[Bug tree-optimization/79803] [5/6/7 Regression] ICE in tree_ssa_prefetch_arrays, at tree-ssa-loop-prefetch.c:1982

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79803

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Mar  3 11:53:56 2017
New Revision: 245869

URL: https://gcc.gnu.org/viewcvs?rev=245869&root=gcc&view=rev
Log:
Add -Wdisabled-optimization to loop prefetching pass (PR
tree-optimization/79803).

2017-03-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/79803
        * tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Remove
        assert.
        (pass_loop_prefetch::execute): Disabled optimization if an
        assumption about L1 cache size is not met.
2017-03-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/79803
        * gcc.dg/tree-ssa/pr79803.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr79803.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-prefetch.c