[Bug tree-optimization/80788] [8 Regression] ICE in set_value_range, at tree-vrp.c:252

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80788

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Nov 28 08:40:36 2017
New Revision: 255191

URL: https://gcc.gnu.org/viewcvs?rev=255191&root=gcc&view=rev
Log:
        PR tree-optimization/80788
        * match.pd (X +- C1 CMP C2 -> X CMP C2 -+ C1): If res
        has TREE_OVERFLOW set, call drop_tree_overflow.

        * gcc.dg/pr80788.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr80788.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog