c-lang.c (finish_file): Don't emit static inline functions if they weren't referenced.

* c-lang.c (finish_file): Don't emit static inline functions if
	they weren't referenced.

	* gcc.c-torture/execute/20011115-1.c: New test.

From-SVN: r47082

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2001-11-16  Jakub Jelinek  <jakub@redhat.com>
+
+	* c-lang.c (finish_file): Don't emit static inline functions if
+	they weren't referenced.
+
 2001-11-15  Stan Shebs  <shebs@apple.com>
 
 	* expr.c (expand_expr, case COMPONENT_REF): Fix variable ref.

gcc/c-lang.c

@@ -271,13 +271,38 @@ void
 finish_file ()
 {
   unsigned int i;
+  bool reconsider;
 
   for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
-    /* Don't output the same function twice.  We may run into such
-       situations when an extern inline function is later given a
-       non-extern-inline definition.  */
-    if (! TREE_ASM_WRITTEN (VARRAY_TREE (deferred_fns, i)))
-      c_expand_deferred_function (VARRAY_TREE (deferred_fns, i));
+    {
+      tree decl = VARRAY_TREE (deferred_fns, i);
+
+      if (! TREE_ASM_WRITTEN (decl) && TREE_PUBLIC (decl))
+	{
+	  c_expand_deferred_function (decl);
+	  VARRAY_TREE (deferred_fns, i) = NULL;
+	}
+    }
+
+  do
+    {
+      reconsider = false;
+      for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
+	{
+	  tree decl = VARRAY_TREE (deferred_fns, i);
+
+	  if (decl
+	      && ! TREE_ASM_WRITTEN (decl)
+	      && (flag_keep_inline_functions
+		  || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
+	    {
+	      c_expand_deferred_function (decl);
+	      VARRAY_TREE (deferred_fns, i) = NULL;
+	      reconsider = true;
+	    }
+	}
+    } while (reconsider);
+
   VARRAY_FREE (deferred_fns);
 
 #ifndef ASM_OUTPUT_CONSTRUCTOR

gcc/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2001-11-16  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.c-torture/execute/20011115-1.c: New test.
+
 2001-11-15  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.c-torture/compile/20011114-2.c: New test.

gcc/testsuite/gcc.c-torture/execute/20011115-1.c

@@ -0,0 +1,26 @@
+extern void exit (int);
+
+static inline int
+foo (void)
+{
+#ifdef __OPTIMIZE__
+  extern int undefined_reference;
+  return undefined_reference;
+#else
+  return 0;
+#endif
+}
+
+static inline int
+bar (void)
+{
+  if (foo == foo)
+    return 1;
+  else
+    return foo ();
+}
+
+int main (void)
+{
+  exit (0);
+}