[Bug tree-optimization/49352] [4.7 Regression] -fcompare-debug failure with -O2 -ftree-vectorize

[irar at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49352

--- Comment #11 from irar at gcc dot gnu.org 2011-06-13 06:10:25 UTC ---
Author: irar
Date: Mon Jun 13 06:10:20 2011
New Revision: 174982

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174982
Log:

        PR tree-optimization/49352
        * tree-vect-loop.c (vect_is_slp_reduction): Don't count debug
        uses at all, make sure loop_use_stmt after the loop is a def
        stmt of a used SSA_NAME that is the only one defined inside
        of the loop.  Don't check for COND_EXPR and GIMPLE_BINARY_RHS.
        (vect_is_simple_reduction_1): Call vect_is_slp_reduction only
        if check_reduction is true.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr49352.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c