jdk8-mips64-public/hotspot: src/share/vm/adlc/formssel.hpp@f9094a5e1c8a

6857159: local schedule failed with checkcast of Thread.currentThread()
Reviewed-by: kvn

     1 /*

     2  * Copyright 1998-2009 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // FORMSSEL.HPP - ADL Parser Instruction Selection Forms Classes

    27 // Class List

    28 class Form;

    29 class InstructForm;

    30 class MachNodeForm;

    31 class OperandForm;

    32 class OpClassForm;

    33 class AttributeForm;

    34 class RegisterForm;

    35 class PipelineForm;

    36 class SourceForm;

    37 class EncodeForm;

    38 class Component;

    39 class Constraint;

    40 class Predicate;

    41 class MatchRule;

    42 class Attribute;

    43 class Effect;

    44 class ExpandRule;

    45 class RewriteRule;

    46 class ConstructRule;

    47 class FormatRule;

    48 class Peephole;

    49 class EncClass;

    50 class Interface;

    51 class RegInterface;

    52 class ConstInterface;

    53 class MemInterface;

    54 class CondInterface;

    55 class Opcode;

    56 class InsEncode;

    57 class RegDef;

    58 class RegClass;

    59 class AllocClass;

    60 class ResourceForm;

    61 class PipeDesc;

    62 class PipeClass;

    63 class PeepMatch;

    64 class PeepConstraint;

    65 class PeepReplace;

    66 class MatchList;

    68 class ArchDesc;

    70 //==============================Instructions===================================

    71 //------------------------------InstructForm-----------------------------------

    72 class InstructForm : public Form {

    73 private:

    74   bool          _ideal_only;       // Not a user-defined instruction

    75   // Members used for tracking CISC-spilling

    76   uint          _cisc_spill_operand;// Which operand may cisc-spill

    77   void           set_cisc_spill_operand(uint op_index) { _cisc_spill_operand = op_index; }

    78   bool          _is_cisc_alternate;

    79   InstructForm  *_cisc_spill_alternate;// cisc possible replacement

    80   const char    *_cisc_reg_mask_name;

    81   InstructForm  *_short_branch_form;

    82   bool           _is_short_branch;

    83   uint           _alignment;

    85 public:

    86   // Public Data

    87   const char    *_ident;           // Name of this instruction

    88   NameList       _parameters;      // Locally defined names

    89   FormDict       _localNames;      // Table of operands & their types

    90   MatchRule     *_matrule;         // Matching rule for this instruction

    91   Opcode        *_opcode;          // Encoding of the opcode for instruction

    92   char          *_size;            // Size of instruction

    93   InsEncode     *_insencode;       // Encoding class instruction belongs to

    94   Attribute     *_attribs;         // List of Attribute rules

    95   Predicate     *_predicate;       // Predicate test for this instruction

    96   FormDict       _effects;         // Dictionary of effect rules

    97   ExpandRule    *_exprule;         // Expand rule for this instruction

    98   RewriteRule   *_rewrule;         // Rewrite rule for this instruction

    99   FormatRule    *_format;          // Format for assembly generation

   100   Peephole      *_peephole;        // List of peephole rules for instruction

   101   const char    *_ins_pipe;        // Instruction Scheduline description class

   103   uint          *_uniq_idx;        // Indexes of unique operands

   104   int            _uniq_idx_length; // Length of _uniq_idx array

   105   uint           _num_uniq;        // Number  of unique operands

   106   ComponentList  _components;      // List of Components matches MachNode's

   107                                    // operand structure

   109   // Public Methods

   110   InstructForm(const char *id, bool ideal_only = false);

   111   InstructForm(const char *id, InstructForm *instr, MatchRule *rule);

   112   ~InstructForm();

   114   // Dynamic type check

   115   virtual InstructForm *is_instruction() const;

   117   virtual bool        ideal_only() const;

   119   // This instruction sets a result

   120   virtual bool        sets_result() const;

   121   // This instruction needs projections for additional DEFs or KILLs

   122   virtual bool        needs_projections();

   123   // This instruction needs extra nodes for temporary inputs

   124   virtual bool        has_temps();

   125   // This instruction defines or kills more than one object

   126   virtual uint        num_defs_or_kills();

   127   // This instruction has an expand rule?

   128   virtual bool        expands() const ;

   129   // Return this instruction's first peephole rule, or NULL

   130   virtual Peephole   *peepholes() const;

   131   // Add a peephole rule to this instruction

   132   virtual void        append_peephole(Peephole *peep);

   134   virtual bool        is_pinned(FormDict &globals); // should be pinned inside block

   135   virtual bool        is_projection(FormDict &globals); // node requires projection

   136   virtual bool        is_parm(FormDict &globals); // node matches ideal 'Parm'

   137   // ideal opcode enumeration

   138   virtual const char *ideal_Opcode(FormDict &globals)  const;

   139   virtual int         is_expensive() const;     // node matches ideal 'CosD'

   140   virtual int         is_empty_encoding() const; // _size=0 and/or _insencode empty

   141   virtual int         is_tls_instruction() const; // tlsLoadP rule or ideal ThreadLocal

