duke@435: /*
stefank@2314:  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_C1_C1_VALUETYPE_HPP
stefank@2314: #define SHARE_VM_C1_C1_VALUETYPE_HPP
stefank@2314: 
stefank@2314: #include "c1/c1_Compilation.hpp"
stefank@2314: #include "ci/ciConstant.hpp"
stefank@2314: 
duke@435: // type hierarchy
duke@435: class ValueType;
duke@435: class   VoidType;
duke@435: class   IntType;
duke@435: class     IntConstant;
duke@435: class     IntInterval;
duke@435: class   LongType;
duke@435: class     LongConstant;
duke@435: class   FloatType;
duke@435: class     FloatConstant;
duke@435: class   DoubleType;
duke@435: class     DoubleConstant;
duke@435: class   ObjectType;
duke@435: class     ObjectConstant;
duke@435: class     ArrayType;
duke@435: class       ArrayConstant;
duke@435: class     InstanceType;
duke@435: class       InstanceConstant;
duke@435: class     ClassType;
duke@435: class       ClassConstant;
duke@435: class   AddressType;
duke@435: class     AddressConstant;
duke@435: class   IllegalType;
duke@435: 
duke@435: 
duke@435: // predefined types
duke@435: extern VoidType*       voidType;
duke@435: extern IntType*        intType;
duke@435: extern LongType*       longType;
duke@435: extern FloatType*      floatType;
duke@435: extern DoubleType*     doubleType;
duke@435: extern ObjectType*     objectType;
duke@435: extern ArrayType*      arrayType;
duke@435: extern InstanceType*   instanceType;
duke@435: extern ClassType*      classType;
duke@435: extern AddressType*    addressType;
duke@435: extern IllegalType*    illegalType;
duke@435: 
duke@435: 
duke@435: // predefined constants
duke@435: extern IntConstant*    intZero;
duke@435: extern IntConstant*    intOne;
duke@435: extern ObjectConstant* objectNull;
duke@435: 
duke@435: 
duke@435: // tags
duke@435: enum ValueTag {
duke@435:   // all legal tags must come first
duke@435:   intTag,
duke@435:   longTag,
duke@435:   floatTag,
duke@435:   doubleTag,
duke@435:   objectTag,
duke@435:   addressTag,
duke@435:   number_of_legal_tags,
duke@435:   // all other tags must follow afterwards
duke@435:   voidTag = number_of_legal_tags,
duke@435:   illegalTag,
duke@435:   number_of_tags
duke@435: };
duke@435: 
duke@435: 
duke@435: class ValueType: public CompilationResourceObj {
duke@435:  private:
duke@435:   const int _size;
duke@435:   const ValueTag _tag;
duke@435:   ValueType();
duke@435:  protected:
duke@435:   ValueType(ValueTag tag, int size): _tag(tag), _size(size) {}
duke@435: 
duke@435:  public:
duke@435:   // initialization
iveresov@1939:   static void initialize(Arena* arena);
duke@435: 
duke@435:   // accessors
duke@435:   virtual ValueType* base() const                = 0; // the 'canonical' type (e.g., intType for an IntConstant)
duke@435:   ValueTag tag() const { return _tag; }          // the 'canonical' tag  (useful for type matching)
duke@435:   int size() const {                             // the size of an object of the type in words
duke@435:     assert(_size > -1, "shouldn't be asking for size");
duke@435:     return _size;
duke@435:   }
duke@435:   virtual const char tchar() const               = 0; // the type 'character' for printing
duke@435:   virtual const char* name() const               = 0; // the type name for printing
duke@435:   virtual bool is_constant() const               { return false; }
duke@435: 
duke@435:   // testers
duke@435:   bool is_void()                                 { return tag() == voidTag;   }
duke@435:   bool is_int()                                  { return tag() == intTag;    }
duke@435:   bool is_long()                                 { return tag() == longTag;   }
duke@435:   bool is_float()                                { return tag() == floatTag;  }
duke@435:   bool is_double()                               { return tag() == doubleTag; }
duke@435:   bool is_object()                               { return as_ObjectType()   != NULL; }
duke@435:   bool is_array()                                { return as_ArrayType()    != NULL; }
duke@435:   bool is_instance()                             { return as_InstanceType() != NULL; }
