[Bug tree-optimization/53693] [4.7 regression] ICE in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1438

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53693

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-06 
09:21:39 UTC ---
Author: rguenth
Date: Fri Jul  6 09:21:36 2012
New Revision: 189313

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189313
Log:
2012-07-06  Richard Guenther  <rguent...@suse.de>

    Backport from mainline
    2012-06-18  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/53693
    * tree-vect-patterns.c (vect_operation_fits_smaller_type):
    Reject operands with more than one use.

    * g++.dg/torture/pr53693.C: New testcase.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/g++.dg/torture/pr53693.C
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-vect-patterns.c