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Subject: [Bug tree-optimization/52298] ICE: verify_ssa failed: definition in block follows use
Date: Mon, 20 Feb 2012 15:19:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52298

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-20 15:16:00 UTC ---
Author: rguenth
Date: Mon Feb 20 15:15:52 2012
New Revision: 184396

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184396
Log:
2012-02-20  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/52298
    * tree-vect-stmts.c (vectorizable_store): Properly use
    STMT_VINFO_DR_STEP instead of DR_STEP when vectorizing
    outer loops.
    (vectorizable_load): Likewise.
    * tree-vect-data-refs.c (vect_analyze_data_ref_access):
    Access DR_STEP after ensuring it is not NULL.

    * gcc.dg/torture/pr52298.c: New testcase.
    * gcc.dg/vect/pr52298.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr52298.c
    trunk/gcc/testsuite/gcc.dg/vect/pr52298.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c
    trunk/gcc/tree-vect-stmts.c