* i386.h (CONDITIONAL_CALL_USAGE): SSE regs are not used for w64 ABI.

	* i386.h (CONDITIONAL_CALL_USAGE): SSE regs are not used for w64 ABI.
	* i386.c (struct ix86_frame): Add padding0 and nsseregs.
	(ix86_nsaved_regs): Count only general purpose regs.
	(ix86_nsaved_sseregs): New.
	(ix86_compute_frame_layout): Update nsseregs; set preferred alignment
	to 16 for w64; compute padding and size of sse reg save area.
	(ix86_emit_save_regs, ix86_emit_save_regs_using_mov): Save only general
	purpose regs.
	(ix86_emit_save_sse_regs_using_mov): New.
	(ix86_expand_prologue): Save SSE regs if needed.
	(ix86_emit_restore_regs_using_mov): Use only general purpose regs.
	(ix86_emit_restore_sse_regs_using_mov): New.
	(ix86_expand_epilogue): Save SSE regs if needed.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@143119 138bc75d-0d04-0410-961f-82ee72b054a4