   142   virtual int         is_ideal_copy() const;    // node matches ideal 'Copy*'

   143   virtual bool        is_ideal_unlock() const;  // node matches ideal 'Unlock'

   144   virtual bool        is_ideal_call_leaf() const; // node matches ideal 'CallLeaf'

   145   virtual bool        is_ideal_if()   const;    // node matches ideal 'If'

   146   virtual bool        is_ideal_fastlock() const; // node matches 'FastLock'

   147   virtual bool        is_ideal_membar() const;  // node matches ideal 'MemBarXXX'

   148   virtual bool        is_ideal_loadPC() const;  // node matches ideal 'LoadPC'

   149   virtual bool        is_ideal_box() const;     // node matches ideal 'Box'

   150   virtual bool        is_ideal_goto() const;    // node matches ideal 'Goto'

   151   virtual bool        is_ideal_branch() const;  // "" 'If' | 'Goto' | 'LoopEnd' | 'Jump'

   152   virtual bool        is_ideal_jump() const;    // node matches ideal 'Jump'

   153   virtual bool        is_ideal_return() const;  // node matches ideal 'Return'

   154   virtual bool        is_ideal_halt() const;    // node matches ideal 'Halt'

   155   virtual bool        is_ideal_safepoint() const; // node matches 'SafePoint'

   156   virtual bool        is_ideal_nop() const;     // node matches 'Nop'

   157   virtual bool        is_ideal_control() const; // control node

   159   virtual Form::CallType is_ideal_call() const; // matches ideal 'Call'

   160   virtual Form::DataType is_ideal_load() const; // node matches ideal 'LoadXNode'

   161   // Should antidep checks be disabled for this Instruct

   162   // See definition of MatchRule::skip_antidep_check

   163   bool skip_antidep_check() const;

   164   virtual Form::DataType is_ideal_store() const;// node matches ideal 'StoreXNode'

   165           bool        is_ideal_mem() const { return is_ideal_load() != Form::none || is_ideal_store() != Form::none; }

   166   virtual uint        two_address(FormDict &globals); // output reg must match input reg

   167   // when chaining a constant to an instruction, return 'true' and set opType

   168   virtual Form::DataType is_chain_of_constant(FormDict &globals);

   169   virtual Form::DataType is_chain_of_constant(FormDict &globals, const char * &opType);

   170   virtual Form::DataType is_chain_of_constant(FormDict &globals, const char * &opType, const char * &result_type);

   172   // Check if a simple chain rule

   173   virtual bool        is_simple_chain_rule(FormDict &globals) const;

   175   // check for structural rematerialization

   176   virtual bool        rematerialize(FormDict &globals, RegisterForm *registers);

   178   // loads from memory, so must check for anti-dependence

   179   virtual bool        needs_anti_dependence_check(FormDict &globals) const;

   180   virtual int         memory_operand(FormDict &globals) const;

   181           bool        is_wide_memory_kill(FormDict &globals) const;

   183   enum memory_operand_type {

   184     NO_MEMORY_OPERAND = -1,

   185     MANY_MEMORY_OPERANDS = 999999

   186   };

   189   // This instruction captures the machine-independent bottom_type

   190   // Expected use is for pointer vs oop determination for LoadP

   191   virtual bool        captures_bottom_type() const;

   193   virtual const char *cost();      // Access ins_cost attribute

   194   virtual uint        num_opnds(); // Count of num_opnds for MachNode class

   195   virtual uint        num_post_match_opnds();

   196   virtual uint        num_consts(FormDict &globals) const;// Constants in match rule

   197   // Constants in match rule with specified type

   198   virtual uint        num_consts(FormDict &globals, Form::DataType type) const;

   200   // Return the register class associated with 'leaf'.

   201   virtual const char *out_reg_class(FormDict &globals);

   203   // number of ideal node inputs to skip

   204   virtual uint        oper_input_base(FormDict &globals);

   206   // Does this instruction need a base-oop edge?

   207   int needs_base_oop_edge(FormDict &globals) const;

   209   // Build instruction predicates.  If the user uses the same operand name

   210   // twice, we need to check that the operands are pointer-eequivalent in

   211   // the DFA during the labeling process.

   212   Predicate *build_predicate();

   214   virtual void        build_components(); // top-level operands

   215   // Return zero-based position in component list; -1 if not in list.

   216   virtual int         operand_position(const char *name, int usedef);

   217   virtual int         operand_position_format(const char *name);

   219   // Return zero-based position in component list; -1 if not in list.

   220   virtual int         label_position();

   221   virtual int         method_position();

   222   // Return number of relocation entries needed for this instruction.

