2015-07-09  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/66782
	* lra-int.h (struct lra_insn_recog_data): Add comment about
	clobbered hard regs for arg_hard_regs.
	* lra.c (lra_set_insn_recog_data): Add clobbered hard regs.
	* lra-lives.c (process_bb_lives): Process clobbered hard regs.
	Add condition for processing used hard regs.
	* lra-constraints.c (update_ebb_live_info, inherit_in_ebb):
	Process clobbered hard regs.

From-SVN: r225618