1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // Definitions for Error Flags
26 #define WARN 0
27 #define SYNERR 1
28 #define SEMERR 2
29 #define INTERNAL_ERR 3
30
31 // Minimal declarations for include files
32 class OutputMap;
33 class ProductionState;
34 class Expr;
35
36 // STRUCTURE FOR HANDLING INPUT AND OUTPUT FILES
37 typedef BufferedFile ADLFILE;
38
39 //---------------------------ChainList-----------------------------------------
40 class ChainList {
41 NameList _name;
42 NameList _cost;
43 NameList _rule;
44
45 public:
46 void insert(const char *name, const char *cost, const char *rule);
47 bool search(const char *name);
48
49 void reset();
50 bool iter(const char * &name, const char * &cost, const char * &rule);
51
52 void dump();
53 void output(FILE *fp);
54
55 ChainList();
56 ~ChainList();
57 };
58
59 //---------------------------MatchList-----------------------------------------
60 class MatchList {
61 private:
62 MatchList *_next;
63 Predicate *_pred; // Predicate which applies to this match rule
64 const char *_cost;
65
66 public:
67 const char *_opcode;
68 const char *_resultStr;
69 const char *_lchild;
70 const char *_rchild;
71
72 MatchList(MatchList *nxt, Predicate *prd): _next(nxt), _pred(prd), _cost(NULL){
73 _resultStr = _lchild = _rchild = _opcode = NULL; }
74
75 MatchList(MatchList *nxt, Predicate *prd, const char *cost,
76 const char *opcode, const char *resultStr, const char *lchild,
77 const char *rchild)
78 : _next(nxt), _pred(prd), _cost(cost), _opcode(opcode),
79 _resultStr(resultStr), _lchild(lchild), _rchild(rchild) { }
80
81 MatchList *get_next(void) { return _next; }
82 char *get_pred(void) { return (_pred?_pred->_pred:NULL); }
83 Predicate *get_pred_obj(void) { return _pred; }
84 const char *get_cost(void) { return _cost == NULL ? "0" :_cost; }
85 bool search(const char *opc, const char *res, const char *lch,
86 const char *rch, Predicate *pr);
87
88 void dump();
89 void output(FILE *fp);
90 };
91
92 //---------------------------ArchDesc------------------------------------------
93 class ArchDesc {
94 private:
95 FormDict _globalNames; // Global names
96 Dict _idealIndex; // Map ideal names to index in enumeration
97 ExprDict _globalDefs; // Global definitions, #defines
98 int _internalOpCounter; // Internal Operand Counter
99
100 FormList _header; // List of Source Code Forms for hpp file
101 FormList _pre_header; // ditto for the very top of the hpp file
102 FormList _source; // List of Source Code Forms for output
103 FormList _instructions; // List of Instruction Forms for output
104 FormList _machnodes; // List of Node Classes (special for pipelining)
105 FormList _operands; // List of Operand Forms for output
106 FormList _opclass; // List of Operand Class Forms for output
107 FormList _attributes; // List of Attribute Forms for parsing
108 RegisterForm *_register; // Only one Register Form allowed
109 FrameForm *_frame; // Describe stack-frame layout
110 EncodeForm *_encode; // Only one Encode Form allowed
111 PipelineForm *_pipeline; // Pipeline Form for output
112
113 bool _has_match_rule[_last_opcode]; // found AD rule for ideal node in <arch>.ad
114
115 MatchList *_mlistab[_last_opcode]; // Array of MatchLists
116
117 // The Architecture Description identifies which user-defined operand can be used
118 // to access [stack_pointer + offset]
119 OperandForm *_cisc_spill_operand;
120
121 // Methods for outputting the DFA
122 void gen_match(FILE *fp, MatchList &mlist, ProductionState &status, Dict &operands_chained_from);
123 void chain_rule(FILE *fp, const char *indent, const char *ideal,
124 const Expr *icost, const char *irule,
125 Dict &operands_chained_from, ProductionState &status);
126 void expand_opclass(FILE *fp, const char *indent, const Expr *cost,
127 const char *result_type, ProductionState &status);
128 Expr *calc_cost(FILE *fp, const char *spaces, MatchList &mList, ProductionState &status);
129 void prune_matchlist(Dict &minimize, MatchList &mlist);
130
131 // Helper function that outputs code to generate an instruction in MachNodeGenerator
132 void buildMachNode(FILE *fp_cpp, InstructForm *inst, const char *indent);
133
134 public:
135 ArchDesc();
136 ~ArchDesc();
137
138 // Option flags which control miscellaneous behaviors throughout the code
139 int _TotalLines; // Line Counter
140 int _no_output; // Flag to disable output of DFA, etc.
