[Bug fortran/86945] [8/9 Regression] BUG with optimisation of select case statement in gfortran

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86945

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 22 08:07:36 2018
New Revision: 263761

URL: https://gcc.gnu.org/viewcvs?rev=263761&root=gcc&view=rev
Log:
2018-08-22  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/86945
        * tree-cfg.c (generate_range_test): Use unsigned arithmetic.

        * gcc.dg/torture/pr86945.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr86945.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfg.c