Add visibility to libfunc constructors

	* optabs-libfuncs.c (build_libfunc_function_visibility):
	New, split out from...
	(build_libfunc_function): ... here.
	(init_one_libfunc_visibility): New, split out from ...
	(init_one_libfunc): ... here.

From-SVN: r265704

gcc/ChangeLog

 2018-10-31  Richard Henderson  <richard.henderson@linaro.org>
 
+	* optabs-libfuncs.c (build_libfunc_function_visibility):
+	New, split out from...
+	(build_libfunc_function): ... here.
+	(init_one_libfunc_visibility): New, split out from ...
+	(init_one_libfunc): ... here.
+
 	* config/aarch64/atomics.md (aarch64_atomic_<ATOMIC_LDOP><ALLI>_lse):
 	scratch register need not be early-clobber.  Document the reason
 	why we cannot use ST<OP>.

gcc/optabs-libfuncs.c

@@ -719,10 +719,10 @@ struct libfunc_decl_hasher : ggc_ptr_hash<tree_node>
 /* A table of previously-created libfuncs, hashed by name.  */
 static GTY (()) hash_table<libfunc_decl_hasher> *libfunc_decls;
 
-/* Build a decl for a libfunc named NAME.  */
+/* Build a decl for a libfunc named NAME with visibility VIS.  */
 
 tree
-build_libfunc_function (const char *name)
+build_libfunc_function_visibility (const char *name, symbol_visibility vis)
 {
   /* ??? We don't have any type information; pretend this is "int foo ()".  */
   tree decl = build_decl (UNKNOWN_LOCATION, FUNCTION_DECL,
@@ -731,7 +731,7 @@ build_libfunc_function (const char *name)
   DECL_EXTERNAL (decl) = 1;
   TREE_PUBLIC (decl) = 1;
   DECL_ARTIFICIAL (decl) = 1;
-  DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
+  DECL_VISIBILITY (decl) = vis;
   DECL_VISIBILITY_SPECIFIED (decl) = 1;
   gcc_assert (DECL_ASSEMBLER_NAME (decl));
 
@@ -742,11 +742,19 @@ build_libfunc_function (const char *name)
   return decl;
 }
 
+/* Build a decl for a libfunc named NAME.  */
+
+tree
+build_libfunc_function (const char *name)
+{
+  return build_libfunc_function_visibility (name, VISIBILITY_DEFAULT);
+}
+
 /* Return a libfunc for NAME, creating one if we don't already have one.
-   The returned rtx is a SYMBOL_REF.  */
+   The decl is given visibility VIS.  The returned rtx is a SYMBOL_REF.  */
 
 rtx
-init_one_libfunc (const char *name)
+init_one_libfunc_visibility (const char *name, symbol_visibility vis)
 {
   tree id, decl;
   hashval_t hash;
@@ -763,12 +771,18 @@ init_one_libfunc (const char *name)
     {
       /* Create a new decl, so that it can be passed to
 	 targetm.encode_section_info.  */
-      decl = build_libfunc_function (name);
+      decl = build_libfunc_function_visibility (name, vis);
       *slot = decl;
     }
   return XEXP (DECL_RTL (decl), 0);
 }
 
+rtx
+init_one_libfunc (const char *name)
+{
+  return init_one_libfunc_visibility (name, VISIBILITY_DEFAULT);
+}
+
 /* Adjust the assembler name of libfunc NAME to ASMSPEC.  */
 
 rtx

gcc/optabs-libfuncs.h

@@ -63,7 +63,9 @@ void gen_satfract_conv_libfunc (convert_optab, const char *,
 void gen_satfractuns_conv_libfunc (convert_optab, const char *,
 				   machine_mode, machine_mode);
 
+tree build_libfunc_function_visibility (const char *, symbol_visibility);
 tree build_libfunc_function (const char *);
+rtx init_one_libfunc_visibility (const char *, symbol_visibility);
 rtx init_one_libfunc (const char *);
 rtx set_user_assembler_libfunc (const char *, const char *);