141 int _quiet_mode; // Do not output banner messages, etc.
142 int _disable_warnings; // Do not output warning messages
143 int _dfa_debug; // Debug Flag for generated DFA
144 int _dfa_small; // Debug Flag for generated DFA
145 int _adl_debug; // Debug Flag for ADLC
146 int _adlocation_debug; // Debug Flag to use ad file locations
147 bool _cisc_spill_debug; // Debug Flag to see cisc-spill-instructions
148 bool _short_branch_debug; // Debug Flag to see short branch instructions
149
150 // Error/Warning Counts
151 int _syntax_errs; // Count of syntax errors
152 int _semantic_errs; // Count of semantic errors
153 int _warnings; // Count warnings
154 int _internal_errs; // Count of internal errors
155
156 // Accessor for private data.
157 void has_match_rule(int opc, const bool b) { _has_match_rule[opc] = b; }
158
159 // I/O Files
160 ADLFILE _ADL_file; // Input Architecture Description File
161 // Machine dependent files, built from architecture definition
162 ADLFILE _DFA_file; // File for definition of Matcher::DFA
163 ADLFILE _HPP_file; // File for ArchNode class declarations
164 ADLFILE _CPP_file; // File for ArchNode class defintions
165 ADLFILE _CPP_CLONE_file; // File for MachNode/Oper clone defintions
166 ADLFILE _CPP_EXPAND_file; // File for MachNode expand methods
167 ADLFILE _CPP_FORMAT_file; // File for MachNode/Oper format defintions
168 ADLFILE _CPP_GEN_file; // File for MachNode/Oper generator methods
169 ADLFILE _CPP_MISC_file; // File for miscellaneous MachNode/Oper tables & methods
170 ADLFILE _CPP_PEEPHOLE_file; // File for MachNode peephole methods
171 ADLFILE _CPP_PIPELINE_file; // File for MachNode pipeline defintions
172 ADLFILE _VM_file; // File for constants needed in VM code
173 ADLFILE _bug_file; // DFA debugging file
174
175 // I/O helper methods
176 int open_file(bool required, ADLFILE & adf, const char *action);
177 void close_file(int delete_out, ADLFILE & adf);
178 int open_files(void);
179 void close_files(int delete_out);
180
181 Dict _chainRules; // Maps user operand names to ChainRules
182 Dict _internalOps; // Maps match strings to internal operand names
183 NameList _internalOpNames; // List internal operand names
184 Dict _internalMatch; // Map internal name to its MatchNode
185
186 NameList _preproc_list; // Preprocessor flag names
187 FormDict _preproc_table;// Preprocessor flag bindings
188 char* get_preproc_def(const char* flag);
189 void set_preproc_def(const char* flag, const char* def);
190
191 FormDict& globalNames() {return _globalNames;} // map global names to forms
192 void initKeywords(FormDict& globals); // Add keywords to global name table
193
194 ExprDict& globalDefs() {return _globalDefs;} // map global names to expressions
195
196 OperandForm *constructOperand(const char *ident, bool ideal_only);
197 void initBaseOpTypes(); // Import predefined base types.
