* config/arm/arm.c (use_return_insn): Not a single instruction, if

	there's a frame pointer.
	(arm_output_epilogue): Protect stack pointer from being corrupted
	on interrupt.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72606 138bc75d-0d04-0410-961f-82ee72b054a4