   223   virtual uint        reloc(FormDict &globals);

   225   const char         *reduce_result();

   226   // Return the name of the operand on the right hand side of the binary match

   227   // Return NULL if there is no right hand side

   228   const char         *reduce_right(FormDict &globals)  const;

   229   const char         *reduce_left(FormDict &globals)   const;

   231   // Base class for this instruction, MachNode except for calls

   232   virtual const char *mach_base_class()  const;

   234   // Check if this instruction can cisc-spill to 'alternate'

   235   bool                cisc_spills_to(ArchDesc &AD, InstructForm *alternate);

   236   InstructForm       *cisc_spill_alternate() { return _cisc_spill_alternate; }

   237   uint                cisc_spill_operand() const { return _cisc_spill_operand; }

   238   bool                is_cisc_alternate() const { return _is_cisc_alternate; }

   239   void                set_cisc_alternate(bool val) { _is_cisc_alternate = val; }

   240   const char         *cisc_reg_mask_name() const { return _cisc_reg_mask_name; }

   241   void                set_cisc_reg_mask_name(const char *rm_name) { _cisc_reg_mask_name = rm_name; }

   242   // Output cisc-method prototypes and method bodies

   243   void                declare_cisc_version(ArchDesc &AD, FILE *fp_cpp);

   244   bool                define_cisc_version (ArchDesc &AD, FILE *fp_cpp);

   246   bool                check_branch_variant(ArchDesc &AD, InstructForm *short_branch);

   248   bool                is_short_branch() { return _is_short_branch; }

   249   void                set_short_branch(bool val) { _is_short_branch = val; }

   251   InstructForm       *short_branch_form() { return _short_branch_form; }

   252   bool                has_short_branch_form() { return _short_branch_form != NULL; }

   253   // Output short branch prototypes and method bodies

   254   void                declare_short_branch_methods(FILE *fp_cpp);

   255   bool                define_short_branch_methods(FILE *fp_cpp);

   257   uint                alignment() { return _alignment; }

   258   void                set_alignment(uint val) { _alignment = val; }

   260   // Seach through operands to determine operands unique positions.

   261   void                set_unique_opnds();

   262   uint                num_unique_opnds() { return _num_uniq; }

   263   uint                unique_opnds_idx(int idx) {

   264                         if( _uniq_idx != NULL && idx > 0 ) {

   265                           assert(idx < _uniq_idx_length, "out of bounds");

   266                           return _uniq_idx[idx];

   267                         } else {

   268                           return idx;

   269                         }

   270   }

   272   // Operands which are only KILLs aren't part of the input array and

   273   // require special handling in some cases.  Their position in this

   274   // operand list is higher than the number of unique operands.

   275   bool is_noninput_operand(uint idx) {

   276     return (idx >= num_unique_opnds());

   277   }

   279   // --------------------------- FILE *output_routines

   280   //

   281   // Generate the format call for the replacement variable

   282   void                rep_var_format(FILE *fp, const char *rep_var);

   283   // Generate index values needed for determining the operand position

   284   void                index_temps   (FILE *fp, FormDict &globals, const char *prefix = "", const char *receiver = "");

   285   // ---------------------------

   287   virtual bool verify();           // Check consistency after parsing

   289   virtual void dump();             // Debug printer

   290   virtual void output(FILE *fp);   // Write to output files

   291 };

   293 //------------------------------EncodeForm-------------------------------------

   294 class EncodeForm : public Form {

   295 private:

   297 public:

   298   // Public Data

   299   NameList  _eclasses;            // List of encode class names

   300   Dict      _encClass;            // Map encode class names to EncClass objects

   302   // Public Methods

   303   EncodeForm();

   304   ~EncodeForm();

   306   EncClass   *add_EncClass(const char *className);

   307   EncClass   *encClass(const char *className);

   309   const char *encClassPrototype(const char *className);

   310   const char *encClassBody(const char *className);

   312   void dump();                     // Debug printer

   313   void output(FILE *fp);           // Write info to output files

   314 };

   316 //------------------------------EncClass---------------------------------------

   317 class EncClass : public Form {

   318 public:

   319   // NameList for parameter type and name

   320   NameList       _parameter_type;

   321   NameList       _parameter_name;

   323   // Breakdown the encoding into strings separated by $replacement_variables

   324   // There is an entry in _strings, perhaps NULL, that precedes each _rep_vars

   325   NameList       _code;            // Strings passed through to tty->print

   326   NameList       _rep_vars;        // replacement variables

   328   NameList       _parameters;      // Locally defined names

   329   FormDict       _localNames;      // Table of components & their types

   331 public:

   332   // Public Data

   333   const char    *_name;            // encoding class name

   335   // Public Methods

   336   EncClass(const char *name);

   337   ~EncClass();

   339   // --------------------------- Parameters

   340   // Add a parameter <type,name> pair

   341   void add_parameter(const char *parameter_type, const char *parameter_name);

   342   // Verify operand types in parameter list

   343   bool check_parameter_types(FormDict &globals);

   344   // Obtain the zero-based index corresponding to a replacement variable

   345   int         rep_var_index(const char *rep_var);

   346   int         num_args() { return _parameter_name.count(); }

   348   // --------------------------- Code Block

   349   // Add code

   350   void add_code(const char *string_preceding_replacement_var);

   351   // Add a replacement variable or one of its subfields

   352   // Subfields are stored with a leading '$'

   353   void add_rep_var(char *replacement_var);

   355   bool verify();

   356   void dump();

   357   void output(FILE *fp);

