JDK14/Java14源码在线阅读
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#ifndef SHARE_OPTO_TYPE_HPP
#define SHARE_OPTO_TYPE_HPP
#include "opto/adlcVMDeps.hpp"
#include "runtime/handles.hpp"
// Portions of code courtesy of Clifford Click
// Optimization - Graph Style
// This class defines a Type lattice. The lattice is used in the constant
// propagation algorithms, and for some type-checking of the iloc code.
// Basic types include RSD's (lower bound, upper bound, stride for integers),
// float & double precision constants, sets of data-labels and code-labels.
// The complete lattice is described below. Subtypes have no relationship to
// up or down in the lattice; that is entirely determined by the behavior of
// the MEET/JOIN functions.
class Dict;
class Type;
class TypeD;
class TypeF;
class TypeInt;
class TypeLong;
class TypeNarrowPtr;
class TypeNarrowOop;
class TypeNarrowKlass;
class TypeAry;
class TypeTuple;
class TypeVect;
class TypeVectS;
class TypeVectD;
class TypeVectX;
class TypeVectY;
class TypeVectZ;
class TypePtr;
class TypeRawPtr;
class TypeOopPtr;
class TypeInstPtr;
class TypeAryPtr;
class TypeKlassPtr;
class TypeMetadataPtr;
//------------------------------Type-------------------------------------------
// Basic Type object, represents a set of primitive Values.
// Types are hash-cons'd into a private class dictionary, so only one of each
// different kind of Type exists. Types are never modified after creation, so
// all their interesting fields are constant.
class Type {
friend class VMStructs;
public:
enum TYPES {
Bad=0, // Type check
Control, // Control of code (not in lattice)
Top, // Top of the lattice
Int, // Integer range (lo-hi)
Long, // Long integer range (lo-hi)
Half, // Placeholder half of doubleword
NarrowOop, // Compressed oop pointer
NarrowKlass, // Compressed klass pointer
Tuple, // Method signature or object layout
Array, // Array types
VectorS, // 32bit Vector types
VectorD, // 64bit Vector types
VectorX, // 128bit Vector types
VectorY, // 256bit Vector types
VectorZ, // 512bit Vector types
AnyPtr, // Any old raw, klass, inst, or array pointer
RawPtr, // Raw (non-oop) pointers
OopPtr, // Any and all Java heap entities
InstPtr, // Instance pointers (non-array objects)
AryPtr, // Array pointers
// (Ptr order matters: See is_ptr, isa_ptr, is_oopptr, isa_oopptr.)
MetadataPtr, // Generic metadata
KlassPtr, // Klass pointers
Function, // Function signature
Abio, // Abstract I/O
Return_Address, // Subroutine return address
Memory, // Abstract store
FloatTop, // No float value
FloatCon, // Floating point constant
FloatBot, // Any float value
DoubleTop, // No double value
DoubleCon, // Double precision constant
DoubleBot, // Any double value
Bottom, // Bottom of lattice
lastype // Bogus ending type (not in lattice)
};
// Signal values for offsets from a base pointer
enum OFFSET_SIGNALS {
OffsetTop = -2000000000, // undefined offset
OffsetBot = -2000000001 // any possible offset
};
// Min and max WIDEN values.
enum WIDEN {
WidenMin = 0,
WidenMax = 3
};
private:
typedef struct {
TYPES dual_type;
BasicType basic_type;
const char* msg;
bool isa_oop;
uint ideal_reg;
relocInfo::relocType reloc;
} TypeInfo;
// Dictionary of types shared among compilations.
static Dict* _shared_type_dict;
static const TypeInfo _type_info[];
static int uhash( const Type *const t );
// Structural equality check. Assumes that cmp() has already compared
// the _base types and thus knows it can cast 't' appropriately.
virtual bool eq( const Type *t ) const;
// Top-level hash-table of types
static Dict *type_dict() {
return Compile::current()->type_dict();
}
// DUAL operation: reflect around lattice centerline. Used instead of
// join to ensure my lattice is symmetric up and down. Dual is computed
// lazily, on demand, and cached in _dual.
const Type *_dual; // Cached dual value
// Table for efficient dualing of base types
static const TYPES dual_type[lastype];
#ifdef ASSERT
// One type is interface, the other is oop
virtual bool interface_vs_oop_helper(const Type *t) const;
#endif
const Type *meet_helper(const Type *t, bool include_speculative) const;
protected:
// Each class of type is also identified by its base.
const TYPES _base; // Enum of Types type
Type( TYPES t ) : _dual(NULL), _base(t) {} // Simple types
// ~Type(); // Use fast deallocation
const Type *hashcons(); // Hash-cons the type
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
const Type *join_helper(const Type *t, bool include_speculative) const {
return dual()->meet_helper(t->dual(), include_speculative)->dual();
}
public:
inline void* operator new( size_t x ) throw() {
Compile* compile = Compile::current();
compile->set_type_last_size(x);
return compile->type_arena()->Amalloc_D(x);
}
inline void operator delete( void* ptr ) {
Compile* compile = Compile::current();
compile->type_arena()->Afree(ptr,compile->type_last_size());
}
// Initialize the type system for a particular compilation.
static void Initialize(Compile* compile);
// Initialize the types shared by all compilations.
static void Initialize_shared(Compile* compile);
TYPES base() const {
assert(_base > Bad && _base < lastype, "sanity");
return _base;
}
// Create a new hash-consd type
static const Type *make(enum TYPES);
// Test for equivalence of types
static int cmp( const Type *const t1, const Type *const t2 );
// Test for higher or equal in lattice
// Variant that drops the speculative part of the types
bool higher_equal(const Type *t) const {
return !cmp(meet(t),t->remove_speculative());
}
// Variant that keeps the speculative part of the types
bool higher_equal_speculative(const Type *t) const {
return !cmp(meet_speculative(t),t);
}
// MEET operation; lower in lattice.
