1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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8  *
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10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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24 
25 // output_c.cpp - Class CPP file output routines for architecture definition
26 
27 #include "adlc.hpp"
28 
29 // Utilities to characterize effect statements
is_def(int usedef)30 static bool is_def(int usedef) {
31   switch(usedef) {
32   case Component::DEF:
33   case Component::USE_DEF: return true; break;
34   }
35   return false;
36 }
37 
38 // Define  an array containing the machine register names, strings.
defineRegNames(FILE * fp,RegisterForm * registers)39 static void defineRegNames(FILE *fp, RegisterForm *registers) {
40   if (registers) {
41     fprintf(fp,"\n");
42     fprintf(fp,"// An array of character pointers to machine register names.\n");
43     fprintf(fp,"const char *Matcher::regName[REG_COUNT] = {\n");
44 
45     // Output the register name for each register in the allocation classes
46     RegDef *reg_def = NULL;
47     RegDef *next = NULL;
48     registers->reset_RegDefs();
49     for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
50       next = registers->iter_RegDefs();
51       const char *comma = (next != NULL) ? "," : " // no trailing comma";
52       fprintf(fp,"  \"%s\"%s\n", reg_def->_regname, comma);
53     }
54 
55     // Finish defining enumeration
56     fprintf(fp,"};\n");
57 
58     fprintf(fp,"\n");
59     fprintf(fp,"// An array of character pointers to machine register names.\n");
60     fprintf(fp,"const VMReg OptoReg::opto2vm[REG_COUNT] = {\n");
61     reg_def = NULL;
62     next = NULL;
63     registers->reset_RegDefs();
64     for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
65       next = registers->iter_RegDefs();
66       const char *comma = (next != NULL) ? "," : " // no trailing comma";
67       fprintf(fp,"\t%s%s\n", reg_def->_concrete, comma);
68     }
69     // Finish defining array
70     fprintf(fp,"\t};\n");
71     fprintf(fp,"\n");
72 
73     fprintf(fp," OptoReg::Name OptoReg::vm2opto[ConcreteRegisterImpl::number_of_registers];\n");
74 
75   }
76 }
77 
78 // Define an array containing the machine register encoding values
defineRegEncodes(FILE * fp,RegisterForm * registers)79 static void defineRegEncodes(FILE *fp, RegisterForm *registers) {
80   if (registers) {
81     fprintf(fp,"\n");
82     fprintf(fp,"// An array of the machine register encode values\n");
83     fprintf(fp,"const unsigned char Matcher::_regEncode[REG_COUNT] = {\n");
84 
85     // Output the register encoding for each register in the allocation classes
86     RegDef *reg_def = NULL;
87     RegDef *next    = NULL;
88     registers->reset_RegDefs();
89     for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
90       next = registers->iter_RegDefs();
91       const char* register_encode = reg_def->register_encode();
92       const char *comma = (next != NULL) ? "," : " // no trailing comma";
93       int encval;
94       if (!ADLParser::is_int_token(register_encode, encval)) {
95         fprintf(fp,"  %s%s  // %s\n", register_encode, comma, reg_def->_regname);
96       } else {
97         // Output known constants in hex char format (backward compatibility).
98         assert(encval < 256, "Exceeded supported width for register encoding");
99         fprintf(fp,"  (unsigned char)'\\x%X'%s  // %s\n", encval, comma, reg_def->_regname);
100       }
101     }
102     // Finish defining enumeration
103     fprintf(fp,"};\n");
104 
105   } // Done defining array
106 }
107 
108 // Output an enumeration of register class names
defineRegClassEnum(FILE * fp,RegisterForm * registers)109 static void defineRegClassEnum(FILE *fp, RegisterForm *registers) {
110   if (registers) {
111     // Output an enumeration of register class names
112     fprintf(fp,"\n");
113     fprintf(fp,"// Enumeration of register class names\n");
114     fprintf(fp, "enum machRegisterClass {\n");
115     registers->_rclasses.reset();
116     for (const char *class_name = NULL; (class_name = registers->_rclasses.iter()) != NULL;) {
117       const char * class_name_to_upper = toUpper(class_name);
118       fprintf(fp,"  %s,\n", class_name_to_upper);
119       delete[] class_name_to_upper;
120     }
121     // Finish defining enumeration
122     fprintf(fp, "  _last_Mach_Reg_Class\n");
123     fprintf(fp, "};\n");
124   }
125 }
126 
127 // Declare an enumeration of user-defined register classes
128 // and a list of register masks, one for each class.
declare_register_masks(FILE * fp_hpp)129 void ArchDesc::declare_register_masks(FILE *fp_hpp) {
130   const char  *rc_name;
131 
132   if (_register) {
133     // Build enumeration of user-defined register classes.
134     defineRegClassEnum(fp_hpp, _register);
135 
136     // Generate a list of register masks, one for each class.
137     fprintf(fp_hpp,"\n");
138     fprintf(fp_hpp,"// Register masks, one for each register class.\n");
139     _register->_rclasses.reset();
140     for (rc_name = NULL; (rc_name = _register->_rclasses.iter()) != NULL;) {
141       RegClass *reg_class = _register->getRegClass(rc_name);
142       assert(reg_class, "Using an undefined register class");
143       reg_class->declare_register_masks(fp_hpp);
144     }
145   }
146 }
147 
148 // Generate an enumeration of user-defined register classes
149 // and a list of register masks, one for each class.
build_register_masks(FILE * fp_cpp)150 void ArchDesc::build_register_masks(FILE *fp_cpp) {
151   const char  *rc_name;
152 
153   if (_register) {
154     // Generate a list of register masks, one for each class.
155     fprintf(fp_cpp,"\n");
156     fprintf(fp_cpp,"// Register masks, one for each register class.\n");
157     _register->_rclasses.reset();
158     for (rc_name = NULL; (rc_name = _register->_rclasses.iter()) != NULL;) {
159       RegClass *reg_class = _register->getRegClass(rc_name);
160       assert(reg_class, "Using an undefined register class");
161       reg_class->build_register_masks(fp_cpp);
162     }
163   }
164 }
165 
166 // Compute an index for an array in the pipeline_reads_NNN arrays
pipeline_reads_initializer(FILE * fp_cpp,NameList & pipeline_reads,PipeClassForm * pipeclass)167 static int pipeline_reads_initializer(FILE *fp_cpp, NameList &pipeline_reads, PipeClassForm *pipeclass)
168 {
169   int templen = 1;
170   int paramcount = 0;
171   const char *paramname;
172 
173   if (pipeclass->_parameters.count() == 0)
174     return -1;
175 
176   pipeclass->_parameters.reset();
177   paramname = pipeclass->_parameters.iter();
178   const PipeClassOperandForm *pipeopnd =
179     (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
180   if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
181     pipeclass->_parameters.reset();
182 
183   while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
184     const PipeClassOperandForm *tmppipeopnd =
185         (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
186 
187     if (tmppipeopnd)
188       templen += 10 + (int)strlen(tmppipeopnd->_stage);
189     else
190       templen += 19;
191 
192     paramcount++;
193   }
194 
195   // See if the count is zero
196   if (paramcount == 0) {
197     return -1;
198   }
199 
200   char *operand_stages = new char [templen];
201   operand_stages[0] = 0;
202   int i = 0;
203   templen = 0;
204 
205   pipeclass->_parameters.reset();
206   paramname = pipeclass->_parameters.iter();
207   pipeopnd = (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
208   if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
209     pipeclass->_parameters.reset();
210 
211   while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
212     const PipeClassOperandForm *tmppipeopnd =
213         (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
214     templen += sprintf(&operand_stages[templen], "  stage_%s%c\n",
215       tmppipeopnd ? tmppipeopnd->_stage : "undefined",
216       (++i < paramcount ? ',' : ' ') );
217   }
218 
219   // See if the same string is in the table
220   int ndx = pipeline_reads.index(operand_stages);
221 
222   // No, add it to the table
223   if (ndx < 0) {
224     pipeline_reads.addName(operand_stages);
225     ndx = pipeline_reads.index(operand_stages);
226 
227     fprintf(fp_cpp, "static const enum machPipelineStages pipeline_reads_%03d[%d] = {\n%s};\n\n",
228       ndx+1, paramcount, operand_stages);
229   }
230   else
231     delete [] operand_stages;
232 
233   return (ndx);
234 }
235 
236 // Compute an index for an array in the pipeline_res_stages_NNN arrays
pipeline_res_stages_initializer(FILE * fp_cpp,PipelineForm * pipeline,NameList & pipeline_res_stages,PipeClassForm * pipeclass)237 static int pipeline_res_stages_initializer(
238   FILE *fp_cpp,
239   PipelineForm *pipeline,
240   NameList &pipeline_res_stages,
241   PipeClassForm *pipeclass)
242 {
243   const PipeClassResourceForm *piperesource;
244   int * res_stages = new int [pipeline->_rescount];
245   int i;
246 
247   for (i = 0; i < pipeline->_rescount; i++)
248      res_stages[i] = 0;
249 
250   for (pipeclass->_resUsage.reset();
251        (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
252     int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
253     for (i = 0; i < pipeline->_rescount; i++)
254       if ((1 << i) & used_mask) {
255         int stage = pipeline->_stages.index(piperesource->_stage);
256         if (res_stages[i] < stage+1)
257           res_stages[i] = stage+1;
258       }
259   }
260 
261   // Compute the length needed for the resource list
262   int commentlen = 0;
263   int max_stage = 0;
264   for (i = 0; i < pipeline->_rescount; i++) {
265     if (res_stages[i] == 0) {
266       if (max_stage < 9)
267         max_stage = 9;
268     }
269     else {
270       int stagelen = (int)strlen(pipeline->_stages.name(res_stages[i]-1));
271       if (max_stage < stagelen)
272         max_stage = stagelen;
273     }
274 
275     commentlen += (int)strlen(pipeline->_reslist.name(i));
276   }
277 
278   int templen = 1 + commentlen + pipeline->_rescount * (max_stage + 14);
279 
280   // Allocate space for the resource list
281   char * resource_stages = new char [templen];
282 
283   templen = 0;
284   for (i = 0; i < pipeline->_rescount; i++) {
285     const char * const resname =
286       res_stages[i] == 0 ? "undefined" : pipeline->_stages.name(res_stages[i]-1);
287 
288     templen += sprintf(&resource_stages[templen], "  stage_%s%-*s // %s\n",
289       resname, max_stage - (int)strlen(resname) + 1,
290       (i < pipeline->_rescount-1) ? "," : "",
291       pipeline->_reslist.name(i));
292   }
293 
294   // See if the same string is in the table
295   int ndx = pipeline_res_stages.index(resource_stages);
296 
297   // No, add it to the table
298   if (ndx < 0) {
299     pipeline_res_stages.addName(resource_stages);
300     ndx = pipeline_res_stages.index(resource_stages);
301 
302     fprintf(fp_cpp, "static const enum machPipelineStages pipeline_res_stages_%03d[%d] = {\n%s};\n\n",
303       ndx+1, pipeline->_rescount, resource_stages);
304   }
305   else
306     delete [] resource_stages;
307 
308   delete [] res_stages;
309 
310   return (ndx);
311 }
312 
313 // Compute an index for an array in the pipeline_res_cycles_NNN arrays
pipeline_res_cycles_initializer(FILE * fp_cpp,PipelineForm * pipeline,NameList & pipeline_res_cycles,PipeClassForm * pipeclass)314 static int pipeline_res_cycles_initializer(
315   FILE *fp_cpp,
316   PipelineForm *pipeline,
317   NameList &pipeline_res_cycles,
318   PipeClassForm *pipeclass)
319 {
320   const PipeClassResourceForm *piperesource;
321   int * res_cycles = new int [pipeline->_rescount];
322   int i;
323 
324   for (i = 0; i < pipeline->_rescount; i++)
325      res_cycles[i] = 0;
326 
327   for (pipeclass->_resUsage.reset();
328        (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
329     int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
330     for (i = 0; i < pipeline->_rescount; i++)
331       if ((1 << i) & used_mask) {
332         int cycles = piperesource->_cycles;
333         if (res_cycles[i] < cycles)
334           res_cycles[i] = cycles;
335       }
336   }
337 
338   // Pre-compute the string length
339   int templen;
340   int cyclelen = 0, commentlen = 0;
341   int max_cycles = 0;
342   char temp[32];
343 
344   for (i = 0; i < pipeline->_rescount; i++) {
345     if (max_cycles < res_cycles[i])
346       max_cycles = res_cycles[i];
347     templen = sprintf(temp, "%d", res_cycles[i]);
348     if (cyclelen < templen)
349       cyclelen = templen;
350     commentlen += (int)strlen(pipeline->_reslist.name(i));
351   }
352 
353   templen = 1 + commentlen + (cyclelen + 8) * pipeline->_rescount;
354 
355   // Allocate space for the resource list
356   char * resource_cycles = new char [templen];
357 
358   templen = 0;
359 
360   for (i = 0; i < pipeline->_rescount; i++) {
361     templen += sprintf(&resource_cycles[templen], "  %*d%c // %s\n",
362       cyclelen, res_cycles[i], (i < pipeline->_rescount-1) ? ',' : ' ', pipeline->_reslist.name(i));
363   }
364 
365   // See if the same string is in the table
366   int ndx = pipeline_res_cycles.index(resource_cycles);
367 
368   // No, add it to the table
369   if (ndx < 0) {
370     pipeline_res_cycles.addName(resource_cycles);
371     ndx = pipeline_res_cycles.index(resource_cycles);
372 
373     fprintf(fp_cpp, "static const uint pipeline_res_cycles_%03d[%d] = {\n%s};\n\n",
374       ndx+1, pipeline->_rescount, resource_cycles);
375   }
376   else
377     delete [] resource_cycles;
378 
379   delete [] res_cycles;
380 
381   return (ndx);
382 }
383 
384 //typedef unsigned long long uint64_t;
385 
386 // Compute an index for an array in the pipeline_res_mask_NNN arrays
pipeline_res_mask_initializer(FILE * fp_cpp,PipelineForm * pipeline,NameList & pipeline_res_mask,NameList & pipeline_res_args,PipeClassForm * pipeclass)387 static int pipeline_res_mask_initializer(
388   FILE *fp_cpp,
389   PipelineForm *pipeline,
390   NameList &pipeline_res_mask,
391   NameList &pipeline_res_args,
392   PipeClassForm *pipeclass)
393 {
394   const PipeClassResourceForm *piperesource;
395   const uint rescount      = pipeline->_rescount;
396   const uint maxcycleused  = pipeline->_maxcycleused;
397   const uint cyclemasksize = (maxcycleused + 31) >> 5;
398 
399   int i, j;
400   int element_count = 0;
401   uint *res_mask = new uint [cyclemasksize];
402   uint resources_used             = 0;
403   uint resources_used_exclusively = 0;
404 
405   for (pipeclass->_resUsage.reset();
406        (piperesource = (const PipeClassResourceForm*)pipeclass->_resUsage.iter()) != NULL; ) {
407     element_count++;
408   }
409 
410   // Pre-compute the string length
411   int templen;
412   int commentlen = 0;
413   int max_cycles = 0;
414 
415   int cyclelen = ((maxcycleused + 3) >> 2);
416   int masklen = (rescount + 3) >> 2;
417 
418   int cycledigit = 0;
419   for (i = maxcycleused; i > 0; i /= 10)
420     cycledigit++;
421 
422   int maskdigit = 0;
423   for (i = rescount; i > 0; i /= 10)
424     maskdigit++;
425 
426   static const char* pipeline_use_cycle_mask = "Pipeline_Use_Cycle_Mask";
427   static const char* pipeline_use_element    = "Pipeline_Use_Element";
428 
429   templen = 1 +
430     (int)(strlen(pipeline_use_cycle_mask) + (int)strlen(pipeline_use_element) +
431      (cyclemasksize * 12) + masklen + (cycledigit * 2) + 30) * element_count;
432 
433   // Allocate space for the resource list
434   char * resource_mask = new char [templen];
435   char * last_comma = NULL;
436 
437   templen = 0;
438 
439   for (pipeclass->_resUsage.reset();
440        (piperesource = (const PipeClassResourceForm*)pipeclass->_resUsage.iter()) != NULL; ) {
441     int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
442 
443     if (!used_mask) {
444       fprintf(stderr, "*** used_mask is 0 ***\n");
445     }
446 
447     resources_used |= used_mask;
448 
449     uint lb, ub;
450 
451     for (lb =  0; (used_mask & (1 << lb)) == 0; lb++);
452     for (ub = 31; (used_mask & (1 << ub)) == 0; ub--);
453 
454     if (lb == ub) {
455       resources_used_exclusively |= used_mask;
456     }
457 
458     int formatlen =
459       sprintf(&resource_mask[templen], "  %s(0x%0*x, %*d, %*d, %s %s(",
460         pipeline_use_element,
461         masklen, used_mask,
462         cycledigit, lb, cycledigit, ub,
463         ((used_mask & (used_mask-1)) != 0) ? "true, " : "false,",
464         pipeline_use_cycle_mask);
465 
466     templen += formatlen;
467 
468     memset(res_mask, 0, cyclemasksize * sizeof(uint));
469 
470     int cycles = piperesource->_cycles;
471     uint stage          = pipeline->_stages.index(piperesource->_stage);
472     if ((uint)NameList::Not_in_list == stage) {
473       fprintf(stderr,
474               "pipeline_res_mask_initializer: "
475               "semantic error: "
476               "pipeline stage undeclared: %s\n",
477               piperesource->_stage);
478       exit(1);
479     }
480     uint upper_limit    = stage + cycles - 1;
481     uint lower_limit    = stage - 1;
482     uint upper_idx      = upper_limit >> 5;
483     uint lower_idx      = lower_limit >> 5;
484     uint upper_position = upper_limit & 0x1f;
485     uint lower_position = lower_limit & 0x1f;
486 
487     uint mask = (((uint)1) << upper_position) - 1;
488 
489     while (upper_idx > lower_idx) {
490       res_mask[upper_idx--] |= mask;
491       mask = (uint)-1;
492     }
493 
494     mask -= (((uint)1) << lower_position) - 1;
495     res_mask[upper_idx] |= mask;
496 
497     for (j = cyclemasksize-1; j >= 0; j--) {
498       formatlen =
499         sprintf(&resource_mask[templen], "0x%08x%s", res_mask[j], j > 0 ? ", " : "");
500       templen += formatlen;
501     }
502 
503     resource_mask[templen++] = ')';
504     resource_mask[templen++] = ')';
505     last_comma = &resource_mask[templen];
506     resource_mask[templen++] = ',';
507     resource_mask[templen++] = '\n';
508   }
509 
510   resource_mask[templen] = 0;
511   if (last_comma) {
512     last_comma[0] = ' ';
513   }
514 
515   // See if the same string is in the table
516   int ndx = pipeline_res_mask.index(resource_mask);
517 
518   // No, add it to the table
519   if (ndx < 0) {
520     pipeline_res_mask.addName(resource_mask);
521     ndx = pipeline_res_mask.index(resource_mask);
522 
523     if (strlen(resource_mask) > 0)
524       fprintf(fp_cpp, "static const Pipeline_Use_Element pipeline_res_mask_%03d[%d] = {\n%s};\n\n",
525         ndx+1, element_count, resource_mask);
526 
527     char* args = new char [9 + 2*masklen + maskdigit];
528 
529     sprintf(args, "0x%0*x, 0x%0*x, %*d",
530       masklen, resources_used,
531       masklen, resources_used_exclusively,
532       maskdigit, element_count);
533 
534     pipeline_res_args.addName(args);
535   }
536   else {
537     delete [] resource_mask;
538   }
539 
540   delete [] res_mask;
541 //delete [] res_masks;
542 
543   return (ndx);
544 }
545 
build_pipe_classes(FILE * fp_cpp)546 void ArchDesc::build_pipe_classes(FILE *fp_cpp) {
547   const char *classname;
548   const char *resourcename;
549   int resourcenamelen = 0;
550   NameList pipeline_reads;
551   NameList pipeline_res_stages;
552   NameList pipeline_res_cycles;
553   NameList pipeline_res_masks;
554   NameList pipeline_res_args;
555   const int default_latency = 1;
556   const int non_operand_latency = 0;
557   const int node_latency = 0;
558 
559   if (!_pipeline) {
560     fprintf(fp_cpp, "uint Node::latency(uint i) const {\n");
561     fprintf(fp_cpp, "  // assert(false, \"pipeline functionality is not defined\");\n");
562     fprintf(fp_cpp, "  return %d;\n", non_operand_latency);
563     fprintf(fp_cpp, "}\n");
564     return;
565   }
566 
567   fprintf(fp_cpp, "\n");
568   fprintf(fp_cpp, "//------------------Pipeline Methods-----------------------------------------\n");
569   fprintf(fp_cpp, "#ifndef PRODUCT\n");
570   fprintf(fp_cpp, "const char * Pipeline::stageName(uint s) {\n");
571   fprintf(fp_cpp, "  static const char * const _stage_names[] = {\n");
572   fprintf(fp_cpp, "    \"undefined\"");
573 
574   for (int s = 0; s < _pipeline->_stagecnt; s++)
575     fprintf(fp_cpp, ", \"%s\"", _pipeline->_stages.name(s));
576 
577   fprintf(fp_cpp, "\n  };\n\n");
578   fprintf(fp_cpp, "  return (s <= %d ? _stage_names[s] : \"???\");\n",
579     _pipeline->_stagecnt);
580   fprintf(fp_cpp, "}\n");
581   fprintf(fp_cpp, "#endif\n\n");
582 
583   fprintf(fp_cpp, "uint Pipeline::functional_unit_latency(uint start, const Pipeline *pred) const {\n");
584   fprintf(fp_cpp, "  // See if the functional units overlap\n");
585 #if 0
586   fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
587   fprintf(fp_cpp, "  if (TraceOptoOutput) {\n");
588   fprintf(fp_cpp, "    tty->print(\"#   functional_unit_latency: start == %%d, this->exclusively == 0x%%03x, pred->exclusively == 0x%%03x\\n\", start, resourcesUsedExclusively(), pred->resourcesUsedExclusively());\n");
589   fprintf(fp_cpp, "  }\n");
590   fprintf(fp_cpp, "#endif\n\n");
591 #endif
592   fprintf(fp_cpp, "  uint mask = resourcesUsedExclusively() & pred->resourcesUsedExclusively();\n");
593   fprintf(fp_cpp, "  if (mask == 0)\n    return (start);\n\n");
594 #if 0
595   fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
596   fprintf(fp_cpp, "  if (TraceOptoOutput) {\n");
597   fprintf(fp_cpp, "    tty->print(\"#   functional_unit_latency: mask == 0x%%x\\n\", mask);\n");
598   fprintf(fp_cpp, "  }\n");
599   fprintf(fp_cpp, "#endif\n\n");
600 #endif
601   fprintf(fp_cpp, "  for (uint i = 0; i < pred->resourceUseCount(); i++) {\n");
602   fprintf(fp_cpp, "    const Pipeline_Use_Element *predUse = pred->resourceUseElement(i);\n");
603   fprintf(fp_cpp, "    if (predUse->multiple())\n");
604   fprintf(fp_cpp, "      continue;\n\n");
605   fprintf(fp_cpp, "    for (uint j = 0; j < resourceUseCount(); j++) {\n");
606   fprintf(fp_cpp, "      const Pipeline_Use_Element *currUse = resourceUseElement(j);\n");
607   fprintf(fp_cpp, "      if (currUse->multiple())\n");
608   fprintf(fp_cpp, "        continue;\n\n");
609   fprintf(fp_cpp, "      if (predUse->used() & currUse->used()) {\n");
610   fprintf(fp_cpp, "        Pipeline_Use_Cycle_Mask x = predUse->mask();\n");