198
199 void addForm(PreHeaderForm *ptr); // Add objects to pre-header list
200 void addForm(HeaderForm *ptr); // Add objects to header list
201 void addForm(SourceForm *ptr); // Add objects to source list
202 void addForm(EncodeForm *ptr); // Add objects to encode list
203 void addForm(InstructForm *ptr); // Add objects to the instruct list
204 void addForm(OperandForm *ptr); // Add objects to the operand list
205 void addForm(OpClassForm *ptr); // Add objects to the opclasss list
206 void addForm(AttributeForm *ptr); // Add objects to the attributes list
207 void addForm(RegisterForm *ptr); // Add objects to the register list
208 void addForm(FrameForm *ptr); // Add objects to the frame list
209 void addForm(PipelineForm *ptr); // Add objects to the pipeline list
210 void addForm(MachNodeForm *ptr); // Add objects to the machnode list
211
212 int operandFormCount(); // Count number of OperandForms defined
213 int opclassFormCount(); // Count number of OpClassForms defined
214 int instructFormCount(); // Count number of InstructForms defined
215
216 inline void getForm(EncodeForm **ptr) { *ptr = _encode; }
217
218 bool verify();
219 void dump();
220
221 // Helper utility that gets MatchList components from inside MatchRule
222 void check_optype(MatchRule *mrule);
223 void build_chain_rule(OperandForm *oper);
224 void add_chain_rule_entry(const char *src, const char *cost,
225 const char *result);
226 const char *getMatchListIndex(MatchRule &mrule);
227 void generateMatchLists(); // Build MatchList array and populate it
228 void inspectOperands(); // Build MatchLists for all operands
229 void inspectOpClasses(); // Build MatchLists for all operands
230 void inspectInstructions(); // Build MatchLists for all operands
231 void buildDFA(FILE *fp); // Driver for constructing the DFA
232 void gen_dfa_state_body(FILE *fp, Dict &minmize, ProductionState &status, Dict &chained, int i); // Driver for constructing the DFA state bodies
233
234 // Helper utilities to generate reduction maps for internal operands
235 const char *reduceLeft (char *internalName);
236 const char *reduceRight(char *internalName);
237
238 // Build enumerations, (1) dense operand index, (2) operands and opcodes
239 const char *machOperEnum(const char *opName); // create dense index names using static function
240 static const char *getMachOperEnum(const char *opName);// create dense index name
241 void buildMachOperEnum(FILE *fp_hpp);// dense enumeration for operands
242 void buildMachOpcodesEnum(FILE *fp_hpp);// enumeration for MachOpers & MachNodes
243
244 // Helper utilities to generate Register Masks
245 RegisterForm *get_registers() { return _register; }
246 const char *reg_mask(OperandForm &opForm);
247 const char *reg_mask(InstructForm &instForm);
248 const char *reg_class_to_reg_mask(const char *reg_class);
249 char *stack_or_reg_mask(OperandForm &opForm); // name of cisc_spillable version
250 // This register class should also generate a stack_or_reg_mask
251 void set_stack_or_reg(const char *reg_class_name); // for cisc-spillable reg classes
252 // Generate an enumeration of register mask names and the RegMask objects.
253 void declare_register_masks(FILE *fp_cpp);
254 void build_register_masks(FILE *fp_cpp);
255 // Generate enumeration of machine register numbers
256 void buildMachRegisterNumbers(FILE *fp_hpp);
257 // Generate enumeration of machine register encodings
258 void buildMachRegisterEncodes(FILE *fp_hpp);
259 // Generate Regsiter Size Array
260 void declareRegSizes(FILE *fp_hpp);
261 // Generate Pipeline Class information
262 void declare_pipe_classes(FILE *fp_hpp);
263 // Generate Pipeline definitions
264 void build_pipeline_enums(FILE *fp_cpp);
265 // Generate Pipeline Class information
266 void build_pipe_classes(FILE *fp_cpp);
267
268 // Declare and define mappings from rules to result and input types
269 void build_map(OutputMap &map);
270 void buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp);
271 // build flags for signaling that our machine needs this instruction cloned
272 void buildMustCloneMap(FILE *fp_hpp, FILE *fp_cpp);
273
274 // output SUN copyright info
275 void addSunCopyright(char* legal, int size, FILE *fp);
276 // output #include declarations for machine specific files
277 void machineDependentIncludes(ADLFILE &adlfile);
278 // Output C preprocessor code to verify the backend compilation environment.
279 void addPreprocessorChecks(FILE *fp);
280 // Output C source and header (source_hpp) blocks.
