[GOOGLE] disable slp for AutoFDO

[Dehao Chen]

This patch disables SLP for AutoFDO.

Bootstrapped and passed unittests.

OK for google-4_8?

Thanks,
Dehao

Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 202709)
+++ gcc/opts.c (working copy)
@@ -1661,9 +1661,6 @@ common_handle_option (struct gcc_options *opts,
       if (!opts_set->x_flag_tree_loop_vectorize
           && !opts_set->x_flag_tree_vectorize)
  opts->x_flag_tree_loop_vectorize = value;
-      if (!opts_set->x_flag_tree_slp_vectorize
-          && !opts_set->x_flag_tree_vectorize)
- opts->x_flag_tree_slp_vectorize = value;
       if (!opts_set->x_flag_vect_cost_model)
  opts->x_flag_vect_cost_model = value;
       if (!opts_set->x_flag_tree_loop_distribute_patterns)