jdk8-mips64-public/hotspot: src/share/vm/adlc/adlparse.hpp@4d9884b01ba6 (annotated)

src/share/vm/adlc/adlparse.hpp@4d9884b01ba6 (annotated)

src/share/vm/adlc/adlparse.hpp

Tue, 28 Oct 2008 09:31:30 -0700

author: never
date: Tue, 28 Oct 2008 09:31:30 -0700
changeset 850: 4d9884b01ba6
parent 435: a61af66fc99e
child 905: ad8c8ca4ab0f
child 910: 284d0af00d53
permissions: -rw-r--r--

6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
Reviewed-by: kvn, rasbold

 /*
  * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 // ADLPARSE.HPP - Definitions for Architecture Description Language Parser
 // Authors: Chris Vick and Mike Paleczny
 // Class List
 class Form;
 // ***** Top Level, 1, classes  *****
 class InstructForm;
 class OperandForm;
 class OpClassForm;
 class AttributeForm;
 class RegisterForm;
 class PipelineForm;
 class SourceForm;
 class Peephole;
 // ***** Level 2 classes *****
 class Component;
 class Predicate;
 class MatchRule;
 class Encode;
 class Attribute;
 class Effect;
 class ExpandRule;
 class RewriteRule;
 class Constraint;
 class ConstructRule;
 // ***** Register Section *****
 class RegDef;
 class RegClass;
 class AllocClass;
 class ResourceForm;
 // ***** Pipeline Section *****
 class PipeDesc;
 class PipeClass;
 class RegList;
 // ***** Peephole Section *****
 class PeepMatch;
 class PeepConstraint;
 class PeepReplace;
 // class ostream; // ostream is a typedef in some systems
 extern char *toUpper(const char *str);
 //---------------------------ADLParser-----------------------------------------
 class ADLParser {
 protected:
   char     *_curline;           // Start of current line
   char     *_ptr;               // Pointer into current location in File Buffer
   char      _curchar;           // Current character from buffer
   FormDict &_globalNames;       // Global names
   enum { _preproc_limit = 20 };
   int       _preproc_depth;                 // How deep are we into ifdefs?
   int       _preproc_not_taken;             // How deep in not-taken ifdefs?
   bool      _preproc_taken[_preproc_limit]; // Are we taking this ifdef level?
   bool      _preproc_else[_preproc_limit];  // Did this level have an else yet?
   // ***** Level 1 Parse functions *****
   void instr_parse(void);       // Parse instruction definitions
   void oper_parse(void);        // Parse operand definitions
   void opclass_parse(void);     // Parse operand class definitions
   void ins_attr_parse(void);    // Parse instruction attrubute definitions
   void op_attr_parse(void);     // Parse operand attrubute definitions
   void source_parse(void);      // Parse source section
   void source_hpp_parse(void);  // Parse source_hpp section
   void reg_parse(void);         // Parse register section
   void encode_parse(void);      // Parse encoding section
   void frame_parse(void);       // Parse frame section
   void pipe_parse(void);        // Parse pipeline section
   void definitions_parse(void); // Parse definitions section
   void peep_parse(void);        // Parse peephole rule definitions
   void preproc_define(void);    // Parse a #define statement
   void preproc_undef(void);     // Parse an #undef statement
   // Helper functions for instr_parse().
   void adjust_set_rule(InstructForm *instr);
   void matchrule_clone_and_swap(MatchRule *rule, const char* instr_ident, int& match_rules_cnt);
   // ***** Level 2 Parse functions *****
   // Parse the components of the encode section
   void enc_class_parse(void);   // Parse encoding class definition
   void enc_class_parse_block(EncClass* encoding, char* ec_name);
   // Parse the components of the frame section
   void stack_dir_parse(FrameForm *frame);   // Parse the stack direction entry
   void sync_stack_slots_parse(FrameForm *frame);
   void frame_pointer_parse(FrameForm *frame, bool native);
   void interpreter_frame_pointer_parse(FrameForm *frame, bool native);
   void inline_cache_parse(FrameForm *frame, bool native);
