jdk8-mips64-public/hotspot: src/share/vm/adlc/forms.hpp@246d977b51f2 (annotated)

src/share/vm/adlc/forms.hpp@246d977b51f2 (annotated)

src/share/vm/adlc/forms.hpp

Mon, 25 Jun 2012 21:33:35 -0400

author: coleenp
date: Mon, 25 Jun 2012 21:33:35 -0400
changeset 3875: 246d977b51f2
parent 2314: f95d63e2154a
child 3882: 8c92982cbbc4
permissions: -rw-r--r--

7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table
Summary: Cannot delete _buckets and HashtableEntries in shared space (CDS)
Reviewed-by: acorn, kvn, dlong, dcubed, kamg

 /*
  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_ADLC_FORMS_HPP
 #define SHARE_VM_ADLC_FORMS_HPP
 // FORMS.HPP - ADL Parser Generic and Utility Forms Classes
 #define TRUE 1
 #define FALSE 0
 // DEFINITIONS OF LEGAL ATTRIBUTE TYPES
 #define INS_ATTR 0
 #define OP_ATTR  1
 // DEFINITIONS OF LEGAL CONSTRAINT TYPES
 // Class List
 class Form;
 class InstructForm;
 class MachNodeForm;
 class OperandForm;
 class OpClassForm;
 class AttributeForm;
 class RegisterForm;
 class PipelineForm;
 class SourceForm;
 class EncodeForm;
 class Component;
 class Constraint;
 class Predicate;
 class MatchRule;
 class Attribute;
 class Effect;
 class ExpandRule;
 class RewriteRule;
 class ConstructRule;
 class FormatRule;
 class Peephole;
 class EncClass;
 class Interface;
 class RegInterface;
 class ConstInterface;
 class MemInterface;
 class CondInterface;
 class Opcode;
 class InsEncode;
 class RegDef;
 class RegClass;
 class AllocClass;
 class ResourceForm;
 class PipeClassForm;
 class PeepMatch;
 class PeepConstraint;
 class PeepReplace;
 class MatchList;
 class ArchDesc;
 //------------------------------FormDict---------------------------------------
 // Dictionary containing Forms, and objects derived from forms
 class FormDict {
 private:
   Dict         _form;              // map names, char*, to their Form* or NULL
   // Disable public use of constructor, copy-ctor, operator =, operator ==
   FormDict( );
   FormDict &operator =( const FormDict & );
   // == compares two dictionaries; they must have the same keys (their keys
   // must match using CmpKey) and they must have the same values (pointer
   // comparison).  If so 1 is returned, if not 0 is returned.
   bool operator ==(const FormDict &d) const; // Compare dictionaries for equal
 public:
   // cmp is a key comparision routine.  hash is a routine to hash a key.
   // FormDict( CmpKey cmp, Hash hash );
   FormDict( CmpKey cmp, Hash hash, Arena *arena );
   FormDict( const FormDict & fd );    // Deep-copy guts
   ~FormDict();
   // Return # of key-value pairs in dict
   int Size(void) const;
   // Insert inserts the given key-value pair into the dictionary.  The prior
   // value of the key is returned; NULL if the key was not previously defined.
   const Form  *Insert(const char *name, Form *form); // A new key-value
   // Find finds the value of a given key; or NULL if not found.
   // The dictionary is NOT changed.
   const Form  *operator [](const char *name) const;  // Do a lookup
   void dump();
 };
 // ***** Master Class for ADL Parser Forms *****
 //------------------------------Form-------------------------------------------
 class Form {
 public:
   static Arena  *arena;            // arena used by forms
 private:
   static Arena  *generate_arena(); // allocate arena used by forms
 protected:
   int   _ftype;                    // Indicator for derived class type
 public:
   // Public Data
   Form *_next;                     // Next pointer for form lists
   int   _linenum;                  // Line number for debugging
   // Dynamic type check for common forms.
   virtual OpClassForm   *is_opclass()     const;
   virtual OperandForm   *is_operand()     const;
   virtual InstructForm  *is_instruction() const;
   virtual MachNodeForm  *is_machnode()    const;
   virtual AttributeForm *is_attribute()   const;
   virtual Effect        *is_effect()      const;
   virtual ResourceForm  *is_resource()    const;
   virtual PipeClassForm *is_pipeclass()   const;
   // Check if this form is an operand usable for cisc-spilling
   virtual bool           is_cisc_reg(FormDict &globals) const { return false; }
   virtual bool           is_cisc_mem(FormDict &globals) const { return false; }
   // Public Methods
   Form(int formType=0, int line=0)
     : _next(NULL), _linenum(line), _ftype(formType) { };
   ~Form() {};
   virtual bool ideal_only() const {
     assert(0,"Check of ideal status on non-instruction/operand form.\n");
     return FALSE;
   }
   // Check constraints after parsing
   virtual bool verify()    { return true; }
   virtual void dump()      { output(stderr); }    // Debug printer
   // Write info to output files
   virtual void output(FILE *fp)    { fprintf(fp,"Form Output"); }
 public:
   // ADLC types, match the last character on ideal operands and instructions
   enum DataType {
     none        =  0,  // Not a simple type
     idealI      =  1,  // Integer type
     idealP      =  2,  // Pointer types, oop(s)
     idealL      =  3,  // Long    type
     idealF      =  4,  // Float   type
     idealD      =  5,  // Double  type
     idealB      =  6,  // Byte    type
     idealC      =  7,  // Char    type
     idealS      =  8,  // String  type
     idealN      =  9   // Narrow oop types
   };
   // Convert ideal name to a DataType, return DataType::none if not a 'ConX'
   Form::DataType  ideal_to_const_type(const char *ideal_type_name) const;
   // Convert ideal name to a DataType, return DataType::none if not a 'sRegX
   Form::DataType  ideal_to_sReg_type(const char *name) const;
   // Convert ideal name to a DataType, return DataType::none if not a 'RegX
   Form::DataType  ideal_to_Reg_type(const char *name) const;
   // Convert ideal name to a DataType, return DataType::none if not a 'LoadX
   Form::DataType is_load_from_memory(const char *opType) const;
   // Convert ideal name to a DataType, return DataType::none if not a 'StoreX
   Form::DataType is_store_to_memory(const char *opType)  const;
   // ADLC call types, matched with ideal world
   enum CallType {
     invalid_type  =  0,  // invalid call type
     JAVA_STATIC   =  1,  // monomorphic entry
     JAVA_DYNAMIC  =  2,  // possibly megamorphic, inline cache call
     JAVA_COMPILED =  3,  // callee will be compiled java
     JAVA_INTERP   =  4,  // callee will be executed by interpreter
     JAVA_NATIVE   =  5,  // native entrypoint
     JAVA_RUNTIME  =  6,  // runtime entrypoint
     JAVA_LEAF     =  7   // calling leaf
   };
   // Interface types for operands and operand classes
   enum InterfaceType {
     no_interface          =  0,  // unknown or inconsistent interface type
     constant_interface    =  1,  // interface to constants
     register_interface    =  2,  // interface to registers
     memory_interface      =  3,  // interface to memory
     conditional_interface =  4   // interface for condition codes
   };
   virtual Form::InterfaceType interface_type(FormDict &globals) const;
   enum CiscSpillInfo {
     Not_cisc_spillable   =  AdlcVMDeps::Not_cisc_spillable,
     Maybe_cisc_spillable =   0,
     Is_cisc_spillable    =   1
     // ...
   };
   // LEGAL FORM TYPES
   enum {
     INS,
     OPER,
     OPCLASS,
     SRC,
     ADEF,
     REG,
     PIPE,
     CNST,
     PRED,
     ATTR,
     MAT,
     ENC,
     FOR,
     EXP,
     REW,
     EFF,
     RDEF,
     RCL,
     ACL,
     RES,
     PCL,
     PDEF,
     REGL,
     RESL,
     STAL,
     COMP,
     PEEP,
     RESO
   };
 };
 //------------------------------FormList---------------------------------------
 class FormList {
 private:
   Form *_root;
   Form *_tail;
   Form *_cur;
   int   _justReset;                // Set immediately after reset
   Form *_cur2;                     // Nested iterator
   int   _justReset2;
 public:
   void addForm(Form * entry) {
     if (_tail==NULL) { _root = _tail = _cur = entry;}
     else { _tail->_next = entry; _tail = entry;}
   };
   Form * current() { return _cur; };
   Form * iter()    { if (_justReset) _justReset = 0;
                      else if (_cur)  _cur = _cur->_next;
                      return _cur;};
   void   reset()   { if (_root) {_cur = _root; _justReset = 1;} };
   // Second iterator, state is internal
   Form * current2(){ return _cur2; };
   Form * iter2()   { if (_justReset2) _justReset2 = 0;
                     else if (_cur2)  _cur2 = _cur2->_next;
                     return _cur2;};
   void   reset2()  { if (_root) {_cur2 = _root; _justReset2 = 1;} };
   int  count() {
     int  count = 0; reset();
     for( Form *cur; (cur =  iter()) != NULL; ) { ++count; };
     return count;
   }
   void dump() {
     reset();
     Form *cur;
     for(; (cur =  iter()) != NULL; ) {
       cur->dump();
     };
   }
   bool verify() {
     bool verified = true;
     reset();
     Form *cur;
     for(; (cur =  iter()) != NULL; ) {
       if ( ! cur->verify() ) verified = false;
     };
     return verified;
   }
   void output(FILE* fp) {
     reset();
     Form *cur;
     for( ; (cur =  iter()) != NULL; ) {
       cur->output(fp);
     };
   }
   FormList() { _justReset = 1; _justReset2 = 1; _root = NULL; _tail = NULL; _cur = NULL; _cur2 = NULL;};
   ~FormList();
 };
 //------------------------------NameList---------------------------------------
 // Extendable list of pointers, <char *>
 class NameList {
   friend class PreserveIter;
 private:
   int                _cur;         // Insert next entry here; count of entries
   int                _max;         // Number of spaces allocated