611   fprintf(fp_cpp, "        Pipeline_Use_Cycle_Mask y = currUse->mask();\n\n");
612   fprintf(fp_cpp, "        for ( y <<= start; x.overlaps(y); start++ )\n");
613   fprintf(fp_cpp, "          y <<= 1;\n");
614   fprintf(fp_cpp, "      }\n");
615   fprintf(fp_cpp, "    }\n");
616   fprintf(fp_cpp, "  }\n\n");
617   fprintf(fp_cpp, "  // There is the potential for overlap\n");
618   fprintf(fp_cpp, "  return (start);\n");
619   fprintf(fp_cpp, "}\n\n");
620   fprintf(fp_cpp, "// The following two routines assume that the root Pipeline_Use entity\n");
621   fprintf(fp_cpp, "// consists of exactly 1 element for each functional unit\n");
622   fprintf(fp_cpp, "// start is relative to the current cycle; used for latency-based info\n");
623   fprintf(fp_cpp, "uint Pipeline_Use::full_latency(uint delay, const Pipeline_Use &pred) const {\n");
624   fprintf(fp_cpp, "  for (uint i = 0; i < pred._count; i++) {\n");
625   fprintf(fp_cpp, "    const Pipeline_Use_Element *predUse = pred.element(i);\n");
626   fprintf(fp_cpp, "    if (predUse->_multiple) {\n");
627   fprintf(fp_cpp, "      uint min_delay = %d;\n",
628     _pipeline->_maxcycleused+1);
629   fprintf(fp_cpp, "      // Multiple possible functional units, choose first unused one\n");
630   fprintf(fp_cpp, "      for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
631   fprintf(fp_cpp, "        const Pipeline_Use_Element *currUse = element(j);\n");
632   fprintf(fp_cpp, "        uint curr_delay = delay;\n");
633   fprintf(fp_cpp, "        if (predUse->_used & currUse->_used) {\n");
634   fprintf(fp_cpp, "          Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
635   fprintf(fp_cpp, "          Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
636   fprintf(fp_cpp, "          for ( y <<= curr_delay; x.overlaps(y); curr_delay++ )\n");
637   fprintf(fp_cpp, "            y <<= 1;\n");
638   fprintf(fp_cpp, "        }\n");
639   fprintf(fp_cpp, "        if (min_delay > curr_delay)\n          min_delay = curr_delay;\n");
640   fprintf(fp_cpp, "      }\n");
641   fprintf(fp_cpp, "      if (delay < min_delay)\n      delay = min_delay;\n");
642   fprintf(fp_cpp, "    }\n");
643   fprintf(fp_cpp, "    else {\n");
644   fprintf(fp_cpp, "      for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
645   fprintf(fp_cpp, "        const Pipeline_Use_Element *currUse = element(j);\n");
646   fprintf(fp_cpp, "        if (predUse->_used & currUse->_used) {\n");
647   fprintf(fp_cpp, "          Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
648   fprintf(fp_cpp, "          Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
649   fprintf(fp_cpp, "          for ( y <<= delay; x.overlaps(y); delay++ )\n");
650   fprintf(fp_cpp, "            y <<= 1;\n");
651   fprintf(fp_cpp, "        }\n");
652   fprintf(fp_cpp, "      }\n");
653   fprintf(fp_cpp, "    }\n");
654   fprintf(fp_cpp, "  }\n\n");
655   fprintf(fp_cpp, "  return (delay);\n");
656   fprintf(fp_cpp, "}\n\n");
657   fprintf(fp_cpp, "void Pipeline_Use::add_usage(const Pipeline_Use &pred) {\n");
658   fprintf(fp_cpp, "  for (uint i = 0; i < pred._count; i++) {\n");
659   fprintf(fp_cpp, "    const Pipeline_Use_Element *predUse = pred.element(i);\n");
660   fprintf(fp_cpp, "    if (predUse->_multiple) {\n");
661   fprintf(fp_cpp, "      // Multiple possible functional units, choose first unused one\n");
662   fprintf(fp_cpp, "      for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
663   fprintf(fp_cpp, "        Pipeline_Use_Element *currUse = element(j);\n");
664   fprintf(fp_cpp, "        if ( !predUse->_mask.overlaps(currUse->_mask) ) {\n");
665   fprintf(fp_cpp, "          currUse->_used |= (1 << j);\n");
666   fprintf(fp_cpp, "          _resources_used |= (1 << j);\n");
667   fprintf(fp_cpp, "          currUse->_mask.Or(predUse->_mask);\n");
668   fprintf(fp_cpp, "          break;\n");
669   fprintf(fp_cpp, "        }\n");
670   fprintf(fp_cpp, "      }\n");
671   fprintf(fp_cpp, "    }\n");
672   fprintf(fp_cpp, "    else {\n");
673   fprintf(fp_cpp, "      for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
674   fprintf(fp_cpp, "        Pipeline_Use_Element *currUse = element(j);\n");
675   fprintf(fp_cpp, "        currUse->_used |= (1 << j);\n");
676   fprintf(fp_cpp, "        _resources_used |= (1 << j);\n");
677   fprintf(fp_cpp, "        currUse->_mask.Or(predUse->_mask);\n");
678   fprintf(fp_cpp, "      }\n");
679   fprintf(fp_cpp, "    }\n");
680   fprintf(fp_cpp, "  }\n");
681   fprintf(fp_cpp, "}\n\n");
682 
683   fprintf(fp_cpp, "uint Pipeline::operand_latency(uint opnd, const Pipeline *pred) const {\n");
684   fprintf(fp_cpp, "  int const default_latency = 1;\n");
685   fprintf(fp_cpp, "\n");
686 #if 0
687   fprintf(fp_cpp, "#ifndef PRODUCT\n");
688   fprintf(fp_cpp, "  if (TraceOptoOutput) {\n");
689   fprintf(fp_cpp, "    tty->print(\"#   operand_latency(%%d), _read_stage_count = %%d\\n\", opnd, _read_stage_count);\n");
690   fprintf(fp_cpp, "  }\n");
691   fprintf(fp_cpp, "#endif\n\n");
692 #endif
693   fprintf(fp_cpp, "  assert(this, \"NULL pipeline info\");\n");
694   fprintf(fp_cpp, "  assert(pred, \"NULL predecessor pipline info\");\n\n");
695   fprintf(fp_cpp, "  if (pred->hasFixedLatency())\n    return (pred->fixedLatency());\n\n");
696   fprintf(fp_cpp, "  // If this is not an operand, then assume a dependence with 0 latency\n");
697   fprintf(fp_cpp, "  if (opnd > _read_stage_count)\n    return (0);\n\n");
698   fprintf(fp_cpp, "  uint writeStage = pred->_write_stage;\n");
699   fprintf(fp_cpp, "  uint readStage  = _read_stages[opnd-1];\n");
700 #if 0
701   fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
702   fprintf(fp_cpp, "  if (TraceOptoOutput) {\n");
703   fprintf(fp_cpp, "    tty->print(\"#   operand_latency: writeStage=%%s readStage=%%s, opnd=%%d\\n\", stageName(writeStage), stageName(readStage), opnd);\n");
704   fprintf(fp_cpp, "  }\n");
705   fprintf(fp_cpp, "#endif\n\n");
706 #endif
707   fprintf(fp_cpp, "\n");
708   fprintf(fp_cpp, "  if (writeStage == stage_undefined || readStage == stage_undefined)\n");
709   fprintf(fp_cpp, "    return (default_latency);\n");
710   fprintf(fp_cpp, "\n");
711   fprintf(fp_cpp, "  int delta = writeStage - readStage;\n");
712   fprintf(fp_cpp, "  if (delta < 0) delta = 0;\n\n");
713 #if 0
714   fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
715   fprintf(fp_cpp, "  if (TraceOptoOutput) {\n");
716   fprintf(fp_cpp, "    tty->print(\"# operand_latency: delta=%%d\\n\", delta);\n");
717   fprintf(fp_cpp, "  }\n");
718   fprintf(fp_cpp, "#endif\n\n");
719 #endif
720   fprintf(fp_cpp, "  return (delta);\n");
721   fprintf(fp_cpp, "}\n\n");
722 
723   if (!_pipeline)
724     /* Do Nothing */;
725 
726   else if (_pipeline->_maxcycleused <=
727 #ifdef SPARC
728     64
729 #else
730     32
731 #endif
732       ) {
733     fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
734     fprintf(fp_cpp, "  return Pipeline_Use_Cycle_Mask(in1._mask & in2._mask);\n");
735     fprintf(fp_cpp, "}\n\n");
736     fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
737     fprintf(fp_cpp, "  return Pipeline_Use_Cycle_Mask(in1._mask | in2._mask);\n");
738     fprintf(fp_cpp, "}\n\n");
739   }
740   else {
741     uint l;
742     uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
743     fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
744     fprintf(fp_cpp, "  return Pipeline_Use_Cycle_Mask(");
745     for (l = 1; l <= masklen; l++)
746       fprintf(fp_cpp, "in1._mask%d & in2._mask%d%s\n", l, l, l < masklen ? ", " : "");
747     fprintf(fp_cpp, ");\n");
748     fprintf(fp_cpp, "}\n\n");
749     fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
750     fprintf(fp_cpp, "  return Pipeline_Use_Cycle_Mask(");
751     for (l = 1; l <= masklen; l++)
752       fprintf(fp_cpp, "in1._mask%d | in2._mask%d%s", l, l, l < masklen ? ", " : "");
753     fprintf(fp_cpp, ");\n");
754     fprintf(fp_cpp, "}\n\n");
755     fprintf(fp_cpp, "void Pipeline_Use_Cycle_Mask::Or(const Pipeline_Use_Cycle_Mask &in2) {\n ");
756     for (l = 1; l <= masklen; l++)
757       fprintf(fp_cpp, " _mask%d |= in2._mask%d;", l, l);
758     fprintf(fp_cpp, "\n}\n\n");
759   }
760 
761   /* Get the length of all the resource names */
762   for (_pipeline->_reslist.reset(), resourcenamelen = 0;
763        (resourcename = _pipeline->_reslist.iter()) != NULL;
764        resourcenamelen += (int)strlen(resourcename));
765 
766   // Create the pipeline class description
767 
768   fprintf(fp_cpp, "static const Pipeline pipeline_class_Zero_Instructions(0, 0, true, 0, 0, false, false, false, false, NULL, NULL, NULL, Pipeline_Use(0, 0, 0, NULL));\n\n");
769   fprintf(fp_cpp, "static const Pipeline pipeline_class_Unknown_Instructions(0, 0, true, 0, 0, false, true, true, false, NULL, NULL, NULL, Pipeline_Use(0, 0, 0, NULL));\n\n");
770 
771   fprintf(fp_cpp, "const Pipeline_Use_Element Pipeline_Use::elaborated_elements[%d] = {\n", _pipeline->_rescount);
772   for (int i1 = 0; i1 < _pipeline->_rescount; i1++) {
773     fprintf(fp_cpp, "  Pipeline_Use_Element(0, %d, %d, false, Pipeline_Use_Cycle_Mask(", i1, i1);
774     uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
775     for (int i2 = masklen-1; i2 >= 0; i2--)
776       fprintf(fp_cpp, "0%s", i2 > 0 ? ", " : "");
777     fprintf(fp_cpp, "))%s\n", i1 < (_pipeline->_rescount-1) ? "," : "");
778   }
779   fprintf(fp_cpp, "};\n\n");
780 
781   fprintf(fp_cpp, "const Pipeline_Use Pipeline_Use::elaborated_use(0, 0, %d, (Pipeline_Use_Element *)&elaborated_elements[0]);\n\n",
782     _pipeline->_rescount);
783 
784   for (_pipeline->_classlist.reset(); (classname = _pipeline->_classlist.iter()) != NULL; ) {
785     fprintf(fp_cpp, "\n");
786     fprintf(fp_cpp, "// Pipeline Class \"%s\"\n", classname);
787     PipeClassForm *pipeclass = _pipeline->_classdict[classname]->is_pipeclass();
788     int maxWriteStage = -1;
789     int maxMoreInstrs = 0;
790     int paramcount = 0;
791     int i = 0;
792     const char *paramname;
793     int resource_count = (_pipeline->_rescount + 3) >> 2;
794 
795     // Scan the operands, looking for last output stage and number of inputs
796     for (pipeclass->_parameters.reset(); (paramname = pipeclass->_parameters.iter()) != NULL; ) {
797       const PipeClassOperandForm *pipeopnd =
798           (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
799       if (pipeopnd) {
800         if (pipeopnd->_iswrite) {
801            int stagenum  = _pipeline->_stages.index(pipeopnd->_stage);
802            int moreinsts = pipeopnd->_more_instrs;
803           if ((maxWriteStage+maxMoreInstrs) < (stagenum+moreinsts)) {
804             maxWriteStage = stagenum;
805             maxMoreInstrs = moreinsts;
806           }
807         }
808       }
809 
810       if (i++ > 0 || (pipeopnd && !pipeopnd->isWrite()))
811         paramcount++;
812     }
813 
814     // Create the list of stages for the operands that are read
815     // Note that we will build a NameList to reduce the number of copies
816 
817     int pipeline_reads_index = pipeline_reads_initializer(fp_cpp, pipeline_reads, pipeclass);
818 
819     int pipeline_res_stages_index = pipeline_res_stages_initializer(
820       fp_cpp, _pipeline, pipeline_res_stages, pipeclass);
821 
822     int pipeline_res_cycles_index = pipeline_res_cycles_initializer(
823       fp_cpp, _pipeline, pipeline_res_cycles, pipeclass);
824 
825     int pipeline_res_mask_index = pipeline_res_mask_initializer(
826       fp_cpp, _pipeline, pipeline_res_masks, pipeline_res_args, pipeclass);
827 
828 #if 0
829     // Process the Resources
830     const PipeClassResourceForm *piperesource;
831 
832     unsigned resources_used = 0;
833     unsigned exclusive_resources_used = 0;
834     unsigned resource_groups = 0;
835     for (pipeclass->_resUsage.reset();
836          (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
837       int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
838       if (used_mask)
839         resource_groups++;
840       resources_used |= used_mask;
841       if ((used_mask & (used_mask-1)) == 0)
842         exclusive_resources_used |= used_mask;
843     }
844 
845     if (resource_groups > 0) {
846       fprintf(fp_cpp, "static const uint pipeline_res_or_masks_%03d[%d] = {",
847         pipeclass->_num, resource_groups);
848       for (pipeclass->_resUsage.reset(), i = 1;
849            (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL;
850            i++ ) {
851         int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
852         if (used_mask) {
853           fprintf(fp_cpp, " 0x%0*x%c", resource_count, used_mask, i < (int)resource_groups ? ',' : ' ');
854         }
855       }
856       fprintf(fp_cpp, "};\n\n");
857     }
858 #endif
859 
860     // Create the pipeline class description
861     fprintf(fp_cpp, "static const Pipeline pipeline_class_%03d(",
862       pipeclass->_num);
863     if (maxWriteStage < 0)
864       fprintf(fp_cpp, "(uint)stage_undefined");
865     else if (maxMoreInstrs == 0)
866       fprintf(fp_cpp, "(uint)stage_%s", _pipeline->_stages.name(maxWriteStage));
867     else
868       fprintf(fp_cpp, "((uint)stage_%s)+%d", _pipeline->_stages.name(maxWriteStage), maxMoreInstrs);
869     fprintf(fp_cpp, ", %d, %s, %d, %d, %s, %s, %s, %s,\n",
870       paramcount,
871       pipeclass->hasFixedLatency() ? "true" : "false",
872       pipeclass->fixedLatency(),
873       pipeclass->InstructionCount(),
874       pipeclass->hasBranchDelay() ? "true" : "false",
875       pipeclass->hasMultipleBundles() ? "true" : "false",
876       pipeclass->forceSerialization() ? "true" : "false",
877       pipeclass->mayHaveNoCode() ? "true" : "false" );
878     if (paramcount > 0) {
879       fprintf(fp_cpp, "\n  (enum machPipelineStages * const) pipeline_reads_%03d,\n ",
880         pipeline_reads_index+1);
881     }
882     else
883       fprintf(fp_cpp, " NULL,");
884     fprintf(fp_cpp, "  (enum machPipelineStages * const) pipeline_res_stages_%03d,\n",
885       pipeline_res_stages_index+1);
886     fprintf(fp_cpp, "  (uint * const) pipeline_res_cycles_%03d,\n",
887       pipeline_res_cycles_index+1);
888     fprintf(fp_cpp, "  Pipeline_Use(%s, (Pipeline_Use_Element *)",
889       pipeline_res_args.name(pipeline_res_mask_index));
890     if (strlen(pipeline_res_masks.name(pipeline_res_mask_index)) > 0)
891       fprintf(fp_cpp, "&pipeline_res_mask_%03d[0]",
892         pipeline_res_mask_index+1);
893     else
894       fprintf(fp_cpp, "NULL");
895     fprintf(fp_cpp, "));\n");
896   }
897 
898   // Generate the Node::latency method if _pipeline defined
899   fprintf(fp_cpp, "\n");
900   fprintf(fp_cpp, "//------------------Inter-Instruction Latency--------------------------------\n");
901   fprintf(fp_cpp, "uint Node::latency(uint i) {\n");
902   if (_pipeline) {
903 #if 0
904     fprintf(fp_cpp, "#ifndef PRODUCT\n");
905     fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
906     fprintf(fp_cpp, "    tty->print(\"# %%4d->latency(%%d)\\n\", _idx, i);\n");
907     fprintf(fp_cpp, " }\n");
908     fprintf(fp_cpp, "#endif\n");
909 #endif
910     fprintf(fp_cpp, "  uint j;\n");
911     fprintf(fp_cpp, "  // verify in legal range for inputs\n");
912     fprintf(fp_cpp, "  assert(i < len(), \"index not in range\");\n\n");
913     fprintf(fp_cpp, "  // verify input is not null\n");
914     fprintf(fp_cpp, "  Node *pred = in(i);\n");
915     fprintf(fp_cpp, "  if (!pred)\n    return %d;\n\n",
916       non_operand_latency);
917     fprintf(fp_cpp, "  if (pred->is_Proj())\n    pred = pred->in(0);\n\n");
918     fprintf(fp_cpp, "  // if either node does not have pipeline info, use default\n");
919     fprintf(fp_cpp, "  const Pipeline *predpipe = pred->pipeline();\n");
920     fprintf(fp_cpp, "  assert(predpipe, \"no predecessor pipeline info\");\n\n");
921     fprintf(fp_cpp, "  if (predpipe->hasFixedLatency())\n    return predpipe->fixedLatency();\n\n");
922     fprintf(fp_cpp, "  const Pipeline *currpipe = pipeline();\n");
923     fprintf(fp_cpp, "  assert(currpipe, \"no pipeline info\");\n\n");
924     fprintf(fp_cpp, "  if (!is_Mach())\n    return %d;\n\n",
925       node_latency);
926     fprintf(fp_cpp, "  const MachNode *m = as_Mach();\n");
927     fprintf(fp_cpp, "  j = m->oper_input_base();\n");
928     fprintf(fp_cpp, "  if (i < j)\n    return currpipe->functional_unit_latency(%d, predpipe);\n\n",
929       non_operand_latency);
930     fprintf(fp_cpp, "  // determine which operand this is in\n");
931     fprintf(fp_cpp, "  uint n = m->num_opnds();\n");
932     fprintf(fp_cpp, "  int delta = %d;\n\n",
933       non_operand_latency);
934     fprintf(fp_cpp, "  uint k;\n");
935     fprintf(fp_cpp, "  for (k = 1; k < n; k++) {\n");
936     fprintf(fp_cpp, "    j += m->_opnds[k]->num_edges();\n");
937     fprintf(fp_cpp, "    if (i < j)\n");
938     fprintf(fp_cpp, "      break;\n");
939     fprintf(fp_cpp, "  }\n");
940     fprintf(fp_cpp, "  if (k < n)\n");
941     fprintf(fp_cpp, "    delta = currpipe->operand_latency(k,predpipe);\n\n");
942     fprintf(fp_cpp, "  return currpipe->functional_unit_latency(delta, predpipe);\n");
943   }
944   else {
945     fprintf(fp_cpp, "  // assert(false, \"pipeline functionality is not defined\");\n");
946     fprintf(fp_cpp, "  return %d;\n",
947       non_operand_latency);
948   }
949   fprintf(fp_cpp, "}\n\n");
950 
951   // Output the list of nop nodes
952   fprintf(fp_cpp, "// Descriptions for emitting different functional unit nops\n");
953   const char *nop;
954   int nopcnt = 0;
955   for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; nopcnt++ );
956 
957   fprintf(fp_cpp, "void Bundle::initialize_nops(MachNode * nop_list[%d]) {\n", nopcnt);
958   int i = 0;
959   for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; i++ ) {
960     fprintf(fp_cpp, "  nop_list[%d] = (MachNode *) new %sNode();\n", i, nop);
961   }
962   fprintf(fp_cpp, "};\n\n");
963   fprintf(fp_cpp, "#ifndef PRODUCT\n");
964   fprintf(fp_cpp, "void Bundle::dump(outputStream *st) const {\n");
965   fprintf(fp_cpp, "  static const char * bundle_flags[] = {\n");
966   fprintf(fp_cpp, "    \"\",\n");
967   fprintf(fp_cpp, "    \"use nop delay\",\n");
968   fprintf(fp_cpp, "    \"use unconditional delay\",\n");
969   fprintf(fp_cpp, "    \"use conditional delay\",\n");
970   fprintf(fp_cpp, "    \"used in conditional delay\",\n");
971   fprintf(fp_cpp, "    \"used in unconditional delay\",\n");
972   fprintf(fp_cpp, "    \"used in all conditional delays\",\n");
973   fprintf(fp_cpp, "  };\n\n");
974 
975   fprintf(fp_cpp, "  static const char *resource_names[%d] = {", _pipeline->_rescount);
976   for (i = 0; i < _pipeline->_rescount; i++)
977     fprintf(fp_cpp, " \"%s\"%c", _pipeline->_reslist.name(i), i < _pipeline->_rescount-1 ? ',' : ' ');
978   fprintf(fp_cpp, "};\n\n");
979 
980   // See if the same string is in the table
981   fprintf(fp_cpp, "  bool needs_comma = false;\n\n");
982   fprintf(fp_cpp, "  if (_flags) {\n");
983   fprintf(fp_cpp, "    st->print(\"%%s\", bundle_flags[_flags]);\n");
984   fprintf(fp_cpp, "    needs_comma = true;\n");
985   fprintf(fp_cpp, "  };\n");
986   fprintf(fp_cpp, "  if (instr_count()) {\n");
987   fprintf(fp_cpp, "    st->print(\"%%s%%d instr%%s\", needs_comma ? \", \" : \"\", instr_count(), instr_count() != 1 ? \"s\" : \"\");\n");
988   fprintf(fp_cpp, "    needs_comma = true;\n");
989   fprintf(fp_cpp, "  };\n");
990   fprintf(fp_cpp, "  uint r = resources_used();\n");
991   fprintf(fp_cpp, "  if (r) {\n");
992   fprintf(fp_cpp, "    st->print(\"%%sresource%%s:\", needs_comma ? \", \" : \"\", (r & (r-1)) != 0 ? \"s\" : \"\");\n");
993   fprintf(fp_cpp, "    for (uint i = 0; i < %d; i++)\n", _pipeline->_rescount);
994   fprintf(fp_cpp, "      if ((r & (1 << i)) != 0)\n");
995   fprintf(fp_cpp, "        st->print(\" %%s\", resource_names[i]);\n");
996   fprintf(fp_cpp, "    needs_comma = true;\n");
997   fprintf(fp_cpp, "  };\n");
998   fprintf(fp_cpp, "  st->print(\"\\n\");\n");
999   fprintf(fp_cpp, "}\n");
1000   fprintf(fp_cpp, "#endif\n");
1001 }
1002 
1003 // ---------------------------------------------------------------------------
1004 //------------------------------Utilities to build Instruction Classes--------
1005 // ---------------------------------------------------------------------------
1006 
defineOut_RegMask(FILE * fp,const char * node,const char * regMask)1007 static void defineOut_RegMask(FILE *fp, const char *node, const char *regMask) {
1008   fprintf(fp,"const RegMask &%sNode::out_RegMask() const { return (%s); }\n",
1009           node, regMask);
1010 }
1011 
print_block_index(FILE * fp,int inst_position)1012 static void print_block_index(FILE *fp, int inst_position) {
1013   assert( inst_position >= 0, "Instruction number less than zero");
1014   fprintf(fp, "block_index");
1015   if( inst_position != 0 ) {
1016     fprintf(fp, " - %d", inst_position);
1017   }
1018 }
1019 
1020 // Scan the peepmatch and output a test for each instruction
check_peepmatch_instruction_sequence(FILE * fp,PeepMatch * pmatch,PeepConstraint * pconstraint)1021 static void check_peepmatch_instruction_sequence(FILE *fp, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1022   int         parent        = -1;
1023   int         inst_position = 0;
1024   const char* inst_name     = NULL;
1025   int         input         = 0;
1026   fprintf(fp, "  // Check instruction sub-tree\n");
1027   pmatch->reset();
1028   for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1029        inst_name != NULL;
1030        pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1031     // If this is not a placeholder
1032     if( ! pmatch->is_placeholder() ) {
1033       // Define temporaries 'inst#', based on parent and parent's input index
1034       if( parent != -1 ) {                // root was initialized
1035         fprintf(fp, "  // Identify previous instruction if inside this block\n");
1036         fprintf(fp, "  if( ");
1037         print_block_index(fp, inst_position);
1038         fprintf(fp, " > 0 ) {\n    Node *n = block->get_node(");
1039         print_block_index(fp, inst_position);
1040         fprintf(fp, ");\n    inst%d = (n->is_Mach()) ? ", inst_position);
1041         fprintf(fp, "n->as_Mach() : NULL;\n  }\n");
1042       }
1043 
1044       // When not the root
1045       // Test we have the correct instruction by comparing the rule.
