Patch from Richard Sandiford <rsandifo@redhat.com>

	* reload1.c (choose_reload_regs): Prevent the find_equiv_reg() code
	from inheriting a subreg equivalence with a non-spill register.

	* tree.h (DECL_FUNCTION_CODE): Document that it is overloaded.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@94529 138bc75d-0d04-0410-961f-82ee72b054a4