   const char       **_names;       // Array of names
 protected:
   int                _iter;        // position during iteration
   bool               _justReset;   // Set immediately after reset
 public:
   static const char *_signal;      // reserved user-defined string
   static const char *_signal2;      // reserved user-defined string
   static const char *_signal3;      // reserved user-defined string
   enum               { Not_in_list = -1 };
   void  addName(const char *name);
   void  add_signal();
   void  clear();                   // Remove all entries
   int   count() const;
   void  reset();                   // Reset iteration
   const char *iter();              // after reset(), first element : else next
   const char *current();           // return current element in iteration.
   const char *peek(int skip = 1);  // returns element + skip in iteration if there is one
   bool  current_is_signal();       // Return 'true' if current entry is signal
   bool  is_signal(const char *entry); // Return true if entry is a signal
   bool  search(const char *);      // Search for a name in the list
   int   index(const char *);       // Return index of name in list
   const char *name (intptr_t index);// Return name at index in list
   void  dump();                    // output to stderr
   void  output(FILE *fp);          // Output list of names to 'fp'
   NameList();
   ~NameList();
 };
 // Convenience class to preserve iteration state since iterators are
 // internal instead of being external.
 class PreserveIter {
  private:
   NameList* _list;
   int _iter;
   bool _justReset;
  public:
   PreserveIter(NameList* nl) {
     _list = nl;
     _iter = _list->_iter;
     _justReset = _list->_justReset;
   }
   ~PreserveIter() {
     _list->_iter = _iter;
     _list->_justReset = _justReset;
   }
 };
 //------------------------------NameAndList------------------------------------
 // Storage for a name and an associated list of names
 class NameAndList {
 private:
   const char *_name;
   NameList    _list;
 public:
   NameAndList(char *name);
   ~NameAndList();
   // Add to entries in list
   void        add_entry(const char *entry);
   // Access the name and its associated list.
   const char *name() const;
   void        reset();
   const char *iter();
   int count() { return _list.count(); }
   // Return the "index" entry in the list, zero-based
   const char *operator[](int index);
   void  dump();                    // output to stderr
   void  output(FILE *fp);          // Output list of names to 'fp'
 };
 //------------------------------ComponentList---------------------------------
 // Component lists always have match rule operands first, followed by parameter
 // operands which do not appear in the match list (in order of declaration).
 class ComponentList : private NameList {
 private:
   int   _matchcnt;                 // Count of match rule operands
 public:
   // This is a batch program.  (And I have a destructor bug!)
   void operator delete( void *ptr ) {}
   void insert(Component *component, bool mflag);
   void insert(const char *name, const char *opType, int usedef, bool mflag);
   int  count();
   int  match_count() { return _matchcnt; } // Get count of match rule opers
   Component *iter();               // after reset(), first element : else next
   Component *match_iter();         // after reset(), first element : else next
   Component *post_match_iter();    // after reset(), first element : else next
   void       reset();              // Reset iteration
   Component *current();            // return current element in iteration.
   // Return element at "position", else NULL
   Component *operator[](int position);
   Component *at(int position) { return (*this)[position]; }
   // Return first component having this name.
   const Component *search(const char *name);
   // Return number of USEs + number of DEFs
   int        num_operands();
   // Return zero-based position in list;  -1 if not in list.
   int        operand_position(const char *name, int usedef);
   // Find position for this name, regardless of use/def information
   int        operand_position(const char *name);
   // Find position for this name when looked up for output via "format"
   int        operand_position_format(const char *name);
   // Find position for the Label when looked up for output via "format"
   int        label_position();
   // Find position for the Method when looked up for output via "format"
   int        method_position();
   void       dump();               // output to stderr
   void       output(FILE *fp);     // Output list of names to 'fp'
   ComponentList();
   ~ComponentList();
 };
 //------------------------------SourceForm-------------------------------------
 class SourceForm : public Form {
