[Bug tree-optimization/46184] [4.6 Regression] ICE: SIGSEGV in vectorizable_reduction (tree-vect-loop.c:4067) with -O -ftree-vectorize -fno-tree-copy-prop -fno-tree-dce

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46184

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-02 
15:46:50 UTC ---
Author: rguenth
Date: Tue Nov  2 15:46:46 2010
New Revision: 166194

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166194
Log:
2010-11-02  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/46184
    * tree-vect-loop.c (vectorizable_reduction): Try to obtain the
    input vector type from the reduction operand as well.

    * gcc.dg/pr46184.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr46184.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c