* i386.h (ix86_size_cost): Declare.

	* i386.h (ix86_size_cost): Declare.
	(ix86_cur_cost): New function macro.
	* i386.md (peepholes expanding size and splitters): Predicate by
	optimize_insn_for_speed_p.
	(peepholes reduce size and splitters): Predicate by
	optimize_insn_for_size_p.
	* i386.c (ix86_size_cost): Rename from ...
	(size_cost): This one.
	(override_options): Update.
	(decide_alg): Likewise.
	(ix86_expand_clear): Use RTL profile.
	(ix86_pad_returns): Use RTL profile.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@138864 138bc75d-0d04-0410-961f-82ee72b054a4