[Bug tree-optimization/78888] toupper(x) can be assumed not to be in the range 'a' - 'z'

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78888

--- Comment #4 from CVS 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:d5a8c1382718ae084d46ff9b8a26d6b1d0cb684c

commit r12-2519-gd5a8c1382718ae084d46ff9b8a26d6b1d0cb684c
Author: Andrew MacLeod <amacl...@redhat.com>
Date:   Mon Jul 26 17:25:06 2021 -0400

    Confirm and Handle only ASCII in toupper and tolower ranges.

            PR tree-optimization/78888
            * gimple-range-fold.cc (get_letter_range): New.
            (fold_using_range::range_of_builtin_call): Call get_letter_range.