2010-10-07  Richard Guenther  <rguenther@suse.de>

	* target.def (autovectorize_vector_sizes): New target hook.
	* targhooks.c (default_autovectorize_vector_sizes): New function.
	* targhooks.h (default_autovectorize_vector_sizes): Declare.
	* doc/tm.texi.in (TARGET_VECTORIZE_AUTOVECTORIZE_VECTOR_SIZES):
	Document.
	* doc/tm.texi: Update.
	* config/i386/i386.c (ix86_autovectorize_vector_sizes): New function.
	(TARGET_VECTORIZE_AUTOVECTORIZE_VECTOR_SIZES): Define.

From-SVN: r165115