// Variant that drops the speculative part of the types
const Type *meet(const Type *t) const {
return meet_helper(t, false);
}
// Variant that keeps the speculative part of the types
const Type *meet_speculative(const Type *t) const {
return meet_helper(t, true)->cleanup_speculative();
}
// WIDEN: 'widens' for Ints and other range types
virtual const Type *widen( const Type *old, const Type* limit ) const { return this; }
// NARROW: complement for widen, used by pessimistic phases
virtual const Type *narrow( const Type *old ) const { return this; }
// DUAL operation: reflect around lattice centerline. Used instead of
// join to ensure my lattice is symmetric up and down.
const Type *dual() const { return _dual; }
// Compute meet dependent on base type
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// JOIN operation; higher in lattice. Done by finding the dual of the
// meet of the dual of the 2 inputs.
// Variant that drops the speculative part of the types
const Type *join(const Type *t) const {
return join_helper(t, false);
}
// Variant that keeps the speculative part of the types
const Type *join_speculative(const Type *t) const {
return join_helper(t, true)->cleanup_speculative();
}
// Modified version of JOIN adapted to the needs Node::Value.
// Normalizes all empty values to TOP. Does not kill _widen bits.
// Currently, it also works around limitations involving interface types.
// Variant that drops the speculative part of the types
const Type *filter(const Type *kills) const {
return filter_helper(kills, false);
}
// Variant that keeps the speculative part of the types
const Type *filter_speculative(const Type *kills) const {
return filter_helper(kills, true)->cleanup_speculative();
}
#ifdef ASSERT
// One type is interface, the other is oop
virtual bool interface_vs_oop(const Type *t) const;
#endif
// Returns true if this pointer points at memory which contains a
// compressed oop references.
bool is_ptr_to_narrowoop() const;
bool is_ptr_to_narrowklass() const;
bool is_ptr_to_boxing_obj() const;
// Convenience access
float getf() const;
double getd() const;
const TypeInt *is_int() const;
const TypeInt *isa_int() const; // Returns NULL if not an Int
const TypeLong *is_long() const;
const TypeLong *isa_long() const; // Returns NULL if not a Long
const TypeD *isa_double() const; // Returns NULL if not a Double{Top,Con,Bot}
const TypeD *is_double_constant() const; // Asserts it is a DoubleCon
const TypeD *isa_double_constant() const; // Returns NULL if not a DoubleCon
const TypeF *isa_float() const; // Returns NULL if not a Float{Top,Con,Bot}
const TypeF *is_float_constant() const; // Asserts it is a FloatCon
const TypeF *isa_float_constant() const; // Returns NULL if not a FloatCon
const TypeTuple *is_tuple() const; // Collection of fields, NOT a pointer
const TypeAry *is_ary() const; // Array, NOT array pointer
const TypeAry *isa_ary() const; // Returns NULL of not ary
const TypeVect *is_vect() const; // Vector
const TypeVect *isa_vect() const; // Returns NULL if not a Vector
const TypePtr *is_ptr() const; // Asserts it is a ptr type
const TypePtr *isa_ptr() const; // Returns NULL if not ptr type
const TypeRawPtr *isa_rawptr() const; // NOT Java oop
const TypeRawPtr *is_rawptr() const; // Asserts is rawptr
const TypeNarrowOop *is_narrowoop() const; // Java-style GC'd pointer
const TypeNarrowOop *isa_narrowoop() const; // Returns NULL if not oop ptr type
const TypeNarrowKlass *is_narrowklass() const; // compressed klass pointer
const TypeNarrowKlass *isa_narrowklass() const;// Returns NULL if not oop ptr type
const TypeOopPtr *isa_oopptr() const; // Returns NULL if not oop ptr type
const TypeOopPtr *is_oopptr() const; // Java-style GC'd pointer
const TypeInstPtr *isa_instptr() const; // Returns NULL if not InstPtr
const TypeInstPtr *is_instptr() const; // Instance
const TypeAryPtr *isa_aryptr() const; // Returns NULL if not AryPtr
const TypeAryPtr *is_aryptr() const; // Array oop
const TypeMetadataPtr *isa_metadataptr() const; // Returns NULL if not oop ptr type
const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
const TypeKlassPtr *isa_klassptr() const; // Returns NULL if not KlassPtr
const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
virtual bool is_finite() const; // Has a finite value
virtual bool is_nan() const; // Is not a number (NaN)
// Returns this ptr type or the equivalent ptr type for this compressed pointer.
const TypePtr* make_ptr() const;
// Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
// Asserts if the underlying type is not an oopptr or narrowoop.
const TypeOopPtr* make_oopptr() const;
// Returns this compressed pointer or the equivalent compressed version
// of this pointer type.
const TypeNarrowOop* make_narrowoop() const;
// Returns this compressed klass pointer or the equivalent
// compressed version of this pointer type.
const TypeNarrowKlass* make_narrowklass() const;
// Special test for register pressure heuristic
bool is_floatingpoint() const; // True if Float or Double base type
// Do you have memory, directly or through a tuple?
bool has_memory( ) const;
// TRUE if type is a singleton
virtual bool singleton(void) const;
// TRUE if type is above the lattice centerline, and is therefore vacuous
virtual bool empty(void) const;
// Return a hash for this type. The hash function is public so ConNode
// (constants) can hash on their constant, which is represented by a Type.
virtual int hash() const;
// Map ideal registers (machine types) to ideal types
static const Type *mreg2type[];
// Printing, statistics
#ifndef PRODUCT
void dump_on(outputStream *st) const;
void dump() const {
dump_on(tty);
}
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
static void dump_stats();
static const char* str(const Type* t);
#endif
void typerr(const Type *t) const; // Mixing types error
// Create basic type
static const Type* get_const_basic_type(BasicType type) {
assert((uint)type <= T_CONFLICT && _const_basic_type[type] != NULL, "bad type");
return _const_basic_type[type];
}
// For two instance arrays of same dimension, return the base element types.