1046       if( parent != -1 ) {
1047         fprintf(fp, "  matches = matches && (inst%d != NULL) && (inst%d->rule() == %s_rule);\n",
1048                 inst_position, inst_position, inst_name);
1049       }
1050     } else {
1051       // Check that user did not try to constrain a placeholder
1052       assert( ! pconstraint->constrains_instruction(inst_position),
1053               "fatal(): Can not constrain a placeholder instruction");
1054     }
1055   }
1056 }
1057 
1058 // Build mapping for register indices, num_edges to input
build_instruction_index_mapping(FILE * fp,FormDict & globals,PeepMatch * pmatch)1059 static void build_instruction_index_mapping( FILE *fp, FormDict &globals, PeepMatch *pmatch ) {
1060   int         parent        = -1;
1061   int         inst_position = 0;
1062   const char* inst_name     = NULL;
1063   int         input         = 0;
1064   fprintf(fp, "      // Build map to register info\n");
1065   pmatch->reset();
1066   for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1067        inst_name != NULL;
1068        pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1069     // If this is not a placeholder
1070     if( ! pmatch->is_placeholder() ) {
1071       // Define temporaries 'inst#', based on self's inst_position
1072       InstructForm *inst = globals[inst_name]->is_instruction();
1073       if( inst != NULL ) {
1074         char inst_prefix[]  = "instXXXX_";
1075         sprintf(inst_prefix, "inst%d_",   inst_position);
1076         char receiver[]     = "instXXXX->";
1077         sprintf(receiver,    "inst%d->", inst_position);
1078         inst->index_temps( fp, globals, inst_prefix, receiver );
1079       }
1080     }
1081   }
1082 }
1083 
1084 // Generate tests for the constraints
check_peepconstraints(FILE * fp,FormDict & globals,PeepMatch * pmatch,PeepConstraint * pconstraint)1085 static void check_peepconstraints(FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1086   fprintf(fp, "\n");
1087   fprintf(fp, "      // Check constraints on sub-tree-leaves\n");
1088 
1089   // Build mapping from num_edges to local variables
1090   build_instruction_index_mapping( fp, globals, pmatch );
1091 
1092   // Build constraint tests
1093   if( pconstraint != NULL ) {
1094     fprintf(fp, "      matches = matches &&");
1095     bool   first_constraint = true;
1096     while( pconstraint != NULL ) {
1097       // indentation and connecting '&&'
1098       const char *indentation = "      ";
1099       fprintf(fp, "\n%s%s", indentation, (!first_constraint ? "&& " : "  "));
1100 
1101       // Only have '==' relation implemented
1102       if( strcmp(pconstraint->_relation,"==") != 0 ) {
1103         assert( false, "Unimplemented()" );
1104       }
1105 
1106       // LEFT
1107       int left_index       = pconstraint->_left_inst;
1108       const char *left_op  = pconstraint->_left_op;
1109       // Access info on the instructions whose operands are compared
1110       InstructForm *inst_left = globals[pmatch->instruction_name(left_index)]->is_instruction();
1111       assert( inst_left, "Parser should guaranty this is an instruction");
1112       int left_op_base  = inst_left->oper_input_base(globals);
1113       // Access info on the operands being compared
1114       int left_op_index  = inst_left->operand_position(left_op, Component::USE);
1115       if( left_op_index == -1 ) {
1116         left_op_index = inst_left->operand_position(left_op, Component::DEF);
1117         if( left_op_index == -1 ) {
1118           left_op_index = inst_left->operand_position(left_op, Component::USE_DEF);
1119         }
1120       }
1121       assert( left_op_index  != NameList::Not_in_list, "Did not find operand in instruction");
1122       ComponentList components_left = inst_left->_components;
1123       const char *left_comp_type = components_left.at(left_op_index)->_type;
1124       OpClassForm *left_opclass = globals[left_comp_type]->is_opclass();
1125       Form::InterfaceType left_interface_type = left_opclass->interface_type(globals);
1126 
1127 
1128       // RIGHT
1129       int right_op_index = -1;
1130       int right_index      = pconstraint->_right_inst;
1131       const char *right_op = pconstraint->_right_op;
1132       if( right_index != -1 ) { // Match operand
1133         // Access info on the instructions whose operands are compared
1134         InstructForm *inst_right = globals[pmatch->instruction_name(right_index)]->is_instruction();
1135         assert( inst_right, "Parser should guaranty this is an instruction");
1136         int right_op_base = inst_right->oper_input_base(globals);
1137         // Access info on the operands being compared
1138         right_op_index = inst_right->operand_position(right_op, Component::USE);
1139         if( right_op_index == -1 ) {
1140           right_op_index = inst_right->operand_position(right_op, Component::DEF);
1141           if( right_op_index == -1 ) {
1142             right_op_index = inst_right->operand_position(right_op, Component::USE_DEF);
1143           }
1144         }
1145         assert( right_op_index != NameList::Not_in_list, "Did not find operand in instruction");
1146         ComponentList components_right = inst_right->_components;
1147         const char *right_comp_type = components_right.at(right_op_index)->_type;
1148         OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1149         Form::InterfaceType right_interface_type = right_opclass->interface_type(globals);
1150         assert( right_interface_type == left_interface_type, "Both must be same interface");
1151 
1152       } else {                  // Else match register
1153         // assert( false, "should be a register" );
1154       }
1155 
1156       //
1157       // Check for equivalence
1158       //
1159       // fprintf(fp, "phase->eqv( ");
1160       // fprintf(fp, "inst%d->in(%d+%d) /* %s */, inst%d->in(%d+%d) /* %s */",
1161       //         left_index,  left_op_base,  left_op_index,  left_op,
1162       //         right_index, right_op_base, right_op_index, right_op );
1163       // fprintf(fp, ")");
1164       //
1165       switch( left_interface_type ) {
1166       case Form::register_interface: {
1167         // Check that they are allocated to the same register
1168         // Need parameter for index position if not result operand
1169         char left_reg_index[] = ",instXXXX_idxXXXX";
1170         if( left_op_index != 0 ) {
1171           assert( (left_index <= 9999) && (left_op_index <= 9999), "exceed string size");
1172           // Must have index into operands
1173           sprintf(left_reg_index,",inst%d_idx%d", (int)left_index, left_op_index);
1174         } else {
1175           strcpy(left_reg_index, "");
1176         }
1177         fprintf(fp, "(inst%d->_opnds[%d]->reg(ra_,inst%d%s)  /* %d.%s */",
1178                 left_index,  left_op_index, left_index, left_reg_index, left_index, left_op );
1179         fprintf(fp, " == ");
1180 
1181         if( right_index != -1 ) {
1182           char right_reg_index[18] = ",instXXXX_idxXXXX";
1183           if( right_op_index != 0 ) {
1184             assert( (right_index <= 9999) && (right_op_index <= 9999), "exceed string size");
1185             // Must have index into operands
1186             sprintf(right_reg_index,",inst%d_idx%d", (int)right_index, right_op_index);
1187           } else {
1188             strcpy(right_reg_index, "");
1189           }
1190           fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->reg(ra_,inst%d%s)",
1191                   right_index, right_op, right_index, right_op_index, right_index, right_reg_index );
1192         } else {
1193           fprintf(fp, "%s_enc", right_op );
1194         }
1195         fprintf(fp,")");
1196         break;
1197       }
1198       case Form::constant_interface: {
1199         // Compare the '->constant()' values
1200         fprintf(fp, "(inst%d->_opnds[%d]->constant()  /* %d.%s */",
1201                 left_index,  left_op_index,  left_index, left_op );
1202         fprintf(fp, " == ");
1203         fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->constant())",
1204                 right_index, right_op, right_index, right_op_index );
1205         break;
1206       }
1207       case Form::memory_interface: {
1208         // Compare 'base', 'index', 'scale', and 'disp'
1209         // base
1210         fprintf(fp, "( \n");
1211         fprintf(fp, "  (inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d)  /* %d.%s$$base */",
1212           left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1213         fprintf(fp, " == ");
1214         fprintf(fp, "/* %d.%s$$base */ inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d)) &&\n",
1215                 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1216         // index
1217         fprintf(fp, "  (inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d)  /* %d.%s$$index */",
1218                 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1219         fprintf(fp, " == ");
1220         fprintf(fp, "/* %d.%s$$index */ inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d)) &&\n",
1221                 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1222         // scale
1223         fprintf(fp, "  (inst%d->_opnds[%d]->scale()  /* %d.%s$$scale */",
1224                 left_index,  left_op_index,  left_index, left_op );
1225         fprintf(fp, " == ");
1226         fprintf(fp, "/* %d.%s$$scale */ inst%d->_opnds[%d]->scale()) &&\n",
1227                 right_index, right_op, right_index, right_op_index );
1228         // disp
1229         fprintf(fp, "  (inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d)  /* %d.%s$$disp */",
1230                 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1231         fprintf(fp, " == ");
1232         fprintf(fp, "/* %d.%s$$disp */ inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d))\n",
1233                 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1234         fprintf(fp, ") \n");
1235         break;
1236       }
1237       case Form::conditional_interface: {
1238         // Compare the condition code being tested
1239         assert( false, "Unimplemented()" );
1240         break;
1241       }
1242       default: {
1243         assert( false, "ShouldNotReachHere()" );
1244         break;
1245       }
1246       }
1247 
1248       // Advance to next constraint
1249       pconstraint = pconstraint->next();
1250       first_constraint = false;
1251     }
1252 
1253     fprintf(fp, ";\n");
1254   }
1255 }
1256 
1257 // // EXPERIMENTAL -- TEMPORARY code
1258 // static Form::DataType get_operand_type(FormDict &globals, InstructForm *instr, const char *op_name ) {
1259 //   int op_index = instr->operand_position(op_name, Component::USE);
1260 //   if( op_index == -1 ) {
1261 //     op_index = instr->operand_position(op_name, Component::DEF);
1262 //     if( op_index == -1 ) {
1263 //       op_index = instr->operand_position(op_name, Component::USE_DEF);
1264 //     }
1265 //   }
1266 //   assert( op_index != NameList::Not_in_list, "Did not find operand in instruction");
1267 //
1268 //   ComponentList components_right = instr->_components;
1269 //   char *right_comp_type = components_right.at(op_index)->_type;
1270 //   OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1271 //   Form::InterfaceType  right_interface_type = right_opclass->interface_type(globals);
1272 //
1273 //   return;
1274 // }
1275 
1276 // Construct the new sub-tree
generate_peepreplace(FILE * fp,FormDict & globals,PeepMatch * pmatch,PeepConstraint * pconstraint,PeepReplace * preplace,int max_position)1277 static void generate_peepreplace( FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint, PeepReplace *preplace, int max_position ) {
1278   fprintf(fp, "      // IF instructions and constraints matched\n");
1279   fprintf(fp, "      if( matches ) {\n");
1280   fprintf(fp, "        // generate the new sub-tree\n");
1281   fprintf(fp, "        assert( true, \"Debug stopping point\");\n");
1282   if( preplace != NULL ) {
1283     // Get the root of the new sub-tree
1284     const char *root_inst = NULL;
1285     preplace->next_instruction(root_inst);
1286     InstructForm *root_form = globals[root_inst]->is_instruction();
1287     assert( root_form != NULL, "Replacement instruction was not previously defined");
1288     fprintf(fp, "        %sNode *root = new %sNode();\n", root_inst, root_inst);
1289 
1290     int         inst_num;
1291     const char *op_name;
1292     int         opnds_index = 0;            // define result operand
1293     // Then install the use-operands for the new sub-tree
1294     // preplace->reset();             // reset breaks iteration
1295     for( preplace->next_operand( inst_num, op_name );
1296          op_name != NULL;
1297          preplace->next_operand( inst_num, op_name ) ) {
1298       InstructForm *inst_form;
1299       inst_form  = globals[pmatch->instruction_name(inst_num)]->is_instruction();
1300       assert( inst_form, "Parser should guaranty this is an instruction");
1301       int inst_op_num = inst_form->operand_position(op_name, Component::USE);
1302       if( inst_op_num == NameList::Not_in_list )
1303         inst_op_num = inst_form->operand_position(op_name, Component::USE_DEF);
1304       assert( inst_op_num != NameList::Not_in_list, "Did not find operand as USE");
1305       // find the name of the OperandForm from the local name
1306       const Form *form   = inst_form->_localNames[op_name];
1307       OperandForm  *op_form = form->is_operand();
1308       if( opnds_index == 0 ) {
1309         // Initial setup of new instruction
1310         fprintf(fp, "        // ----- Initial setup -----\n");
1311         //
1312         // Add control edge for this node
1313         fprintf(fp, "        root->add_req(_in[0]);                // control edge\n");
1314         // Add unmatched edges from root of match tree
1315         int op_base = root_form->oper_input_base(globals);
1316         for( int unmatched_edge = 1; unmatched_edge < op_base; ++unmatched_edge ) {
1317           fprintf(fp, "        root->add_req(inst%d->in(%d));        // unmatched ideal edge\n",
1318                                           inst_num, unmatched_edge);
1319         }
1320         // If new instruction captures bottom type
1321         if( root_form->captures_bottom_type(globals) ) {
1322           // Get bottom type from instruction whose result we are replacing
1323           fprintf(fp, "        root->_bottom_type = inst%d->bottom_type();\n", inst_num);
1324         }
1325         // Define result register and result operand
1326         fprintf(fp, "        ra_->add_reference(root, inst%d);\n", inst_num);
1327         fprintf(fp, "        ra_->set_oop (root, ra_->is_oop(inst%d));\n", inst_num);
1328         fprintf(fp, "        ra_->set_pair(root->_idx, ra_->get_reg_second(inst%d), ra_->get_reg_first(inst%d));\n", inst_num, inst_num);
1329         fprintf(fp, "        root->_opnds[0] = inst%d->_opnds[0]->clone(); // result\n", inst_num);
1330         fprintf(fp, "        // ----- Done with initial setup -----\n");
1331       } else {
1332         if( (op_form == NULL) || (op_form->is_base_constant(globals) == Form::none) ) {
1333           // Do not have ideal edges for constants after matching
1334           fprintf(fp, "        for( unsigned x%d = inst%d_idx%d; x%d < inst%d_idx%d; x%d++ )\n",
1335                   inst_op_num, inst_num, inst_op_num,
1336                   inst_op_num, inst_num, inst_op_num+1, inst_op_num );
1337           fprintf(fp, "          root->add_req( inst%d->in(x%d) );\n",
1338                   inst_num, inst_op_num );
1339         } else {
1340           fprintf(fp, "        // no ideal edge for constants after matching\n");
1341         }
1342         fprintf(fp, "        root->_opnds[%d] = inst%d->_opnds[%d]->clone();\n",
1343                 opnds_index, inst_num, inst_op_num );
1344       }
1345       ++opnds_index;
1346     }
1347   }else {
1348     // Replacing subtree with empty-tree
1349     assert( false, "ShouldNotReachHere();");
1350   }
1351 
1352   // Return the new sub-tree
1353   fprintf(fp, "        deleted = %d;\n", max_position+1 /*zero to one based*/);
1354   fprintf(fp, "        return root;  // return new root;\n");
1355   fprintf(fp, "      }\n");
1356 }
1357 
1358 
1359 // Define the Peephole method for an instruction node
definePeephole(FILE * fp,InstructForm * node)1360 void ArchDesc::definePeephole(FILE *fp, InstructForm *node) {
1361   // Generate Peephole function header
1362   fprintf(fp, "MachNode *%sNode::peephole(Block *block, int block_index, PhaseRegAlloc *ra_, int &deleted) {\n", node->_ident);
1363   fprintf(fp, "  bool  matches = true;\n");
1364 
1365   // Identify the maximum instruction position,
1366   // generate temporaries that hold current instruction
1367   //
1368   //   MachNode  *inst0 = NULL;
1369   //   ...
1370   //   MachNode  *instMAX = NULL;
1371   //
1372   int max_position = 0;
1373   Peephole *peep;
1374   for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1375     PeepMatch *pmatch = peep->match();
1376     assert( pmatch != NULL, "fatal(), missing peepmatch rule");
1377     if( max_position < pmatch->max_position() )  max_position = pmatch->max_position();
1378   }
1379   for( int i = 0; i <= max_position; ++i ) {
1380     if( i == 0 ) {
1381       fprintf(fp, "  MachNode *inst0 = this;\n");
1382     } else {
1383       fprintf(fp, "  MachNode *inst%d = NULL;\n", i);
1384     }
1385   }
1386 
1387   // For each peephole rule in architecture description
1388   //   Construct a test for the desired instruction sub-tree
1389   //   then check the constraints
1390   //   If these match, Generate the new subtree
1391   for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1392     int         peephole_number = peep->peephole_number();
1393     PeepMatch      *pmatch      = peep->match();
1394     PeepConstraint *pconstraint = peep->constraints();
1395     PeepReplace    *preplace    = peep->replacement();
1396 
1397     // Root of this peephole is the current MachNode
1398     assert( true, // %%name?%% strcmp( node->_ident, pmatch->name(0) ) == 0,
1399             "root of PeepMatch does not match instruction");
1400 
1401     // Make each peephole rule individually selectable
1402     fprintf(fp, "  if( (OptoPeepholeAt == -1) || (OptoPeepholeAt==%d) ) {\n", peephole_number);
1403     fprintf(fp, "    matches = true;\n");
1404     // Scan the peepmatch and output a test for each instruction
1405     check_peepmatch_instruction_sequence( fp, pmatch, pconstraint );
1406 
1407     // Check constraints and build replacement inside scope
1408     fprintf(fp, "    // If instruction subtree matches\n");
1409     fprintf(fp, "    if( matches ) {\n");
1410 
1411     // Generate tests for the constraints
1412     check_peepconstraints( fp, _globalNames, pmatch, pconstraint );
1413 
1414     // Construct the new sub-tree
1415     generate_peepreplace( fp, _globalNames, pmatch, pconstraint, preplace, max_position );
1416 
1417     // End of scope for this peephole's constraints
1418     fprintf(fp, "    }\n");
1419     // Closing brace '}' to make each peephole rule individually selectable
1420     fprintf(fp, "  } // end of peephole rule #%d\n", peephole_number);
1421     fprintf(fp, "\n");
1422   }
1423 
1424   fprintf(fp, "  return NULL;  // No peephole rules matched\n");
1425   fprintf(fp, "}\n");
1426   fprintf(fp, "\n");
1427 }
1428 
1429 // Define the Expand method for an instruction node
defineExpand(FILE * fp,InstructForm * node)1430 void ArchDesc::defineExpand(FILE *fp, InstructForm *node) {
1431   unsigned      cnt  = 0;          // Count nodes we have expand into
1432   unsigned      i;
1433 
1434   // Generate Expand function header
1435   fprintf(fp, "MachNode* %sNode::Expand(State* state, Node_List& proj_list, Node* mem) {\n", node->_ident);
1436   fprintf(fp, "  Compile* C = Compile::current();\n");
1437   // Generate expand code
1438   if( node->expands() ) {
1439     const char   *opid;
1440     int           new_pos, exp_pos;
1441     const char   *new_id   = NULL;
1442     const Form   *frm      = NULL;
1443     InstructForm *new_inst = NULL;
1444     OperandForm  *new_oper = NULL;
1445     unsigned      numo     = node->num_opnds() +
1446                                 node->_exprule->_newopers.count();
1447 
1448     // If necessary, generate any operands created in expand rule
1449     if (node->_exprule->_newopers.count()) {
1450       for(node->_exprule->_newopers.reset();
1451           (new_id = node->_exprule->_newopers.iter()) != NULL; cnt++) {
1452         frm = node->_localNames[new_id];
1453         assert(frm, "Invalid entry in new operands list of expand rule");
1454         new_oper = frm->is_operand();
1455         char *tmp = (char *)node->_exprule->_newopconst[new_id];
1456         if (tmp == NULL) {
1457           fprintf(fp,"  MachOper *op%d = new %sOper();\n",
1458                   cnt, new_oper->_ident);
1459         }
1460         else {
1461           fprintf(fp,"  MachOper *op%d = new %sOper(%s);\n",
1462                   cnt, new_oper->_ident, tmp);
1463         }
1464       }
1465     }
1466     cnt = 0;
1467     // Generate the temps to use for DAG building
1468     for(i = 0; i < numo; i++) {
1469       if (i < node->num_opnds()) {
1470         fprintf(fp,"  MachNode *tmp%d = this;\n", i);
1471       }
1472       else {
1473         fprintf(fp,"  MachNode *tmp%d = NULL;\n", i);
1474       }
1475     }
1476     // Build mapping from num_edges to local variables
1477     fprintf(fp,"  unsigned num0 = 0;\n");
1478     for( i = 1; i < node->num_opnds(); i++ ) {
1479       fprintf(fp,"  unsigned num%d = opnd_array(%d)->num_edges();\n",i,i);
1480     }
1481 
1482     // Build a mapping from operand index to input edges
1483     fprintf(fp,"  unsigned idx0 = oper_input_base();\n");
1484 
1485     // The order in which the memory input is added to a node is very
1486     // strange.  Store nodes get a memory input before Expand is
1487     // called and other nodes get it afterwards or before depending on
1488     // match order so oper_input_base is wrong during expansion.  This
1489     // code adjusts it so that expansion will work correctly.
1490     int has_memory_edge = node->_matrule->needs_ideal_memory_edge(_globalNames);
1491     if (has_memory_edge) {
1492       fprintf(fp,"  if (mem == (Node*)1) {\n");
1493       fprintf(fp,"    idx0--; // Adjust base because memory edge hasn't been inserted yet\n");
1494       fprintf(fp,"  }\n");
1495     }
1496 
1497     for( i = 0; i < node->num_opnds(); i++ ) {
1498       fprintf(fp,"  unsigned idx%d = idx%d + num%d;\n",
1499               i+1,i,i);
1500     }
1501 
1502     // Declare variable to hold root of expansion
1503     fprintf(fp,"  MachNode *result = NULL;\n");
1504 
1505     // Iterate over the instructions 'node' expands into
1506     ExpandRule  *expand       = node->_exprule;
1507     NameAndList *expand_instr = NULL;
1508     for (expand->reset_instructions();
1509          (expand_instr = expand->iter_instructions()) != NULL; cnt++) {
1510       new_id = expand_instr->name();
1511 
1512       InstructForm* expand_instruction = (InstructForm*)globalAD->globalNames()[new_id];
1513 
1514       if (!expand_instruction) {
1515         globalAD->syntax_err(node->_linenum, "In %s: instruction %s used in expand not declared\n",
1516                              node->_ident, new_id);
1517         continue;
1518       }
1519 
1520       // Build the node for the instruction
1521       fprintf(fp,"\n  %sNode *n%d = new %sNode();\n", new_id, cnt, new_id);
1522       // Add control edge for this node
1523       fprintf(fp,"  n%d->add_req(_in[0]);\n", cnt);
1524       // Build the operand for the value this node defines.
1525       Form *form = (Form*)_globalNames[new_id];
1526       assert(form, "'new_id' must be a defined form name");
1527       // Grab the InstructForm for the new instruction
1528       new_inst = form->is_instruction();
1529       assert(new_inst, "'new_id' must be an instruction name");
1530       if (node->is_ideal_if() && new_inst->is_ideal_if()) {
1531         fprintf(fp, "  ((MachIfNode*)n%d)->_prob = _prob;\n", cnt);
1532         fprintf(fp, "  ((MachIfNode*)n%d)->_fcnt = _fcnt;\n", cnt);
1533       }
1534 
1535       if (node->is_ideal_fastlock() && new_inst->is_ideal_fastlock()) {
1536         fprintf(fp, "  ((MachFastLockNode*)n%d)->_counters = _counters;\n", cnt);
1537         fprintf(fp, "  ((MachFastLockNode*)n%d)->_rtm_counters = _rtm_counters;\n", cnt);
1538         fprintf(fp, "  ((MachFastLockNode*)n%d)->_stack_rtm_counters = _stack_rtm_counters;\n", cnt);
1539       }
1540 
1541       // Fill in the bottom_type where requested
1542       if (node->captures_bottom_type(_globalNames) &&
1543           new_inst->captures_bottom_type(_globalNames)) {
1544         fprintf(fp, "  ((MachTypeNode*)n%d)->_bottom_type = bottom_type();\n", cnt);
1545       }
1546 
1547       const char *resultOper = new_inst->reduce_result();
1548       fprintf(fp,"  n%d->set_opnd_array(0, state->MachOperGenerator(%s));\n",
1549               cnt, machOperEnum(resultOper));
1550 
1551       // get the formal operand NameList
1552       NameList *formal_lst = &new_inst->_parameters;
1553       formal_lst->reset();
1554 
1555       // Handle any memory operand
1556       int memory_operand = new_inst->memory_operand(_globalNames);
1557       if( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
1558         int node_mem_op = node->memory_operand(_globalNames);
1559         assert( node_mem_op != InstructForm::NO_MEMORY_OPERAND,
1560                 "expand rule member needs memory but top-level inst doesn't have any" );
1561         if (has_memory_edge) {
1562           // Copy memory edge
1563           fprintf(fp,"  if (mem != (Node*)1) {\n");
1564           fprintf(fp,"    n%d->add_req(_in[1]);\t// Add memory edge\n", cnt);
1565           fprintf(fp,"  }\n");
1566         }
1567       }
1568 
1569       // Iterate over the new instruction's operands
1570       int prev_pos = -1;
1571       for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) {
1572         // Use 'parameter' at current position in list of new instruction's formals
1573         // instead of 'opid' when looking up info internal to new_inst
1574         const char *parameter = formal_lst->iter();
1575         if (!parameter) {
1576           globalAD->syntax_err(node->_linenum, "Operand %s of expand instruction %s has"
1577                                " no equivalent in new instruction %s.",
1578                                opid, node->_ident, new_inst->_ident);
1579           assert(0, "Wrong expand");
1580         }
1581 
1582         // Check for an operand which is created in the expand rule
1583         if ((exp_pos = node->_exprule->_newopers.index(opid)) != -1) {
1584           new_pos = new_inst->operand_position(parameter,Component::USE);
1585           exp_pos += node->num_opnds();
1586           // If there is no use of the created operand, just skip it
1587           if (new_pos != NameList::Not_in_list) {
1588             //Copy the operand from the original made above
1589             fprintf(fp,"  n%d->set_opnd_array(%d, op%d->clone()); // %s\n",
1590                     cnt, new_pos, exp_pos-node->num_opnds(), opid);
1591             // Check for who defines this operand & add edge if needed
1592             fprintf(fp,"  if(tmp%d != NULL)\n", exp_pos);
1593             fprintf(fp,"    n%d->add_req(tmp%d);\n", cnt, exp_pos);
1594           }
1595         }
1596         else {
1597           // Use operand name to get an index into instruction component list
1598           // ins = (InstructForm *) _globalNames[new_id];
1599           exp_pos = node->operand_position_format(opid);
1600           assert(exp_pos != -1, "Bad expand rule");
1601           if (prev_pos > exp_pos && expand_instruction->_matrule != NULL) {
1602             // For the add_req calls below to work correctly they need
1603             // to added in the same order that a match would add them.
1604             // This means that they would need to be in the order of
1605             // the components list instead of the formal parameters.
1606             // This is a sort of hidden invariant that previously
1607             // wasn't checked and could lead to incorrectly
1608             // constructed nodes.
