[Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-05 
11:24:30 UTC ---
Author: rguenth
Date: Tue Jul  5 11:24:26 2011
New Revision: 175847

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175847
Log:
2011-07-05  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/49518
    PR tree-optimization/49628
    * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Skip
    irrelevant and invariant data-references.
    (vect_analyze_data_ref_access): For invariant loads clear the
    group association.

    * g++.dg/torture/pr49628.C: New testcase.
    * gcc.dg/torture/pr49518.c: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr49628.C
    trunk/gcc/testsuite/gcc.dg/torture/pr49518.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c