Backport from mainline

	Backport from mainline
	2012-07-23  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386-protos.h (ix86_lea_outperforms): Remove prototype.
	* config/i386/i386.c (ix86_lea_outperforms): Make static.  Make
	split_cost argument signed.
	(ix86_use_lea_for_mov): Use INVALID_REGNUM instead of -1.
	(ix86_avoid_lea_for_addr): Ditto.

	2012-07-27  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.c (ix86_avoid_lea_for_addr): Return false if
	the address has less than two components.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@190183 138bc75d-0d04-0410-961f-82ee72b054a4