1609             syntax_err(node->_linenum, "For expand in %s to work, parameter declaration order in %s must follow matchrule\n",
1610                        node->_ident, new_inst->_ident);
1611           }
1612           prev_pos = exp_pos;
1613 
1614           new_pos = new_inst->operand_position(parameter,Component::USE);
1615           if (new_pos != -1) {
1616             // Copy the operand from the ExpandNode to the new node
1617             fprintf(fp,"  n%d->set_opnd_array(%d, opnd_array(%d)->clone()); // %s\n",
1618                     cnt, new_pos, exp_pos, opid);
1619             // For each operand add appropriate input edges by looking at tmp's
1620             fprintf(fp,"  if(tmp%d == this) {\n", exp_pos);
1621             // Grab corresponding edges from ExpandNode and insert them here
1622             fprintf(fp,"    for(unsigned i = 0; i < num%d; i++) {\n", exp_pos);
1623             fprintf(fp,"      n%d->add_req(_in[i + idx%d]);\n", cnt, exp_pos);
1624             fprintf(fp,"    }\n");
1625             fprintf(fp,"  }\n");
1626             // This value is generated by one of the new instructions
1627             fprintf(fp,"  else n%d->add_req(tmp%d);\n", cnt, exp_pos);
1628           }
1629         }
1630 
1631         // Update the DAG tmp's for values defined by this instruction
1632         int new_def_pos = new_inst->operand_position(parameter,Component::DEF);
1633         Effect *eform = (Effect *)new_inst->_effects[parameter];
1634         // If this operand is a definition in either an effects rule
1635         // or a match rule
1636         if((eform) && (is_def(eform->_use_def))) {
1637           // Update the temp associated with this operand
1638           fprintf(fp,"  tmp%d = n%d;\n", exp_pos, cnt);
1639         }
1640         else if( new_def_pos != -1 ) {
1641           // Instruction defines a value but user did not declare it
1642           // in the 'effect' clause
1643           fprintf(fp,"  tmp%d = n%d;\n", exp_pos, cnt);
1644         }
1645       } // done iterating over a new instruction's operands
1646 
1647       // Fix number of operands, as we do not generate redundant ones.
1648       // The matcher generates some redundant operands, which are removed
1649       // in the expand function (of the node we generate here). We don't
1650       // generate the redundant operands here, so set the correct _num_opnds.
1651       if (expand_instruction->num_opnds() != expand_instruction->num_unique_opnds()) {
1652         fprintf(fp, "  n%d->_num_opnds = %d; // Only unique opnds generated.\n",
1653                 cnt, expand_instruction->num_unique_opnds());
1654       }
1655 
1656       // Invoke Expand() for the newly created instruction.
1657       fprintf(fp,"  result = n%d->Expand( state, proj_list, mem );\n", cnt);
1658       assert( !new_inst->expands(), "Do not have complete support for recursive expansion");
1659     } // done iterating over new instructions
1660     fprintf(fp,"\n");
1661   } // done generating expand rule
1662 
1663   // Generate projections for instruction's additional DEFs and KILLs
1664   if( ! node->expands() && (node->needs_projections() || node->has_temps())) {
1665     // Get string representing the MachNode that projections point at
1666     const char *machNode = "this";
1667     // Generate the projections
1668     fprintf(fp,"  // Add projection edges for additional defs or kills\n");
1669 
1670     // Examine each component to see if it is a DEF or KILL
1671     node->_components.reset();
1672     // Skip the first component, if already handled as (SET dst (...))
1673     Component *comp = NULL;
1674     // For kills, the choice of projection numbers is arbitrary
1675     int proj_no = 1;
1676     bool declared_def  = false;
1677     bool declared_kill = false;
1678 
1679     while ((comp = node->_components.iter()) != NULL) {
1680       // Lookup register class associated with operand type
1681       Form *form = (Form*)_globalNames[comp->_type];
1682       assert(form, "component type must be a defined form");
1683       OperandForm *op = form->is_operand();
1684 
1685       if (comp->is(Component::TEMP) ||
1686           comp->is(Component::TEMP_DEF)) {
1687         fprintf(fp, "  // TEMP %s\n", comp->_name);
1688         if (!declared_def) {
1689           // Define the variable "def" to hold new MachProjNodes
1690           fprintf(fp, "  MachTempNode *def;\n");
1691           declared_def = true;
1692         }
1693         if (op && op->_interface && op->_interface->is_RegInterface()) {
1694           fprintf(fp,"  def = new MachTempNode(state->MachOperGenerator(%s));\n",
1695                   machOperEnum(op->_ident));
1696           fprintf(fp,"  add_req(def);\n");
1697           // The operand for TEMP is already constructed during
1698           // this mach node construction, see buildMachNode().
1699           //
1700           // int idx  = node->operand_position_format(comp->_name);
1701           // fprintf(fp,"  set_opnd_array(%d, state->MachOperGenerator(%s));\n",
1702           //         idx, machOperEnum(op->_ident));
1703         } else {
1704           assert(false, "can't have temps which aren't registers");
1705         }
1706       } else if (comp->isa(Component::KILL)) {
1707         fprintf(fp, "  // DEF/KILL %s\n", comp->_name);
1708 
1709         if (!declared_kill) {
1710           // Define the variable "kill" to hold new MachProjNodes
1711           fprintf(fp, "  MachProjNode *kill;\n");
1712           declared_kill = true;
1713         }
1714 
1715         assert(op, "Support additional KILLS for base operands");
1716         const char *regmask    = reg_mask(*op);
1717         const char *ideal_type = op->ideal_type(_globalNames, _register);
1718 
1719         if (!op->is_bound_register()) {
1720           syntax_err(node->_linenum, "In %s only bound registers can be killed: %s %s\n",
1721                      node->_ident, comp->_type, comp->_name);
1722         }
1723 
1724         fprintf(fp,"  kill = ");
1725         fprintf(fp,"new MachProjNode( %s, %d, (%s), Op_%s );\n",
1726                 machNode, proj_no++, regmask, ideal_type);
1727         fprintf(fp,"  proj_list.push(kill);\n");
1728       }
1729     }
1730   }
1731 
1732   if( !node->expands() && node->_matrule != NULL ) {
1733     // Remove duplicated operands and inputs which use the same name.
1734     // Search through match operands for the same name usage.
1735     // The matcher generates these non-unique operands. If the node
1736     // was constructed by an expand rule, there are no unique operands.
1737     uint cur_num_opnds = node->num_opnds();
1738     if (cur_num_opnds > 1 && cur_num_opnds != node->num_unique_opnds()) {
1739       Component *comp = NULL;
1740       fprintf(fp, "  // Remove duplicated operands and inputs which use the same name.\n");
1741       fprintf(fp, "  if (num_opnds() == %d) {\n", cur_num_opnds);
1742       // Build mapping from num_edges to local variables
1743       fprintf(fp,"    unsigned num0 = 0;\n");
1744       for (i = 1; i < cur_num_opnds; i++) {
1745         fprintf(fp,"    unsigned num%d = opnd_array(%d)->num_edges();", i, i);
1746         fprintf(fp, " \t// %s\n", node->opnd_ident(i));
1747       }
1748       // Build a mapping from operand index to input edges
1749       fprintf(fp,"    unsigned idx0 = oper_input_base();\n");
1750       for (i = 0; i < cur_num_opnds; i++) {
1751         fprintf(fp,"    unsigned idx%d = idx%d + num%d;\n", i+1, i, i);
1752       }
1753 
1754       uint new_num_opnds = 1;
1755       node->_components.reset();
1756       // Skip first unique operands.
1757       for (i = 1; i < cur_num_opnds; i++) {
1758         comp = node->_components.iter();
1759         if (i != node->unique_opnds_idx(i)) {
1760           break;
1761         }
1762         new_num_opnds++;
1763       }
1764       // Replace not unique operands with next unique operands.
1765       for ( ; i < cur_num_opnds; i++) {
1766         comp = node->_components.iter();
1767         uint j = node->unique_opnds_idx(i);
1768         // unique_opnds_idx(i) is unique if unique_opnds_idx(j) is not unique.
1769         if (j != node->unique_opnds_idx(j)) {
1770           fprintf(fp,"    set_opnd_array(%d, opnd_array(%d)->clone()); // %s\n",
1771                   new_num_opnds, i, comp->_name);
1772           // Delete not unique edges here.
1773           fprintf(fp,"    for (unsigned i = 0; i < num%d; i++) {\n", i);
1774           fprintf(fp,"      set_req(i + idx%d, _in[i + idx%d]);\n", new_num_opnds, i);
1775           fprintf(fp,"    }\n");
1776           fprintf(fp,"    num%d = num%d;\n", new_num_opnds, i);
1777           fprintf(fp,"    idx%d = idx%d + num%d;\n", new_num_opnds+1, new_num_opnds, new_num_opnds);
1778           new_num_opnds++;
1779         }
1780       }
1781       // Delete the rest of edges.
1782       fprintf(fp,"    for (int i = idx%d - 1; i >= (int)idx%d; i--) {\n", cur_num_opnds, new_num_opnds);
1783       fprintf(fp,"      del_req(i);\n");
1784       fprintf(fp,"    }\n");
1785       fprintf(fp,"    _num_opnds = %d;\n", new_num_opnds);
1786       assert(new_num_opnds == node->num_unique_opnds(), "what?");
1787       fprintf(fp, "  } else {\n");
1788       fprintf(fp, "    assert(_num_opnds == %d, \"There should be either %d or %d operands.\");\n",
1789                   new_num_opnds, new_num_opnds, cur_num_opnds);
1790       fprintf(fp, "  }\n");
1791     }
1792   }
1793 
1794   // If the node is a MachConstantNode, insert the MachConstantBaseNode edge.
1795   // NOTE: this edge must be the last input (see MachConstantNode::mach_constant_base_node_input).
1796   // There are nodes that don't use $constantablebase, but still require that it
1797   // is an input to the node. Example: divF_reg_immN, Repl32B_imm on x86_64.
1798   if (node->is_mach_constant() || node->needs_constant_base()) {
1799     if (node->is_ideal_call() != Form::invalid_type &&
1800         node->is_ideal_call() != Form::JAVA_LEAF) {
1801       fprintf(fp, "  // MachConstantBaseNode added in matcher.\n");
1802       _needs_clone_jvms = true;
1803     } else {
1804       fprintf(fp, "  add_req(C->mach_constant_base_node());\n");
1805     }
1806   }
1807 
1808   fprintf(fp, "\n");
1809   if (node->expands()) {
1810     fprintf(fp, "  return result;\n");
1811   } else {
1812     fprintf(fp, "  return this;\n");
1813   }
1814   fprintf(fp, "}\n");
1815   fprintf(fp, "\n");
1816 }
1817 
1818 
1819 //------------------------------Emit Routines----------------------------------
1820 // Special classes and routines for defining node emit routines which output
1821 // target specific instruction object encodings.
1822 // Define the ___Node::emit() routine
1823 //
1824 // (1) void  ___Node::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
1825 // (2)   // ...  encoding defined by user
1826 // (3)
1827 // (4) }
1828 //
1829 
1830 class DefineEmitState {
1831 private:
1832   enum reloc_format { RELOC_NONE        = -1,
1833                       RELOC_IMMEDIATE   =  0,
1834                       RELOC_DISP        =  1,
1835                       RELOC_CALL_DISP   =  2 };
1836   enum literal_status{ LITERAL_NOT_SEEN  = 0,
1837                        LITERAL_SEEN      = 1,
1838                        LITERAL_ACCESSED  = 2,
1839                        LITERAL_OUTPUT    = 3 };
1840   // Temporaries that describe current operand
1841   bool          _cleared;
1842   OpClassForm  *_opclass;
1843   OperandForm  *_operand;
1844   int           _operand_idx;
1845   const char   *_local_name;
1846   const char   *_operand_name;
1847   bool          _doing_disp;
1848   bool          _doing_constant;
1849   Form::DataType _constant_type;
1850   DefineEmitState::literal_status _constant_status;
1851   DefineEmitState::literal_status _reg_status;
1852   bool          _doing_emit8;
1853   bool          _doing_emit_d32;
1854   bool          _doing_emit_d16;
1855   bool          _doing_emit_hi;
1856   bool          _doing_emit_lo;
1857   bool          _may_reloc;
1858   reloc_format  _reloc_form;
1859   const char *  _reloc_type;
1860   bool          _processing_noninput;
1861 
1862   NameList      _strings_to_emit;
1863 
1864   // Stable state, set by constructor
1865   ArchDesc     &_AD;
1866   FILE         *_fp;
1867   EncClass     &_encoding;
1868   InsEncode    &_ins_encode;
1869   InstructForm &_inst;
1870 
1871 public:
DefineEmitState(FILE * fp,ArchDesc & AD,EncClass & encoding,InsEncode & ins_encode,InstructForm & inst)1872   DefineEmitState(FILE *fp, ArchDesc &AD, EncClass &encoding,
1873                   InsEncode &ins_encode, InstructForm &inst)
1874     : _AD(AD), _fp(fp), _encoding(encoding), _ins_encode(ins_encode), _inst(inst) {
1875       clear();
1876   }
1877 
clear()1878   void clear() {
1879     _cleared       = true;
1880     _opclass       = NULL;
1881     _operand       = NULL;
1882     _operand_idx   = 0;
1883     _local_name    = "";
1884     _operand_name  = "";
1885     _doing_disp    = false;
1886     _doing_constant= false;
1887     _constant_type = Form::none;
1888     _constant_status = LITERAL_NOT_SEEN;
1889     _reg_status      = LITERAL_NOT_SEEN;
1890     _doing_emit8   = false;
1891     _doing_emit_d32= false;
1892     _doing_emit_d16= false;
1893     _doing_emit_hi = false;
1894     _doing_emit_lo = false;
1895     _may_reloc     = false;
1896     _reloc_form    = RELOC_NONE;
1897     _reloc_type    = AdlcVMDeps::none_reloc_type();
1898     _strings_to_emit.clear();
1899   }
1900 
1901   // Track necessary state when identifying a replacement variable
1902   // @arg rep_var: The formal parameter of the encoding.
update_state(const char * rep_var)1903   void update_state(const char *rep_var) {
1904     // A replacement variable or one of its subfields
1905     // Obtain replacement variable from list
1906     if ( (*rep_var) != '$' ) {
1907       // A replacement variable, '$' prefix
1908       // check_rep_var( rep_var );
1909       if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
1910         // No state needed.
1911         assert( _opclass == NULL,
1912                 "'primary', 'secondary' and 'tertiary' don't follow operand.");
1913       }
1914       else if ((strcmp(rep_var, "constanttablebase") == 0) ||
1915                (strcmp(rep_var, "constantoffset")    == 0) ||
1916                (strcmp(rep_var, "constantaddress")   == 0)) {
1917         if (!(_inst.is_mach_constant() || _inst.needs_constant_base())) {
1918           _AD.syntax_err(_encoding._linenum,
1919                          "Replacement variable %s not allowed in instruct %s (only in MachConstantNode or MachCall).\n",
1920                          rep_var, _encoding._name);
1921         }
1922       }
1923       else {
1924         // Lookup its position in (formal) parameter list of encoding
1925         int   param_no  = _encoding.rep_var_index(rep_var);
1926         if ( param_no == -1 ) {
1927           _AD.syntax_err( _encoding._linenum,
1928                           "Replacement variable %s not found in enc_class %s.\n",
1929                           rep_var, _encoding._name);
1930         }
1931 
1932         // Lookup the corresponding ins_encode parameter
1933         // This is the argument (actual parameter) to the encoding.
1934         const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
1935         if (inst_rep_var == NULL) {
1936           _AD.syntax_err( _ins_encode._linenum,
1937                           "Parameter %s not passed to enc_class %s from instruct %s.\n",
1938                           rep_var, _encoding._name, _inst._ident);
1939           assert(false, "inst_rep_var == NULL, cannot continue.");
1940         }
1941 
1942         // Check if instruction's actual parameter is a local name in the instruction
1943         const Form  *local     = _inst._localNames[inst_rep_var];
1944         OpClassForm *opc       = (local != NULL) ? local->is_opclass() : NULL;
1945         // Note: assert removed to allow constant and symbolic parameters
1946         // assert( opc, "replacement variable was not found in local names");
1947         // Lookup the index position iff the replacement variable is a localName
1948         int idx  = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
1949 
1950         if ( idx != -1 ) {
1951           // This is a local in the instruction
1952           // Update local state info.
1953           _opclass        = opc;
1954           _operand_idx    = idx;
1955           _local_name     = rep_var;
1956           _operand_name   = inst_rep_var;
1957 
1958           // !!!!!
1959           // Do not support consecutive operands.
1960           assert( _operand == NULL, "Unimplemented()");
1961           _operand = opc->is_operand();
1962         }
1963         else if( ADLParser::is_literal_constant(inst_rep_var) ) {
1964           // Instruction provided a constant expression
1965           // Check later that encoding specifies $$$constant to resolve as constant
1966           _constant_status   = LITERAL_SEEN;
1967         }
1968         else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
1969           // Instruction provided an opcode: "primary", "secondary", "tertiary"
1970           // Check later that encoding specifies $$$constant to resolve as constant
1971           _constant_status   = LITERAL_SEEN;
1972         }
1973         else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
1974           // Instruction provided a literal register name for this parameter
1975           // Check that encoding specifies $$$reg to resolve.as register.
1976           _reg_status        = LITERAL_SEEN;
1977         }
1978         else {
1979           // Check for unimplemented functionality before hard failure
1980           assert(opc != NULL && strcmp(opc->_ident, "label") == 0, "Unimplemented Label");
1981           assert(false, "ShouldNotReachHere()");
1982         }
1983       } // done checking which operand this is.
1984     } else {
1985       //
1986       // A subfield variable, '$$' prefix
1987       // Check for fields that may require relocation information.
1988       // Then check that literal register parameters are accessed with 'reg' or 'constant'
1989       //
1990       if ( strcmp(rep_var,"$disp") == 0 ) {
1991         _doing_disp = true;
1992         assert( _opclass, "Must use operand or operand class before '$disp'");
1993         if( _operand == NULL ) {
1994           // Only have an operand class, generate run-time check for relocation
1995           _may_reloc    = true;
1996           _reloc_form   = RELOC_DISP;
1997           _reloc_type   = AdlcVMDeps::oop_reloc_type();
1998         } else {
1999           // Do precise check on operand: is it a ConP or not
2000           //
2001           // Check interface for value of displacement
2002           assert( ( _operand->_interface != NULL ),
2003                   "$disp can only follow memory interface operand");
2004           MemInterface *mem_interface= _operand->_interface->is_MemInterface();
2005           assert( mem_interface != NULL,
2006                   "$disp can only follow memory interface operand");
2007           const char *disp = mem_interface->_disp;
2008 
2009           if( disp != NULL && (*disp == '$') ) {
2010             // MemInterface::disp contains a replacement variable,
2011             // Check if this matches a ConP
2012             //
2013             // Lookup replacement variable, in operand's component list
2014             const char *rep_var_name = disp + 1; // Skip '$'
2015             const Component *comp = _operand->_components.search(rep_var_name);
2016             assert( comp != NULL,"Replacement variable not found in components");
2017             const char      *type = comp->_type;
2018             // Lookup operand form for replacement variable's type
2019             const Form *form = _AD.globalNames()[type];
2020             assert( form != NULL, "Replacement variable's type not found");
2021             OperandForm *op = form->is_operand();
2022             assert( op, "Attempting to emit a non-register or non-constant");
2023             // Check if this is a constant
2024             if (op->_matrule && op->_matrule->is_base_constant(_AD.globalNames())) {
2025               // Check which constant this name maps to: _c0, _c1, ..., _cn
2026               // const int idx = _operand.constant_position(_AD.globalNames(), comp);
2027               // assert( idx != -1, "Constant component not found in operand");
2028               Form::DataType dtype = op->is_base_constant(_AD.globalNames());
2029               if ( dtype == Form::idealP ) {
2030                 _may_reloc    = true;
2031                 // No longer true that idealP is always an oop
2032                 _reloc_form   = RELOC_DISP;
2033                 _reloc_type   = AdlcVMDeps::oop_reloc_type();
2034               }
2035             }
2036 
2037             else if( _operand->is_user_name_for_sReg() != Form::none ) {
2038               // The only non-constant allowed access to disp is an operand sRegX in a stackSlotX
2039               assert( op->ideal_to_sReg_type(type) != Form::none, "StackSlots access displacements using 'sRegs'");
2040               _may_reloc   = false;
2041             } else {
2042               assert( false, "fatal(); Only stackSlots can access a non-constant using 'disp'");
2043             }
2044           }
2045         } // finished with precise check of operand for relocation.
2046       } // finished with subfield variable
2047       else if ( strcmp(rep_var,"$constant") == 0 ) {
2048         _doing_constant = true;
2049         if ( _constant_status == LITERAL_NOT_SEEN ) {
2050           // Check operand for type of constant
2051           assert( _operand, "Must use operand before '$$constant'");
2052           Form::DataType dtype = _operand->is_base_constant(_AD.globalNames());
2053           _constant_type = dtype;
2054           if ( dtype == Form::idealP ) {
2055             _may_reloc    = true;
2056             // No longer true that idealP is always an oop
2057             // // _must_reloc   = true;
2058             _reloc_form   = RELOC_IMMEDIATE;
2059             _reloc_type   = AdlcVMDeps::oop_reloc_type();
2060           } else {
2061             // No relocation information needed
2062           }
2063         } else {
2064           // User-provided literals may not require relocation information !!!!!
2065           assert( _constant_status == LITERAL_SEEN, "Must know we are processing a user-provided literal");
2066         }
2067       }
2068       else if ( strcmp(rep_var,"$label") == 0 ) {
2069         // Calls containing labels require relocation
2070         if ( _inst.is_ideal_call() )  {
2071           _may_reloc    = true;
2072           // !!!!! !!!!!
2073           _reloc_type   = AdlcVMDeps::none_reloc_type();
2074         }
2075       }
2076 
2077       // literal register parameter must be accessed as a 'reg' field.
2078       if ( _reg_status != LITERAL_NOT_SEEN ) {
2079         assert( _reg_status == LITERAL_SEEN, "Must have seen register literal before now");
2080         if (strcmp(rep_var,"$reg") == 0 || reg_conversion(rep_var) != NULL) {
2081           _reg_status  = LITERAL_ACCESSED;
2082         } else {
2083           _AD.syntax_err(_encoding._linenum,
2084                          "Invalid access to literal register parameter '%s' in %s.\n",
2085                          rep_var, _encoding._name);
2086           assert( false, "invalid access to literal register parameter");
2087         }
2088       }
2089       // literal constant parameters must be accessed as a 'constant' field
2090       if (_constant_status != LITERAL_NOT_SEEN) {
2091         assert(_constant_status == LITERAL_SEEN, "Must have seen constant literal before now");
2092         if (strcmp(rep_var,"$constant") == 0) {
2093           _constant_status = LITERAL_ACCESSED;
2094         } else {
2095           _AD.syntax_err(_encoding._linenum,
2096                          "Invalid access to literal constant parameter '%s' in %s.\n",
2097                          rep_var, _encoding._name);
2098         }
2099       }
2100     } // end replacement and/or subfield
2101 
2102   }
2103 
add_rep_var(const char * rep_var)2104   void add_rep_var(const char *rep_var) {
2105     // Handle subfield and replacement variables.
2106     if ( ( *rep_var == '$' ) && ( *(rep_var+1) == '$' ) ) {
2107       // Check for emit prefix, '$$emit32'
2108       assert( _cleared, "Can not nest $$$emit32");
2109       if ( strcmp(rep_var,"$$emit32") == 0 ) {
2110         _doing_emit_d32 = true;
2111       }
2112       else if ( strcmp(rep_var,"$$emit16") == 0 ) {
2113         _doing_emit_d16 = true;
2114       }
2115       else if ( strcmp(rep_var,"$$emit_hi") == 0 ) {
2116         _doing_emit_hi  = true;
2117       }
2118       else if ( strcmp(rep_var,"$$emit_lo") == 0 ) {
2119         _doing_emit_lo  = true;
2120       }
2121       else if ( strcmp(rep_var,"$$emit8") == 0 ) {
2122         _doing_emit8    = true;
2123       }
2124       else {
2125         _AD.syntax_err(_encoding._linenum, "Unsupported $$operation '%s'\n",rep_var);
2126         assert( false, "fatal();");
2127       }
2128     }
2129     else {
2130       // Update state for replacement variables
2131       update_state( rep_var );
2132       _strings_to_emit.addName(rep_var);
2133     }
2134     _cleared  = false;
2135   }
2136 
emit_replacement()2137   void emit_replacement() {
2138     // A replacement variable or one of its subfields
2139     // Obtain replacement variable from list
2140     // const char *ec_rep_var = encoding->_rep_vars.iter();
2141     const char *rep_var;
2142     _strings_to_emit.reset();
2143     while ( (rep_var = _strings_to_emit.iter()) != NULL ) {
2144 
2145       if ( (*rep_var) == '$' ) {
2146         // A subfield variable, '$$' prefix
2147         emit_field( rep_var );
2148       } else {
2149         if (_strings_to_emit.peek() != NULL &&
2150             strcmp(_strings_to_emit.peek(), "$Address") == 0) {
2151           fprintf(_fp, "Address::make_raw(");
2152 
2153           emit_rep_var( rep_var );
2154           fprintf(_fp,"->base(ra_,this,idx%d), ", _operand_idx);
2155 
2156           _reg_status = LITERAL_ACCESSED;
2157           emit_rep_var( rep_var );
2158           fprintf(_fp,"->index(ra_,this,idx%d), ", _operand_idx);
2159 
2160           _reg_status = LITERAL_ACCESSED;
2161           emit_rep_var( rep_var );
2162           fprintf(_fp,"->scale(), ");
2163 
2164           _reg_status = LITERAL_ACCESSED;
2165           emit_rep_var( rep_var );
2166           Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2167           if( _operand  && _operand_idx==0 && stack_type != Form::none ) {
2168             fprintf(_fp,"->disp(ra_,this,0), ");
2169           } else {
2170             fprintf(_fp,"->disp(ra_,this,idx%d), ", _operand_idx);
2171           }
2172 
2173           _reg_status = LITERAL_ACCESSED;
2174           emit_rep_var( rep_var );
2175           fprintf(_fp,"->disp_reloc())");
2176 
2177           // skip trailing $Address
2178           _strings_to_emit.iter();
2179         } else {
2180           // A replacement variable, '$' prefix
2181           const char* next = _strings_to_emit.peek();
2182           const char* next2 = _strings_to_emit.peek(2);
2183           if (next != NULL && next2 != NULL && strcmp(next2, "$Register") == 0 &&
2184               (strcmp(next, "$base") == 0 || strcmp(next, "$index") == 0)) {
2185             // handle $rev_var$$base$$Register and $rev_var$$index$$Register by
2186             // producing as_Register(opnd_array(#)->base(ra_,this,idx1)).