duke@435:   bool is_class()                                { return as_ClassType()    != NULL; }
duke@435:   bool is_address()                              { return as_AddressType()  != NULL; }
duke@435:   bool is_illegal()                              { return tag() == illegalTag; }
duke@435: 
duke@435:   bool is_int_kind() const                       { return tag() == intTag || tag() == longTag; }
duke@435:   bool is_float_kind() const                     { return tag() == floatTag || tag() == doubleTag; }
duke@435:   bool is_object_kind() const                    { return tag() == objectTag; }
duke@435: 
duke@435:   bool is_single_word() const                    { return _size == 1; }
duke@435:   bool is_double_word() const                    { return _size == 2; }
duke@435: 
duke@435:   // casting
duke@435:   virtual VoidType*         as_VoidType()        { return NULL; }
duke@435:   virtual IntType*          as_IntType()         { return NULL; }
duke@435:   virtual LongType*         as_LongType()        { return NULL; }
duke@435:   virtual FloatType*        as_FloatType()       { return NULL; }
duke@435:   virtual DoubleType*       as_DoubleType()      { return NULL; }
duke@435:   virtual ObjectType*       as_ObjectType()      { return NULL; }
duke@435:   virtual ArrayType*        as_ArrayType()       { return NULL; }
duke@435:   virtual InstanceType*     as_InstanceType()    { return NULL; }
duke@435:   virtual ClassType*        as_ClassType()       { return NULL; }
duke@435:   virtual AddressType*      as_AddressType()     { return NULL; }
duke@435:   virtual IllegalType*      as_IllegalType()     { return NULL; }
duke@435: 
duke@435:   virtual IntConstant*      as_IntConstant()     { return NULL; }
duke@435:   virtual LongConstant*     as_LongConstant()    { return NULL; }
duke@435:   virtual FloatConstant*    as_FloatConstant()   { return NULL; }
duke@435:   virtual DoubleConstant*   as_DoubleConstant()  { return NULL; }
duke@435:   virtual ObjectConstant*   as_ObjectConstant()  { return NULL; }
duke@435:   virtual InstanceConstant* as_InstanceConstant(){ return NULL; }
duke@435:   virtual ClassConstant*    as_ClassConstant()   { return NULL; }
duke@435:   virtual ArrayConstant*    as_ArrayConstant()   { return NULL; }
duke@435:   virtual AddressConstant*  as_AddressConstant() { return NULL; }
duke@435: 
duke@435:   // type operations
duke@435:   ValueType* meet(ValueType* y) const;
duke@435:   ValueType* join(ValueType* y) const;
duke@435: 
duke@435:   // debugging
duke@435:   void print(outputStream* s = tty)              { s->print(name()); }
duke@435: };
duke@435: 
duke@435: 
duke@435: class VoidType: public ValueType {
duke@435:  public:
duke@435:   VoidType(): ValueType(voidTag, 0) {}
duke@435:   virtual ValueType* base() const                { return voidType; }
duke@435:   virtual const char tchar() const               { return 'v'; }
duke@435:   virtual const char* name() const               { return "void"; }
duke@435:   virtual VoidType* as_VoidType()                { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class IntType: public ValueType {
duke@435:  public:
duke@435:   IntType(): ValueType(intTag, 1) {}
duke@435:   virtual ValueType* base() const                { return intType; }
duke@435:   virtual const char tchar() const               { return 'i'; }
duke@435:   virtual const char* name() const               { return "int"; }
duke@435:   virtual IntType* as_IntType()                  { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class IntConstant: public IntType {
duke@435:  private:
duke@435:   jint _value;
duke@435: 
duke@435:  public:
duke@435:   IntConstant(jint value)                        { _value = value; }
duke@435: 
duke@435:   jint value() const                             { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435:   virtual IntConstant* as_IntConstant()          { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class IntInterval: public IntType {
duke@435:  private:
duke@435:   jint _beg;
