xtensa.c (xtensa_expand_prologue): Put a REG_FRAME_RELATED_EXPR note on the last...

xtensa.c (xtensa_expand_prologue): Put a REG_FRAME_RELATED_EXPR note on the last insn that sets up the stack...

	* config/xtensa/xtensa.c (xtensa_expand_prologue): Put a
	REG_FRAME_RELATED_EXPR note on the last insn that sets up the stack
	pointer or frame pointer.
	* config/xtensa/xtensa.h (DWARF_UNWIND_INFO): Delete.
	(MUST_USE_SJLJ_EXCEPTIONS): Define.
	(DWARF2_UNWIND_INFO): Define.
	(INCOMING_RETURN_ADDR_RTX): Define.
	(DWARF_FRAME_RETURN_COLUMN): Define.

From-SVN: r129854