Mercurial > hg > truffle
diff src/share/vm/c1/c1_ValueType.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/c1/c1_ValueType.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,421 @@ +/* + * Copyright 1999-2005 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. + * + */ + +// type hierarchy +class ValueType; +class VoidType; +class IntType; +class IntConstant; +class IntInterval; +class LongType; +class LongConstant; +class FloatType; +class FloatConstant; +class DoubleType; +class DoubleConstant; +class ObjectType; +class ObjectConstant; +class ArrayType; +class ArrayConstant; +class InstanceType; +class InstanceConstant; +class ClassType; +class ClassConstant; +class AddressType; +class AddressConstant; +class IllegalType; + + +// predefined types +extern VoidType* voidType; +extern IntType* intType; +extern LongType* longType; +extern FloatType* floatType; +extern DoubleType* doubleType; +extern ObjectType* objectType; +extern ArrayType* arrayType; +extern InstanceType* instanceType; +extern ClassType* classType; +extern AddressType* addressType; +extern IllegalType* illegalType; + + +// predefined constants +extern IntConstant* intZero; +extern IntConstant* intOne; +extern ObjectConstant* objectNull; + + +// tags +enum ValueTag { + // all legal tags must come first + intTag, + longTag, + floatTag, + doubleTag, + objectTag, + addressTag, + number_of_legal_tags, + // all other tags must follow afterwards + voidTag = number_of_legal_tags, + illegalTag, + number_of_tags +}; + + +class ValueType: public CompilationResourceObj { + private: + const int _size; + const ValueTag _tag; + ValueType(); + protected: + ValueType(ValueTag tag, int size): _tag(tag), _size(size) {} + + public: + // initialization + static void initialize(); + + // accessors + virtual ValueType* base() const = 0; // the 'canonical' type (e.g., intType for an IntConstant) + ValueTag tag() const { return _tag; } // the 'canonical' tag (useful for type matching) + int size() const { // the size of an object of the type in words + assert(_size > -1, "shouldn't be asking for size"); + return _size; + } + virtual const char tchar() const = 0; // the type 'character' for printing + virtual const char* name() const = 0; // the type name for printing + virtual bool is_constant() const { return false; } + + // testers + bool is_void() { return tag() == voidTag; } + bool is_int() { return tag() == intTag; } + bool is_long() { return tag() == longTag; } + bool is_float() { return tag() == floatTag; } + bool is_double() { return tag() == doubleTag; } + bool is_object() { return as_ObjectType() != NULL; } + bool is_array() { return as_ArrayType() != NULL; } + bool is_instance() { return as_InstanceType() != NULL; } + bool is_class() { return as_ClassType() != NULL; } + bool is_address() { return as_AddressType() != NULL; } + bool is_illegal() { return tag() == illegalTag; } + + bool is_int_kind() const { return tag() == intTag || tag() == longTag; } + bool is_float_kind() const { return tag() == floatTag || tag() == doubleTag; } + bool is_object_kind() const { return tag() == objectTag; } + + bool is_single_word() const { return _size == 1; } + bool is_double_word() const { return _size == 2; } + + // casting + virtual VoidType* as_VoidType() { return NULL; } + virtual IntType* as_IntType() { return NULL; } + virtual LongType* as_LongType() { return NULL; } + virtual FloatType* as_FloatType() { return NULL; } + virtual DoubleType* as_DoubleType() { return NULL; } + virtual ObjectType* as_ObjectType() { return NULL; } + virtual ArrayType* as_ArrayType() { return NULL; } + virtual InstanceType* as_InstanceType() { return NULL; } + virtual ClassType* as_ClassType() { return NULL; } + virtual AddressType* as_AddressType() { return NULL; } + virtual IllegalType* as_IllegalType() { return NULL; } + + virtual IntConstant* as_IntConstant() { return NULL; } + virtual LongConstant* as_LongConstant() { return NULL; } + virtual FloatConstant* as_FloatConstant() { return NULL; } + virtual DoubleConstant* as_DoubleConstant() { return NULL; } + virtual ObjectConstant* as_ObjectConstant() { return NULL; } + virtual InstanceConstant* as_InstanceConstant(){ return NULL; } + virtual ClassConstant* as_ClassConstant() { return NULL; } + virtual ArrayConstant* as_ArrayConstant() { return NULL; } + virtual AddressConstant* as_AddressConstant() { return NULL; } + + // type operations + ValueType* meet(ValueType* y) const; + ValueType* join(ValueType* y) const; + + // debugging + void print(outputStream* s = tty) { s->print(name()); } +}; + + +class VoidType: public ValueType { + public: + VoidType(): ValueType(voidTag, 0) {} + virtual ValueType* base() const { return voidType; } + virtual const char tchar() const { return 'v'; } + virtual const char* name() const { return "void"; } + virtual VoidType* as_VoidType() { return this; } +}; + + +class IntType: public ValueType { + public: + IntType(): ValueType(intTag, 1) {} + virtual ValueType* base() const { return intType; } + virtual const char tchar() const { return 'i'; } + virtual const char* name() const { return "int"; } + virtual IntType* as_IntType() { return this; } +}; + + +class IntConstant: public IntType { + private: + jint _value; + + public: + IntConstant(jint value) { _value = value; } + + jint value() const { return _value; } + + virtual bool is_constant() const { return true; } + virtual IntConstant* as_IntConstant() { return this; } +}; + + +class IntInterval: public IntType { + private: + jint _beg; + jint _end; + + public: + IntInterval(jint beg, jint end) { + assert(beg <= end, "illegal interval"); + _beg = beg; + _end = end; + } + + jint beg() const { return _beg; } + jint end() const { return _end; } + + virtual bool is_interval() const { return true; } +}; + + +class LongType: public ValueType { + public: + LongType(): ValueType(longTag, 2) {} + virtual ValueType* base() const { return longType; } + virtual const char tchar() const { return 'l'; } + virtual const char* name() const { return "long"; } + virtual LongType* as_LongType() { return this; } +}; + + +class LongConstant: public LongType { + private: + jlong _value; + + public: + LongConstant(jlong value) { _value = value; } + + jlong value() const { return _value; } + + virtual bool is_constant() const { return true; } + virtual LongConstant* as_LongConstant() { return this; } +}; + + +class FloatType: public ValueType { + public: + FloatType(): ValueType(floatTag, 1) {} + virtual ValueType* base() const { return floatType; } + virtual const char tchar() const { return 'f'; } + virtual const char* name() const { return "float"; } + virtual FloatType* as_FloatType() { return this; } +}; + + +class FloatConstant: public FloatType { + private: + jfloat _value; + + public: + FloatConstant(jfloat value) { _value = value; } + + jfloat value() const { return _value; } + + virtual bool is_constant() const { return true; } + virtual FloatConstant* as_FloatConstant() { return this; } +}; + + +class DoubleType: public ValueType { + public: + DoubleType(): ValueType(doubleTag, 2) {} + virtual ValueType* base() const { return doubleType; } + virtual const char tchar() const { return 'd'; } + virtual const char* name() const { return "double"; } + virtual DoubleType* as_DoubleType() { return this; } +}; + + +class DoubleConstant: public DoubleType { + private: + jdouble _value; + + public: + DoubleConstant(jdouble value) { _value = value; } + + jdouble value() const { return _value; } + + virtual bool is_constant() const { return true; } + virtual DoubleConstant* as_DoubleConstant() { return this; } +}; + + +class ObjectType: public ValueType { + public: + ObjectType(): ValueType(objectTag, 1) {} + virtual ValueType* base() const { return objectType; } + virtual const char tchar() const { return 'a'; } + virtual const char* name() const { return "object"; } + virtual ObjectType* as_ObjectType() { return this; } + virtual ciObject* constant_value() const { ShouldNotReachHere(); return NULL; } + bool is_loaded() const; + jobject encoding() const; +}; + + +class ObjectConstant: public ObjectType { + private: + ciObject* _value; + + public: + ObjectConstant(ciObject* value) { _value = value; } + + ciObject* value() const { return _value; } + + virtual bool is_constant() const { return true; } + virtual ObjectConstant* as_ObjectConstant() { return this; } + virtual ciObject* constant_value() const; +}; + + +class ArrayType: public ObjectType { + public: + virtual ArrayType* as_ArrayType() { return this; } +}; + + +class ArrayConstant: public ArrayType { + private: + ciArray* _value; + + public: + ArrayConstant(ciArray* value) { _value = value; } + + ciArray* value() const { return _value; } + + virtual bool is_constant() const { return true; } + + virtual ArrayConstant* as_ArrayConstant() { return this; } + virtual ciObject* constant_value() const; +}; + + +class InstanceType: public ObjectType { + public: + virtual InstanceType* as_InstanceType() { return this; } +}; + + +class InstanceConstant: public InstanceType { + private: + ciInstance* _value; + + public: + InstanceConstant(ciInstance* value) { _value = value; } + + ciInstance* value() const { return _value; } + + virtual bool is_constant() const { return true; } + + virtual InstanceConstant* as_InstanceConstant(){ return this; } + virtual ciObject* constant_value() const; +}; + + +class ClassType: public ObjectType { + public: + virtual ClassType* as_ClassType() { return this; } +}; + + +class ClassConstant: public ClassType { + private: + ciInstanceKlass* _value; + + public: + ClassConstant(ciInstanceKlass* value) { _value = value; } + + ciInstanceKlass* value() const { return _value; } + + virtual bool is_constant() const { return true; } + + virtual ClassConstant* as_ClassConstant() { return this; } + virtual ciObject* constant_value() const; +}; + + +class AddressType: public ValueType { + public: + AddressType(): ValueType(addressTag, 1) {} + virtual ValueType* base() const { return addressType; } + virtual const char tchar() const { return 'r'; } + virtual const char* name() const { return "address"; } + virtual AddressType* as_AddressType() { return this; } +}; + + +class AddressConstant: public AddressType { + private: + jint _value; + + public: + AddressConstant(jint value) { _value = value; } + + jint value() const { return _value; } + + virtual bool is_constant() const { return true; } + + virtual AddressConstant* as_AddressConstant() { return this; } +}; + + +class IllegalType: public ValueType { + public: + IllegalType(): ValueType(illegalTag, -1) {} + virtual ValueType* base() const { return illegalType; } + virtual const char tchar() const { return ' '; } + virtual const char* name() const { return "illegal"; } + virtual IllegalType* as_IllegalType() { return this; } +}; + + +// conversion between ValueTypes, BasicTypes, and ciConstants +ValueType* as_ValueType(BasicType type); +ValueType* as_ValueType(ciConstant value); +BasicType as_BasicType(ValueType* type); + +inline ValueType* as_ValueType(ciType* type) { return as_ValueType(type->basic_type()); }