// Otherwise or if the arrays have different dimensions, return NULL.
static void get_arrays_base_elements(const Type *a1, const Type *a2,
const TypeInstPtr **e1, const TypeInstPtr **e2);
// Mapping to the array element's basic type.
BasicType array_element_basic_type() const;
// Create standard type for a ciType:
static const Type* get_const_type(ciType* type);
// Create standard zero value:
static const Type* get_zero_type(BasicType type) {
assert((uint)type <= T_CONFLICT && _zero_type[type] != NULL, "bad type");
return _zero_type[type];
}
// Report if this is a zero value (not top).
bool is_zero_type() const {
BasicType type = basic_type();
if (type == T_VOID || type >= T_CONFLICT)
return false;
else
return (this == _zero_type[type]);
}
// Convenience common pre-built types.
static const Type *ABIO;
static const Type *BOTTOM;
static const Type *CONTROL;
static const Type *DOUBLE;
static const Type *FLOAT;
static const Type *HALF;
static const Type *MEMORY;
static const Type *MULTI;
static const Type *RETURN_ADDRESS;
static const Type *TOP;
// Mapping from compiler type to VM BasicType
BasicType basic_type() const { return _type_info[_base].basic_type; }
uint ideal_reg() const { return _type_info[_base].ideal_reg; }
const char* msg() const { return _type_info[_base].msg; }
bool isa_oop_ptr() const { return _type_info[_base].isa_oop; }
relocInfo::relocType reloc() const { return _type_info[_base].reloc; }
// Mapping from CI type system to compiler type:
static const Type* get_typeflow_type(ciType* type);
static const Type* make_from_constant(ciConstant constant,
bool require_constant = false,
int stable_dimension = 0,
bool is_narrow = false,
bool is_autobox_cache = false);
static const Type* make_constant_from_field(ciInstance* holder,
int off,
bool is_unsigned_load,
BasicType loadbt);
static const Type* make_constant_from_field(ciField* field,
ciInstance* holder,
BasicType loadbt,
bool is_unsigned_load);
static const Type* make_constant_from_array_element(ciArray* array,
int off,
int stable_dimension,
BasicType loadbt,
bool is_unsigned_load);
// Speculative type helper methods. See TypePtr.
virtual const TypePtr* speculative() const { return NULL; }
virtual ciKlass* speculative_type() const { return NULL; }
virtual ciKlass* speculative_type_not_null() const { return NULL; }
virtual bool speculative_maybe_null() const { return true; }
virtual bool speculative_always_null() const { return true; }
virtual const Type* remove_speculative() const { return this; }
virtual const Type* cleanup_speculative() const { return this; }
virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const { return exact_kls != NULL; }
virtual bool would_improve_ptr(ProfilePtrKind ptr_kind) const { return ptr_kind == ProfileAlwaysNull || ptr_kind == ProfileNeverNull; }
const Type* maybe_remove_speculative(bool include_speculative) const;
virtual bool maybe_null() const { return true; }
private:
// support arrays
static const Type* _zero_type[T_CONFLICT+1];
static const Type* _const_basic_type[T_CONFLICT+1];
};
//------------------------------TypeF------------------------------------------
// Class of Float-Constant Types.
class TypeF : public Type {
TypeF( float f ) : Type(FloatCon), _f(f) {};
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
public:
const float _f; // Float constant
static const TypeF *make(float f);
virtual bool is_finite() const; // Has a finite value
virtual bool is_nan() const; // Is not a number (NaN)
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// Convenience common pre-built types.
static const TypeF *ZERO; // positive zero only
static const TypeF *ONE;
static const TypeF *POS_INF;
static const TypeF *NEG_INF;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeD------------------------------------------
// Class of Double-Constant Types.
class TypeD : public Type {
TypeD( double d ) : Type(DoubleCon), _d(d) {};
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
public:
const double _d; // Double constant
static const TypeD *make(double d);
virtual bool is_finite() const; // Has a finite value
virtual bool is_nan() const; // Is not a number (NaN)
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// Convenience common pre-built types.
static const TypeD *ZERO; // positive zero only
static const TypeD *ONE;
static const TypeD *POS_INF;
static const TypeD *NEG_INF;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeInt----------------------------------------
// Class of integer ranges, the set of integers between a lower bound and an
// upper bound, inclusive.
class TypeInt : public Type {
TypeInt( jint lo, jint hi, int w );
protected:
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
typedef jint NativeType;
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
const jint _lo, _hi; // Lower bound, upper bound
const short _widen; // Limit on times we widen this sucker
static const TypeInt *make(jint lo);
// must always specify w
static const TypeInt *make(jint lo, jint hi, int w);
// Check for single integer
int is_con() const { return _lo==_hi; }
bool is_con(int i) const { return is_con() && _lo == i; }
jint get_con() const { assert( is_con(), "" ); return _lo; }
virtual bool is_finite() const; // Has a finite value
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
virtual const Type *widen( const Type *t, const Type* limit_type ) const;
virtual const Type *narrow( const Type *t ) const;
// Do not kill _widen bits.