   358 };

   360 //------------------------------MachNode---------------------------------------

   361 class MachNodeForm: public Form {

   362 private:

   364 public:

   365   char          *_ident;           // Name of this instruction

   366   const char    *_machnode_pipe;   // Instruction Scheduline description class

   368   // Public Methods

   369   MachNodeForm(char *id);

   370   ~MachNodeForm();

   372   virtual MachNodeForm *is_machnode() const;

   374   void dump();                     // Debug printer

   375   void output(FILE *fp);           // Write info to output files

   376 };

   378 //------------------------------Opcode-----------------------------------------

   379 class Opcode : public Form {

   380 private:

   382 public:

   383   // Public Data

   384   // Strings representing instruction opcodes, user defines placement in emit

   385   char *_primary;

   386   char *_secondary;

   387   char *_tertiary;

   389   enum opcode_type {

   390     NOT_AN_OPCODE = -1,

   391     PRIMARY   = 1,

   392     SECONDARY = 2,

   393     TERTIARY  = 3

   394   };

   396   // Public Methods

   397   Opcode(char *primary, char *secondary, char *tertiary);

   398   ~Opcode();

   400   static Opcode::opcode_type as_opcode_type(const char *designator);

   402   void dump();

   403   void output(FILE *fp);

   405   // --------------------------- FILE *output_routines

   406   bool print_opcode(FILE *fp, Opcode::opcode_type desired_opcode);

   407 };

   409 //------------------------------InsEncode--------------------------------------

   410 class InsEncode : public Form {

   411 private:

   412   // Public Data (access directly only for reads)

   413   // The encodings can only have the values predefined by the ADLC:

   414   // blank, RegReg, RegMem, MemReg, ...

   415   NameList    _encoding;

   416   // NameList    _parameter;

   417   // The parameters for each encoding are preceeded by a NameList::_signal

   418   // and follow the parameters for the previous encoding.

   420   // char *_encode;                  // Type of instruction encoding

   422 public:

   423   // Public Methods

   424   InsEncode();

   425   ~InsEncode();

   427   // Add "encode class name" and its parameters

   428   NameAndList  *add_encode(char *encode_method_name);

   429   // Parameters are added to the returned "NameAndList" by the parser

   431   // Access the list of encodings

   432   void          reset();

   433   const char   *encode_class_iter();

   435   // Returns the number of arguments to the current encoding in the iteration

   436   int current_encoding_num_args() {

   437     return ((NameAndList*)_encoding.current())->count();

   438   }

   440   // --------------------------- Parameters

   441   // The following call depends upon position within encode_class_iteration

   442   //

   443   // Obtain parameter name from zero based index

   444   const char   *rep_var_name(InstructForm &inst, uint param_no);

   445   // ---------------------------

   447   void dump();

   448   void output(FILE *fp);

   449 };

   451 //------------------------------Effect-----------------------------------------

   452 class Effect : public Form {

   453 private:

   455 public:

   456   // Public Data

   457   const char  *_name;            // Pre-defined name for effect

   458   int         _use_def;          // Enumeration value of effect

   460   // Public Methods

   461   Effect(const char *name);      // Constructor

   462   ~Effect();                     // Destructor

   464   // Dynamic type check

   465   virtual Effect *is_effect() const;

   467   // Return 'true' if this use def info equals the parameter

   468   bool  is(int use_def_kill_enum) const;

   469   // Return 'true' if this use def info is a superset of parameter

   470   bool  isa(int use_def_kill_enum) const;

   472   void dump();                   // Debug printer

   473   void output(FILE *fp);         // Write info to output files

   474 };

   476 //------------------------------ExpandRule-------------------------------------

   477 class ExpandRule : public Form {

   478 private:

   479   NameList _expand_instrs;        // ordered list of instructions and operands

   481 public:

   482   // Public Data

   483   NameList _newopers;             // List of newly created operands

   484   Dict     _newopconst;           // Map new operands to their constructors

   486   void     add_instruction(NameAndList *instruction_name_and_operand_list);

   487   void     reset_instructions();

   488   NameAndList *iter_instructions();

   490   // Public Methods

   491   ExpandRule();                   // Constructor

   492   ~ExpandRule();                  // Destructor

   494   void dump();                    // Debug printer

   495   void output(FILE *fp);          // Write info to output files

   496 };

   498 //------------------------------RewriteRule------------------------------------

   499 class RewriteRule : public Form {

   500 private:

   502 public:

   503   // Public Data

   504   SourceForm     *_condition;      // Rewrite condition code

   505   InstructForm   *_instrs;         // List of instructions to expand to

   506   OperandForm    *_opers;          // List of operands generated by expand

   507   char           *_tempParams;     // Hold string until parser is finished.

   508   char           *_tempBlock;      // Hold string until parser is finished.

