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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97737

--- Comment #5 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:129e1a8a96d140150705fab30d25afb464eb1d99

commit r11-4795-g129e1a8a96d140150705fab30d25afb464eb1d99
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Fri Nov 6 14:14:46 2020 -0500

    Combine new calculated ranges with existing range.

    When a range is recalculated, retain what was previously known as IL
changes
    can produce different results from un-executed code.   This also paves
    the way for external injection of ranges.

            gcc/
            PR tree-optimization/97737
            PR tree-optimization/97741
            * gimple-range.cc: (gimple_ranger::range_of_stmt): Intersect ne=
wly
            calculated ranges with the existing known global range.
            gcc/testsuite/
            * gcc.dg/pr97737.c: New.
            * gcc.dg/pr97741.c: New.=