// Convenience common pre-built types.
static const TypeInt *MINUS_1;
static const TypeInt *ZERO;
static const TypeInt *ONE;
static const TypeInt *BOOL;
static const TypeInt *CC;
static const TypeInt *CC_LT; // [-1] == MINUS_1
static const TypeInt *CC_GT; // [1] == ONE
static const TypeInt *CC_EQ; // [0] == ZERO
static const TypeInt *CC_LE; // [-1,0]
static const TypeInt *CC_GE; // [0,1] == BOOL (!)
static const TypeInt *BYTE;
static const TypeInt *UBYTE;
static const TypeInt *CHAR;
static const TypeInt *SHORT;
static const TypeInt *POS;
static const TypeInt *POS1;
static const TypeInt *INT;
static const TypeInt *SYMINT; // symmetric range [-max_jint..max_jint]
static const TypeInt *TYPE_DOMAIN; // alias for TypeInt::INT
static const TypeInt *as_self(const Type *t) { return t->is_int(); }
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeLong---------------------------------------
// Class of long integer ranges, the set of integers between a lower bound and
// an upper bound, inclusive.
class TypeLong : public Type {
TypeLong( jlong lo, jlong hi, int w );
protected:
// Do not kill _widen bits.
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
typedef jlong NativeType;
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
public:
const jlong _lo, _hi; // Lower bound, upper bound
const short _widen; // Limit on times we widen this sucker
static const TypeLong *make(jlong lo);
// must always specify w
static const TypeLong *make(jlong lo, jlong hi, int w);
// Check for single integer
int is_con() const { return _lo==_hi; }
bool is_con(int i) const { return is_con() && _lo == i; }
jlong get_con() const { assert( is_con(), "" ); return _lo; }
// Check for positive 32-bit value.
int is_positive_int() const { return _lo >= 0 && _hi <= (jlong)max_jint; }
virtual bool is_finite() const; // Has a finite value
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
virtual const Type *widen( const Type *t, const Type* limit_type ) const;
virtual const Type *narrow( const Type *t ) const;
// Convenience common pre-built types.
static const TypeLong *MINUS_1;
static const TypeLong *ZERO;
static const TypeLong *ONE;
static const TypeLong *POS;
static const TypeLong *LONG;
static const TypeLong *INT; // 32-bit subrange [min_jint..max_jint]
static const TypeLong *UINT; // 32-bit unsigned [0..max_juint]
static const TypeLong *TYPE_DOMAIN; // alias for TypeLong::LONG
// static convenience methods.
static const TypeLong *as_self(const Type *t) { return t->is_long(); }
#ifndef PRODUCT
virtual void dump2( Dict &d, uint, outputStream *st ) const;// Specialized per-Type dumping
#endif
};
//------------------------------TypeTuple--------------------------------------
// Class of Tuple Types, essentially type collections for function signatures
// and class layouts. It happens to also be a fast cache for the HotSpot
// signature types.
class TypeTuple : public Type {
TypeTuple( uint cnt, const Type **fields ) : Type(Tuple), _cnt(cnt), _fields(fields) { }
const uint _cnt; // Count of fields
const Type ** const _fields; // Array of field types
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
// Accessors:
uint cnt() const { return _cnt; }
const Type* field_at(uint i) const {
assert(i < _cnt, "oob");
return _fields[i];
}
void set_field_at(uint i, const Type* t) {
assert(i < _cnt, "oob");
_fields[i] = t;
}
static const TypeTuple *make( uint cnt, const Type **fields );
static const TypeTuple *make_range(ciSignature *sig);
static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig);
// Subroutine call type with space allocated for argument types
// Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
static const Type **fields( uint arg_cnt );
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// Convenience common pre-built types.
static const TypeTuple *IFBOTH;
static const TypeTuple *IFFALSE;
static const TypeTuple *IFTRUE;
static const TypeTuple *IFNEITHER;
static const TypeTuple *LOOPBODY;
static const TypeTuple *MEMBAR;
static const TypeTuple *STORECONDITIONAL;
static const TypeTuple *START_I2C;
static const TypeTuple *INT_PAIR;
static const TypeTuple *LONG_PAIR;
static const TypeTuple *INT_CC_PAIR;
static const TypeTuple *LONG_CC_PAIR;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
#endif
};
//------------------------------TypeAry----------------------------------------
// Class of Array Types
class TypeAry : public Type {
TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
_elem(elem), _size(size), _stable(stable) {}
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
private:
const Type *_elem; // Element type of array
const TypeInt *_size; // Elements in array
const bool _stable; // Are elements @Stable?
friend class TypeAryPtr;
public:
static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
bool ary_must_be_exact() const; // true if arrays of such are never generic
virtual const Type* remove_speculative() const;
virtual const Type* cleanup_speculative() const;
#ifdef ASSERT
// One type is interface, the other is oop
virtual bool interface_vs_oop(const Type *t) const;
#endif
#ifndef PRODUCT
virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
#endif
};
//------------------------------TypeVect---------------------------------------
// Class of Vector Types
class TypeVect : public Type {
const Type* _elem; // Vector's element type
const uint _length; // Elements in vector (power of 2)
protected:
TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
_elem(elem), _length(length) {}
public:
const Type* element_type() const { return _elem; }
BasicType element_basic_type() const { return _elem->array_element_basic_type(); }
uint length() const { return _length; }
uint length_in_bytes() const {
return _length * type2aelembytes(element_basic_type());
}
virtual bool eq(const Type *t) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
static const TypeVect *make(const BasicType elem_bt, uint length) {
// Use bottom primitive type.
return make(get_const_basic_type(elem_bt), length);
}
// Used directly by Replicate nodes to construct singleton vector.
static const TypeVect *make(const Type* elem, uint length);
virtual const Type *xmeet( const Type *t) const;
virtual const Type *xdual() const; // Compute dual right now.
static const TypeVect *VECTS;
static const TypeVect *VECTD;
static const TypeVect *VECTX;
static const TypeVect *VECTY;
static const TypeVect *VECTZ;
#ifndef PRODUCT
virtual void dump2(Dict &d, uint, outputStream *st) const; // Specialized per-Type dumping
#endif
};
class TypeVectS : public TypeVect {
friend class TypeVect;
TypeVectS(const Type* elem, uint length) : TypeVect(VectorS, elem, length) {}
};
class TypeVectD : public TypeVect {
friend class TypeVect;
TypeVectD(const Type* elem, uint length) : TypeVect(VectorD, elem, length) {}
};
class TypeVectX : public TypeVect {
friend class TypeVect;
TypeVectX(const Type* elem, uint length) : TypeVect(VectorX, elem, length) {}
};
class TypeVectY : public TypeVect {
friend class TypeVect;
TypeVectY(const Type* elem, uint length) : TypeVect(VectorY, elem, length) {}
};
class TypeVectZ : public TypeVect {
friend class TypeVect;
TypeVectZ(const Type* elem, uint length) : TypeVect(VectorZ, elem, length) {}
};
//------------------------------TypePtr----------------------------------------
// Class of machine Pointer Types: raw data, instances or arrays.