   510   // Public Methods

   511   RewriteRule(char* params, char* block) ;

   512   ~RewriteRule();                  // Destructor

   513   void dump();                     // Debug printer

   514   void output(FILE *fp);           // Write info to output files

   515 };

   518 //==============================Operands=======================================

   519 //------------------------------OpClassForm------------------------------------

   520 class OpClassForm : public Form {

   521 public:

   522   // Public Data

   523   const char    *_ident;           // Name of this operand

   524   NameList       _oplst;           // List of operand forms included in class

   526   // Public Methods

   527   OpClassForm(const char *id);

   528   ~OpClassForm();

   530   // dynamic type check

   531   virtual OpClassForm         *is_opclass() const;

   532   virtual Form::InterfaceType  interface_type(FormDict &globals) const;

   533   virtual bool                 stack_slots_only(FormDict &globals) const;

   535   virtual bool                 is_cisc_mem(FormDict &globals) const;

   538   // Min and Max opcodes of operands in this operand class

   539   int _minCode;

   540   int _maxCode;

   542   virtual bool ideal_only() const;

   543   virtual void dump();             // Debug printer

   544   virtual void output(FILE *fp);   // Write to output files

   545 };

   547 //------------------------------OperandForm------------------------------------

   548 class OperandForm : public OpClassForm {

   549 private:

   550   bool         _ideal_only; // Not a user-defined instruction

   552 public:

   553   // Public Data

   554   NameList       _parameters; // Locally defined names

   555   FormDict       _localNames; // Table of components & their types

   556   MatchRule     *_matrule;    // Matching rule for this operand

   557   Interface     *_interface;  // Encoding interface for this operand

   558   Attribute     *_attribs;    // List of Attribute rules

   559   Predicate     *_predicate;  // Predicate test for this operand

   560   Constraint    *_constraint; // Constraint Rule for this operand

   561   ConstructRule *_construct;  // Construction of operand data after matching

   562   FormatRule    *_format;     // Format for assembly generation

   563   NameList       _classes;    // List of opclasses which contain this oper

   565   ComponentList _components;  //

   567   // Public Methods

   568   OperandForm(const char *id);

   569   OperandForm(const char *id, bool ideal_only);

   570   ~OperandForm();

   572   // Dynamic type check

   573   virtual OperandForm *is_operand() const;

   575   virtual bool        ideal_only() const;

   576   virtual Form::InterfaceType interface_type(FormDict &globals) const;

   577   virtual bool                 stack_slots_only(FormDict &globals) const;

   579   virtual const char *cost();  // Access ins_cost attribute

   580   virtual uint        num_leaves() const;// Leaves in complex operand

   581   // Constants in operands' match rules

   582   virtual uint        num_consts(FormDict &globals) const;

   583   // Constants in operand's match rule with specified type

   584   virtual uint        num_consts(FormDict &globals, Form::DataType type) const;

   585   // Pointer Constants in operands' match rules

   586   virtual uint        num_const_ptrs(FormDict &globals) const;

   587   // The number of input edges in the machine world == num_leaves - num_consts

   588   virtual uint        num_edges(FormDict &globals) const;

   590   // Check if this operand is usable for cisc-spilling

   591   virtual bool        is_cisc_reg(FormDict &globals) const;

   593   // node matches ideal 'Bool', grab condition codes from the ideal world

   594   virtual bool        is_ideal_bool()  const;

   596   // Has an integer constant suitable for spill offsets

   597   bool has_conI(FormDict &globals) const {

   598     return (num_consts(globals,idealI) == 1) && !is_ideal_bool(); }

   599   bool has_conL(FormDict &globals) const {

   600     return (num_consts(globals,idealL) == 1) && !is_ideal_bool(); }

   602   // Node is user-defined operand for an sRegX

   603   virtual Form::DataType is_user_name_for_sReg() const;

   605   // Return ideal type, if there is a single ideal type for this operand

   606   virtual const char *ideal_type(FormDict &globals, RegisterForm *registers = NULL) const;

   607   // If there is a single ideal type for this interface field, return it.

   608   virtual const char *interface_ideal_type(FormDict   &globals,

   609                                            const char *field_name) const;

   611   // Return true if this operand represents a bound register class

   612   bool is_bound_register() const;

   614   // Return the Register class for this operand.  Returns NULL if

   615   // operand isn't a register form.

   616   RegClass* get_RegClass() const;

   618   virtual       bool  is_interface_field(const char   *field_name,

   619                                          const char   * &value) const;

   621   // If this operand has a single ideal type, return its type

   622   virtual Form::DataType simple_type(FormDict &globals) const;

   623   // If this operand is an ideal constant, return its type

   624   virtual Form::DataType is_base_constant(FormDict &globals) const;

   626   // "true" if this operand is a simple type that is swallowed

   627   virtual bool        swallowed(FormDict &globals) const;

   629   // Return register class name if a constraint specifies the register class.

   630   virtual const char *constrained_reg_class() const;

   631   // Return the register class associated with 'leaf'.

   632   virtual const char *in_reg_class(uint leaf, FormDict &globals);

   634   // Build component list from MatchRule and operand's parameter list

   635   virtual void        build_components(); // top-level operands

   637   // Return zero-based position in component list; -1 if not in list.

   638   virtual int         operand_position(const char *name, int usedef);

   640   // Return zero-based position in component list; -1 if not in list.

