2017-05-16  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	* config/i386/i386.c (x86_64_ms_sysv_extra_clobbered_registers): Make
	static.
	(xlogue_layout::get_stack_space_used, xlogue_layout::s_instances,
	xlogue_layout::get_instance, logue_layout::xlogue_layout,
	xlogue_layout::get_stub_name, xlogue_layout::get_stub_rtx,
	sp_valid_at, fp_valid_at, choose_basereg): Formatting.
	(xlogue_layout::compute_stub_managed_regs): Clear out param first.
	(stub_managed_regs): Remove.
	(ix86_save_reg): Use xlogue_layout::compute_stub_managed_regs.
	(disable_call_ms2sysv_xlogues): Rename to...
	(warn_once_call_ms2sysv_xlogues): ...this, and warn only once.
	(ix86_initial_elimination_offset, ix86_expand_call): Fix call_ms2sysv
	warning logic.
	(ix86_static_chain): Make sure that ix86_static_chain_on_stack can't
	change after reload_completed.
	(ix86_can_use_return_insn_p): Use the ix86_frame data structure
	directly.
	(ix86_expand_prologue): Likewise.
	(ix86_expand_epilogue): Likewise.
	(ix86_expand_split_stack_prologue): Likewise.
	(ix86_compute_frame_layout): Remove frame parameter ...
	(TARGET_COMPUTE_FRAME_LAYOUT): ... and export it as a target hook.
	(ix86_finalize_stack_realign_flags): Call ix86_compute_frame_layout
	only if necessary.
	(ix86_init_machine_status): Don't set use_fast_prologue_epilogue_nregs.
	(ix86_frame): Move from here ...
	* config/i386/i386.h (ix86_frame): ... to here.
	(machine_function): Remove use_fast_prologue_epilogue_nregs, cache the
	complete ix86_frame data structure instead.