// If the _base enum is AnyPtr, then this refers to all of the above.
// Otherwise the _base will indicate which subset of pointers is affected,
// and the class will be inherited from.
class TypePtr : public Type {
friend class TypeNarrowPtr;
public:
enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
protected:
TypePtr(TYPES t, PTR ptr, int offset,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom) :
Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
_ptr(ptr) {}
static const PTR ptr_meet[lastPTR][lastPTR];
static const PTR ptr_dual[lastPTR];
static const char * const ptr_msg[lastPTR];
enum {
InlineDepthBottom = INT_MAX,
InlineDepthTop = -InlineDepthBottom
};
// Extra type information profiling gave us. We propagate it the
// same way the rest of the type info is propagated. If we want to
// use it, then we have to emit a guard: this part of the type is
// not something we know but something we speculate about the type.
const TypePtr* _speculative;
// For speculative types, we record at what inlining depth the
// profiling point that provided the data is. We want to favor
// profile data coming from outer scopes which are likely better for
// the current compilation.
int _inline_depth;
// utility methods to work on the speculative part of the type
const TypePtr* dual_speculative() const;
const TypePtr* xmeet_speculative(const TypePtr* other) const;
bool eq_speculative(const TypePtr* other) const;
int hash_speculative() const;
const TypePtr* add_offset_speculative(intptr_t offset) const;
#ifndef PRODUCT
void dump_speculative(outputStream *st) const;
#endif
// utility methods to work on the inline depth of the type
int dual_inline_depth() const;
int meet_inline_depth(int depth) const;
#ifndef PRODUCT
void dump_inline_depth(outputStream *st) const;
#endif
public:
const int _offset; // Offset into oop, with TOP & BOT
const PTR _ptr; // Pointer equivalence class
const int offset() const { return _offset; }
const PTR ptr() const { return _ptr; }
static const TypePtr *make(TYPES t, PTR ptr, int offset,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom);
// Return a 'ptr' version of this type
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual intptr_t get_con() const;
int xadd_offset( intptr_t offset ) const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
virtual bool eq(const Type *t) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xmeet_helper( const Type *t ) const;
int meet_offset( int offset ) const;
int dual_offset( ) const;
virtual const Type *xdual() const; // Compute dual right now.
// meet, dual and join over pointer equivalence sets
PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
PTR dual_ptr() const { return ptr_dual[ptr()]; }
// This is textually confusing unless one recalls that
// join(t) == dual()->meet(t->dual())->dual().
PTR join_ptr( const PTR in_ptr ) const {
return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
}
// Speculative type helper methods.
virtual const TypePtr* speculative() const { return _speculative; }
int inline_depth() const { return _inline_depth; }
virtual ciKlass* speculative_type() const;
virtual ciKlass* speculative_type_not_null() const;
virtual bool speculative_maybe_null() const;
virtual bool speculative_always_null() const;
virtual const Type* remove_speculative() const;
virtual const Type* cleanup_speculative() const;
virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
virtual const TypePtr* with_inline_depth(int depth) const;
virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
// Tests for relation to centerline of type lattice:
static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
// Convenience common pre-built types.
static const TypePtr *NULL_PTR;
static const TypePtr *NOTNULL;
static const TypePtr *BOTTOM;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeRawPtr-------------------------------------
// Class of raw pointers, pointers to things other than Oops. Examples
// include the stack pointer, top of heap, card-marking area, handles, etc.
class TypeRawPtr : public TypePtr {
protected:
TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){}
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
const address _bits; // Constant value, if applicable
static const TypeRawPtr *make( PTR ptr );
static const TypeRawPtr *make( address bits );
// Return a 'ptr' version of this type
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual intptr_t get_con() const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// Convenience common pre-built types.
static const TypeRawPtr *BOTTOM;
static const TypeRawPtr *NOTNULL;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeOopPtr-------------------------------------
// Some kind of oop (Java pointer), either instance or array.
class TypeOopPtr : public TypePtr {
protected:
TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id,
const TypePtr* speculative, int inline_depth);
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
enum {
InstanceTop = -1, // undefined instance
InstanceBot = 0 // any possible instance
};
protected:
// Oop is NULL, unless this is a constant oop.
ciObject* _const_oop; // Constant oop
// If _klass is NULL, then so is _sig. This is an unloaded klass.
ciKlass* _klass; // Klass object
// Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
bool _klass_is_exact;
bool _is_ptr_to_narrowoop;
bool _is_ptr_to_narrowklass;
bool _is_ptr_to_boxed_value;
// If not InstanceTop or InstanceBot, indicates that this is
// a particular instance of this type which is distinct.
// This is the node index of the allocation node creating this instance.
int _instance_id;
static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact);
int dual_instance_id() const;
int meet_instance_id(int uid) const;
// Do not allow interface-vs.-noninterface joins to collapse to top.
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
// Creates a type given a klass. Correctly handles multi-dimensional arrays
// Respects UseUniqueSubclasses.