   641   virtual int         constant_position(FormDict &globals, const Component *comp);

   642   virtual int         constant_position(FormDict &globals, const char *local_name);

   643   // Return the operand form corresponding to the given index, else NULL.

   644   virtual OperandForm *constant_operand(FormDict &globals, uint const_index);

   646   // Return zero-based position in component list; -1 if not in list.

   647   virtual int         register_position(FormDict &globals, const char *regname);

   649   const char         *reduce_result() const;

   650   // Return the name of the operand on the right hand side of the binary match

   651   // Return NULL if there is no right hand side

   652   const char         *reduce_right(FormDict &globals)  const;

   653   const char         *reduce_left(FormDict &globals)   const;

   656   // --------------------------- FILE *output_routines

   657   //

   658   // Output code for disp_is_oop, if true.

   659   void                disp_is_oop(FILE *fp, FormDict &globals);

   660   // Generate code for internal and external format methods

   661   void                int_format(FILE *fp, FormDict &globals, uint index);

   662   void                ext_format(FILE *fp, FormDict &globals, uint index);

   663   void                format_constant(FILE *fp, uint con_index, uint con_type);

   664   // Output code to access the value of the index'th constant

   665   void                access_constant(FILE *fp, FormDict &globals,

   666                                       uint con_index);

   667   // ---------------------------

   670   virtual void dump();             // Debug printer

   671   virtual void output(FILE *fp);   // Write to output files

   672 };

   674 //------------------------------Constraint-------------------------------------

   675 class Constraint : public Form {

   676 private:

   678 public:

   679   const char      *_func;          // Constraint function

   680   const char      *_arg;           // function's argument

   682   // Public Methods

   683   Constraint(const char *func, const char *arg); // Constructor

   684   ~Constraint();

   686   bool stack_slots_only() const;

   688   void dump();                     // Debug printer

   689   void output(FILE *fp);           // Write info to output files

   690 };

   692 //------------------------------Predicate--------------------------------------

   693 class Predicate : public Form {

   694 private:

   696 public:

   697   // Public Data

   698   char *_pred;                     // C++ source string for predicate

   700   // Public Methods

   701   Predicate(char *pr);

   702   ~Predicate();

   704   void dump();

   705   void output(FILE *fp);

   706 };

   708 //------------------------------Interface--------------------------------------

   709 class Interface : public Form {

   710 private:

   712 public:

   713   // Public Data

   714   const char *_name;               // String representing the interface name

   716   // Public Methods

   717   Interface(const char *name);

   718   ~Interface();

   720   virtual Form::InterfaceType interface_type(FormDict &globals) const;

   722   RegInterface   *is_RegInterface();

   723   MemInterface   *is_MemInterface();

   724   ConstInterface *is_ConstInterface();

   725   CondInterface  *is_CondInterface();

   728   void dump();

   729   void output(FILE *fp);

   730 };

   732 //------------------------------RegInterface-----------------------------------

   733 class RegInterface : public Interface {

   734 private:

   736 public:

   737   // Public Methods

   738   RegInterface();

   739   ~RegInterface();

   741   void dump();

   742   void output(FILE *fp);

   743 };

   745 //------------------------------ConstInterface---------------------------------

   746 class ConstInterface : public Interface {

   747 private:

   749 public:

   750   // Public Methods

   751   ConstInterface();

   752   ~ConstInterface();

   754   void dump();

   755   void output(FILE *fp);

   756 };

   758 //------------------------------MemInterface-----------------------------------

   759 class MemInterface : public Interface {

   760 private:

   762 public:

   763   // Public Data

   764   char *_base;                     // Base address

   765   char *_index;                    // index

   766   char *_scale;                    // scaling factor

   767   char *_disp;                     // displacement

   769   // Public Methods

   770   MemInterface(char *base, char *index, char *scale, char *disp);

   771   ~MemInterface();

   773   void dump();

   774   void output(FILE *fp);

   775 };

   777 //------------------------------CondInterface----------------------------------

   778 class CondInterface : public Interface {

   779 private:

   781 public:

   782   const char *_equal;

   783   const char *_not_equal;

   784   const char *_less;

   785   const char *_greater_equal;

   786   const char *_less_equal;

   787   const char *_greater;

   788   const char *_equal_format;

   789   const char *_not_equal_format;

   790   const char *_less_format;

   791   const char *_greater_equal_format;

   792   const char *_less_equal_format;

   793   const char *_greater_format;

   795   // Public Methods

   796   CondInterface(const char* equal,         const char* equal_format,

   797                 const char* not_equal,     const char* not_equal_format,

   798                 const char* less,          const char* less_format,

   799                 const char* greater_equal, const char* greater_equal_format,

   800                 const char* less_equal,    const char* less_equal_format,

   801                 const char* greater,       const char* greater_format);

   802   ~CondInterface();

   804   void dump();

   805   void output(FILE *fp);

   806 };

   808 //------------------------------ConstructRule----------------------------------

   809 class ConstructRule : public Form {

   810 private:

   812 public:

   813   // Public Data

   814   char *_expr;                     // String representing the match expression

