runtime: Fix build on systems without split stack.

From Uros Bizjak.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203703 138bc75d-0d04-0410-961f-82ee72b054a4
[AArch64] Classify FRAME_POINTER_REGNUM and ARG_POINTER_REGNUM as POINTER_REGS.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203707 138bc75d-0d04-0410-961f-82ee72b054a4