[Bug tree-optimization/51799] [4.7 Regression] Compiler ICE in vect_is_simple_use_1

[irar at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51799

--- Comment #5 from irar at gcc dot gnu.org 2012-01-12 14:41:51 UTC ---
Author: irar
Date: Thu Jan 12 14:41:44 2012
New Revision: 183126

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183126
Log:

        PR tree-optimization/51799
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Check
        that the last operation is a type demotion.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr51799.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/vect-widen-shift-u8.c
    trunk/gcc/tree-vect-patterns.c