   815   char *_construct;                // String representing C++ constructor code

   817   // Public Methods

   818   ConstructRule(char *cnstr);

   819   ~ConstructRule();

   821   void dump();

   822   void output(FILE *fp);

   823 };

   826 //==============================Shared=========================================

   827 //------------------------------AttributeForm----------------------------------

   828 class AttributeForm : public Form {

   829 private:

   830   // counters for unique instruction or operand ID

   831   static int   _insId;             // user-defined machine instruction types

   832   static int   _opId;              // user-defined operand types

   834   int  id;                         // hold type for this object

   836 public:

   837   // Public Data

   838   char *_attrname;                 // Name of attribute

   839   int   _atype;                    // Either INS_ATTR or OP_ATTR

   840   char *_attrdef;                  // C++ source which evaluates to constant

   842   // Public Methods

   843   AttributeForm(char *attr, int type, char *attrdef);

   844   ~AttributeForm();

   846   // Dynamic type check

   847   virtual AttributeForm *is_attribute() const;

   849   int  type() { return id;}        // return this object's "id"

   851   static const char* _ins_cost;        // "ins_cost"

   852   static const char* _ins_pc_relative; // "ins_pc_relative"

   853   static const char* _op_cost;         // "op_cost"

   855   void dump();                     // Debug printer

   856   void output(FILE *fp);           // Write output files

   857 };

   859 //------------------------------Component--------------------------------------

   860 class Component : public Form {

   861 private:

   863 public:

   864   // Public Data

   865   const char *_name;              // Name of this component

   866   const char *_type;              // Type of this component

   867   int         _usedef;            // Value of component

   869   // Public Methods

   870   Component(const char *name, const char *type, int usedef);

   871   ~Component();

   874   // Return 'true' if this use def info equals the parameter

   875   bool  is(int use_def_kill_enum) const;

   876   // Return 'true' if this use def info is a superset of parameter

   877   bool  isa(int use_def_kill_enum) const;

   878   int   promote_use_def_info(int new_use_def);

   879   const char *base_type(FormDict &globals);

   880   // Form::DataType is_base_constant(FormDict &globals);

   882   void dump();                     // Debug printer

   883   void output(FILE *fp);           // Write to output files

   885 public:

   886   // Implementation depends upon working bit intersection and union.

   887   enum use_def_enum {

   888     INVALID = 0x0,

   889     USE     = 0x1,

   890     DEF     = 0x2, USE_DEF   = 0x3,

   891     KILL    = 0x4, USE_KILL  = 0x5,

   892     SYNTHETIC = 0x8,

   893     TEMP = USE | SYNTHETIC

   894   };

   895 };

   898 //------------------------------MatchNode--------------------------------------

   899 class MatchNode : public Form {

   900 private:

   902 public:

   903   // Public Data

   904   const char  *_result;            // The name of the output of this node

   905   const char  *_name;              // The name that appeared in the match rule

   906   const char  *_opType;            // The Operation/Type matched

   907   MatchNode   *_lChild;            // Left child in expression tree

   908   MatchNode   *_rChild;            // Right child in expression tree

   909   int         _numleaves;          // Sum of numleaves for all direct children

   910   ArchDesc    &_AD;                // Reference to ArchDesc object

   911   char        *_internalop;        // String representing internal operand

   912   int         _commutative_id;     // id of commutative operation

   914   // Public Methods

   915   MatchNode(ArchDesc &ad, const char *result = 0, const char *expr = 0,

   916             const char *opType=0, MatchNode *lChild=NULL,

   917             MatchNode *rChild=NULL);

   918   MatchNode(ArchDesc &ad, MatchNode& mNode); // Shallow copy constructor;

   919   MatchNode(ArchDesc &ad, MatchNode& mNode, int clone); // Construct clone

   920   ~MatchNode();

   922   // return 0 if not found:

   923   // return 1 if found and position is incremented by operand offset in rule

   924   bool       find_name(const char *str, int &position) const;

   925   bool       find_type(const char *str, int &position) const;

   926   virtual void append_components(FormDict& locals, ComponentList& components,

   927                                  bool def_flag = false) const;

   928   bool       base_operand(uint &position, FormDict &globals,

   929                          const char * &result, const char * &name,

   930                          const char * &opType) const;

   931   // recursive count on operands

   932   uint       num_consts(FormDict &globals) const;

   933   uint       num_const_ptrs(FormDict &globals) const;

   934   // recursive count of constants with specified type

   935   uint       num_consts(FormDict &globals, Form::DataType type) const;

   936   // uint       num_consts() const;   // Local inspection only

   937   int        needs_ideal_memory_edge(FormDict &globals) const;

   938   int        needs_base_oop_edge() const;

   940   // Help build instruction predicates.  Search for operand names.

