[Bug tree-optimization/89509] restrict doesnt work with subfield accesses

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89509

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu May  2 14:05:27 2019
New Revision: 270799

URL: https://gcc.gnu.org/viewcvs?rev=270799&root=gcc&view=rev
Log:
2019-05-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89509
        * tree-ssa-structalias.c (compute_dependence_clique): Look
        at the first subvar when determining whether it is restrict.

        * gcc.dg/torture/restrict-8.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/restrict-8.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-structalias.c