2187             fprintf(_fp, "as_Register(");
2188             // emit the operand reference
2189             emit_rep_var( rep_var );
2190             rep_var = _strings_to_emit.iter();
2191             assert(strcmp(rep_var, "$base") == 0 || strcmp(rep_var, "$index") == 0, "bad pattern");
2192             // handle base or index
2193             emit_field(rep_var);
2194             rep_var = _strings_to_emit.iter();
2195             assert(strcmp(rep_var, "$Register") == 0, "bad pattern");
2196             // close up the parens
2197             fprintf(_fp, ")");
2198           } else {
2199             emit_rep_var( rep_var );
2200           }
2201         }
2202       } // end replacement and/or subfield
2203     }
2204   }
2205 
emit_reloc_type(const char * type)2206   void emit_reloc_type(const char* type) {
2207     fprintf(_fp, "%s", type)
2208       ;
2209   }
2210 
2211 
emit()2212   void emit() {
2213     //
2214     //   "emit_d32_reloc(" or "emit_hi_reloc" or "emit_lo_reloc"
2215     //
2216     // Emit the function name when generating an emit function
2217     if ( _doing_emit_d32 || _doing_emit_hi || _doing_emit_lo ) {
2218       const char *d32_hi_lo = _doing_emit_d32 ? "d32" : (_doing_emit_hi ? "hi" : "lo");
2219       // In general, relocatable isn't known at compiler compile time.
2220       // Check results of prior scan
2221       if ( ! _may_reloc ) {
2222         // Definitely don't need relocation information
2223         fprintf( _fp, "emit_%s(cbuf, ", d32_hi_lo );
2224         emit_replacement(); fprintf(_fp, ")");
2225       }
2226       else {
2227         // Emit RUNTIME CHECK to see if value needs relocation info
2228         // If emitting a relocatable address, use 'emit_d32_reloc'
2229         const char *disp_constant = _doing_disp ? "disp" : _doing_constant ? "constant" : "INVALID";
2230         assert( (_doing_disp || _doing_constant)
2231                 && !(_doing_disp && _doing_constant),
2232                 "Must be emitting either a displacement or a constant");
2233         fprintf(_fp,"\n");
2234         fprintf(_fp,"if ( opnd_array(%d)->%s_reloc() != relocInfo::none ) {\n",
2235                 _operand_idx, disp_constant);
2236         fprintf(_fp,"  ");
2237         fprintf(_fp,"emit_%s_reloc(cbuf, ", d32_hi_lo );
2238         emit_replacement();             fprintf(_fp,", ");
2239         fprintf(_fp,"opnd_array(%d)->%s_reloc(), ",
2240                 _operand_idx, disp_constant);
2241         fprintf(_fp, "%d", _reloc_form);fprintf(_fp, ");");
2242         fprintf(_fp,"\n");
2243         fprintf(_fp,"} else {\n");
2244         fprintf(_fp,"  emit_%s(cbuf, ", d32_hi_lo);
2245         emit_replacement(); fprintf(_fp, ");\n"); fprintf(_fp,"}");
2246       }
2247     }
2248     else if ( _doing_emit_d16 ) {
2249       // Relocation of 16-bit values is not supported
2250       fprintf(_fp,"emit_d16(cbuf, ");
2251       emit_replacement(); fprintf(_fp, ")");
2252       // No relocation done for 16-bit values
2253     }
2254     else if ( _doing_emit8 ) {
2255       // Relocation of 8-bit values is not supported
2256       fprintf(_fp,"emit_d8(cbuf, ");
2257       emit_replacement(); fprintf(_fp, ")");
2258       // No relocation done for 8-bit values
2259     }
2260     else {
2261       // Not an emit# command, just output the replacement string.
2262       emit_replacement();
2263     }
2264 
2265     // Get ready for next state collection.
2266     clear();
2267   }
2268 
2269 private:
2270 
2271   // recognizes names which represent MacroAssembler register types
2272   // and return the conversion function to build them from OptoReg
reg_conversion(const char * rep_var)2273   const char* reg_conversion(const char* rep_var) {
2274     if (strcmp(rep_var,"$Register") == 0)      return "as_Register";
2275     if (strcmp(rep_var,"$FloatRegister") == 0) return "as_FloatRegister";
2276 #if defined(IA32) || defined(AMD64)
2277     if (strcmp(rep_var,"$XMMRegister") == 0)   return "as_XMMRegister";
2278 #endif
2279     if (strcmp(rep_var,"$CondRegister") == 0)  return "as_ConditionRegister";
2280 #if defined(PPC64)
2281     if (strcmp(rep_var,"$VectorRegister") == 0)   return "as_VectorRegister";
2282     if (strcmp(rep_var,"$VectorSRegister") == 0)  return "as_VectorSRegister";
2283 #endif
2284     return NULL;
2285   }
2286 
emit_field(const char * rep_var)2287   void emit_field(const char *rep_var) {
2288     const char* reg_convert = reg_conversion(rep_var);
2289 
2290     // A subfield variable, '$$subfield'
2291     if ( strcmp(rep_var, "$reg") == 0 || reg_convert != NULL) {
2292       // $reg form or the $Register MacroAssembler type conversions
2293       assert( _operand_idx != -1,
2294               "Must use this subfield after operand");
2295       if( _reg_status == LITERAL_NOT_SEEN ) {
2296         if (_processing_noninput) {
2297           const Form  *local     = _inst._localNames[_operand_name];
2298           OperandForm *oper      = local->is_operand();
2299           const RegDef* first = oper->get_RegClass()->find_first_elem();
2300           if (reg_convert != NULL) {
2301             fprintf(_fp, "%s(%s_enc)", reg_convert, first->_regname);
2302           } else {
2303             fprintf(_fp, "%s_enc", first->_regname);
2304           }
2305         } else {
2306           fprintf(_fp,"->%s(ra_,this", reg_convert != NULL ? reg_convert : "reg");
2307           // Add parameter for index position, if not result operand
2308           if( _operand_idx != 0 ) fprintf(_fp,",idx%d", _operand_idx);
2309           fprintf(_fp,")");
2310           fprintf(_fp, "/* %s */", _operand_name);
2311         }
2312       } else {
2313         assert( _reg_status == LITERAL_OUTPUT, "should have output register literal in emit_rep_var");
2314         // Register literal has already been sent to output file, nothing more needed
2315       }
2316     }
2317     else if ( strcmp(rep_var,"$base") == 0 ) {
2318       assert( _operand_idx != -1,
2319               "Must use this subfield after operand");
2320       assert( ! _may_reloc, "UnImplemented()");
2321       fprintf(_fp,"->base(ra_,this,idx%d)", _operand_idx);
2322     }
2323     else if ( strcmp(rep_var,"$index") == 0 ) {
2324       assert( _operand_idx != -1,
2325               "Must use this subfield after operand");
2326       assert( ! _may_reloc, "UnImplemented()");
2327       fprintf(_fp,"->index(ra_,this,idx%d)", _operand_idx);
2328     }
2329     else if ( strcmp(rep_var,"$scale") == 0 ) {
2330       assert( ! _may_reloc, "UnImplemented()");
2331       fprintf(_fp,"->scale()");
2332     }
2333     else if ( strcmp(rep_var,"$cmpcode") == 0 ) {
2334       assert( ! _may_reloc, "UnImplemented()");
2335       fprintf(_fp,"->ccode()");
2336     }
2337     else if ( strcmp(rep_var,"$constant") == 0 ) {
2338       if( _constant_status == LITERAL_NOT_SEEN ) {
2339         if ( _constant_type == Form::idealD ) {
2340           fprintf(_fp,"->constantD()");
2341         } else if ( _constant_type == Form::idealF ) {
2342           fprintf(_fp,"->constantF()");
2343         } else if ( _constant_type == Form::idealL ) {
2344           fprintf(_fp,"->constantL()");
2345         } else {
2346           fprintf(_fp,"->constant()");
2347         }
2348       } else {
2349         assert( _constant_status == LITERAL_OUTPUT, "should have output constant literal in emit_rep_var");
2350         // Constant literal has already been sent to output file, nothing more needed
2351       }
2352     }
2353     else if ( strcmp(rep_var,"$disp") == 0 ) {
2354       Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2355       if( _operand  && _operand_idx==0 && stack_type != Form::none ) {
2356         fprintf(_fp,"->disp(ra_,this,0)");
2357       } else {
2358         fprintf(_fp,"->disp(ra_,this,idx%d)", _operand_idx);
2359       }
2360     }
2361     else if ( strcmp(rep_var,"$label") == 0 ) {
2362       fprintf(_fp,"->label()");
2363     }
2364     else if ( strcmp(rep_var,"$method") == 0 ) {
2365       fprintf(_fp,"->method()");
2366     }
2367     else {
2368       printf("emit_field: %s\n",rep_var);
2369       globalAD->syntax_err(_inst._linenum, "Unknown replacement variable %s in format statement of %s.",
2370                            rep_var, _inst._ident);
2371       assert( false, "UnImplemented()");
2372     }
2373   }
2374 
2375 
emit_rep_var(const char * rep_var)2376   void emit_rep_var(const char *rep_var) {
2377     _processing_noninput = false;
2378     // A replacement variable, originally '$'
2379     if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
2380       if ((_inst._opcode == NULL) || !_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(rep_var) )) {
2381         // Missing opcode
2382         _AD.syntax_err( _inst._linenum,
2383                         "Missing $%s opcode definition in %s, used by encoding %s\n",
2384                         rep_var, _inst._ident, _encoding._name);
2385       }
2386     }
2387     else if (strcmp(rep_var, "constanttablebase") == 0) {
2388       fprintf(_fp, "as_Register(ra_->get_encode(in(mach_constant_base_node_input())))");
2389     }
2390     else if (strcmp(rep_var, "constantoffset") == 0) {
2391       fprintf(_fp, "constant_offset()");
2392     }
2393     else if (strcmp(rep_var, "constantaddress") == 0) {
2394       fprintf(_fp, "InternalAddress(__ code()->consts()->start() + constant_offset())");
2395     }
2396     else {
2397       // Lookup its position in parameter list
2398       int   param_no  = _encoding.rep_var_index(rep_var);
2399       if ( param_no == -1 ) {
2400         _AD.syntax_err( _encoding._linenum,
2401                         "Replacement variable %s not found in enc_class %s.\n",
2402                         rep_var, _encoding._name);
2403       }
2404       // Lookup the corresponding ins_encode parameter
2405       const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
2406 
2407       // Check if instruction's actual parameter is a local name in the instruction
2408       const Form  *local     = _inst._localNames[inst_rep_var];
2409       OpClassForm *opc       = (local != NULL) ? local->is_opclass() : NULL;
2410       // Note: assert removed to allow constant and symbolic parameters
2411       // assert( opc, "replacement variable was not found in local names");
2412       // Lookup the index position iff the replacement variable is a localName
2413       int idx  = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
2414       if( idx != -1 ) {
2415         if (_inst.is_noninput_operand(idx)) {
2416           // This operand isn't a normal input so printing it is done
2417           // specially.
2418           _processing_noninput = true;
2419         } else {
2420           // Output the emit code for this operand
2421           fprintf(_fp,"opnd_array(%d)",idx);
2422         }
2423         assert( _operand == opc->is_operand(),
2424                 "Previous emit $operand does not match current");
2425       }
2426       else if( ADLParser::is_literal_constant(inst_rep_var) ) {
2427         // else check if it is a constant expression
2428         // Removed following assert to allow primitive C types as arguments to encodings
2429         // assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2430         fprintf(_fp,"(%s)", inst_rep_var);
2431         _constant_status = LITERAL_OUTPUT;
2432       }
2433       else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
2434         // else check if "primary", "secondary", "tertiary"
2435         assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2436         if ((_inst._opcode == NULL) || !_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(inst_rep_var) )) {
2437           // Missing opcode
2438           _AD.syntax_err( _inst._linenum,
2439                           "Missing $%s opcode definition in %s\n",
2440                           rep_var, _inst._ident);
2441 
2442         }
2443         _constant_status = LITERAL_OUTPUT;
2444       }
2445       else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
2446         // Instruction provided a literal register name for this parameter
2447         // Check that encoding specifies $$$reg to resolve.as register.
2448         assert( _reg_status == LITERAL_ACCESSED, "Must be processing a literal register parameter");
2449         fprintf(_fp,"(%s_enc)", inst_rep_var);
2450         _reg_status = LITERAL_OUTPUT;
2451       }
2452       else {
2453         // Check for unimplemented functionality before hard failure
2454         assert(opc != NULL && strcmp(opc->_ident, "label") == 0, "Unimplemented Label");
2455         assert(false, "ShouldNotReachHere()");
2456       }
2457       // all done
2458     }
2459   }
2460 
2461 };  // end class DefineEmitState
2462 
2463 
defineSize(FILE * fp,InstructForm & inst)2464 void ArchDesc::defineSize(FILE *fp, InstructForm &inst) {
2465 
2466   //(1)
2467   // Output instruction's emit prototype
2468   fprintf(fp,"uint %sNode::size(PhaseRegAlloc *ra_) const {\n",
2469           inst._ident);
2470 
2471   fprintf(fp, "  assert(VerifyOops || MachNode::size(ra_) <= %s, \"bad fixed size\");\n", inst._size);
2472 
2473   //(2)
2474   // Print the size
2475   fprintf(fp, "  return (VerifyOops ? MachNode::size(ra_) : %s);\n", inst._size);
2476 
2477   // (3) and (4)
2478   fprintf(fp,"}\n\n");
2479 }
2480 
2481 // Emit postalloc expand function.
define_postalloc_expand(FILE * fp,InstructForm & inst)2482 void ArchDesc::define_postalloc_expand(FILE *fp, InstructForm &inst) {
2483   InsEncode *ins_encode = inst._insencode;
2484 
2485   // Output instruction's postalloc_expand prototype.
2486   fprintf(fp, "void  %sNode::postalloc_expand(GrowableArray <Node *> *nodes, PhaseRegAlloc *ra_) {\n",
2487           inst._ident);
2488 
2489   assert((_encode != NULL) && (ins_encode != NULL), "You must define an encode section.");
2490 
2491   // Output each operand's offset into the array of registers.
2492   inst.index_temps(fp, _globalNames);
2493 
2494   // Output variables "unsigned idx_<par_name>", Node *n_<par_name> and "MachOpnd *op_<par_name>"
2495   // for each parameter <par_name> specified in the encoding.
2496   ins_encode->reset();
2497   const char *ec_name = ins_encode->encode_class_iter();
2498   assert(ec_name != NULL, "Postalloc expand must specify an encoding.");
2499 
2500   EncClass *encoding = _encode->encClass(ec_name);
2501   if (encoding == NULL) {
2502     fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2503     abort();
2504   }
2505   if (ins_encode->current_encoding_num_args() != encoding->num_args()) {
2506     globalAD->syntax_err(ins_encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2507                          inst._ident, ins_encode->current_encoding_num_args(),
2508                          ec_name, encoding->num_args());
2509   }
2510 
2511   fprintf(fp, "  // Access to ins and operands for postalloc expand.\n");
2512   const int buflen = 2000;
2513   char idxbuf[buflen]; char *ib = idxbuf; idxbuf[0] = '\0';
2514   char nbuf  [buflen]; char *nb = nbuf;   nbuf[0]   = '\0';
2515   char opbuf [buflen]; char *ob = opbuf;  opbuf[0]  = '\0';
2516 
2517   encoding->_parameter_type.reset();
2518   encoding->_parameter_name.reset();
2519   const char *type = encoding->_parameter_type.iter();
2520   const char *name = encoding->_parameter_name.iter();
2521   int param_no = 0;
2522   for (; (type != NULL) && (name != NULL);
2523        (type = encoding->_parameter_type.iter()), (name = encoding->_parameter_name.iter())) {
2524     const char* arg_name = ins_encode->rep_var_name(inst, param_no);
2525     int idx = inst.operand_position_format(arg_name);
2526     if (strcmp(arg_name, "constanttablebase") == 0) {
2527       ib += sprintf(ib, "  unsigned idx_%-5s = mach_constant_base_node_input(); \t// %s, \t%s\n",
2528                     name, type, arg_name);
2529       nb += sprintf(nb, "  Node    *n_%-7s = lookup(idx_%s);\n", name, name);
2530       // There is no operand for the constanttablebase.
2531     } else if (inst.is_noninput_operand(idx)) {
2532       globalAD->syntax_err(inst._linenum,
2533                            "In %s: you can not pass the non-input %s to a postalloc expand encoding.\n",
2534                            inst._ident, arg_name);
2535     } else {
2536       ib += sprintf(ib, "  unsigned idx_%-5s = idx%d; \t// %s, \t%s\n",
2537                     name, idx, type, arg_name);
2538       nb += sprintf(nb, "  Node    *n_%-7s = lookup(idx_%s);\n", name, name);
2539       ob += sprintf(ob, "  %sOper *op_%s = (%sOper *)opnd_array(%d);\n", type, name, type, idx);
2540     }
2541     param_no++;
2542   }
2543   assert(ib < &idxbuf[buflen-1] && nb < &nbuf[buflen-1] && ob < &opbuf[buflen-1], "buffer overflow");
2544 
2545   fprintf(fp, "%s", idxbuf);
2546   fprintf(fp, "  Node    *n_region  = lookup(0);\n");
2547   fprintf(fp, "%s%s", nbuf, opbuf);
2548   fprintf(fp, "  Compile *C = ra_->C;\n");
2549 
2550   // Output this instruction's encodings.
2551   fprintf(fp, "  {");
2552   const char *ec_code    = NULL;
2553   const char *ec_rep_var = NULL;
2554   assert(encoding == _encode->encClass(ec_name), "");
2555 
2556   DefineEmitState pending(fp, *this, *encoding, *ins_encode, inst);
2557   encoding->_code.reset();
2558   encoding->_rep_vars.reset();
2559   // Process list of user-defined strings,
2560   // and occurrences of replacement variables.
2561   // Replacement Vars are pushed into a list and then output.
2562   while ((ec_code = encoding->_code.iter()) != NULL) {
2563     if (! encoding->_code.is_signal(ec_code)) {
2564       // Emit pending code.
2565       pending.emit();
2566       pending.clear();
2567       // Emit this code section.
2568       fprintf(fp, "%s", ec_code);
2569     } else {
2570       // A replacement variable or one of its subfields.
2571       // Obtain replacement variable from list.
2572       ec_rep_var = encoding->_rep_vars.iter();
2573       pending.add_rep_var(ec_rep_var);
2574     }
2575   }
2576   // Emit pending code.
2577   pending.emit();
2578   pending.clear();
2579   fprintf(fp, "  }\n");
2580 
2581   fprintf(fp, "}\n\n");
2582 
2583   ec_name = ins_encode->encode_class_iter();
2584   assert(ec_name == NULL, "Postalloc expand may only have one encoding.");
2585 }
2586 
2587 // defineEmit -----------------------------------------------------------------
defineEmit(FILE * fp,InstructForm & inst)2588 void ArchDesc::defineEmit(FILE* fp, InstructForm& inst) {
2589   InsEncode* encode = inst._insencode;
2590 
2591   // (1)
2592   // Output instruction's emit prototype
2593   fprintf(fp, "void %sNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const {\n", inst._ident);
2594 
2595   // If user did not define an encode section,
2596   // provide stub that does not generate any machine code.
2597   if( (_encode == NULL) || (encode == NULL) ) {
2598     fprintf(fp, "  // User did not define an encode section.\n");
2599     fprintf(fp, "}\n");
2600     return;
2601   }
2602 
2603   // Save current instruction's starting address (helps with relocation).
2604   fprintf(fp, "  cbuf.set_insts_mark();\n");
2605 
2606   // For MachConstantNodes which are ideal jump nodes, fill the jump table.
2607   if (inst.is_mach_constant() && inst.is_ideal_jump()) {
2608     fprintf(fp, "  ra_->C->constant_table().fill_jump_table(cbuf, (MachConstantNode*) this, _index2label);\n");
2609   }
2610 
2611   // Output each operand's offset into the array of registers.
2612   inst.index_temps(fp, _globalNames);
2613 
2614   // Output this instruction's encodings
2615   const char *ec_name;
2616   bool        user_defined = false;
2617   encode->reset();
2618   while ((ec_name = encode->encode_class_iter()) != NULL) {
2619     fprintf(fp, "  {\n");
2620     // Output user-defined encoding
2621     user_defined           = true;
2622 
2623     const char *ec_code    = NULL;
2624     const char *ec_rep_var = NULL;
2625     EncClass   *encoding   = _encode->encClass(ec_name);
2626     if (encoding == NULL) {
2627       fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2628       abort();
2629     }
2630 
2631     if (encode->current_encoding_num_args() != encoding->num_args()) {
2632       globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2633                            inst._ident, encode->current_encoding_num_args(),
2634                            ec_name, encoding->num_args());
2635     }
2636 
2637     DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2638     encoding->_code.reset();
2639     encoding->_rep_vars.reset();
2640     // Process list of user-defined strings,
2641     // and occurrences of replacement variables.
2642     // Replacement Vars are pushed into a list and then output
2643     while ((ec_code = encoding->_code.iter()) != NULL) {
2644       if (!encoding->_code.is_signal(ec_code)) {
2645         // Emit pending code
2646         pending.emit();
2647         pending.clear();
2648         // Emit this code section
2649         fprintf(fp, "%s", ec_code);
2650       } else {
2651         // A replacement variable or one of its subfields
2652         // Obtain replacement variable from list
2653         ec_rep_var  = encoding->_rep_vars.iter();
2654         pending.add_rep_var(ec_rep_var);
2655       }
2656     }
2657     // Emit pending code
2658     pending.emit();
2659     pending.clear();
2660     fprintf(fp, "  }\n");
2661   } // end while instruction's encodings
2662 
2663   // Check if user stated which encoding to user
2664   if ( user_defined == false ) {
2665     fprintf(fp, "  // User did not define which encode class to use.\n");
2666   }
2667 
2668   // (3) and (4)
2669   fprintf(fp, "}\n\n");
2670 }
2671 
2672 // defineEvalConstant ---------------------------------------------------------
defineEvalConstant(FILE * fp,InstructForm & inst)2673 void ArchDesc::defineEvalConstant(FILE* fp, InstructForm& inst) {
2674   InsEncode* encode = inst._constant;
2675 
2676   // (1)
2677   // Output instruction's emit prototype
2678   fprintf(fp, "void %sNode::eval_constant(Compile* C) {\n", inst._ident);
2679 
2680   // For ideal jump nodes, add a jump-table entry.
2681   if (inst.is_ideal_jump()) {
2682     fprintf(fp, "  _constant = C->constant_table().add_jump_table(this);\n");
2683   }
2684 
2685   // If user did not define an encode section,
2686   // provide stub that does not generate any machine code.
2687   if ((_encode == NULL) || (encode == NULL)) {
2688     fprintf(fp, "  // User did not define an encode section.\n");
2689     fprintf(fp, "}\n");
2690     return;
2691   }
2692 
2693   // Output this instruction's encodings
2694   const char *ec_name;
2695   bool        user_defined = false;
2696   encode->reset();
2697   while ((ec_name = encode->encode_class_iter()) != NULL) {
2698     fprintf(fp, "  {\n");
2699     // Output user-defined encoding
2700     user_defined           = true;
2701 
2702     const char *ec_code    = NULL;
2703     const char *ec_rep_var = NULL;
2704     EncClass   *encoding   = _encode->encClass(ec_name);
2705     if (encoding == NULL) {
2706       fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2707       abort();
2708     }
2709 
2710     if (encode->current_encoding_num_args() != encoding->num_args()) {
2711       globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2712                            inst._ident, encode->current_encoding_num_args(),
2713                            ec_name, encoding->num_args());
2714     }
2715 
2716     DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2717     encoding->_code.reset();
2718     encoding->_rep_vars.reset();
2719     // Process list of user-defined strings,
2720     // and occurrences of replacement variables.
2721     // Replacement Vars are pushed into a list and then output
2722     while ((ec_code = encoding->_code.iter()) != NULL) {
2723       if (!encoding->_code.is_signal(ec_code)) {
2724         // Emit pending code
2725         pending.emit();
2726         pending.clear();
2727         // Emit this code section
2728         fprintf(fp, "%s", ec_code);
2729       } else {
2730         // A replacement variable or one of its subfields
2731         // Obtain replacement variable from list
2732         ec_rep_var  = encoding->_rep_vars.iter();
2733         pending.add_rep_var(ec_rep_var);
2734       }
2735     }
2736     // Emit pending code
2737     pending.emit();
2738     pending.clear();
2739     fprintf(fp, "  }\n");
2740   } // end while instruction's encodings
2741 
2742   // Check if user stated which encoding to user
2743   if (user_defined == false) {
2744     fprintf(fp, "  // User did not define which encode class to use.\n");
2745   }
2746 
2747   // (3) and (4)
2748   fprintf(fp, "}\n");
2749 }
2750 
2751 // ---------------------------------------------------------------------------
2752 //--------Utilities to build MachOper and MachNode derived Classes------------
2753 // ---------------------------------------------------------------------------
2754 
2755 //------------------------------Utilities to build Operand Classes------------
defineIn_RegMask(FILE * fp,FormDict & globals,OperandForm & oper)2756 static void defineIn_RegMask(FILE *fp, FormDict &globals, OperandForm &oper) {
2757   uint num_edges = oper.num_edges(globals);
2758   if( num_edges != 0 ) {
2759     // Method header
2760     fprintf(fp, "const RegMask *%sOper::in_RegMask(int index) const {\n",
2761             oper._ident);
2762 
2763     // Assert that the index is in range.
