--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/ci/ciConstant.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,112 @@
+/*
+ * Copyright 1999-2003 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// ciConstant
+//
+// This class represents a constant value.
+class ciConstant VALUE_OBJ_CLASS_SPEC {
+private:
+  friend class ciEnv;
+  friend class ciField;
+
+  BasicType _type;
+  union {
+    jint      _int;
+    jlong     _long;
+    jint      _long_half[2];
+    jfloat    _float;
+    jdouble   _double;
+    ciObject* _object;
+  } _value;
+
+  // Implementation of the print method.
+  void print_impl(outputStream* st);
+
+public:
+
+  ciConstant() {
+    _type = T_ILLEGAL; _value._long = -1;
+  }
+  ciConstant(BasicType type, jint value) {
+    assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT,
+           "using the wrong ciConstant constructor");
+    _type = type; _value._int = value;
+  }
+  ciConstant(jlong value) {
+    _type = T_LONG; _value._long = value;
+  }
+  ciConstant(jfloat value) {
+    _type = T_FLOAT; _value._float = value;
+  }
+  ciConstant(jdouble value) {
+    _type = T_DOUBLE; _value._double = value;
+  }
+  ciConstant(BasicType type, ciObject* p) {
+    _type = type; _value._object = p;
+  }
+
+  BasicType basic_type() const { return _type; }
+
+  jboolean  as_boolean() {
+    assert(basic_type() == T_BOOLEAN, "wrong type");
+    return (jboolean)_value._int;
+  }
+  jchar     as_char() {
+    assert(basic_type() == T_CHAR, "wrong type");
+    return (jchar)_value._int;
+  }
+  jbyte     as_byte() {
+    assert(basic_type() == T_BYTE, "wrong type");
+    return (jbyte)_value._int;
+  }
+  jshort    as_short() {
+    assert(basic_type() == T_SHORT, "wrong type");
+    return (jshort)_value._int;
+  }
+  jint      as_int() {
+    assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR  ||
+           basic_type() == T_BYTE    || basic_type() == T_SHORT ||
+           basic_type() == T_INT, "wrong type");
+    return _value._int;
+  }
+  jlong     as_long() {
+    assert(basic_type() == T_LONG, "wrong type");
+    return _value._long;
+  }
+  jfloat    as_float() {
+    assert(basic_type() == T_FLOAT, "wrong type");
+    return _value._float;
+  }
+  jdouble   as_double() {
+    assert(basic_type() == T_DOUBLE, "wrong type");
+    return _value._double;
+  }
+  ciObject* as_object() const {
+    assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type");
+    return _value._object;
+  }
+
+  // Debugging output
+  void print();
+};