[Bug tree-optimization/46723] [4.5 Regression] internal compiler error: in get_initial_def_for_induction, at tree-vect-loop.c:2431

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46723

--- Comment #14 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-01 17:04:32 UTC ---
Author: rguenth
Date: Tue Mar  1 17:04:26 2011
New Revision: 170595

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170595
Log:
2011-03-01  Richard Guenther  <rguenther@suse.de>

        Backport from mainline
        2011-03-01  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/47890
    * tree-vect-loop.c (get_initial_def_for_induction): Set
    related stmt properly.

    * gcc.dg/torture/pr47890.c: New testcase.

        2010-12-01  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/46723
    * tree-vect-loop.c (get_initial_def_for_induction): Strip
    conversions from the induction evolution and apply it to
    the result instead.
    * tree-vect-stmts.c (vect_get_vec_def_for_operand): Handle
    assigns for induction defs.

    * gcc.dg/torture/pr46723.c: New testcase.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/torture/pr46723.c
    branches/gcc-4_5-branch/gcc/testsuite/gcc.dg/torture/pr47890.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_5-branch/gcc/tree-vect-loop.c
    branches/gcc-4_5-branch/gcc/tree-vect-stmts.c