2764     fprintf(fp, "  assert(0 <= index && index < %d, \"index out of range\");\n",
2765             num_edges);
2766 
2767     // Figure out if all RegMasks are the same.
2768     const char* first_reg_class = oper.in_reg_class(0, globals);
2769     bool all_same = true;
2770     assert(first_reg_class != NULL, "did not find register mask");
2771 
2772     for (uint index = 1; all_same && index < num_edges; index++) {
2773       const char* some_reg_class = oper.in_reg_class(index, globals);
2774       assert(some_reg_class != NULL, "did not find register mask");
2775       if (strcmp(first_reg_class, some_reg_class) != 0) {
2776         all_same = false;
2777       }
2778     }
2779 
2780     if (all_same) {
2781       // Return the sole RegMask.
2782       if (strcmp(first_reg_class, "stack_slots") == 0) {
2783         fprintf(fp,"  return &(Compile::current()->FIRST_STACK_mask());\n");
2784       } else if (strcmp(first_reg_class, "dynamic") == 0) {
2785         fprintf(fp,"  return &RegMask::Empty;\n");
2786       } else {
2787         const char* first_reg_class_to_upper = toUpper(first_reg_class);
2788         fprintf(fp,"  return &%s_mask();\n", first_reg_class_to_upper);
2789         delete[] first_reg_class_to_upper;
2790       }
2791     } else {
2792       // Build a switch statement to return the desired mask.
2793       fprintf(fp,"  switch (index) {\n");
2794 
2795       for (uint index = 0; index < num_edges; index++) {
2796         const char *reg_class = oper.in_reg_class(index, globals);
2797         assert(reg_class != NULL, "did not find register mask");
2798         if( !strcmp(reg_class, "stack_slots") ) {
2799           fprintf(fp, "  case %d: return &(Compile::current()->FIRST_STACK_mask());\n", index);
2800         } else {
2801           const char* reg_class_to_upper = toUpper(reg_class);
2802           fprintf(fp, "  case %d: return &%s_mask();\n", index, reg_class_to_upper);
2803           delete[] reg_class_to_upper;
2804         }
2805       }
2806       fprintf(fp,"  }\n");
2807       fprintf(fp,"  ShouldNotReachHere();\n");
2808       fprintf(fp,"  return NULL;\n");
2809     }
2810 
2811     // Method close
2812     fprintf(fp, "}\n\n");
2813   }
2814 }
2815 
2816 // generate code to create a clone for a class derived from MachOper
2817 //
2818 // (0)  MachOper  *MachOperXOper::clone() const {
2819 // (1)    return new MachXOper( _ccode, _c0, _c1, ..., _cn);
2820 // (2)  }
2821 //
defineClone(FILE * fp,FormDict & globalNames,OperandForm & oper)2822 static void defineClone(FILE *fp, FormDict &globalNames, OperandForm &oper) {
2823   fprintf(fp,"MachOper *%sOper::clone() const {\n", oper._ident);
2824   // Check for constants that need to be copied over
2825   const int  num_consts    = oper.num_consts(globalNames);
2826   const bool is_ideal_bool = oper.is_ideal_bool();
2827   if( (num_consts > 0) ) {
2828     fprintf(fp,"  return new %sOper(", oper._ident);
2829     // generate parameters for constants
2830     int i = 0;
2831     fprintf(fp,"_c%d", i);
2832     for( i = 1; i < num_consts; ++i) {
2833       fprintf(fp,", _c%d", i);
2834     }
2835     // finish line (1)
2836     fprintf(fp,");\n");
2837   }
2838   else {
2839     assert( num_consts == 0, "Currently support zero or one constant per operand clone function");
2840     fprintf(fp,"  return new %sOper();\n", oper._ident);
2841   }
2842   // finish method
2843   fprintf(fp,"}\n");
2844 }
2845 
2846 // Helper functions for bug 4796752, abstracted with minimal modification
2847 // from define_oper_interface()
rep_var_to_operand(const char * encoding,OperandForm & oper,FormDict & globals)2848 OperandForm *rep_var_to_operand(const char *encoding, OperandForm &oper, FormDict &globals) {
2849   OperandForm *op = NULL;
2850   // Check for replacement variable
2851   if( *encoding == '$' ) {
2852     // Replacement variable
2853     const char *rep_var = encoding + 1;
2854     // Lookup replacement variable, rep_var, in operand's component list
2855     const Component *comp = oper._components.search(rep_var);
2856     assert( comp != NULL, "Replacement variable not found in components");
2857     // Lookup operand form for replacement variable's type
2858     const char      *type = comp->_type;
2859     Form            *form = (Form*)globals[type];
2860     assert( form != NULL, "Replacement variable's type not found");
2861     op = form->is_operand();
2862     assert( op, "Attempting to emit a non-register or non-constant");
2863   }
2864 
2865   return op;
2866 }
2867 
rep_var_to_constant_index(const char * encoding,OperandForm & oper,FormDict & globals)2868 int rep_var_to_constant_index(const char *encoding, OperandForm &oper, FormDict &globals) {
2869   int idx = -1;
2870   // Check for replacement variable
2871   if( *encoding == '$' ) {
2872     // Replacement variable
2873     const char *rep_var = encoding + 1;
2874     // Lookup replacement variable, rep_var, in operand's component list
2875     const Component *comp = oper._components.search(rep_var);
2876     assert( comp != NULL, "Replacement variable not found in components");
2877     // Lookup operand form for replacement variable's type
2878     const char      *type = comp->_type;
2879     Form            *form = (Form*)globals[type];
2880     assert( form != NULL, "Replacement variable's type not found");
2881     OperandForm *op = form->is_operand();
2882     assert( op, "Attempting to emit a non-register or non-constant");
2883     // Check that this is a constant and find constant's index:
2884     if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2885       idx  = oper.constant_position(globals, comp);
2886     }
2887   }
2888 
2889   return idx;
2890 }
2891 
is_regI(const char * encoding,OperandForm & oper,FormDict & globals)2892 bool is_regI(const char *encoding, OperandForm &oper, FormDict &globals ) {
2893   bool is_regI = false;
2894 
2895   OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2896   if( op != NULL ) {
2897     // Check that this is a register
2898     if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2899       // Register
2900       const char* ideal  = op->ideal_type(globals);
2901       is_regI = (ideal && (op->ideal_to_Reg_type(ideal) == Form::idealI));
2902     }
2903   }
2904 
2905   return is_regI;
2906 }
2907 
is_conP(const char * encoding,OperandForm & oper,FormDict & globals)2908 bool is_conP(const char *encoding, OperandForm &oper, FormDict &globals ) {
2909   bool is_conP = false;
2910 
2911   OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2912   if( op != NULL ) {
2913     // Check that this is a constant pointer
2914     if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2915       // Constant
2916       Form::DataType dtype = op->is_base_constant(globals);
2917       is_conP = (dtype == Form::idealP);
2918     }
2919   }
2920 
2921   return is_conP;
2922 }
2923 
2924 
2925 // Define a MachOper interface methods
define_oper_interface(FILE * fp,OperandForm & oper,FormDict & globals,const char * name,const char * encoding)2926 void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &globals,
2927                                      const char *name, const char *encoding) {
2928   bool emit_position = false;
2929   int position = -1;
2930 
2931   fprintf(fp,"  virtual int            %s", name);
2932   // Generate access method for base, index, scale, disp, ...
2933   if( (strcmp(name,"base") == 0) || (strcmp(name,"index") == 0) ) {
2934     fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2935     emit_position = true;
2936   } else if ( (strcmp(name,"disp") == 0) ) {
2937     fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2938   } else {
2939     fprintf(fp, "() const {\n");
2940   }
2941 
2942   // Check for hexadecimal value OR replacement variable
2943   if( *encoding == '$' ) {
2944     // Replacement variable
2945     const char *rep_var = encoding + 1;
2946     fprintf(fp,"    // Replacement variable: %s\n", encoding+1);
2947     // Lookup replacement variable, rep_var, in operand's component list
2948     const Component *comp = oper._components.search(rep_var);
2949     assert( comp != NULL, "Replacement variable not found in components");
2950     // Lookup operand form for replacement variable's type
2951     const char      *type = comp->_type;
2952     Form            *form = (Form*)globals[type];
2953     assert( form != NULL, "Replacement variable's type not found");
2954     OperandForm *op = form->is_operand();
2955     assert( op, "Attempting to emit a non-register or non-constant");
2956     // Check that this is a register or a constant and generate code:
2957     if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2958       // Register
2959       int idx_offset = oper.register_position( globals, rep_var);
2960       position = idx_offset;
2961       fprintf(fp,"    return (int)ra_->get_encode(node->in(idx");
2962       if ( idx_offset > 0 ) fprintf(fp,                      "+%d",idx_offset);
2963       fprintf(fp,"));\n");
2964     } else if ( op->ideal_to_sReg_type(op->_ident) != Form::none ) {
2965       // StackSlot for an sReg comes either from input node or from self, when idx==0
2966       fprintf(fp,"    if( idx != 0 ) {\n");
2967       fprintf(fp,"      // Access stack offset (register number) for input operand\n");
2968       fprintf(fp,"      return ra_->reg2offset(ra_->get_reg_first(node->in(idx)));/* sReg */\n");
2969       fprintf(fp,"    }\n");
2970       fprintf(fp,"    // Access stack offset (register number) from myself\n");
2971       fprintf(fp,"    return ra_->reg2offset(ra_->get_reg_first(node));/* sReg */\n");
2972     } else if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2973       // Constant
2974       // Check which constant this name maps to: _c0, _c1, ..., _cn
2975       const int idx = oper.constant_position(globals, comp);
2976       assert( idx != -1, "Constant component not found in operand");
2977       // Output code for this constant, type dependent.
2978       fprintf(fp,"    return (int)" );
2979       oper.access_constant(fp, globals, (uint)idx /* , const_type */);
2980       fprintf(fp,";\n");
2981     } else {
2982       assert( false, "Attempting to emit a non-register or non-constant");
2983     }
2984   }
2985   else if( *encoding == '0' && *(encoding+1) == 'x' ) {
2986     // Hex value
2987     fprintf(fp,"    return %s;\n", encoding);
2988   } else {
2989     globalAD->syntax_err(oper._linenum, "In operand %s: Do not support this encode constant: '%s' for %s.",
2990                          oper._ident, encoding, name);
2991     assert( false, "Do not support octal or decimal encode constants");
2992   }
2993   fprintf(fp,"  }\n");
2994 
2995   if( emit_position && (position != -1) && (oper.num_edges(globals) > 0) ) {
2996     fprintf(fp,"  virtual int            %s_position() const { return %d; }\n", name, position);
2997     MemInterface *mem_interface = oper._interface->is_MemInterface();
2998     const char *base = mem_interface->_base;
2999     const char *disp = mem_interface->_disp;
3000     if( emit_position && (strcmp(name,"base") == 0)
3001         && base != NULL && is_regI(base, oper, globals)
3002         && disp != NULL && is_conP(disp, oper, globals) ) {
3003       // Found a memory access using a constant pointer for a displacement
3004       // and a base register containing an integer offset.
3005       // In this case the base and disp are reversed with respect to what
3006       // is expected by MachNode::get_base_and_disp() and MachNode::adr_type().
3007       // Provide a non-NULL return for disp_as_type() that will allow adr_type()
3008       // to correctly compute the access type for alias analysis.
3009       //
3010       // See BugId 4796752, operand indOffset32X in i486.ad
3011       int idx = rep_var_to_constant_index(disp, oper, globals);
3012       fprintf(fp,"  virtual const TypePtr *disp_as_type() const { return _c%d; }\n", idx);
3013     }
3014   }
3015 }
3016 
3017 //
3018 // Construct the method to copy _idx, inputs and operands to new node.
define_fill_new_machnode(bool used,FILE * fp_cpp)3019 static void define_fill_new_machnode(bool used, FILE *fp_cpp) {
3020   fprintf(fp_cpp, "\n");
3021   fprintf(fp_cpp, "// Copy _idx, inputs and operands to new node\n");
3022   fprintf(fp_cpp, "void MachNode::fill_new_machnode(MachNode* node) const {\n");
3023   if( !used ) {
3024     fprintf(fp_cpp, "  // This architecture does not have cisc or short branch instructions\n");
3025     fprintf(fp_cpp, "  ShouldNotCallThis();\n");
3026     fprintf(fp_cpp, "}\n");
3027   } else {
3028     // New node must use same node index for access through allocator's tables
3029     fprintf(fp_cpp, "  // New node must use same node index\n");
3030     fprintf(fp_cpp, "  node->set_idx( _idx );\n");
3031     // Copy machine-independent inputs
3032     fprintf(fp_cpp, "  // Copy machine-independent inputs\n");
3033     fprintf(fp_cpp, "  for( uint j = 0; j < req(); j++ ) {\n");
3034     fprintf(fp_cpp, "    node->add_req(in(j));\n");
3035     fprintf(fp_cpp, "  }\n");
3036     // Copy machine operands to new MachNode
3037     fprintf(fp_cpp, "  // Copy my operands, except for cisc position\n");
3038     fprintf(fp_cpp, "  int nopnds = num_opnds();\n");
3039     fprintf(fp_cpp, "  assert( node->num_opnds() == (uint)nopnds, \"Must have same number of operands\");\n");
3040     fprintf(fp_cpp, "  MachOper **to = node->_opnds;\n");
3041     fprintf(fp_cpp, "  for( int i = 0; i < nopnds; i++ ) {\n");
3042     fprintf(fp_cpp, "    if( i != cisc_operand() ) \n");
3043     fprintf(fp_cpp, "      to[i] = _opnds[i]->clone();\n");
3044     fprintf(fp_cpp, "  }\n");
3045     fprintf(fp_cpp, "}\n");
3046   }
3047   fprintf(fp_cpp, "\n");
3048 }
3049 
3050 //------------------------------defineClasses----------------------------------
3051 // Define members of MachNode and MachOper classes based on
3052 // operand and instruction lists
defineClasses(FILE * fp)3053 void ArchDesc::defineClasses(FILE *fp) {
3054 
3055   // Define the contents of an array containing the machine register names
3056   defineRegNames(fp, _register);
3057   // Define an array containing the machine register encoding values
3058   defineRegEncodes(fp, _register);
3059   // Generate an enumeration of user-defined register classes
3060   // and a list of register masks, one for each class.
3061   // Only define the RegMask value objects in the expand file.
3062   // Declare each as an extern const RegMask ...; in ad_<arch>.hpp
3063   declare_register_masks(_HPP_file._fp);
3064   // build_register_masks(fp);
3065   build_register_masks(_CPP_EXPAND_file._fp);
3066   // Define the pipe_classes
3067   build_pipe_classes(_CPP_PIPELINE_file._fp);
3068 
3069   // Generate Machine Classes for each operand defined in AD file
3070   fprintf(fp,"\n");
3071   fprintf(fp,"\n");
3072   fprintf(fp,"//------------------Define classes derived from MachOper---------------------\n");
3073   // Iterate through all operands
3074   _operands.reset();
3075   OperandForm *oper;
3076   for( ; (oper = (OperandForm*)_operands.iter()) != NULL; ) {
3077     // Ensure this is a machine-world instruction
3078     if ( oper->ideal_only() ) continue;
3079     // !!!!!
3080     // The declaration of labelOper is in machine-independent file: machnode
3081     if ( strcmp(oper->_ident,"label") == 0 ) {
3082       defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3083 
3084       fprintf(fp,"MachOper  *%sOper::clone() const {\n", oper->_ident);
3085       fprintf(fp,"  return  new %sOper(_label, _block_num);\n", oper->_ident);
3086       fprintf(fp,"}\n");
3087 
3088       fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3089               oper->_ident, machOperEnum(oper->_ident));
3090       // // Currently all XXXOper::Hash() methods are identical (990820)
3091       // define_hash(fp, oper->_ident);
3092       // // Currently all XXXOper::Cmp() methods are identical (990820)
3093       // define_cmp(fp, oper->_ident);
3094       fprintf(fp,"\n");
3095 
3096       continue;
3097     }
3098 
3099     // The declaration of methodOper is in machine-independent file: machnode
3100     if ( strcmp(oper->_ident,"method") == 0 ) {
3101       defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3102 
3103       fprintf(fp,"MachOper  *%sOper::clone() const {\n", oper->_ident);
3104       fprintf(fp,"  return  new %sOper(_method);\n", oper->_ident);
3105       fprintf(fp,"}\n");
3106 
3107       fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3108               oper->_ident, machOperEnum(oper->_ident));
3109       // // Currently all XXXOper::Hash() methods are identical (990820)
3110       // define_hash(fp, oper->_ident);
3111       // // Currently all XXXOper::Cmp() methods are identical (990820)
3112       // define_cmp(fp, oper->_ident);
3113       fprintf(fp,"\n");
3114 
3115       continue;
3116     }
3117 
3118     defineIn_RegMask(fp, _globalNames, *oper);
3119     defineClone(_CPP_CLONE_file._fp, _globalNames, *oper);
3120     // // Currently all XXXOper::Hash() methods are identical (990820)
3121     // define_hash(fp, oper->_ident);
3122     // // Currently all XXXOper::Cmp() methods are identical (990820)
3123     // define_cmp(fp, oper->_ident);
3124 
3125     // side-call to generate output that used to be in the header file:
3126     extern void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_file);
3127     gen_oper_format(_CPP_FORMAT_file._fp, _globalNames, *oper, true);
3128 
3129   }
3130 
3131 
3132   // Generate Machine Classes for each instruction defined in AD file
3133   fprintf(fp,"//------------------Define members for classes derived from MachNode----------\n");
3134   // Output the definitions for out_RegMask() // & kill_RegMask()
3135   _instructions.reset();
3136   InstructForm *instr;
3137   MachNodeForm *machnode;
3138   for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3139     // Ensure this is a machine-world instruction
3140     if ( instr->ideal_only() ) continue;
3141 
3142     defineOut_RegMask(_CPP_MISC_file._fp, instr->_ident, reg_mask(*instr));
3143   }
3144 
3145   bool used = false;
3146   // Output the definitions for expand rules & peephole rules
3147   _instructions.reset();
3148   for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3149     // Ensure this is a machine-world instruction
3150     if ( instr->ideal_only() ) continue;
3151     // If there are multiple defs/kills, or an explicit expand rule, build rule
3152     if( instr->expands() || instr->needs_projections() ||
3153         instr->has_temps() ||
3154         instr->is_mach_constant() ||
3155         instr->needs_constant_base() ||
3156         (instr->_matrule != NULL &&
3157          instr->num_opnds() != instr->num_unique_opnds()) )
3158       defineExpand(_CPP_EXPAND_file._fp, instr);
3159     // If there is an explicit peephole rule, build it
3160     if ( instr->peepholes() )
3161       definePeephole(_CPP_PEEPHOLE_file._fp, instr);
3162 
3163     // Output code to convert to the cisc version, if applicable
3164     used |= instr->define_cisc_version(*this, fp);
3165 
3166     // Output code to convert to the short branch version, if applicable
3167     used |= instr->define_short_branch_methods(*this, fp);
3168   }
3169 
3170   // Construct the method called by cisc_version() to copy inputs and operands.
3171   define_fill_new_machnode(used, fp);
3172 
3173   // Output the definitions for labels
3174   _instructions.reset();
3175   while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3176     // Ensure this is a machine-world instruction
3177     if ( instr->ideal_only() ) continue;
3178 
3179     // Access the fields for operand Label
3180     int label_position = instr->label_position();
3181     if( label_position != -1 ) {
3182       // Set the label
3183       fprintf(fp,"void %sNode::label_set( Label* label, uint block_num ) {\n", instr->_ident);
3184       fprintf(fp,"  labelOper* oper  = (labelOper*)(opnd_array(%d));\n",
3185               label_position );
3186       fprintf(fp,"  oper->_label     = label;\n");
3187       fprintf(fp,"  oper->_block_num = block_num;\n");
3188       fprintf(fp,"}\n");
3189       // Save the label
3190       fprintf(fp,"void %sNode::save_label( Label** label, uint* block_num ) {\n", instr->_ident);
3191       fprintf(fp,"  labelOper* oper  = (labelOper*)(opnd_array(%d));\n",
3192               label_position );
3193       fprintf(fp,"  *label = oper->_label;\n");
3194       fprintf(fp,"  *block_num = oper->_block_num;\n");
3195       fprintf(fp,"}\n");
3196     }
3197   }
3198 
3199   // Output the definitions for methods
3200   _instructions.reset();
3201   while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3202     // Ensure this is a machine-world instruction
3203     if ( instr->ideal_only() ) continue;
3204 
3205     // Access the fields for operand Label
3206     int method_position = instr->method_position();
3207     if( method_position != -1 ) {
3208       // Access the method's address
3209       fprintf(fp,"void %sNode::method_set( intptr_t method ) {\n", instr->_ident);
3210       fprintf(fp,"  ((methodOper*)opnd_array(%d))->_method = method;\n",
3211               method_position );
3212       fprintf(fp,"}\n");
3213       fprintf(fp,"\n");
3214     }
3215   }
3216 
3217   // Define this instruction's number of relocation entries, base is '0'
3218   _instructions.reset();
3219   while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3220     // Output the definition for number of relocation entries
3221     uint reloc_size = instr->reloc(_globalNames);
3222     if ( reloc_size != 0 ) {
3223       fprintf(fp,"int %sNode::reloc() const {\n", instr->_ident);
3224       fprintf(fp,"  return %d;\n", reloc_size);
3225       fprintf(fp,"}\n");
3226       fprintf(fp,"\n");
3227     }
3228   }
3229   fprintf(fp,"\n");
3230 
3231   // Output the definitions for code generation
3232   //
3233   // address  ___Node::emit(address ptr, PhaseRegAlloc *ra_) const {
3234   //   // ...  encoding defined by user
3235   //   return ptr;
3236   // }
3237   //
3238   _instructions.reset();
3239   for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3240     // Ensure this is a machine-world instruction
3241     if ( instr->ideal_only() ) continue;
3242 
3243     if (instr->_insencode) {
3244       if (instr->postalloc_expands()) {
3245         // Don't write this to _CPP_EXPAND_file, as the code generated calls C-code
3246         // from code sections in ad file that is dumped to fp.
3247         define_postalloc_expand(fp, *instr);
3248       } else {
3249         defineEmit(fp, *instr);
3250       }
3251     }
3252     if (instr->is_mach_constant()) defineEvalConstant(fp, *instr);
3253     if (instr->_size)              defineSize        (fp, *instr);
3254 
3255     // side-call to generate output that used to be in the header file:
3256     extern void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &oper, bool for_c_file);
3257     gen_inst_format(_CPP_FORMAT_file._fp, _globalNames, *instr, true);
3258   }
3259 
3260   // Output the definitions for alias analysis
3261   _instructions.reset();
3262   for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3263     // Ensure this is a machine-world instruction
3264     if ( instr->ideal_only() ) continue;
3265 
3266     // Analyze machine instructions that either USE or DEF memory.