// If the klass is final, the resulting type will be exact.
static const TypeOopPtr* make_from_klass(ciKlass* klass) {
return make_from_klass_common(klass, true, false);
}
// Same as before, but will produce an exact type, even if
// the klass is not final, as long as it has exactly one implementation.
static const TypeOopPtr* make_from_klass_unique(ciKlass* klass) {
return make_from_klass_common(klass, true, true);
}
// Same as before, but does not respects UseUniqueSubclasses.
// Use this only for creating array element types.
static const TypeOopPtr* make_from_klass_raw(ciKlass* klass) {
return make_from_klass_common(klass, false, false);
}
// Creates a singleton type given an object.
// If the object cannot be rendered as a constant,
// may return a non-singleton type.
// If require_constant, produce a NULL if a singleton is not possible.
static const TypeOopPtr* make_from_constant(ciObject* o,
bool require_constant = false);
// Make a generic (unclassed) pointer to an oop.
static const TypeOopPtr* make(PTR ptr, int offset, int instance_id,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom);
ciObject* const_oop() const { return _const_oop; }
virtual ciKlass* klass() const { return _klass; }
bool klass_is_exact() const { return _klass_is_exact; }
// Returns true if this pointer points at memory which contains a
// compressed oop references.
bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
bool is_ptr_to_boxed_value() const { return _is_ptr_to_boxed_value; }
bool is_known_instance() const { return _instance_id > 0; }
int instance_id() const { return _instance_id; }
bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }
virtual intptr_t get_con() const;
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual const Type *cast_to_exactness(bool klass_is_exact) const;
virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
// corresponding pointer to klass, for a given instance
const TypeKlassPtr* as_klass_type() const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
// Speculative type helper methods.
virtual const Type* remove_speculative() const;
virtual const Type* cleanup_speculative() const;
virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
virtual const TypePtr* with_inline_depth(int depth) const;
virtual const TypePtr* with_instance_id(int instance_id) const;
virtual const Type *xdual() const; // Compute dual right now.
// the core of the computation of the meet for TypeOopPtr and for its subclasses
virtual const Type *xmeet_helper(const Type *t) const;
// Convenience common pre-built type.
static const TypeOopPtr *BOTTOM;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeInstPtr------------------------------------
// Class of Java object pointers, pointing either to non-array Java instances
// or to a Klass* (including array klasses).
class TypeInstPtr : public TypeOopPtr {
TypeInstPtr(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id,
const TypePtr* speculative, int inline_depth);
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
ciSymbol* _name; // class name
public:
ciSymbol* name() const { return _name; }
bool is_loaded() const { return _klass->is_loaded(); }
// Make a pointer to a constant oop.
static const TypeInstPtr *make(ciObject* o) {
return make(TypePtr::Constant, o->klass(), true, o, 0, InstanceBot);
}
// Make a pointer to a constant oop with offset.
static const TypeInstPtr *make(ciObject* o, int offset) {
return make(TypePtr::Constant, o->klass(), true, o, offset, InstanceBot);
}
// Make a pointer to some value of type klass.
static const TypeInstPtr *make(PTR ptr, ciKlass* klass) {
return make(ptr, klass, false, NULL, 0, InstanceBot);
}
// Make a pointer to some non-polymorphic value of exactly type klass.
static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
return make(ptr, klass, true, NULL, 0, InstanceBot);
}
// Make a pointer to some value of type klass with offset.
static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
return make(ptr, klass, false, NULL, offset, InstanceBot);
}
// Make a pointer to an oop.
static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset,
int instance_id = InstanceBot,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom);
/** Create constant type for a constant boxed value */
const Type* get_const_boxed_value() const;
// If this is a java.lang.Class constant, return the type for it or NULL.
// Pass to Type::get_const_type to turn it to a type, which will usually
// be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
ciType* java_mirror_type() const;
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual const Type *cast_to_exactness(bool klass_is_exact) const;
virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
// Speculative type helper methods.
virtual const Type* remove_speculative() const;
virtual const TypePtr* with_inline_depth(int depth) const;
virtual const TypePtr* with_instance_id(int instance_id) const;
// the core of the computation of the meet of 2 types
virtual const Type *xmeet_helper(const Type *t) const;
virtual const TypeInstPtr *xmeet_unloaded( const TypeInstPtr *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
// Convenience common pre-built types.
static const TypeInstPtr *NOTNULL;
static const TypeInstPtr *BOTTOM;
static const TypeInstPtr *MIRROR;
static const TypeInstPtr *MARK;
static const TypeInstPtr *KLASS;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
#endif
};
//------------------------------TypeAryPtr-------------------------------------
// Class of Java array pointers
class TypeAryPtr : public TypeOopPtr {
TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
int offset, int instance_id, bool is_autobox_cache,
const TypePtr* speculative, int inline_depth)
: TypeOopPtr(AryPtr,ptr,k,xk,o,offset, instance_id, speculative, inline_depth),
_ary(ary),
_is_autobox_cache(is_autobox_cache)
{
#ifdef ASSERT
if (k != NULL) {
// Verify that specified klass and TypeAryPtr::klass() follow the same rules.
ciKlass* ck = compute_klass(true);
if (k != ck) {
this->dump(); tty->cr();
tty->print(" k: ");
k->print(); tty->cr();
tty->print("ck: ");
if (ck != NULL) ck->print();
else tty->print("<NULL>");
tty->cr();
assert(false, "unexpected TypeAryPtr::_klass");
}
}
#endif
}
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
const TypeAry *_ary; // Array we point into
const bool _is_autobox_cache;
ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
public:
// Accessors
ciKlass* klass() const;
const TypeAry* ary() const { return _ary; }
const Type* elem() const { return _ary->_elem; }
const TypeInt* size() const { return _ary->_size; }
bool is_stable() const { return _ary->_stable; }
bool is_autobox_cache() const { return _is_autobox_cache; }
static const TypeAryPtr *make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,
int instance_id = InstanceBot,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom);
// Constant pointer to array
static const TypeAryPtr *make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,
int instance_id = InstanceBot,
const TypePtr* speculative = NULL,
int inline_depth = InlineDepthBottom, bool is_autobox_cache = false);
// Return a 'ptr' version of this type
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual const Type *cast_to_exactness(bool klass_is_exact) const;
virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
virtual bool empty(void) const; // TRUE if type is vacuous
virtual const TypePtr *add_offset( intptr_t offset ) const;
// Speculative type helper methods.
