[Bug tree-optimization/79409] [7 Regression] [graphite] ICE in outermost_loop_in_sese, at sese.c:300 w/ -fgraphite-identity -ftree-loop-distribution -O1 (or above)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79409

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb  8 13:13:53 2017
New Revision: 245278

URL: https://gcc.gnu.org/viewcvs?rev=245278&root=gcc&view=rev
Log:
2017-02-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2017-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71824
        PR tree-optimization/79409
        * gcc.dg/graphite/pr71824-3.c: New testcase.

        2017-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71824
        * graphite-scop-detection.c (scop_detection::build_scop_breadth):
        Check all loops contained in the merged region.

        * gcc.dg/graphite/pr71824-2.c: New testcase.

        2017-02-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71824
        * graphite-scop-detection.c (scop_detection::build_scop_breadth):
        Verify the loops are valid in the merged SESE region.
        (scop_detection::can_represent_loop_1): Check analyzing the
        evolution of the number of iterations in the region succeeds.

        * gcc.dg/graphite/pr71824.c: New testcase.

        2017-01-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77318
        * graphite-sese-to-poly.c (extract_affine): Fix assert.
        (create_pw_aff_from_tree): Take loop parameter.
        (add_condition_to_pbb): Pass loop of the condition to
        create_pw_aff_from_tree.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/graphite/pr71824-2.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/graphite/pr71824-3.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/graphite/pr71824.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/graphite-scop-detection.c
    branches/gcc-6-branch/gcc/graphite-sese-to-poly.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog