* config/i386/i386.opt: Add option -moutline-msabi-xlogues.

	* config/i386/i386.h
	(x86_64_ms_sysv_extra_clobbered_registers): Change type to unsigned.
	(NUM_X86_64_MS_CLOBBERED_REGS): New macro.
	(struct machine_function): Add new members outline_ms_sysv,
	outline_ms_sysv_pad_in, outline_ms_sysv_pad_out and
	outline_ms_sysv_extra_regs.

	* config/i386/i386.c
	(enum xlogue_stub): New enum.
	(enum xlogue_stub_sets): New enum.
	(class xlogue_layout): New class.
	(struct ix86_frame): Add outlined_save_offset member, modify comments
	to detail stack layout when using out-of-line stubs.
	(ix86_target_string): Add -moutline-msabi-xlogues option.

	(stub_managed_regs): New static variable.
	(ix86_save_reg): Add new parameter ignore_outlined to optionally omit
	registers managed by out-of-line stub.
	(ix86_nsaved_regs): Modify to accommodate changes to ix86_save_reg.
	(ix86_nsaved_sseregs): Likewise.
	(ix86_emit_save_regs): Likewise.
	(ix86_emit_save_regs_using_mov): Likewise.
	(ix86_emit_save_sse_regs_using_mov): Likewise.
	(get_scratch_register_on_entry): Likewise.
	(ix86_compute_frame_layout): Modify to disable m->outline_ms_sysv when
	appropriate and compute frame layout for out-of-line stubs.
	(gen_frame_set): New function.
	(gen_frame_load): Likewise.
	(gen_frame_store): Likewise.
	(emit_msabi_outlined_save): Likewise.
	(ix86_expand_prologue): Modify to call emit_msabi_outlined_save when
	appropriate.
	(ix86_emit_leave): Add parameter rtx_insn *insn, allowing it to be used
	to only generate the notes.
	(emit_msabi_outlined_restore): New function.
	(ix86_expand_epilogue): Modify to call emit_msabi_outlined_restore when
	appropriate.
	(ix86_expand_call): Modify to enable m->outline_ms_sysv when
	appropriate.

	* config/i386/predicates.md
	(save_multiple): New predicate.
	(restore_multiple): Likewise.
	* config/i386/sse.md
	(save_multiple<mode>): New pattern.
	(save_multiple_realign<mode>): Likewise.
	(restore_multiple<mode>): Likewise.
	(restore_multiple_and_return<mode>): Likewise.
	(restore_multiple_leave_return<mode>): Likewise.