g715914d3f9e4e40af58d22103c7650cdd720ef92
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Mon May 31 12:13:50 2021 -0400

    Do not calculate new values when evaluating a debug statement.

    Add a flag to enable/disable immediately improving poor values found during
    cache propagation. Then disable it when processing debug statements.

            gcc/
            PR tree-optimization/100781
            * gimple-range-cache.cc (ranger_cache::ranger_cache): Enable new
            value calculation by default.
            (ranger_cache::enable_new_values): New.
            (ranger_cache::disable_new_values): New.
            (ranger_cache::push_poor_value): Check if new values are allowed.
            * gimple-range-cache.h (class ranger_cache): New member/methods.
            * gimple-range.cc (gimple_ranger::range_of_expr): Check for debug
            statement, and disable/renable new value calculation.

            gcc/testsuite/
            PR tree-optimization/100781
            * gcc.dg/pr100781.c: New.