3267     int memory_operand = instr->memory_operand(_globalNames);
3268 
3269     if ( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
3270       if( memory_operand == InstructForm::MANY_MEMORY_OPERANDS ) {
3271         fprintf(fp,"const TypePtr *%sNode::adr_type() const { return TypePtr::BOTTOM; }\n", instr->_ident);
3272         fprintf(fp,"const MachOper* %sNode::memory_operand() const { return (MachOper*)-1; }\n", instr->_ident);
3273       } else {
3274         fprintf(fp,"const MachOper* %sNode::memory_operand() const { return _opnds[%d]; }\n", instr->_ident, memory_operand);
3275   }
3276     }
3277   }
3278 
3279   // Get the length of the longest identifier
3280   int max_ident_len = 0;
3281   _instructions.reset();
3282 
3283   for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3284     if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3285       int ident_len = (int)strlen(instr->_ident);
3286       if( max_ident_len < ident_len )
3287         max_ident_len = ident_len;
3288     }
3289   }
3290 
3291   // Emit specifically for Node(s)
3292   fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3293     max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3294   fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return %s; }\n",
3295     max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3296   fprintf(_CPP_PIPELINE_file._fp, "\n");
3297 
3298   fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3299     max_ident_len, "MachNode", _pipeline ? "(&pipeline_class_Unknown_Instructions)" : "NULL");
3300   fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return pipeline_class(); }\n",
3301     max_ident_len, "MachNode");
3302   fprintf(_CPP_PIPELINE_file._fp, "\n");
3303 
3304   // Output the definitions for machine node specific pipeline data
3305   _machnodes.reset();
3306 
3307   if (_pipeline != NULL) {
3308     for ( ; (machnode = (MachNodeForm*)_machnodes.iter()) != NULL; ) {
3309       fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3310               machnode->_ident, ((class PipeClassForm *)_pipeline->_classdict[machnode->_machnode_pipe])->_num);
3311     }
3312   }
3313 
3314   fprintf(_CPP_PIPELINE_file._fp, "\n");
3315 
3316   // Output the definitions for instruction pipeline static data references
3317   _instructions.reset();
3318 
3319   if (_pipeline != NULL) {
3320     for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3321       if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3322         fprintf(_CPP_PIPELINE_file._fp, "\n");
3323         fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline_class() { return (&pipeline_class_%03d); }\n",
3324                 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3325         fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3326                 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3327       }
3328     }
3329   }
3330 }
3331 
3332 
3333 // -------------------------------- maps ------------------------------------
3334 
3335 // Information needed to generate the ReduceOp mapping for the DFA
3336 class OutputReduceOp : public OutputMap {
3337 public:
OutputReduceOp(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3338   OutputReduceOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3339     : OutputMap(hpp, cpp, globals, AD, "reduceOp") {};
3340 
declaration()3341   void declaration() { fprintf(_hpp, "extern const int   reduceOp[];\n"); }
definition()3342   void definition()  { fprintf(_cpp, "const        int   reduceOp[] = {\n"); }
closing()3343   void closing()     { fprintf(_cpp, "  0 // no trailing comma\n");
3344                        OutputMap::closing();
3345   }
map(OpClassForm & opc)3346   void map(OpClassForm &opc)  {
3347     const char *reduce = opc._ident;
3348     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3349     else          fprintf(_cpp, "  0");
3350   }
map(OperandForm & oper)3351   void map(OperandForm &oper) {
3352     // Most operands without match rules, e.g.  eFlagsReg, do not have a result operand
3353     const char *reduce = (oper._matrule ? oper.reduce_result() : NULL);
3354     // operand stackSlot does not have a match rule, but produces a stackSlot
3355     if( oper.is_user_name_for_sReg() != Form::none ) reduce = oper.reduce_result();
3356     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3357     else          fprintf(_cpp, "  0");
3358   }
map(InstructForm & inst)3359   void map(InstructForm &inst) {
3360     const char *reduce = (inst._matrule ? inst.reduce_result() : NULL);
3361     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3362     else          fprintf(_cpp, "  0");
3363   }
map(char * reduce)3364   void map(char         *reduce) {
3365     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3366     else          fprintf(_cpp, "  0");
3367   }
3368 };
3369 
3370 // Information needed to generate the LeftOp mapping for the DFA
3371 class OutputLeftOp : public OutputMap {
3372 public:
OutputLeftOp(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3373   OutputLeftOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3374     : OutputMap(hpp, cpp, globals, AD, "leftOp") {};
3375 
declaration()3376   void declaration() { fprintf(_hpp, "extern const int   leftOp[];\n"); }
definition()3377   void definition()  { fprintf(_cpp, "const        int   leftOp[] = {\n"); }
closing()3378   void closing()     { fprintf(_cpp, "  0 // no trailing comma\n");
3379                        OutputMap::closing();
3380   }
map(OpClassForm & opc)3381   void map(OpClassForm &opc)  { fprintf(_cpp, "  0"); }
map(OperandForm & oper)3382   void map(OperandForm &oper) {
3383     const char *reduce = oper.reduce_left(_globals);
3384     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3385     else          fprintf(_cpp, "  0");
3386   }
map(char * name)3387   void map(char        *name) {
3388     const char *reduce = _AD.reduceLeft(name);
3389     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3390     else          fprintf(_cpp, "  0");
3391   }
map(InstructForm & inst)3392   void map(InstructForm &inst) {
3393     const char *reduce = inst.reduce_left(_globals);
3394     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3395     else          fprintf(_cpp, "  0");
3396   }
3397 };
3398 
3399 
3400 // Information needed to generate the RightOp mapping for the DFA
3401 class OutputRightOp : public OutputMap {
3402 public:
OutputRightOp(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3403   OutputRightOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3404     : OutputMap(hpp, cpp, globals, AD, "rightOp") {};
3405 
declaration()3406   void declaration() { fprintf(_hpp, "extern const int   rightOp[];\n"); }
definition()3407   void definition()  { fprintf(_cpp, "const        int   rightOp[] = {\n"); }
closing()3408   void closing()     { fprintf(_cpp, "  0 // no trailing comma\n");
3409                        OutputMap::closing();
3410   }
map(OpClassForm & opc)3411   void map(OpClassForm &opc)  { fprintf(_cpp, "  0"); }
map(OperandForm & oper)3412   void map(OperandForm &oper) {
3413     const char *reduce = oper.reduce_right(_globals);
3414     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3415     else          fprintf(_cpp, "  0");
3416   }
map(char * name)3417   void map(char        *name) {
3418     const char *reduce = _AD.reduceRight(name);
3419     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3420     else          fprintf(_cpp, "  0");
3421   }
map(InstructForm & inst)3422   void map(InstructForm &inst) {
3423     const char *reduce = inst.reduce_right(_globals);
3424     if( reduce )  fprintf(_cpp, "  %s_rule", reduce);
3425     else          fprintf(_cpp, "  0");
3426   }
3427 };
3428 
3429 
3430 // Information needed to generate the Rule names for the DFA
3431 class OutputRuleName : public OutputMap {
3432 public:
OutputRuleName(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3433   OutputRuleName(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3434     : OutputMap(hpp, cpp, globals, AD, "ruleName") {};
3435 
declaration()3436   void declaration() { fprintf(_hpp, "extern const char *ruleName[];\n"); }
definition()3437   void definition()  { fprintf(_cpp, "const char        *ruleName[] = {\n"); }
closing()3438   void closing()     { fprintf(_cpp, "  \"invalid rule name\" // no trailing comma\n");
3439                        OutputMap::closing();
3440   }
map(OpClassForm & opc)3441   void map(OpClassForm &opc)  { fprintf(_cpp, "  \"%s\"", _AD.machOperEnum(opc._ident) ); }
map(OperandForm & oper)3442   void map(OperandForm &oper) { fprintf(_cpp, "  \"%s\"", _AD.machOperEnum(oper._ident) ); }
map(char * name)3443   void map(char        *name) { fprintf(_cpp, "  \"%s\"", name ? name : "0"); }
map(InstructForm & inst)3444   void map(InstructForm &inst){ fprintf(_cpp, "  \"%s\"", inst._ident ? inst._ident : "0"); }
3445 };
3446 
3447 
3448 // Information needed to generate the swallowed mapping for the DFA
3449 class OutputSwallowed : public OutputMap {
3450 public:
OutputSwallowed(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3451   OutputSwallowed(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3452     : OutputMap(hpp, cpp, globals, AD, "swallowed") {};
3453 
declaration()3454   void declaration() { fprintf(_hpp, "extern const bool  swallowed[];\n"); }
definition()3455   void definition()  { fprintf(_cpp, "const        bool  swallowed[] = {\n"); }
closing()3456   void closing()     { fprintf(_cpp, "  false // no trailing comma\n");
3457                        OutputMap::closing();
3458   }
map(OperandForm & oper)3459   void map(OperandForm &oper) { // Generate the entry for this opcode
3460     const char *swallowed = oper.swallowed(_globals) ? "true" : "false";
3461     fprintf(_cpp, "  %s", swallowed);
3462   }
map(OpClassForm & opc)3463   void map(OpClassForm &opc)  { fprintf(_cpp, "  false"); }
map(char * name)3464   void map(char        *name) { fprintf(_cpp, "  false"); }
map(InstructForm & inst)3465   void map(InstructForm &inst){ fprintf(_cpp, "  false"); }
3466 };
3467 
3468 
3469 // Information needed to generate the decision array for instruction chain rule
3470 class OutputInstChainRule : public OutputMap {
3471 public:
OutputInstChainRule(FILE * hpp,FILE * cpp,FormDict & globals,ArchDesc & AD)3472   OutputInstChainRule(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3473     : OutputMap(hpp, cpp, globals, AD, "instruction_chain_rule") {};
3474 
declaration()3475   void declaration() { fprintf(_hpp, "extern const bool  instruction_chain_rule[];\n"); }
definition()3476   void definition()  { fprintf(_cpp, "const        bool  instruction_chain_rule[] = {\n"); }
closing()3477   void closing()     { fprintf(_cpp, "  false // no trailing comma\n");
3478                        OutputMap::closing();
3479   }
map(OpClassForm & opc)3480   void map(OpClassForm &opc)   { fprintf(_cpp, "  false"); }
map(OperandForm & oper)3481   void map(OperandForm &oper)  { fprintf(_cpp, "  false"); }
map(char * name)3482   void map(char        *name)  { fprintf(_cpp, "  false"); }
map(InstructForm & inst)3483   void map(InstructForm &inst) { // Check for simple chain rule
3484     const char *chain = inst.is_simple_chain_rule(_globals) ? "true" : "false";
3485     fprintf(_cpp, "  %s", chain);
3486   }
3487 };
3488 
3489 
3490 //---------------------------build_map------------------------------------
3491 // Build  mapping from enumeration for densely packed operands
3492 // TO result and child types.
build_map(OutputMap & map)3493 void ArchDesc::build_map(OutputMap &map) {
3494   FILE         *fp_hpp = map.decl_file();
3495   FILE         *fp_cpp = map.def_file();
3496   int           idx    = 0;
3497   OperandForm  *op;
3498   OpClassForm  *opc;
3499   InstructForm *inst;
3500 
3501   // Construct this mapping
3502   map.declaration();
3503   fprintf(fp_cpp,"\n");
3504   map.definition();
3505 
3506   // Output the mapping for operands
3507   map.record_position(OutputMap::BEGIN_OPERANDS, idx );
3508   _operands.reset();
3509   for(; (op = (OperandForm*)_operands.iter()) != NULL; ) {
3510     // Ensure this is a machine-world instruction
3511     if ( op->ideal_only() )  continue;
3512 
3513     // Generate the entry for this opcode
3514     fprintf(fp_cpp, "  /* %4d */", idx); map.map(*op); fprintf(fp_cpp, ",\n");
3515     ++idx;
3516   };
3517   fprintf(fp_cpp, "  // last operand\n");
3518 
3519   // Place all user-defined operand classes into the mapping
3520   map.record_position(OutputMap::BEGIN_OPCLASSES, idx );
3521   _opclass.reset();
3522   for(; (opc = (OpClassForm*)_opclass.iter()) != NULL; ) {
3523     fprintf(fp_cpp, "  /* %4d */", idx); map.map(*opc); fprintf(fp_cpp, ",\n");
3524     ++idx;
3525   };
3526   fprintf(fp_cpp, "  // last operand class\n");
3527 
3528   // Place all internally defined operands into the mapping
3529   map.record_position(OutputMap::BEGIN_INTERNALS, idx );
3530   _internalOpNames.reset();
3531   char *name = NULL;
3532   for(; (name = (char *)_internalOpNames.iter()) != NULL; ) {
3533     fprintf(fp_cpp, "  /* %4d */", idx); map.map(name); fprintf(fp_cpp, ",\n");
3534     ++idx;
3535   };
3536   fprintf(fp_cpp, "  // last internally defined operand\n");
3537 
3538   // Place all user-defined instructions into the mapping
3539   if( map.do_instructions() ) {
3540     map.record_position(OutputMap::BEGIN_INSTRUCTIONS, idx );
3541     // Output all simple instruction chain rules first
3542     map.record_position(OutputMap::BEGIN_INST_CHAIN_RULES, idx );
3543     {
3544       _instructions.reset();
3545       for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3546         // Ensure this is a machine-world instruction
3547         if ( inst->ideal_only() )  continue;
3548         if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3549         if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3550 
3551         fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3552         ++idx;
3553       };
3554       map.record_position(OutputMap::BEGIN_REMATERIALIZE, idx );
3555       _instructions.reset();
3556       for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3557         // Ensure this is a machine-world instruction
3558         if ( inst->ideal_only() )  continue;
3559         if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3560         if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3561 
3562         fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3563         ++idx;
3564       };
3565       map.record_position(OutputMap::END_INST_CHAIN_RULES, idx );
3566     }
3567     // Output all instructions that are NOT simple chain rules
3568     {
3569       _instructions.reset();
3570       for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3571         // Ensure this is a machine-world instruction
3572         if ( inst->ideal_only() )  continue;
3573         if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3574         if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3575 
3576         fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3577         ++idx;
3578       };
3579       map.record_position(OutputMap::END_REMATERIALIZE, idx );
3580       _instructions.reset();
3581       for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3582         // Ensure this is a machine-world instruction
3583         if ( inst->ideal_only() )  continue;
3584         if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3585         if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3586 
3587         fprintf(fp_cpp, "  /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3588         ++idx;
3589       };
3590     }
3591     fprintf(fp_cpp, "  // last instruction\n");
3592     map.record_position(OutputMap::END_INSTRUCTIONS, idx );
3593   }
3594   // Finish defining table
3595   map.closing();
3596 };
3597 
3598 
3599 // Helper function for buildReduceMaps
reg_save_policy(const char * calling_convention)3600 char reg_save_policy(const char *calling_convention) {
3601   char callconv;
3602 
3603   if      (!strcmp(calling_convention, "NS"))  callconv = 'N';
3604   else if (!strcmp(calling_convention, "SOE")) callconv = 'E';
3605   else if (!strcmp(calling_convention, "SOC")) callconv = 'C';
3606   else if (!strcmp(calling_convention, "AS"))  callconv = 'A';
3607   else                                         callconv = 'Z';
3608 
3609   return callconv;
3610 }
3611 
generate_needs_clone_jvms(FILE * fp_cpp)3612 void ArchDesc::generate_needs_clone_jvms(FILE *fp_cpp) {
3613   fprintf(fp_cpp, "bool Compile::needs_clone_jvms() { return %s; }\n\n",
3614           _needs_clone_jvms ? "true" : "false");
3615 }
3616 
3617 //---------------------------generate_assertion_checks-------------------
generate_adlc_verification(FILE * fp_cpp)3618 void ArchDesc::generate_adlc_verification(FILE *fp_cpp) {
3619   fprintf(fp_cpp, "\n");
3620 
3621   fprintf(fp_cpp, "#ifndef PRODUCT\n");
3622   fprintf(fp_cpp, "void Compile::adlc_verification() {\n");
3623   globalDefs().print_asserts(fp_cpp);
3624   fprintf(fp_cpp, "}\n");
3625   fprintf(fp_cpp, "#endif\n");
3626   fprintf(fp_cpp, "\n");
3627 }
3628 
3629 //---------------------------addSourceBlocks-----------------------------
addSourceBlocks(FILE * fp_cpp)3630 void ArchDesc::addSourceBlocks(FILE *fp_cpp) {
3631   if (_source.count() > 0)
3632     _source.output(fp_cpp);
3633 
3634   generate_adlc_verification(fp_cpp);
3635 }
3636 //---------------------------addHeaderBlocks-----------------------------
addHeaderBlocks(FILE * fp_hpp)3637 void ArchDesc::addHeaderBlocks(FILE *fp_hpp) {
3638   if (_header.count() > 0)
3639     _header.output(fp_hpp);
3640 }
3641 //-------------------------addPreHeaderBlocks----------------------------
addPreHeaderBlocks(FILE * fp_hpp)3642 void ArchDesc::addPreHeaderBlocks(FILE *fp_hpp) {
3643   // Output #defines from definition block
3644   globalDefs().print_defines(fp_hpp);
3645 
3646   if (_pre_header.count() > 0)
3647     _pre_header.output(fp_hpp);
3648 }
3649 
3650 //---------------------------buildReduceMaps-----------------------------
3651 // Build  mapping from enumeration for densely packed operands
3652 // TO result and child types.
buildReduceMaps(FILE * fp_hpp,FILE * fp_cpp)3653 void ArchDesc::buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp) {
3654   RegDef       *rdef;
3655   RegDef       *next;
3656 
3657   // The emit bodies currently require functions defined in the source block.
3658 
3659   // Build external declarations for mappings
3660   fprintf(fp_hpp, "\n");
3661   fprintf(fp_hpp, "extern const char  register_save_policy[];\n");
3662   fprintf(fp_hpp, "extern const char  c_reg_save_policy[];\n");
3663   fprintf(fp_hpp, "extern const int   register_save_type[];\n");
3664   fprintf(fp_hpp, "\n");
3665 
3666   // Construct Save-Policy array
3667   fprintf(fp_cpp, "// Map from machine-independent register number to register_save_policy\n");
3668   fprintf(fp_cpp, "const        char register_save_policy[] = {\n");
3669   _register->reset_RegDefs();
3670   for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3671     next              = _register->iter_RegDefs();
3672     char policy       = reg_save_policy(rdef->_callconv);
3673     const char *comma = (next != NULL) ? "," : " // no trailing comma";
3674     fprintf(fp_cpp, "  '%c'%s // %s\n", policy, comma, rdef->_regname);
3675   }
3676   fprintf(fp_cpp, "};\n\n");
3677 
3678   // Construct Native Save-Policy array
3679   fprintf(fp_cpp, "// Map from machine-independent register number to c_reg_save_policy\n");
3680   fprintf(fp_cpp, "const        char c_reg_save_policy[] = {\n");
3681   _register->reset_RegDefs();
3682   for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3683     next        = _register->iter_RegDefs();
3684     char policy = reg_save_policy(rdef->_c_conv);
3685     const char *comma = (next != NULL) ? "," : " // no trailing comma";
3686     fprintf(fp_cpp, "  '%c'%s // %s\n", policy, comma, rdef->_regname);
3687   }
3688   fprintf(fp_cpp, "};\n\n");
3689 
3690   // Construct Register Save Type array
3691   fprintf(fp_cpp, "// Map from machine-independent register number to register_save_type\n");
3692   fprintf(fp_cpp, "const        int register_save_type[] = {\n");
3693   _register->reset_RegDefs();
3694   for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3695     next = _register->iter_RegDefs();
3696     const char *comma = (next != NULL) ? "," : " // no trailing comma";
3697     fprintf(fp_cpp, "  %s%s\n", rdef->_idealtype, comma);
3698   }
3699   fprintf(fp_cpp, "};\n\n");
3700 
3701   // Construct the table for reduceOp
3702   OutputReduceOp output_reduce_op(fp_hpp, fp_cpp, _globalNames, *this);
3703   build_map(output_reduce_op);
3704   // Construct the table for leftOp
3705   OutputLeftOp output_left_op(fp_hpp, fp_cpp, _globalNames, *this);
3706   build_map(output_left_op);
3707   // Construct the table for rightOp
3708   OutputRightOp output_right_op(fp_hpp, fp_cpp, _globalNames, *this);
3709   build_map(output_right_op);
3710   // Construct the table of rule names
3711   OutputRuleName output_rule_name(fp_hpp, fp_cpp, _globalNames, *this);
3712   build_map(output_rule_name);
3713   // Construct the boolean table for subsumed operands
3714   OutputSwallowed output_swallowed(fp_hpp, fp_cpp, _globalNames, *this);
3715   build_map(output_swallowed);
3716   // // // Preserve in case we decide to use this table instead of another
3717   //// Construct the boolean table for instruction chain rules
3718   //OutputInstChainRule output_inst_chain(fp_hpp, fp_cpp, _globalNames, *this);
3719   //build_map(output_inst_chain);
3720 
3721 }
3722 
3723 
3724 //---------------------------buildMachOperGenerator---------------------------
3725 
3726 // Recurse through match tree, building path through corresponding state tree,
3727 // Until we reach the constant we are looking for.
path_to_constant(FILE * fp,FormDict & globals,MatchNode * mnode,uint idx)3728 static void path_to_constant(FILE *fp, FormDict &globals,
3729                              MatchNode *mnode, uint idx) {
3730   if ( ! mnode) return;
3731 
3732   unsigned    position = 0;
3733   const char *result   = NULL;
3734   const char *name     = NULL;
3735   const char *optype   = NULL;
3736 
3737   // Base Case: access constant in ideal node linked to current state node
3738   // Each type of constant has its own access function
3739   if ( (mnode->_lChild == NULL) && (mnode->_rChild == NULL)
3740        && mnode->base_operand(position, globals, result, name, optype) ) {
3741     if (         strcmp(optype,"ConI") == 0 ) {
3742       fprintf(fp, "_leaf->get_int()");
3743     } else if ( (strcmp(optype,"ConP") == 0) ) {
3744       fprintf(fp, "_leaf->bottom_type()->is_ptr()");
3745     } else if ( (strcmp(optype,"ConN") == 0) ) {
3746       fprintf(fp, "_leaf->bottom_type()->is_narrowoop()");
3747     } else if ( (strcmp(optype,"ConNKlass") == 0) ) {
3748       fprintf(fp, "_leaf->bottom_type()->is_narrowklass()");
3749     } else if ( (strcmp(optype,"ConF") == 0) ) {
3750       fprintf(fp, "_leaf->getf()");
3751     } else if ( (strcmp(optype,"ConD") == 0) ) {
3752       fprintf(fp, "_leaf->getd()");
3753     } else if ( (strcmp(optype,"ConL") == 0) ) {
3754       fprintf(fp, "_leaf->get_long()");
3755     } else if ( (strcmp(optype,"Con")==0) ) {
3756       // !!!!! - Update if adding a machine-independent constant type
3757       fprintf(fp, "_leaf->get_int()");
3758       assert( false, "Unsupported constant type, pointer or indefinite");
3759     } else if ( (strcmp(optype,"Bool") == 0) ) {
3760       fprintf(fp, "_leaf->as_Bool()->_test._test");
3761     } else {
3762       assert( false, "Unsupported constant type");
3763     }
3764     return;
3765   }
3766 
3767   // If constant is in left child, build path and recurse
3768   uint lConsts = (mnode->_lChild) ? (mnode->_lChild->num_consts(globals) ) : 0;
3769   uint rConsts = (mnode->_rChild) ? (mnode->_rChild->num_consts(globals) ) : 0;
3770   if ( (mnode->_lChild) && (lConsts > idx) ) {
3771     fprintf(fp, "_kids[0]->");
3772     path_to_constant(fp, globals, mnode->_lChild, idx);
3773     return;
3774   }
3775   // If constant is in right child, build path and recurse
3776   if ( (mnode->_rChild) && (rConsts > (idx - lConsts) ) ) {
3777     idx = idx - lConsts;
3778     fprintf(fp, "_kids[1]->");
3779     path_to_constant(fp, globals, mnode->_rChild, idx);
3780     return;
3781   }
3782   assert( false, "ShouldNotReachHere()");
3783 }
3784 
3785 // Generate code that is executed when generating a specific Machine Operand
genMachOperCase(FILE * fp,FormDict & globalNames,ArchDesc & AD,OperandForm & op)3786 static void genMachOperCase(FILE *fp, FormDict &globalNames, ArchDesc &AD,
3787                             OperandForm &op) {
3788   const char *opName         = op._ident;
3789   const char *opEnumName     = AD.machOperEnum(opName);
3790   uint        num_consts     = op.num_consts(globalNames);
3791 
3792   // Generate the case statement for this opcode
3793   fprintf(fp, "  case %s:", opEnumName);
3794   fprintf(fp, "\n    return new %sOper(", opName);
3795   // Access parameters for constructor from the stat object
3796   //
3797   // Build access to condition code value
3798   if ( (num_consts > 0) ) {
3799     uint i = 0;
3800     path_to_constant(fp, globalNames, op._matrule, i);
3801     for ( i = 1; i < num_consts; ++i ) {
3802       fprintf(fp, ", ");
3803       path_to_constant(fp, globalNames, op._matrule, i);
3804     }
3805   }
3806   fprintf(fp, " );\n");
3807 }
3808 
3809 
3810 // Build switch to invoke "new" MachNode or MachOper
buildMachOperGenerator(FILE * fp_cpp)3811 void ArchDesc::buildMachOperGenerator(FILE *fp_cpp) {
3812   int idx = 0;
3813 
3814   // Build switch to invoke 'new' for a specific MachOper
3815   fprintf(fp_cpp, "\n");
3816   fprintf(fp_cpp, "\n");
3817   fprintf(fp_cpp,
3818           "//------------------------- MachOper Generator ---------------\n");
3819   fprintf(fp_cpp,
3820           "// A switch statement on the dense-packed user-defined type system\n"
3821           "// that invokes 'new' on the corresponding class constructor.\n");
3822   fprintf(fp_cpp, "\n");
3823   fprintf(fp_cpp, "MachOper *State::MachOperGenerator");
3824   fprintf(fp_cpp, "(int opcode)");
3825   fprintf(fp_cpp, "{\n");
3826   fprintf(fp_cpp, "\n");
3827   fprintf(fp_cpp, "  switch(opcode) {\n");
3828 
3829   // Place all user-defined operands into the mapping
3830   _operands.reset();
3831   int  opIndex = 0;
3832   OperandForm *op;
3833   for( ; (op =  (OperandForm*)_operands.iter()) != NULL; ) {
3834     // Ensure this is a machine-world instruction
3835     if ( op->ideal_only() )  continue;
3836 
3837     genMachOperCase(fp_cpp, _globalNames, *this, *op);
3838   };
3839 
3840   // Do not iterate over operand classes for the  operand generator!!!
3841 
3842   // Place all internal operands into the mapping
3843   _internalOpNames.reset();
3844   const char *iopn;
3845   for( ; (iopn =  _internalOpNames.iter()) != NULL; ) {
3846     const char *opEnumName = machOperEnum(iopn);
3847     // Generate the case statement for this opcode
3848     fprintf(fp_cpp, "  case %s:", opEnumName);
3849     fprintf(fp_cpp, "    return NULL;\n");
3850   };
3851 
3852   // Generate the default case for switch(opcode)
3853   fprintf(fp_cpp, "  \n");
3854   fprintf(fp_cpp, "  default:\n");
3855   fprintf(fp_cpp, "    fprintf(stderr, \"Default MachOper Generator invoked for: \\n\");\n");
3856   fprintf(fp_cpp, "    fprintf(stderr, \"   opcode = %cd\\n\", opcode);\n", '%');
3857   fprintf(fp_cpp, "    break;\n");
3858   fprintf(fp_cpp, "  }\n");
3859 
3860   // Generate the closing for method Matcher::MachOperGenerator
3861   fprintf(fp_cpp, "  return NULL;\n");
3862   fprintf(fp_cpp, "};\n");
3863 }
3864 
3865 
3866 //---------------------------buildMachNode-------------------------------------
3867 // Build a new MachNode, for MachNodeGenerator or cisc-spilling
buildMachNode(FILE * fp_cpp,InstructForm * inst,const char * indent)3868 void ArchDesc::buildMachNode(FILE *fp_cpp, InstructForm *inst, const char *indent) {
3869   const char *opType  = NULL;
3870   const char *opClass = inst->_ident;
3871 
3872   // Create the MachNode object
3873   fprintf(fp_cpp, "%s %sNode *node = new %sNode();\n",indent, opClass,opClass);
3874 
3875   if ( (inst->num_post_match_opnds() != 0) ) {
3876     // Instruction that contains operands which are not in match rule.