   void interpreter_arg_ptr_parse(FrameForm *frame, bool native);
   void interpreter_method_oop_parse(FrameForm *frame, bool native);
   void cisc_spilling_operand_name_parse(FrameForm *frame, bool native);
   void stack_alignment_parse(FrameForm *frame);
   void return_addr_parse(FrameForm *frame, bool native);
   void preserve_stack_parse(FrameForm *frame);
   char *calling_convention_parse();
   char *return_value_parse();
   // Parse components of the register section
   void reg_def_parse(void);              // Parse register definition
   void reg_class_parse(void);            // Parse register class definition
   void alloc_class_parse(void);          // Parse allocation class definition
   // Parse components of the definition section
   void int_def_parse(void);              // Parse an integer definition
   // Parse components of a pipeline rule
   void resource_parse(PipelineForm &pipe);   // Parse resource definition
   void pipe_desc_parse(PipelineForm &pipe);  // Parse pipeline description definition
   void pipe_class_parse(PipelineForm &pipe); // Parse pipeline class definition
   // Parse components of a peephole rule
   void peep_match_parse(Peephole &peep);     // Parse the peephole match rule
   void peep_constraint_parse(Peephole &peep);// Parse the peephole constraints
   void peep_replace_parse(Peephole &peep);   // Parse peephole replacement rule
   // Parse the peep match rule tree
   InstructForm *peep_match_child_parse(PeepMatch &match, int parent, int &position, int input);
   // Parse components of an operand and/or instruction form
   Predicate     *pred_parse(void);       // Parse predicate rule
   // Parse match rule, and internal nodes
   MatchRule     *match_parse(FormDict &operands);
   MatchNode     *matchNode_parse(FormDict &operands, int &depth,
                                  int &numleaves, bool atroot);
   MatchNode     *matchChild_parse(FormDict &operands, int &depth,
                                   int &numleaves, bool atroot);
   Attribute     *attr_parse(char *ident);// Parse instr/operand attribute rule
   // Parse instruction encode rule
   InsEncode     *ins_encode_parse(InstructForm &inst);
   InsEncode     *ins_encode_parse_block(InstructForm &inst);
   Opcode        *opcode_parse(InstructForm *insr); // Parse instruction opcode
   char          *size_parse(InstructForm *insr); // Parse instruction size
   Interface     *interface_parse();      // Parse operand interface rule
   Interface     *mem_interface_parse();  // Parse memory interface rule
   Interface     *cond_interface_parse(); // Parse conditional interface rule
   char          *interface_field_parse(const char** format = NULL);// Parse field contents
   FormatRule    *format_parse(void);     // Parse format rule
   FormatRule    *template_parse(void);     // Parse format rule
   void           effect_parse(InstructForm *instr); // Parse effect rule
   ExpandRule    *expand_parse(InstructForm *instr); // Parse expand rule
   RewriteRule   *rewrite_parse(void);    // Parse rewrite rule
   Constraint    *constraint_parse(void); // Parse constraint rule
   ConstructRule *construct_parse(void);  // Parse construct rule
   void           ins_pipe_parse(InstructForm &instr); // Parse ins_pipe rule
   // ***** Preprocessor functions *****
   void begin_if_def(bool taken) {
     assert(_preproc_depth < _preproc_limit, "#ifdef nesting limit");
     int ppn = _preproc_depth++;
     _preproc_taken[ppn] = taken;
     // Invariant:  _preproc_not_taken = SUM !_preproc_taken[0.._preproc_depth)
     if (!_preproc_taken[ppn])  _preproc_not_taken += 1;
     _preproc_else[ppn] = false;
   }
   void invert_if_def() {
     assert(_preproc_depth > 0, "#ifdef matching");
     int ppn = _preproc_depth - 1;
     assert(!_preproc_else[ppn], "multiple #else lines");
     _preproc_else[ppn] = true;
     if (!_preproc_taken[ppn])  _preproc_not_taken -= 1;
     _preproc_taken[ppn] = !_preproc_taken[ppn];
     if (!_preproc_taken[ppn])  _preproc_not_taken += 1;
