invoke.texi (profile-use): update documentation.

invoke.texi (profile-use): update documentation.

	* invoke.texi (profile-use): update documentation.
	* opts.c (common_handle_option): Enable tree-vectorize
	and tree-loop-distribute-patterns.
	* tree-loop-distribution.c (tree_loop_distribution): Skip loops
	optimized for size.
	* config/i386/i386.c (ix86_option_override_internal): Enabe
	prefetch_lop_arrays for profile-use.

From-SVN: r193135