* builtin-attrs.def (ATTR_LEAF): New attribute.
	(ATTR_NOVOPS_LEAF_LIST, ATTR_LEAF_LIST, ATTR_NOTHROW_LEAF_LIST,
	ATTR_CONST_NOTHROW_LEAF_LIST, ATTR_PURE_NOTHROW_LEAF_LIST,
	ATTR_PURE_NOTHROW_NOVOPS_LEAF_LIST, ATTR_NORETURN_NOTHROW_LEAF_LIST,
	ATTR_MALLOC_NOTHROW_LEAF_LIST, ATTR_SENTINEL_NOTHROW_LEAF_LIST,
	ATTR_NOTHROW_NONNULL_LEAF, ATTR_CONST_NOTHROW_NONNULL_LEAF,
	ATTR_CONST_NOTHROW_TYPEGENERIC_LEAF, ATTR_PURE_NOTHROW_NONNULL_LEAF,
	ATTR_MALLOC_NOTHROW_NONNULL_LEAF): New attribute lists.
	* sync-builtins.def: Annotate all builtins by leaf.
	* omp-builtins.def: Annotate all builtins by leaf.
	* builtins.def: Annotate relevant builtins with leaf attribute.
	(ATTR_MATHFN_ERRNO, ATTR_MATHFN_FPROUNDING,
	ATTR_MATHFN_FPROUNDING_ERRNO, ATTR_MATHFN_FPROUNDING_STORE): Make
	leaf.
        * gcc-interface/utils.c (handle_leaf_attribute): New function.
        (gnat_internal_attribute_tables): Add leaf.

        * lto-lang.c (handle_leaf_attribute): New function.
        (lto_attribute_tables): Add leaf.

        * f95-lang.c (gfc_define_builtin): Make leaf.
        (gfc_init_builtin_functions): Handle only ATTR_CONST_NOTHROW_LEAF_LIST
        and ATTR_NOTHROW_LEAF_LIST.
        (DEF_SYNC_BUILTIN): Check ATTR_CONST_NOTHROW_LEAF_LIST.
        (DEF_GOMP_BUILTIN): Likewise.

From-SVN: r164689