virtual const Type* remove_speculative() const;
virtual const TypePtr* with_inline_depth(int depth) const;
virtual const TypePtr* with_instance_id(int instance_id) const;
// the core of the computation of the meet of 2 types
virtual const Type *xmeet_helper(const Type *t) const;
virtual const Type *xdual() const; // Compute dual right now.
const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
int stable_dimension() const;
const TypeAryPtr* cast_to_autobox_cache(bool cache) const;
static jint max_array_length(BasicType etype) ;
// Convenience common pre-built types.
static const TypeAryPtr *RANGE;
static const TypeAryPtr *OOPS;
static const TypeAryPtr *NARROWOOPS;
static const TypeAryPtr *BYTES;
static const TypeAryPtr *SHORTS;
static const TypeAryPtr *CHARS;
static const TypeAryPtr *INTS;
static const TypeAryPtr *LONGS;
static const TypeAryPtr *FLOATS;
static const TypeAryPtr *DOUBLES;
// selects one of the above:
static const TypeAryPtr *get_array_body_type(BasicType elem) {
assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type");
return _array_body_type[elem];
}
static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
// sharpen the type of an int which is used as an array size
#ifdef ASSERT
// One type is interface, the other is oop
virtual bool interface_vs_oop(const Type *t) const;
#endif
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
#endif
};
//------------------------------TypeMetadataPtr-------------------------------------
// Some kind of metadata, either Method*, MethodData* or CPCacheOop
class TypeMetadataPtr : public TypePtr {
protected:
TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
// Do not allow interface-vs.-noninterface joins to collapse to top.
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
private:
ciMetadata* _metadata;
public:
static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
static const TypeMetadataPtr* make(ciMethod* m);
static const TypeMetadataPtr* make(ciMethodData* m);
ciMetadata* metadata() const { return _metadata; }
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
virtual intptr_t get_con() const;
// Convenience common pre-built types.
static const TypeMetadataPtr *BOTTOM;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeKlassPtr-----------------------------------
// Class of Java Klass pointers
class TypeKlassPtr : public TypePtr {
TypeKlassPtr( PTR ptr, ciKlass* klass, int offset );
protected:
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
private:
static const TypeKlassPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact);
ciKlass* _klass;
// Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
bool _klass_is_exact;
public:
ciSymbol* name() const { return klass()->name(); }
ciKlass* klass() const { return _klass; }
bool klass_is_exact() const { return _klass_is_exact; }
bool is_loaded() const { return klass()->is_loaded(); }
// Creates a type given a klass. Correctly handles multi-dimensional arrays
// Respects UseUniqueSubclasses.
// If the klass is final, the resulting type will be exact.
static const TypeKlassPtr* make_from_klass(ciKlass* klass) {
return make_from_klass_common(klass, true, false);
}
// Same as before, but will produce an exact type, even if
// the klass is not final, as long as it has exactly one implementation.
static const TypeKlassPtr* make_from_klass_unique(ciKlass* klass) {
return make_from_klass_common(klass, true, true);
}
// Same as before, but does not respects UseUniqueSubclasses.
// Use this only for creating array element types.
static const TypeKlassPtr* make_from_klass_raw(ciKlass* klass) {
return make_from_klass_common(klass, false, false);
}
// Make a generic (unclassed) pointer to metadata.
static const TypeKlassPtr* make(PTR ptr, int offset);
// ptr to klass 'k'
static const TypeKlassPtr *make( ciKlass* k ) { return make( TypePtr::Constant, k, 0); }
// ptr to klass 'k' with offset
static const TypeKlassPtr *make( ciKlass* k, int offset ) { return make( TypePtr::Constant, k, offset); }
// ptr to klass 'k' or sub-klass
static const TypeKlassPtr *make( PTR ptr, ciKlass* k, int offset);
virtual const Type *cast_to_ptr_type(PTR ptr) const;
virtual const Type *cast_to_exactness(bool klass_is_exact) const;
// corresponding pointer to instance, for a given class
const TypeOopPtr* as_instance_type() const;
virtual const TypePtr *add_offset( intptr_t offset ) const;
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
virtual intptr_t get_con() const;
// Convenience common pre-built types.
static const TypeKlassPtr* OBJECT; // Not-null object klass or below
static const TypeKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
#endif
};
class TypeNarrowPtr : public Type {
protected:
const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
_ptrtype(ptrtype) {
assert(ptrtype->offset() == 0 ||
ptrtype->offset() == OffsetBot ||
ptrtype->offset() == OffsetTop, "no real offsets");
}
virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const = 0;
virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const = 0;
// Do not allow interface-vs.-noninterface joins to collapse to top.
virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
public:
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
virtual intptr_t get_con() const;
virtual bool empty(void) const; // TRUE if type is vacuous
// returns the equivalent ptr type for this compressed pointer
const TypePtr *get_ptrtype() const {
return _ptrtype;
}
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeNarrowOop----------------------------------
// A compressed reference to some kind of Oop. This type wraps around
// a preexisting TypeOopPtr and forwards most of it's operations to
// the underlying type. It's only real purpose is to track the
// oopness of the compressed oop value when we expose the conversion
// between the normal and the compressed form.