duke@435:   jint _end;
duke@435: 
duke@435:  public:
duke@435:   IntInterval(jint beg, jint end) {
duke@435:     assert(beg <= end, "illegal interval");
duke@435:     _beg = beg;
duke@435:     _end = end;
duke@435:   }
duke@435: 
duke@435:   jint beg() const                               { return _beg; }
duke@435:   jint end() const                               { return _end; }
duke@435: 
duke@435:   virtual bool is_interval() const               { return true; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class LongType: public ValueType {
duke@435:  public:
duke@435:   LongType(): ValueType(longTag, 2) {}
duke@435:   virtual ValueType* base() const                { return longType; }
duke@435:   virtual const char tchar() const               { return 'l'; }
duke@435:   virtual const char* name() const               { return "long"; }
duke@435:   virtual LongType* as_LongType()                { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class LongConstant: public LongType {
duke@435:  private:
duke@435:   jlong _value;
duke@435: 
duke@435:  public:
duke@435:   LongConstant(jlong value)                      { _value = value; }
duke@435: 
duke@435:   jlong value() const                            { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435:   virtual LongConstant* as_LongConstant()        { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class FloatType: public ValueType {
duke@435:  public:
duke@435:   FloatType(): ValueType(floatTag, 1) {}
duke@435:   virtual ValueType* base() const                { return floatType; }
duke@435:   virtual const char tchar() const               { return 'f'; }
duke@435:   virtual const char* name() const               { return "float"; }
duke@435:   virtual FloatType* as_FloatType()              { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class FloatConstant: public FloatType {
duke@435:  private:
duke@435:   jfloat _value;
duke@435: 
duke@435:  public:
duke@435:   FloatConstant(jfloat value)                    { _value = value; }
duke@435: 
duke@435:   jfloat value() const                           { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435:   virtual FloatConstant* as_FloatConstant()      { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class DoubleType: public ValueType {
duke@435:  public:
duke@435:   DoubleType(): ValueType(doubleTag, 2) {}
duke@435:   virtual ValueType* base() const                { return doubleType; }
duke@435:   virtual const char tchar() const               { return 'd'; }
duke@435:   virtual const char* name() const               { return "double"; }
duke@435:   virtual DoubleType* as_DoubleType()            { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class DoubleConstant: public DoubleType {
duke@435:  private:
duke@435:   jdouble _value;
duke@435: 
duke@435:  public:
duke@435:   DoubleConstant(jdouble value)                  { _value = value; }
duke@435: 
duke@435:   jdouble value() const                          { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435:   virtual DoubleConstant* as_DoubleConstant()    { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class ObjectType: public ValueType {
duke@435:  public:
duke@435:   ObjectType(): ValueType(objectTag, 1) {}
duke@435:   virtual ValueType* base() const                { return objectType; }
duke@435:   virtual const char tchar() const               { return 'a'; }
duke@435:   virtual const char* name() const               { return "object"; }
duke@435:   virtual ObjectType* as_ObjectType()            { return this; }
duke@435:   virtual ciObject* constant_value() const       { ShouldNotReachHere(); return NULL;  }
duke@435:   bool is_loaded() const;
duke@435:   jobject encoding() const;
duke@435: };
duke@435: 
duke@435: 
duke@435: class ObjectConstant: public ObjectType {
duke@435:  private:
duke@435:   ciObject* _value;
duke@435: 
duke@435:  public:
duke@435:   ObjectConstant(ciObject* value)                { _value = value; }
duke@435: 
