https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90328

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon May  6 12:38:35 2019
New Revision: 270906

URL: https://gcc.gnu.org/viewcvs?rev=270906&root=gcc&view=rev
Log:
2019-05-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/90328
        * tree-data-ref.h (dr_may_alias_p): Pass in the actual loop nest.
        * tree-data-ref.c (dr_may_alias_p): Check whether the clique
        is valid in the loop nest before using it.
        (initialize_data_dependence_relation): Adjust.
        * graphite-scop-detection.c (build_alias_set): Pass the SCOP enclosing
        loop as loop-nest to dr_may_alias_p.

        * gcc.dg/torture/pr90328.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr90328.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/graphite-scop-detection.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-data-ref.c
    trunk/gcc/tree-data-ref.h

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