class TypeNarrowOop : public TypeNarrowPtr {
protected:
TypeNarrowOop( const TypePtr* ptrtype): TypeNarrowPtr(NarrowOop, ptrtype) {
}
virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
return t->isa_narrowoop();
}
virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
return t->is_narrowoop();
}
virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
return new TypeNarrowOop(t);
}
virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
return (const TypeNarrowPtr*)((new TypeNarrowOop(t))->hashcons());
}
public:
static const TypeNarrowOop *make( const TypePtr* type);
static const TypeNarrowOop* make_from_constant(ciObject* con, bool require_constant = false) {
return make(TypeOopPtr::make_from_constant(con, require_constant));
}
static const TypeNarrowOop *BOTTOM;
static const TypeNarrowOop *NULL_PTR;
virtual const Type* remove_speculative() const;
virtual const Type* cleanup_speculative() const;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeNarrowKlass----------------------------------
// A compressed reference to klass pointer. This type wraps around a
// preexisting TypeKlassPtr and forwards most of it's operations to
// the underlying type.
class TypeNarrowKlass : public TypeNarrowPtr {
protected:
TypeNarrowKlass( const TypePtr* ptrtype): TypeNarrowPtr(NarrowKlass, ptrtype) {
}
virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
return t->isa_narrowklass();
}
virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
return t->is_narrowklass();
}
virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
return new TypeNarrowKlass(t);
}
virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
}
public:
static const TypeNarrowKlass *make( const TypePtr* type);
// static const TypeNarrowKlass *BOTTOM;
static const TypeNarrowKlass *NULL_PTR;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
#endif
};
//------------------------------TypeFunc---------------------------------------
// Class of Array Types
class TypeFunc : public Type {
TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function), _domain(domain), _range(range) {}
virtual bool eq( const Type *t ) const;
virtual int hash() const; // Type specific hashing
virtual bool singleton(void) const; // TRUE if type is a singleton
virtual bool empty(void) const; // TRUE if type is vacuous
const TypeTuple* const _domain; // Domain of inputs
const TypeTuple* const _range; // Range of results
public:
// Constants are shared among ADLC and VM
enum { Control = AdlcVMDeps::Control,
I_O = AdlcVMDeps::I_O,
Memory = AdlcVMDeps::Memory,
FramePtr = AdlcVMDeps::FramePtr,
ReturnAdr = AdlcVMDeps::ReturnAdr,
Parms = AdlcVMDeps::Parms
};
// Accessors:
const TypeTuple* domain() const { return _domain; }
const TypeTuple* range() const { return _range; }
static const TypeFunc *make(ciMethod* method);
static const TypeFunc *make(ciSignature signature, const Type* extra);
static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
virtual const Type *xmeet( const Type *t ) const;
virtual const Type *xdual() const; // Compute dual right now.
BasicType return_type() const;
#ifndef PRODUCT
virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
#endif
// Convenience common pre-built types.
};
//------------------------------accessors--------------------------------------
inline bool Type::is_ptr_to_narrowoop() const {
#ifdef _LP64
return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv());
#else
return false;
#endif
}
inline bool Type::is_ptr_to_narrowklass() const {
#ifdef _LP64
return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowklass_nv());
#else
return false;
#endif
}
inline float Type::getf() const {
assert( _base == FloatCon, "Not a FloatCon" );
return ((TypeF*)this)->_f;
}
inline double Type::getd() const {
assert( _base == DoubleCon, "Not a DoubleCon" );
return ((TypeD*)this)->_d;
}
inline const TypeInt *Type::is_int() const {
assert( _base == Int, "Not an Int" );
return (TypeInt*)this;
}
inline const TypeInt *Type::isa_int() const {
return ( _base == Int ? (TypeInt*)this : NULL);
}
inline const TypeLong *Type::is_long() const {
assert( _base == Long, "Not a Long" );
return (TypeLong*)this;
}
inline const TypeLong *Type::isa_long() const {
return ( _base == Long ? (TypeLong*)this : NULL);
}
inline const TypeF *Type::isa_float() const {
return ((_base == FloatTop ||
_base == FloatCon ||
_base == FloatBot) ? (TypeF*)this : NULL);
}
inline const TypeF *Type::is_float_constant() const {
assert( _base == FloatCon, "Not a Float" );
return (TypeF*)this;
}
inline const TypeF *Type::isa_float_constant() const {
return ( _base == FloatCon ? (TypeF*)this : NULL);
}
inline const TypeD *Type::isa_double() const {
return ((_base == DoubleTop ||
_base == DoubleCon ||
_base == DoubleBot) ? (TypeD*)this : NULL);
}
inline const TypeD *Type::is_double_constant() const {
assert( _base == DoubleCon, "Not a Double" );
return (TypeD*)this;
}
inline const TypeD *Type::isa_double_constant() const {
return ( _base == DoubleCon ? (TypeD*)this : NULL);
}
inline const TypeTuple *Type::is_tuple() const {
assert( _base == Tuple, "Not a Tuple" );
return (TypeTuple*)this;
}
inline const TypeAry *Type::is_ary() const {
assert( _base == Array , "Not an Array" );
return (TypeAry*)this;
}
inline const TypeAry *Type::isa_ary() const {
return ((_base == Array) ? (TypeAry*)this : NULL);
}
inline const TypeVect *Type::is_vect() const {
assert( _base >= VectorS && _base <= VectorZ, "Not a Vector" );
return (TypeVect*)this;
}
inline const TypeVect *Type::isa_vect() const {
return (_base >= VectorS && _base <= VectorZ) ? (TypeVect*)this : NULL;
}
inline const TypePtr *Type::is_ptr() const {
// AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
assert(_base >= AnyPtr && _base <= KlassPtr, "Not a pointer");
return (TypePtr*)this;
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