281 void addPreHeaderBlocks(FILE *fp_hpp);
282 void addHeaderBlocks(FILE *fp_hpp);
283 void addSourceBlocks(FILE *fp_cpp);
284 void generate_adlc_verification(FILE *fp_cpp);
285
286 // output declaration of class State
287 void defineStateClass(FILE *fp);
288
289 // Generator for MachOper objects given integer type
290 void buildMachOperGenerator(FILE *fp_cpp);
291 // Generator for MachNode objects given integer type
292 void buildMachNodeGenerator(FILE *fp_cpp);
293
294 // Generator for Expand methods for instructions with expand rules
295 void defineExpand (FILE *fp, InstructForm *node);
296 // Generator for Peephole methods for instructions with peephole rules
297 void definePeephole (FILE *fp, InstructForm *node);
298 // Generator for Size methods for instructions
299 void defineSize (FILE *fp, InstructForm &node);
300
301 public:
302 // Generator for EvalConstantValue methods for instructions
303 void defineEvalConstant(FILE *fp, InstructForm &node);
304 // Generator for Emit methods for instructions
305 void defineEmit (FILE *fp, InstructForm &node);
306
307 // Define a MachOper encode method
308 void define_oper_interface(FILE *fp, OperandForm &oper, FormDict &globals,
309 const char *name, const char *encoding);
310
311 // Methods to construct the MachNode class hierarchy
312 // Return the type signature for the ideal operation
313 const char *getIdealType(const char *idealOp);
314 // Declare and define the classes derived from MachOper and MachNode
315 void declareClasses(FILE *fp_hpp);
316 void defineClasses(FILE *fp_cpp);
317
318 // Emit an ADLC message
319 void internal_err( const char *fmt, ...);
320 void syntax_err ( int lineno, const char *fmt, ...);
321 int emit_msg(int quiet, int flag, int linenum, const char *fmt,
322 va_list args);
323
324 // Generator for has_match_rule methods
325 void buildInstructMatchCheck(FILE *fp_cpp) const;
326
327 // Generator for Frame Methods
328 void buildFrameMethods(FILE *fp_cpp);
329
330 // Generate CISC_spilling oracle and MachNode::cisc_spill() methods
331 void build_cisc_spill_instructions(FILE *fp_hpp, FILE *fp_cpp);
332 void identify_cisc_spill_instructions();
333 void identify_short_branches();
334 void identify_unique_operands();
335 void set_cisc_spill_operand(OperandForm *opForm) { _cisc_spill_operand = opForm; }
336 OperandForm *cisc_spill_operand() { return _cisc_spill_operand; }
337 bool can_cisc_spill() { return _cisc_spill_operand != NULL; }
338
339
340 protected:
341 // build MatchList from MatchRule
342 void buildMatchList(MatchRule *mrule, const char *resultStr,
343 const char *rootOp, Predicate *pred, const char *cost);
344
345 void buildMList(MatchNode *node, const char *rootOp, const char *resultOp,
346 Predicate *pred, const char *cost);
347
348 friend class ADLParser;
349
350 };
351
352
353 // -------------------------------- maps ------------------------------------
354
355 // Base class for generating a mapping from rule number to value.
356 // Used with ArchDesc::build_map() for all maps except "enum MachOperands"
357 // A derived class defines the appropriate output for a specific mapping.
358 class OutputMap {
359 protected:
360 FILE *_hpp;
361 FILE *_cpp;
362 FormDict &_globals;
363 ArchDesc &_AD;
364 public:
365 OutputMap (FILE *decl_file, FILE *def_file, FormDict &globals, ArchDesc &AD)
366 : _hpp(decl_file), _cpp(def_file), _globals(globals), _AD(AD) {};
367 // Access files used by this routine
368 FILE *decl_file() { return _hpp; }
369 FILE *def_file() { return _cpp; }
370 // Positions in iteration that derived class will be told about
371 enum position { BEGIN_OPERANDS,
372 BEGIN_OPCLASSES,
373 BEGIN_INTERNALS,
374 BEGIN_INSTRUCTIONS,
375 BEGIN_INST_CHAIN_RULES,
376 END_INST_CHAIN_RULES,
377 BEGIN_REMATERIALIZE,
378 END_REMATERIALIZE,
379 END_INSTRUCTIONS
380 };
381 // Output routines specific to the derived class
382 virtual void declaration() {}
383 virtual void definition() {}
384 virtual void closing() { fprintf(_cpp, "};\n"); }
385 virtual void map(OperandForm &oper) { }
386 virtual void map(OpClassForm &opc) { }
387 virtual void map(char *internal_name) { }
388 // Allow enum-MachOperands to turn-off instructions
389 virtual bool do_instructions() { return true; }
390 virtual void map(InstructForm &inst) { }
391 // Allow derived class to output name and position specific info
392 virtual void record_position(OutputMap::position place, int index) {}
393 };