3877     //
3878     // Check if the first post-match component may be an interesting def
3879     bool           dont_care = false;
3880     ComponentList &comp_list = inst->_components;
3881     Component     *comp      = NULL;
3882     comp_list.reset();
3883     if ( comp_list.match_iter() != NULL )    dont_care = true;
3884 
3885     // Insert operands that are not in match-rule.
3886     // Only insert a DEF if the do_care flag is set
3887     comp_list.reset();
3888     while ( (comp = comp_list.post_match_iter()) ) {
3889       // Check if we don't care about DEFs or KILLs that are not USEs
3890       if ( dont_care && (! comp->isa(Component::USE)) ) {
3891         continue;
3892       }
3893       dont_care = true;
3894       // For each operand not in the match rule, call MachOperGenerator
3895       // with the enum for the opcode that needs to be built.
3896       ComponentList clist = inst->_components;
3897       int         index  = clist.operand_position(comp->_name, comp->_usedef, inst);
3898       const char *opcode = machOperEnum(comp->_type);
3899       fprintf(fp_cpp, "%s node->set_opnd_array(%d, ", indent, index);
3900       fprintf(fp_cpp, "MachOperGenerator(%s));\n", opcode);
3901       }
3902   }
3903   else if ( inst->is_chain_of_constant(_globalNames, opType) ) {
3904     // An instruction that chains from a constant!
3905     // In this case, we need to subsume the constant into the node
3906     // at operand position, oper_input_base().
3907     //
3908     // Fill in the constant
3909     fprintf(fp_cpp, "%s node->_opnd_array[%d] = ", indent,
3910             inst->oper_input_base(_globalNames));
3911     // #####
3912     // Check for multiple constants and then fill them in.
3913     // Just like MachOperGenerator
3914     const char *opName = inst->_matrule->_rChild->_opType;
3915     fprintf(fp_cpp, "new %sOper(", opName);
3916     // Grab operand form
3917     OperandForm *op = (_globalNames[opName])->is_operand();
3918     // Look up the number of constants
3919     uint num_consts = op->num_consts(_globalNames);
3920     if ( (num_consts > 0) ) {
3921       uint i = 0;
3922       path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3923       for ( i = 1; i < num_consts; ++i ) {
3924         fprintf(fp_cpp, ", ");
3925         path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3926       }
3927     }
3928     fprintf(fp_cpp, " );\n");
3929     // #####
3930   }
3931 
3932   // Fill in the bottom_type where requested
3933   if (inst->captures_bottom_type(_globalNames)) {
3934     if (strncmp("MachCall", inst->mach_base_class(_globalNames), strlen("MachCall"))) {
3935       fprintf(fp_cpp, "%s node->_bottom_type = _leaf->bottom_type();\n", indent);
3936     }
3937   }
3938   if( inst->is_ideal_if() ) {
3939     fprintf(fp_cpp, "%s node->_prob = _leaf->as_If()->_prob;\n", indent);
3940     fprintf(fp_cpp, "%s node->_fcnt = _leaf->as_If()->_fcnt;\n", indent);
3941   }
3942   if (inst->is_ideal_halt()) {
3943     fprintf(fp_cpp, "%s node->_halt_reason = _leaf->as_Halt()->_halt_reason;\n", indent);
3944   }
3945   if (inst->is_ideal_jump()) {
3946     fprintf(fp_cpp, "%s node->_probs = _leaf->as_Jump()->_probs;\n", indent);
3947   }
3948   if( inst->is_ideal_fastlock() ) {
3949     fprintf(fp_cpp, "%s node->_counters = _leaf->as_FastLock()->counters();\n", indent);
3950     fprintf(fp_cpp, "%s node->_rtm_counters = _leaf->as_FastLock()->rtm_counters();\n", indent);
3951     fprintf(fp_cpp, "%s node->_stack_rtm_counters = _leaf->as_FastLock()->stack_rtm_counters();\n", indent);
3952   }
3953 
3954 }
3955 
3956 //---------------------------declare_cisc_version------------------------------
3957 // Build CISC version of this instruction
declare_cisc_version(ArchDesc & AD,FILE * fp_hpp)3958 void InstructForm::declare_cisc_version(ArchDesc &AD, FILE *fp_hpp) {
3959   if( AD.can_cisc_spill() ) {
3960     InstructForm *inst_cisc = cisc_spill_alternate();
3961     if (inst_cisc != NULL) {
3962       fprintf(fp_hpp, "  virtual int            cisc_operand() const { return %d; }\n", cisc_spill_operand());
3963       fprintf(fp_hpp, "  virtual MachNode      *cisc_version(int offset);\n");
3964       fprintf(fp_hpp, "  virtual void           use_cisc_RegMask();\n");
3965       fprintf(fp_hpp, "  virtual const RegMask *cisc_RegMask() const { return _cisc_RegMask; }\n");
3966     }
3967   }
3968 }
3969 
3970 //---------------------------define_cisc_version-------------------------------
3971 // Build CISC version of this instruction
define_cisc_version(ArchDesc & AD,FILE * fp_cpp)3972 bool InstructForm::define_cisc_version(ArchDesc &AD, FILE *fp_cpp) {
3973   InstructForm *inst_cisc = this->cisc_spill_alternate();
3974   if( AD.can_cisc_spill() && (inst_cisc != NULL) ) {
3975     const char   *name      = inst_cisc->_ident;
3976     assert( inst_cisc->num_opnds() == this->num_opnds(), "Must have same number of operands");
3977     OperandForm *cisc_oper = AD.cisc_spill_operand();
3978     assert( cisc_oper != NULL, "insanity check");
3979     const char *cisc_oper_name  = cisc_oper->_ident;
3980     assert( cisc_oper_name != NULL, "insanity check");
3981     //
3982     // Set the correct reg_mask_or_stack for the cisc operand
3983     fprintf(fp_cpp, "\n");
3984     fprintf(fp_cpp, "void %sNode::use_cisc_RegMask() {\n", this->_ident);
3985     // Lookup the correct reg_mask_or_stack
3986     const char *reg_mask_name = cisc_reg_mask_name();
3987     fprintf(fp_cpp, "  _cisc_RegMask = &STACK_OR_%s;\n", reg_mask_name);
3988     fprintf(fp_cpp, "}\n");
3989     //
3990     // Construct CISC version of this instruction
3991     fprintf(fp_cpp, "\n");
3992     fprintf(fp_cpp, "// Build CISC version of this instruction\n");
3993     fprintf(fp_cpp, "MachNode *%sNode::cisc_version(int offset) {\n", this->_ident);
3994     // Create the MachNode object
3995     fprintf(fp_cpp, "  %sNode *node = new %sNode();\n", name, name);
3996     // Fill in the bottom_type where requested
3997     if ( this->captures_bottom_type(AD.globalNames()) ) {
3998       fprintf(fp_cpp, "  node->_bottom_type = bottom_type();\n");
3999     }
4000 
4001     uint cur_num_opnds = num_opnds();
4002     if (cur_num_opnds > 1 && cur_num_opnds != num_unique_opnds()) {
4003       fprintf(fp_cpp,"  node->_num_opnds = %d;\n", num_unique_opnds());
4004     }
4005 
4006     fprintf(fp_cpp, "\n");
4007     fprintf(fp_cpp, "  // Copy _idx, inputs and operands to new node\n");
4008     fprintf(fp_cpp, "  fill_new_machnode(node);\n");
4009     // Construct operand to access [stack_pointer + offset]
4010     fprintf(fp_cpp, "  // Construct operand to access [stack_pointer + offset]\n");
4011     fprintf(fp_cpp, "  node->set_opnd_array(cisc_operand(), new %sOper(offset));\n", cisc_oper_name);
4012     fprintf(fp_cpp, "\n");
4013 
4014     // Return result and exit scope
4015     fprintf(fp_cpp, "  return node;\n");
4016     fprintf(fp_cpp, "}\n");
4017     fprintf(fp_cpp, "\n");
4018     return true;
4019   }
4020   return false;
4021 }
4022 
4023 //---------------------------declare_short_branch_methods----------------------
4024 // Build prototypes for short branch methods
declare_short_branch_methods(FILE * fp_hpp)4025 void InstructForm::declare_short_branch_methods(FILE *fp_hpp) {
4026   if (has_short_branch_form()) {
4027     fprintf(fp_hpp, "  virtual MachNode      *short_branch_version();\n");
4028   }
4029 }
4030 
4031 //---------------------------define_short_branch_methods-----------------------
4032 // Build definitions for short branch methods
define_short_branch_methods(ArchDesc & AD,FILE * fp_cpp)4033 bool InstructForm::define_short_branch_methods(ArchDesc &AD, FILE *fp_cpp) {
4034   if (has_short_branch_form()) {
4035     InstructForm *short_branch = short_branch_form();
4036     const char   *name         = short_branch->_ident;
4037 
4038     // Construct short_branch_version() method.
4039     fprintf(fp_cpp, "// Build short branch version of this instruction\n");
4040     fprintf(fp_cpp, "MachNode *%sNode::short_branch_version() {\n", this->_ident);
4041     // Create the MachNode object
4042     fprintf(fp_cpp, "  %sNode *node = new %sNode();\n", name, name);
4043     if( is_ideal_if() ) {
4044       fprintf(fp_cpp, "  node->_prob = _prob;\n");
4045       fprintf(fp_cpp, "  node->_fcnt = _fcnt;\n");
4046     }
4047     // Fill in the bottom_type where requested
4048     if ( this->captures_bottom_type(AD.globalNames()) ) {
4049       fprintf(fp_cpp, "  node->_bottom_type = bottom_type();\n");
4050     }
4051 
4052     fprintf(fp_cpp, "\n");
4053     // Short branch version must use same node index for access
4054     // through allocator's tables
4055     fprintf(fp_cpp, "  // Copy _idx, inputs and operands to new node\n");
4056     fprintf(fp_cpp, "  fill_new_machnode(node);\n");
4057 
4058     // Return result and exit scope
4059     fprintf(fp_cpp, "  return node;\n");
4060     fprintf(fp_cpp, "}\n");
4061     fprintf(fp_cpp,"\n");
4062     return true;
4063   }
4064   return false;
4065 }
4066 
4067 
4068 //---------------------------buildMachNodeGenerator----------------------------
4069 // Build switch to invoke appropriate "new" MachNode for an opcode
buildMachNodeGenerator(FILE * fp_cpp)4070 void ArchDesc::buildMachNodeGenerator(FILE *fp_cpp) {
4071 
4072   // Build switch to invoke 'new' for a specific MachNode
4073   fprintf(fp_cpp, "\n");
4074   fprintf(fp_cpp, "\n");
4075   fprintf(fp_cpp,
4076           "//------------------------- MachNode Generator ---------------\n");
4077   fprintf(fp_cpp,
4078           "// A switch statement on the dense-packed user-defined type system\n"
4079           "// that invokes 'new' on the corresponding class constructor.\n");
4080   fprintf(fp_cpp, "\n");
4081   fprintf(fp_cpp, "MachNode *State::MachNodeGenerator");
4082   fprintf(fp_cpp, "(int opcode)");
4083   fprintf(fp_cpp, "{\n");
4084   fprintf(fp_cpp, "  switch(opcode) {\n");
4085 
4086   // Provide constructor for all user-defined instructions
4087   _instructions.reset();
4088   int  opIndex = operandFormCount();
4089   InstructForm *inst;
4090   for( ; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
4091     // Ensure that matrule is defined.
4092     if ( inst->_matrule == NULL ) continue;
4093 
4094     int         opcode  = opIndex++;
4095     const char *opClass = inst->_ident;
4096     char       *opType  = NULL;
4097 
4098     // Generate the case statement for this instruction
4099     fprintf(fp_cpp, "  case %s_rule:", opClass);
4100 
4101     // Start local scope
4102     fprintf(fp_cpp, " {\n");
4103     // Generate code to construct the new MachNode
4104     buildMachNode(fp_cpp, inst, "     ");
4105     // Return result and exit scope
4106     fprintf(fp_cpp, "      return node;\n");
4107     fprintf(fp_cpp, "    }\n");
4108   }
4109 
4110   // Generate the default case for switch(opcode)
4111   fprintf(fp_cpp, "  \n");
4112   fprintf(fp_cpp, "  default:\n");
4113   fprintf(fp_cpp, "    fprintf(stderr, \"Default MachNode Generator invoked for: \\n\");\n");
4114   fprintf(fp_cpp, "    fprintf(stderr, \"   opcode = %cd\\n\", opcode);\n", '%');
4115   fprintf(fp_cpp, "    break;\n");
4116   fprintf(fp_cpp, "  };\n");
4117 
4118   // Generate the closing for method Matcher::MachNodeGenerator
4119   fprintf(fp_cpp, "  return NULL;\n");
4120   fprintf(fp_cpp, "}\n");
4121 }
4122 
4123 
4124 //---------------------------buildInstructMatchCheck--------------------------
4125 // Output the method to Matcher which checks whether or not a specific
4126 // instruction has a matching rule for the host architecture.
buildInstructMatchCheck(FILE * fp_cpp) const4127 void ArchDesc::buildInstructMatchCheck(FILE *fp_cpp) const {
4128   fprintf(fp_cpp, "\n\n");
4129   fprintf(fp_cpp, "const bool Matcher::has_match_rule(int opcode) {\n");
4130   fprintf(fp_cpp, "  assert(_last_machine_leaf < opcode && opcode < _last_opcode, \"opcode in range\");\n");
4131   fprintf(fp_cpp, "  return _hasMatchRule[opcode];\n");
4132   fprintf(fp_cpp, "}\n\n");
4133 
4134   fprintf(fp_cpp, "const bool Matcher::_hasMatchRule[_last_opcode] = {\n");
4135   int i;
4136   for (i = 0; i < _last_opcode - 1; i++) {
4137     fprintf(fp_cpp, "    %-5s,  // %s\n",
4138             _has_match_rule[i] ? "true" : "false",
4139             NodeClassNames[i]);
4140   }
4141   fprintf(fp_cpp, "    %-5s   // %s\n",
4142           _has_match_rule[i] ? "true" : "false",
4143           NodeClassNames[i]);
4144   fprintf(fp_cpp, "};\n");
4145 }
4146 
4147 //---------------------------buildFrameMethods---------------------------------
4148 // Output the methods to Matcher which specify frame behavior
buildFrameMethods(FILE * fp_cpp)4149 void ArchDesc::buildFrameMethods(FILE *fp_cpp) {
4150   fprintf(fp_cpp,"\n\n");
4151   // Stack Direction
4152   fprintf(fp_cpp,"bool Matcher::stack_direction() const { return %s; }\n\n",
4153           _frame->_direction ? "true" : "false");
4154   // Sync Stack Slots
4155   fprintf(fp_cpp,"int Compile::sync_stack_slots() const { return %s; }\n\n",
4156           _frame->_sync_stack_slots);
4157   // Java Stack Alignment
4158   fprintf(fp_cpp,"uint Matcher::stack_alignment_in_bytes() { return %s; }\n\n",
4159           _frame->_alignment);
4160   // Java Return Address Location
4161   fprintf(fp_cpp,"OptoReg::Name Matcher::return_addr() const {");
4162   if (_frame->_return_addr_loc) {
4163     fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4164             _frame->_return_addr);
4165   }
4166   else {
4167     fprintf(fp_cpp," return OptoReg::stack2reg(%s); }\n\n",
4168             _frame->_return_addr);
4169   }
4170   // Java Stack Slot Preservation
4171   fprintf(fp_cpp,"uint Compile::in_preserve_stack_slots() ");
4172   fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_in_preserve_slots);
4173   // Top Of Stack Slot Preservation, for both Java and C
4174   fprintf(fp_cpp,"uint Compile::out_preserve_stack_slots() ");
4175   fprintf(fp_cpp,"{ return SharedRuntime::out_preserve_stack_slots(); }\n\n");
4176   // varargs C out slots killed
4177   fprintf(fp_cpp,"uint Compile::varargs_C_out_slots_killed() const ");
4178   fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_varargs_C_out_slots_killed);
4179   // Java Argument Position
4180   fprintf(fp_cpp,"void Matcher::calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length, bool is_outgoing) {\n");
4181   fprintf(fp_cpp,"%s\n", _frame->_calling_convention);
4182   fprintf(fp_cpp,"}\n\n");
4183   // Native Argument Position
4184   fprintf(fp_cpp,"void Matcher::c_calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length) {\n");
4185   fprintf(fp_cpp,"%s\n", _frame->_c_calling_convention);
4186   fprintf(fp_cpp,"}\n\n");
4187   // Java Return Value Location
4188   fprintf(fp_cpp,"OptoRegPair Matcher::return_value(uint ideal_reg, bool is_outgoing) {\n");
4189   fprintf(fp_cpp,"%s\n", _frame->_return_value);
4190   fprintf(fp_cpp,"}\n\n");
4191   // Native Return Value Location
4192   fprintf(fp_cpp,"OptoRegPair Matcher::c_return_value(uint ideal_reg, bool is_outgoing) {\n");
4193   fprintf(fp_cpp,"%s\n", _frame->_c_return_value);
4194   fprintf(fp_cpp,"}\n\n");
4195 
4196   // Inline Cache Register, mask definition, and encoding
4197   fprintf(fp_cpp,"OptoReg::Name Matcher::inline_cache_reg() {");
4198   fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4199           _frame->_inline_cache_reg);
4200   fprintf(fp_cpp,"int Matcher::inline_cache_reg_encode() {");
4201   fprintf(fp_cpp," return _regEncode[inline_cache_reg()]; }\n\n");
4202 
4203   // Interpreter's Method Oop Register, mask definition, and encoding
4204   fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_method_oop_reg() {");
4205   fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4206           _frame->_interpreter_method_oop_reg);
4207   fprintf(fp_cpp,"int Matcher::interpreter_method_oop_reg_encode() {");
4208   fprintf(fp_cpp," return _regEncode[interpreter_method_oop_reg()]; }\n\n");
4209 
4210   // Interpreter's Frame Pointer Register, mask definition, and encoding
4211   fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_frame_pointer_reg() {");
4212   if (_frame->_interpreter_frame_pointer_reg == NULL)
4213     fprintf(fp_cpp," return OptoReg::Bad; }\n\n");
4214   else
4215     fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4216             _frame->_interpreter_frame_pointer_reg);
4217 
4218   // Frame Pointer definition
4219   /* CNC - I can not contemplate having a different frame pointer between
4220      Java and native code; makes my head hurt to think about it.
4221   fprintf(fp_cpp,"OptoReg::Name Matcher::frame_pointer() const {");
4222   fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4223           _frame->_frame_pointer);
4224   */
4225   // (Native) Frame Pointer definition
4226   fprintf(fp_cpp,"OptoReg::Name Matcher::c_frame_pointer() const {");
4227   fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4228           _frame->_frame_pointer);
4229 
4230   // Number of callee-save + always-save registers for calling convention
4231   fprintf(fp_cpp, "// Number of callee-save + always-save registers\n");
4232   fprintf(fp_cpp, "int  Matcher::number_of_saved_registers() {\n");
4233   RegDef *rdef;
4234   int nof_saved_registers = 0;
4235   _register->reset_RegDefs();
4236   while( (rdef = _register->iter_RegDefs()) != NULL ) {
4237     if( !strcmp(rdef->_callconv, "SOE") ||  !strcmp(rdef->_callconv, "AS") )
4238       ++nof_saved_registers;
4239   }
4240   fprintf(fp_cpp, "  return %d;\n", nof_saved_registers);
4241   fprintf(fp_cpp, "};\n\n");
4242 }
4243 
4244 
4245 
4246 
4247 static int PrintAdlcCisc = 0;
4248 //---------------------------identify_cisc_spilling----------------------------
4249 // Get info for the CISC_oracle and MachNode::cisc_version()
identify_cisc_spill_instructions()4250 void ArchDesc::identify_cisc_spill_instructions() {
4251 
4252   if (_frame == NULL)
4253     return;
4254 
4255   // Find the user-defined operand for cisc-spilling
4256   if( _frame->_cisc_spilling_operand_name != NULL ) {
4257     const Form *form = _globalNames[_frame->_cisc_spilling_operand_name];
4258     OperandForm *oper = form ? form->is_operand() : NULL;
4259     // Verify the user's suggestion
4260     if( oper != NULL ) {
4261       // Ensure that match field is defined.
4262       if ( oper->_matrule != NULL )  {
4263         MatchRule &mrule = *oper->_matrule;
4264         if( strcmp(mrule._opType,"AddP") == 0 ) {
4265           MatchNode *left = mrule._lChild;
4266           MatchNode *right= mrule._rChild;
4267           if( left != NULL && right != NULL ) {
4268             const Form *left_op  = _globalNames[left->_opType]->is_operand();
4269             const Form *right_op = _globalNames[right->_opType]->is_operand();
4270             if(  (left_op != NULL && right_op != NULL)
4271               && (left_op->interface_type(_globalNames) == Form::register_interface)
4272               && (right_op->interface_type(_globalNames) == Form::constant_interface) ) {
4273               // Successfully verified operand
4274               set_cisc_spill_operand( oper );
4275               if( _cisc_spill_debug ) {
4276                 fprintf(stderr, "\n\nVerified CISC-spill operand %s\n\n", oper->_ident);
4277              }
4278             }
4279           }
4280         }
4281       }
4282     }
4283   }
4284 
4285   if( cisc_spill_operand() != NULL ) {
4286     // N^2 comparison of instructions looking for a cisc-spilling version
4287     _instructions.reset();
4288     InstructForm *instr;
4289     for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
4290       // Ensure that match field is defined.
4291       if ( instr->_matrule == NULL )  continue;
4292 
4293       MatchRule &mrule = *instr->_matrule;
4294       Predicate *pred  =  instr->build_predicate();
4295 
4296       // Grab the machine type of the operand
4297       const char *rootOp = instr->_ident;
4298       mrule._machType    = rootOp;
4299 
4300       // Find result type for match
4301       const char *result = instr->reduce_result();
4302 
4303       if( PrintAdlcCisc ) fprintf(stderr, "  new instruction %s \n", instr->_ident ? instr->_ident : " ");
4304       bool  found_cisc_alternate = false;
4305       _instructions.reset2();
4306       InstructForm *instr2;
4307       for( ; !found_cisc_alternate && (instr2 = (InstructForm*)_instructions.iter2()) != NULL; ) {
4308         // Ensure that match field is defined.
4309         if( PrintAdlcCisc ) fprintf(stderr, "  instr2 == %s \n", instr2->_ident ? instr2->_ident : " ");
4310         if ( instr2->_matrule != NULL
4311             && (instr != instr2 )                // Skip self
4312             && (instr2->reduce_result() != NULL) // want same result
4313             && (strcmp(result, instr2->reduce_result()) == 0)) {
4314           MatchRule &mrule2 = *instr2->_matrule;
4315           Predicate *pred2  =  instr2->build_predicate();
4316           found_cisc_alternate = instr->cisc_spills_to(*this, instr2);
4317         }
4318       }
4319     }
4320   }
4321 }
4322 
4323 //---------------------------build_cisc_spilling-------------------------------
4324 // Get info for the CISC_oracle and MachNode::cisc_version()
build_cisc_spill_instructions(FILE * fp_hpp,FILE * fp_cpp)4325 void ArchDesc::build_cisc_spill_instructions(FILE *fp_hpp, FILE *fp_cpp) {
4326   // Output the table for cisc spilling
4327   fprintf(fp_cpp, "//  The following instructions can cisc-spill\n");
4328   _instructions.reset();
4329   InstructForm *inst = NULL;
4330   for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
4331     // Ensure this is a machine-world instruction
4332     if ( inst->ideal_only() )  continue;
4333     const char *inst_name = inst->_ident;
4334     int   operand   = inst->cisc_spill_operand();
4335     if( operand != AdlcVMDeps::Not_cisc_spillable ) {
4336       InstructForm *inst2 = inst->cisc_spill_alternate();
4337       fprintf(fp_cpp, "//  %s can cisc-spill operand %d to %s\n", inst->_ident, operand, inst2->_ident);
4338     }
4339   }
4340   fprintf(fp_cpp, "\n\n");
4341 }
4342 
4343 //---------------------------identify_short_branches----------------------------
4344 // Get info for our short branch replacement oracle.
identify_short_branches()4345 void ArchDesc::identify_short_branches() {
4346   // Walk over all instructions, checking to see if they match a short
4347   // branching alternate.
4348   _instructions.reset();
4349   InstructForm *instr;
4350   while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4351     // The instruction must have a match rule.
4352     if (instr->_matrule != NULL &&
4353         instr->is_short_branch()) {
4354 
4355       _instructions.reset2();
4356       InstructForm *instr2;
4357       while( (instr2 = (InstructForm*)_instructions.iter2()) != NULL ) {
4358         instr2->check_branch_variant(*this, instr);
4359       }
4360     }
4361   }
4362 }
4363 
4364 
4365 //---------------------------identify_unique_operands---------------------------
4366 // Identify unique operands.
identify_unique_operands()4367 void ArchDesc::identify_unique_operands() {
4368   // Walk over all instructions.
4369   _instructions.reset();
4370   InstructForm *instr;
4371   while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4372     // Ensure this is a machine-world instruction
4373     if (!instr->ideal_only()) {
4374       instr->set_unique_opnds();
4375     }
4376   }
4377 }
4378