i386.c (ix86_compute_frame_layout): Re-align stack after saving registers.

i386.c (ix86_compute_frame_layout): Re-align stack after saving registers.

	* config/i386/i386.c (ix86_compute_frame_layout): Re-align stack
	after saving registers.  Assert that SSE registers are only saved
	with a sufficiently aligned frame.
	(ix86_emit_save_reg_using_mov): Assert realigned only with DRAP;
	remove stack_realign_fp handling.
	(ix86_expand_prologue): Save int registers before stack_realign_fp,
	and do not mark the stack alignment as frame related.
	(ix86_expand_epilogue): SP is now invalid with stack_realign_fp.

	* dwarf2out.c (dwarf2out_frame_debug_expr): Flush queued register
	saves when re-aligning the stack.

From-SVN: r163068