[Bug tree-optimization/84117] [8 Regression] ICE in gimplify_modify_expr, at gimplify.c:5798

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84117

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Mar  3 13:25:27 2018
New Revision: 258183

URL: https://gcc.gnu.org/viewcvs?rev=258183&root=gcc&view=rev
Log:
        Backported from mainline
        2018-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/81661
        PR tree-optimization/84117
        * tree-eh.h (rewrite_to_non_trapping_overflow): Declare.
        * tree-eh.c: Include gimplify.h.
        (find_trapping_overflow, replace_trapping_overflow,
        rewrite_to_non_trapping_overflow): New functions.
        * tree-vect-loop.c: Include tree-eh.h.
        (vect_get_loop_niters): Use rewrite_to_non_trapping_overflow.

        * gcc.dg/pr81661.c: New test.
        * gfortran.dg/pr84117.f90: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr81661.c
    branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr84117.f90
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/tree-eh.c
    branches/gcc-7-branch/gcc/tree-eh.h
    branches/gcc-7-branch/gcc/tree-vect-loop.c