[Bug middle-end/71062] [7 regression] r235622 and restrict pointers

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71062

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu May 12 13:05:13 2016
New Revision: 236174

URL: https://gcc.gnu.org/viewcvs?rev=236174&root=gcc&view=rev
Log:
2016-05-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71062
        * tree-ssa-alias.h (struct pt_solution): Add vars_contains_restrict
        field.
        * tree-ssa-structalias.c (set_uids_in_ptset): Set
vars_contains_restrict
        if the var is a restrict tag.
        * tree-ssa-alias.c (ptrs_compare_unequal): If vars_contains_restrict
        do not disambiguate pointers against it.
        (dump_points_to_solution): Re-structure and adjust for new
        vars_contains_restrict flag.
        * gimple-pretty-print.c (pp_points_to_solution): Likewise.

        * gcc.dg/torture/pr71062.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr71062.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-pretty-print.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c
    trunk/gcc/tree-ssa-alias.h
    trunk/gcc/tree-ssa-structalias.c