java-tree.h: Added init state enum.

	* java-tree.h: Added init state enum.
	* decl.c (emit_init_test_initialization): Initialize class
	initialization check variable by looking at class' state.

From-SVN: r34022

gcc/java/ChangeLog

 2000-05-19  Tom Tromey  <tromey@cygnus.com>
 
+	* java-tree.h: Added init state enum.
+	* decl.c (emit_init_test_initialization): Initialize class
+	initialization check variable by looking at class' state.
+
+2000-05-19  Tom Tromey  <tromey@cygnus.com>
+
 	* java-tree.h (build_instanceof): Declare.
 	(build_get_class): Declare.
 	* parse.y (patch_binop): Use build_instanceof.

gcc/java/decl.c

@@ -1681,17 +1681,29 @@ build_result_decl (fndecl)
 
 /* Called for every element in DECL_FUNCTION_INIT_TEST_TABLE in order
    to emit initialization code for each test flag.  */
-   
+
 static boolean
 emit_init_test_initialization (entry, key)
   struct hash_entry *entry;
   hash_table_key key ATTRIBUTE_UNUSED;
 {
   struct init_test_hash_entry *ite = (struct init_test_hash_entry *) entry;
+  tree klass = build_class_ref ((tree) entry->key);
   expand_decl (ite->init_test_decl);
 
-  expand_expr_stmt (build (MODIFY_EXPR, boolean_type_node, 
-			   ite->init_test_decl, boolean_false_node));
+  /* We initialize the class init check variable by looking at the
+     `state' field of the class to see if it is already initialized.
+     This makes things a bit faster if the class is already
+     initialized, which should be the common case.  */
+  expand_expr_stmt
+    (build (MODIFY_EXPR, boolean_type_node, 
+	    ite->init_test_decl,
+	    build (GE_EXPR, boolean_type_node,
+		   build (COMPONENT_REF, byte_type_node,
+			  build1 (INDIRECT_REF, class_type_node, klass),
+			  lookup_field (&class_type_node,
+					get_identifier ("state"))),
+		   build_int_2 (JV_STATE_DONE, 0))));
 
   return true;
 }

gcc/java/java-tree.h

@@ -1165,4 +1165,25 @@ extern int java_error_count;					\
        return;								\
    }
 
+/* These are the possible values for the `state' field of the class
+   structure.  This must be kept in sync with libgcj.  */
+enum
+{
+  JV_STATE_NOTHING = 0,		/* Set by compiler.  */
+
+  JV_STATE_PRELOADING = 1,	/* Can do _Jv_FindClass.  */
+  JV_STATE_LOADING = 3,		/* Has super installed.  */
+  JV_STATE_LOADED = 5,		/* Is complete.  */
+
+  JV_STATE_COMPILED = 6,	/* This was a compiled class.  */
+
+  JV_STATE_PREPARED = 7,	/* Layout & static init done.  */
+  JV_STATE_LINKED = 9,		/* Strings interned.  */
+
+  JV_STATE_IN_PROGRESS = 10,	/* <Clinit> running.  */
+  JV_STATE_DONE = 12,
+
+  JV_STATE_ERROR = 14		/* must be last.  */
+};
+
 #undef DEBUG_JAVA_BINDING_LEVELS

gcc/java/parse.y

@@ -12346,18 +12346,7 @@ patch_binop (node, wfl_op1, wfl_op2)
 	    }
 	  /* Otherwise we have to invoke instance of to figure it out */
 	  else
-	    {
-	      tree call =
-		build (CALL_EXPR, boolean_type_node,
-		       build_address_of (soft_instanceof_node),
-		       tree_cons 
-		       (NULL_TREE, op1,
-			build_tree_list (NULL_TREE,
-					 build_class_ref (op2_type))),
-		       NULL_TREE);
-	      TREE_SIDE_EFFECTS (call) = TREE_SIDE_EFFECTS (op1);
-	      return call;
-	    }
+	    return build_instanceof (op1, op2_type);
 	}
       /* There is no way the expression operand can be an instance of
 	 the type operand. This is a compile time error. */
@@ -14604,8 +14593,6 @@ fold_constant_for_init (node, context)
 
   if (code == INTEGER_CST || code == REAL_CST)
     return convert (TREE_TYPE (context), node);
-  if (TREE_TYPE (node) != NULL_TREE && code != VAR_DECL && code != FIELD_DECL)
-    return NULL_TREE;
 
   switch (code)
     {