   }
   void end_if_def() {
     assert(_preproc_depth > 0, "#ifdef matching");
     int ppn = --_preproc_depth;
     if (!_preproc_taken[ppn])  _preproc_not_taken -= 1;
   }
   bool preproc_taken() {
     // Return true only if there is no directive hiding this text position.
     return _preproc_not_taken == 0;
   }
   // Handle a '#' token.  Return true if it disappeared.
   bool handle_preproc_token();
   // ***** Utility Functions for ADL Parser ******
   // Parse one string argument inside parens:  '(' string ')' ';'
   char *parse_one_arg(const char *description);
   // Return the next identifier given a pointer into a line of the buffer.
   char *get_ident()            { return get_ident_common(true); }
   char *get_ident_no_preproc() { return get_ident_common(false); }
   char *get_ident_common(bool do_preproc);      // Grab it from the file buffer
   char *get_ident_dup(void);    // Grab a duplicate of the identifier
   char *get_ident_or_literal_constant(const char* description);
   // Grab unique identifier from file buffer
   char *get_unique_ident(FormDict &dict, const char *nameDescription);
   // Return the next replacement variable identifier
   char *get_rep_var_ident(void);
   // Skip first '$' and make a duplicate of the string
   char *get_rep_var_ident_dup(void);
   // Return the next token given as a signed integer.
   int   get_int(void);
   // Return the next token, a relational operator { ==, !=, <=, >= }
   char *get_relation_dup(void);
   void  get_oplist(NameList &parameters, FormDict &operands);// Parse type-operand pairs
   void  get_effectlist(FormDict &effects, FormDict &operands); // Parse effect-operand pairs
   // Return the contents of a parenthesized expression.
   // Requires initial '(' and consumes final ')', which is replaced by '\0'.
   char *get_paren_expr(const char *description);
   // Return expression up to next stop-char, which terminator replaces.
   // Does not require initial '('.  Does not consume final stop-char.
   // Final stop-char is left in _curchar, but is also is replaced by '\0'.
   char *get_expr(const char *description, const char *stop_chars);
   char *find_cpp_block(const char *description); // Parse a C++ code block
   // Issue parser error message & go to EOL
   void parse_err(int flag, const char *fmt, ...);
   // Return pointer to current character
   inline char  cur_char(void);
   // Advance to next character, assign this to _curchar
   inline void  next_char(void);
   inline void  next_char_or_line(void);
   // Advance File Buffer to next line, updating _curline
   inline void  next_line(void);
   // Issue an error if we are not at the beginning of a line (exc. whitespace).
   void ensure_start_of_line(void);
   // Issue an error if we are not at the end of a line (exc. whitespace).
   void ensure_end_of_line(void);
   // Skip whitespace, leaving ptr pointing to first non-whitespace character
   // Also handle preprocessor constructs like "#ifdef".
   void skipws()                { skipws_common(true); }
   // Skip comments and spaces but not newlines or preprocessor constructs.
   void skipws_no_preproc()     { skipws_common(false); }
   void skipws_common(bool do_preproc);
   FileBuff &_buf;               // File buffer to be parsed
   ArchDesc &_AD;                // Architecture Description being built
 public:
   ADLParser(FileBuff &buf, ArchDesc &archDesc); // Create new ADLParser object
   ~ADLParser();                 // Destroy ADLParser object
   void parse(void);             // Do the parsing & build forms lists
   int linenum() { return _buf.linenum(); }
   static bool is_literal_constant(const char *hex_string);
   static bool is_hex_digit(char digit);
   static bool is_int_token(const char* token, int& intval);
   static void trim(char* &token);  // trim leading & trailing spaces
 };

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/adlc/adlparse.hpp@4d9884b01ba6 (annotated)

src/share/vm/adlc/adlparse.hpp