duke@435:   ciObject* value() const                        { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435:   virtual ObjectConstant* as_ObjectConstant()    { return this; }
duke@435:   virtual ciObject* constant_value() const;
duke@435: };
duke@435: 
duke@435: 
duke@435: class ArrayType: public ObjectType {
duke@435:  public:
duke@435:   virtual ArrayType* as_ArrayType()              { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class ArrayConstant: public ArrayType {
duke@435:  private:
duke@435:   ciArray* _value;
duke@435: 
duke@435:  public:
duke@435:   ArrayConstant(ciArray* value)                  { _value = value; }
duke@435: 
duke@435:   ciArray* value() const                         { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435: 
duke@435:   virtual ArrayConstant* as_ArrayConstant()      { return this; }
duke@435:   virtual ciObject* constant_value() const;
duke@435: };
duke@435: 
duke@435: 
duke@435: class InstanceType: public ObjectType {
duke@435:  public:
duke@435:   virtual InstanceType* as_InstanceType()        { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class InstanceConstant: public InstanceType {
duke@435:  private:
duke@435:   ciInstance* _value;
duke@435: 
duke@435:  public:
duke@435:   InstanceConstant(ciInstance* value)            { _value = value; }
duke@435: 
duke@435:   ciInstance* value() const                      { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435: 
duke@435:   virtual InstanceConstant* as_InstanceConstant(){ return this; }
duke@435:   virtual ciObject* constant_value() const;
duke@435: };
duke@435: 
duke@435: 
duke@435: class ClassType: public ObjectType {
duke@435:  public:
duke@435:   virtual ClassType* as_ClassType()              { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class ClassConstant: public ClassType {
duke@435:  private:
duke@435:   ciInstanceKlass* _value;
duke@435: 
duke@435:  public:
duke@435:   ClassConstant(ciInstanceKlass* value)          { _value = value; }
duke@435: 
duke@435:   ciInstanceKlass* value() const                 { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435: 
duke@435:   virtual ClassConstant* as_ClassConstant()      { return this; }
duke@435:   virtual ciObject* constant_value() const;
duke@435: };
duke@435: 
duke@435: 
duke@435: class AddressType: public ValueType {
duke@435:  public:
duke@435:   AddressType(): ValueType(addressTag, 1) {}
duke@435:   virtual ValueType* base() const                { return addressType; }
duke@435:   virtual const char tchar() const               { return 'r'; }
duke@435:   virtual const char* name() const               { return "address"; }
duke@435:   virtual AddressType* as_AddressType()          { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class AddressConstant: public AddressType {
duke@435:  private:
duke@435:   jint _value;
duke@435: 
duke@435:  public:
duke@435:   AddressConstant(jint value)                    { _value = value; }
duke@435: 
duke@435:   jint value() const                             { return _value; }
duke@435: 
duke@435:   virtual bool is_constant() const               { return true; }
duke@435: 
duke@435:   virtual AddressConstant* as_AddressConstant()  { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: class IllegalType: public ValueType {
duke@435:  public:
duke@435:   IllegalType(): ValueType(illegalTag, -1) {}
duke@435:   virtual ValueType* base() const                { return illegalType; }
duke@435:   virtual const char tchar() const               { return ' '; }
duke@435:   virtual const char* name() const               { return "illegal"; }
duke@435:   virtual IllegalType* as_IllegalType()          { return this; }
duke@435: };
duke@435: 
duke@435: 
duke@435: // conversion between ValueTypes, BasicTypes, and ciConstants
duke@435: ValueType* as_ValueType(BasicType type);
duke@435: ValueType* as_ValueType(ciConstant value);
duke@435: BasicType  as_BasicType(ValueType* type);
duke@435: 
duke@435: inline ValueType* as_ValueType(ciType* type) { return as_ValueType(type->basic_type()); }
stefank@2314: 
stefank@2314: #endif // SHARE_VM_C1_C1_VALUETYPE_HPP