[Bug tree-optimization/46723] [4.5/4.6 Regression] internal compiler error: in get_initial_def_for_induction, at tree-vect-loop.c:2431

[rguenth at gcc dot gnu.org]

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

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-12-02 
16:23:26 UTC ---
Author: rguenth
Date: Thu Dec  2 16:23:20 2010
New Revision: 167377

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167377
Log:
2010-12-02  Richard Guenther  <rguent...@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:
    trunk/gcc/testsuite/gcc.dg/torture/pr46723.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree-vect-stmts.c