 private:
 public:
   // Public Data
   char *_code;                     // Buffer for storing code text
   // Public Methods
   SourceForm(char* code);
   ~SourceForm();
   virtual const char* classname() { return "SourceForm"; }
   void dump();                    // Debug printer
   void output(FILE *fp);          // Write output files
 };
 class HeaderForm : public SourceForm {
 public:
   HeaderForm(char* code) : SourceForm(code) { }
   virtual const char* classname() { return "HeaderForm"; }
 };
 class PreHeaderForm : public SourceForm {
 public:
   PreHeaderForm(char* code) : SourceForm(code) { }
   virtual const char* classname() { return "PreHeaderForm"; }
 };
 //------------------------------Expr------------------------------------------
 #define STRING_BUFFER_LENGTH  2048
 // class Expr represents integer expressions containing constants and addition
 // Value must be in range zero through maximum positive integer. 32bits.
 // Expected use: instruction and operand costs
 class Expr {
 public:
   enum {
     Zero     = 0,
     Max      = 0x7fffffff
   };
   const char *_external_name;  // if !NULL, then print this instead of _expr
   const char *_expr;
   int         _min_value;
   int         _max_value;
   Expr();
   Expr(const char *cost);
   Expr(const char *name, const char *expression, int min_value, int max_value);
   Expr *clone() const;
   bool  is_unknown() const { return (this == Expr::get_unknown()); }
   bool  is_zero()    const { return (_min_value == Expr::Zero && _max_value == Expr::Zero); }
   bool  less_than_or_equal(const Expr *c) const { return (_max_value <= c->_min_value); }
   void  add(const Expr *c);
   void  add(const char *c);
   void  add(const char *c, ArchDesc &AD);   // check if 'c' is defined in <arch>.ad
   void  set_external_name(const char *name) { _external_name = name; }
   const char *as_string()  const { return (_external_name != NULL ? _external_name : _expr); }
   void  print()            const;
   void  print_define(FILE *fp) const;
   void  print_assert(FILE *fp) const;
   static Expr *get_unknown();   // Returns pointer to shared unknown cost instance
   static char *buffer()         { return &external_buffer[0]; }
   static bool  init_buffers();  // Fill buffers with 0
   static bool  check_buffers(); // if buffer use may have overflowed, assert
 private:
   static Expr *_unknown_expr;
   static char string_buffer[STRING_BUFFER_LENGTH];
   static char external_buffer[STRING_BUFFER_LENGTH];
   static bool _init_buffers;
   const char *compute_expr(const Expr *c1, const Expr *c2);  // cost as string after adding 'c1' and 'c2'
   int         compute_min (const Expr *c1, const Expr *c2);  // minimum after adding 'c1' and 'c2'
   int         compute_max (const Expr *c1, const Expr *c2);  // maximum after adding 'c1' and 'c2'
   const char *compute_external(const Expr *c1, const Expr *c2);  // external name after adding 'c1' and 'c2'
 };
 //------------------------------ExprDict---------------------------------------
 // Dictionary containing Exprs
 class ExprDict {
 private:
   Dict         _expr;              // map names, char*, to their Expr* or NULL
   NameList     _defines;           // record the order of definitions entered with define call
   // Disable public use of constructor, copy-ctor, operator =, operator ==
   ExprDict( );
   ExprDict( const ExprDict & );    // Deep-copy guts
   ExprDict &operator =( const ExprDict & );
   // == compares two dictionaries; they must have the same keys (their keys
   // must match using CmpKey) and they must have the same values (pointer
   // comparison).  If so 1 is returned, if not 0 is returned.
   bool operator ==(const ExprDict &d) const; // Compare dictionaries for equal
 public:
   // cmp is a key comparision routine.  hash is a routine to hash a key.
   ExprDict( CmpKey cmp, Hash hash, Arena *arena );
   ~ExprDict();
   // Return # of key-value pairs in dict
   int Size(void) const;
   // define inserts the given key-value pair into the dictionary,
   // and records the name in order for later output, ...
   const Expr  *define(const char *name, Expr *expr);
   // Insert inserts the given key-value pair into the dictionary.  The prior
   // value of the key is returned; NULL if the key was not previously defined.
   const Expr  *Insert(const char *name, Expr *expr); // A new key-value
   // Find finds the value of a given key; or NULL if not found.
   // The dictionary is NOT changed.
   const Expr  *operator [](const char *name) const;  // Do a lookup
   void print_defines(FILE *fp);
   void print_asserts(FILE *fp);
   void dump();
 };
 #endif // SHARE_VM_ADLC_FORMS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/adlc/forms.hpp@246d977b51f2 (annotated)

src/share/vm/adlc/forms.hpp