   941   void count_instr_names( Dict &names );

   942   int build_instr_pred( char *buf, const char *name, int cnt );

   943   void build_internalop( );

   945   // Return the name of the operands associated with reducing to this operand:

   946   // The result type, plus the left and right sides of the binary match

   947   // Return NULL if there is no left or right hand side

   948   bool       sets_result()   const;    // rule "Set"s result of match

   949   const char *reduce_right(FormDict &globals)  const;

   950   const char *reduce_left (FormDict &globals)  const;

   952   // Recursive version of check in MatchRule

   953   int        cisc_spill_match(FormDict& globals, RegisterForm* registers,

   954                               MatchNode* mRule2, const char* &operand,

   955                               const char* &reg_type);

   956   int        cisc_spill_merge(int left_result, int right_result);

   958   virtual bool equivalent(FormDict& globals, MatchNode* mNode2);

   960   void       count_commutative_op(int& count);

   961   void       swap_commutative_op(bool atroot, int count);

   963   void dump();

   964   void output(FILE *fp);

   965 };

   967 //------------------------------MatchRule--------------------------------------

   968 class MatchRule : public MatchNode {

   969 private:

   971 public:

   972   // Public Data

   973   const char *_machType;            // Machine type index

   974   int         _depth;               // Expression tree depth

   975   char       *_construct;           // String representing C++ constructor code

   976   int         _numchilds;           // Number of direct children

   977   MatchRule  *_next;                // Pointer to next match rule

   979   // Public Methods

   980   MatchRule(ArchDesc &ad);

   981   MatchRule(ArchDesc &ad, MatchRule* mRule); // Shallow copy constructor;

   982   MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char* construct, int numleaves);

   983   ~MatchRule();

   985   virtual void append_components(FormDict& locals, ComponentList& components, bool def_flag = false) const;

   986   // Recursive call on all operands' match rules in my match rule.

   987   bool       base_operand(uint &position, FormDict &globals,

   988                          const char * &result, const char * &name,

   989                          const char * &opType) const;

   992   bool       is_base_register(FormDict &globals) const;

   993   Form::DataType is_base_constant(FormDict &globals) const;

   994   bool       is_chain_rule(FormDict &globals) const;

   995   int        is_ideal_copy() const;

   996   int        is_expensive() const;     // node matches ideal 'CosD'

   997   bool       is_ideal_unlock() const;

   998   bool       is_ideal_call_leaf() const;

   999   bool       is_ideal_if()   const;    // node matches ideal 'If'

  1000   bool       is_ideal_fastlock() const; // node matches ideal 'FastLock'

  1001   bool       is_ideal_jump()   const;  // node matches ideal 'Jump'

  1002   bool       is_ideal_membar() const;  // node matches ideal 'MemBarXXX'

  1003   bool       is_ideal_loadPC() const;  // node matches ideal 'LoadPC'

  1004   bool       is_ideal_box() const;     // node matches ideal 'Box'

  1005   bool       is_ideal_goto() const;    // node matches ideal 'Goto'

  1006   bool       is_ideal_loopEnd() const; // node matches ideal 'LoopEnd'

  1007   bool       is_ideal_bool() const;    // node matches ideal 'Bool'

  1008   Form::DataType is_ideal_load() const;// node matches ideal 'LoadXNode'

  1009   // Should antidep checks be disabled for this rule

  1010   // See definition of MatchRule::skip_antidep_check

  1011   bool skip_antidep_check() const;

  1012   Form::DataType is_ideal_store() const;// node matches ideal 'StoreXNode'

  1014   // Check if 'mRule2' is a cisc-spill variant of this MatchRule

  1015   int        matchrule_cisc_spill_match(FormDict &globals, RegisterForm* registers,

  1016                                         MatchRule* mRule2, const char* &operand,

  1017                                         const char* &reg_type);

  1019   // Check if 'mRule2' is equivalent to this MatchRule

  1020   virtual bool equivalent(FormDict& globals, MatchNode* mRule2);

  1022   void       matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt);

  1024   void dump();

  1025   void output(FILE *fp);

  1026 };

  1028 //------------------------------Attribute--------------------------------------

  1029 class Attribute : public Form {

  1030 private:

  1032 public:

  1033   // Public Data

  1034   char *_ident;                    // Name of predefined attribute

  1035   char *_val;                      // C++ source which evaluates to constant

  1036   int   _atype;                    // Either INS_ATTR or OP_ATTR

  1037   int   int_val(ArchDesc &ad);     // Return atoi(_val), ensuring syntax.

  1039   // Public Methods

  1040   Attribute(char *id, char* val, int type);

  1041   ~Attribute();

  1043   void dump();

  1044   void output(FILE *fp);

  1045 };

  1047 //------------------------------FormatRule-------------------------------------

  1048 class FormatRule : public Form {

  1049 private:

  1051 public:

  1052   // Public Data

  1053   // There is an entry in _strings, perhaps NULL, that precedes each _rep_vars

  1054   NameList  _strings;              // Strings passed through to tty->print

  1055   NameList  _rep_vars;             // replacement variables

  1056   char     *_temp;                 // String representing the assembly code

  1058   // Public Methods

  1059   FormatRule(char *temp);

  1060   ~FormatRule();

  1062   void dump();

  1063   void output(FILE *fp);

  1064 };

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/adlc/formssel.hpp@f9094a5e1c8a

src/share/vm/adlc/formssel.hpp