re PR debug/59575 (ICE in maybe_record_trace_start, at dwarf2cfi.c:2239)

re PR debug/59575 (ICE in maybe_record_trace_start, at dwarf2cfi.c:2239)

	PR target/59575
	* config/arm/arm.c (emit_multi_reg_push): Add dwarf_regs_mask argument,
	don't record in REG_FRAME_RELATED_EXPR registers not set in that
	bitmask.
	(arm_expand_prologue): Adjust all callers.
	(arm_unwind_emit_sequence): Allow saved, but not important for unwind
	info, registers also at the lowest numbered registers side.  Use
	gcc_assert instead of abort, and SET_SRC/SET_DEST macros instead of
	XEXP.

	* gcc.target/arm/pr59575.c: New test.

From-SVN: r207563