Mon, 25 Jun 2012 21:33:35 -0400
7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table
Summary: Cannot delete _buckets and HashtableEntries in shared space (CDS)
Reviewed-by: acorn, kvn, dlong, dcubed, kamg
1 /*
2 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 // output_c.cpp - Class CPP file output routines for architecture definition
27 #include "adlc.hpp"
29 // Utilities to characterize effect statements
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 }
38 static bool is_use(int usedef) {
39 switch(usedef) {
40 case Component::USE:
41 case Component::USE_DEF:
42 case Component::USE_KILL: return true; break;
43 }
44 return false;
45 }
47 static bool is_kill(int usedef) {
48 switch(usedef) {
49 case Component::KILL:
50 case Component::USE_KILL: return true; break;
51 }
52 return false;
53 }
55 // Define an array containing the machine register names, strings.
56 static void defineRegNames(FILE *fp, RegisterForm *registers) {
57 if (registers) {
58 fprintf(fp,"\n");
59 fprintf(fp,"// An array of character pointers to machine register names.\n");
60 fprintf(fp,"const char *Matcher::regName[REG_COUNT] = {\n");
62 // Output the register name for each register in the allocation classes
63 RegDef *reg_def = NULL;
64 RegDef *next = NULL;
65 registers->reset_RegDefs();
66 for( reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next ) {
67 next = registers->iter_RegDefs();
68 const char *comma = (next != NULL) ? "," : " // no trailing comma";
69 fprintf(fp," \"%s\"%s\n",
70 reg_def->_regname, comma );
71 }
73 // Finish defining enumeration
74 fprintf(fp,"};\n");
76 fprintf(fp,"\n");
77 fprintf(fp,"// An array of character pointers to machine register names.\n");
78 fprintf(fp,"const VMReg OptoReg::opto2vm[REG_COUNT] = {\n");
79 reg_def = NULL;
80 next = NULL;
81 registers->reset_RegDefs();
82 for( reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next ) {
83 next = registers->iter_RegDefs();
84 const char *comma = (next != NULL) ? "," : " // no trailing comma";
85 fprintf(fp,"\t%s%s\n", reg_def->_concrete, comma );
86 }
87 // Finish defining array
88 fprintf(fp,"\t};\n");
89 fprintf(fp,"\n");
91 fprintf(fp," OptoReg::Name OptoReg::vm2opto[ConcreteRegisterImpl::number_of_registers];\n");
93 }
94 }
96 // Define an array containing the machine register encoding values
97 static void defineRegEncodes(FILE *fp, RegisterForm *registers) {
98 if (registers) {
99 fprintf(fp,"\n");
100 fprintf(fp,"// An array of the machine register encode values\n");
101 fprintf(fp,"const unsigned char Matcher::_regEncode[REG_COUNT] = {\n");
103 // Output the register encoding for each register in the allocation classes
104 RegDef *reg_def = NULL;
105 RegDef *next = NULL;
106 registers->reset_RegDefs();
107 for( reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next ) {
108 next = registers->iter_RegDefs();
109 const char* register_encode = reg_def->register_encode();
110 const char *comma = (next != NULL) ? "," : " // no trailing comma";
111 int encval;
112 if (!ADLParser::is_int_token(register_encode, encval)) {
113 fprintf(fp," %s%s // %s\n",
114 register_encode, comma, reg_def->_regname );
115 } else {
116 // Output known constants in hex char format (backward compatibility).
117 assert(encval < 256, "Exceeded supported width for register encoding");
118 fprintf(fp," (unsigned char)'\\x%X'%s // %s\n",
119 encval, comma, reg_def->_regname );
120 }
121 }
122 // Finish defining enumeration
123 fprintf(fp,"};\n");
125 } // Done defining array
126 }
128 // Output an enumeration of register class names
129 static void defineRegClassEnum(FILE *fp, RegisterForm *registers) {
130 if (registers) {
131 // Output an enumeration of register class names
132 fprintf(fp,"\n");
133 fprintf(fp,"// Enumeration of register class names\n");
134 fprintf(fp, "enum machRegisterClass {\n");
135 registers->_rclasses.reset();
136 for( const char *class_name = NULL;
137 (class_name = registers->_rclasses.iter()) != NULL; ) {
138 fprintf(fp," %s,\n", toUpper( class_name ));
139 }
140 // Finish defining enumeration
141 fprintf(fp, " _last_Mach_Reg_Class\n");
142 fprintf(fp, "};\n");
143 }
144 }
146 // Declare an enumeration of user-defined register classes
147 // and a list of register masks, one for each class.
148 void ArchDesc::declare_register_masks(FILE *fp_hpp) {
149 const char *rc_name;
151 if( _register ) {
152 // Build enumeration of user-defined register classes.
153 defineRegClassEnum(fp_hpp, _register);
155 // Generate a list of register masks, one for each class.
156 fprintf(fp_hpp,"\n");
157 fprintf(fp_hpp,"// Register masks, one for each register class.\n");
158 _register->_rclasses.reset();
159 for( rc_name = NULL;
160 (rc_name = _register->_rclasses.iter()) != NULL; ) {
161 const char *prefix = "";
162 RegClass *reg_class = _register->getRegClass(rc_name);
163 assert( reg_class, "Using an undefined register class");
165 if (reg_class->_user_defined == NULL) {
166 fprintf(fp_hpp, "extern const RegMask _%s%s_mask;\n", prefix, toUpper( rc_name ) );
167 fprintf(fp_hpp, "inline const RegMask &%s%s_mask() { return _%s%s_mask; }\n", prefix, toUpper( rc_name ), prefix, toUpper( rc_name ));
168 } else {
169 fprintf(fp_hpp, "inline const RegMask &%s%s_mask() { %s }\n", prefix, toUpper( rc_name ), reg_class->_user_defined);
170 }
172 if( reg_class->_stack_or_reg ) {
173 assert(reg_class->_user_defined == NULL, "no user defined reg class here");
174 fprintf(fp_hpp, "extern const RegMask _%sSTACK_OR_%s_mask;\n", prefix, toUpper( rc_name ) );
175 fprintf(fp_hpp, "inline const RegMask &%sSTACK_OR_%s_mask() { return _%sSTACK_OR_%s_mask; }\n", prefix, toUpper( rc_name ), prefix, toUpper( rc_name ) );
176 }
177 }
178 }
179 }
181 // Generate an enumeration of user-defined register classes
182 // and a list of register masks, one for each class.
183 void ArchDesc::build_register_masks(FILE *fp_cpp) {
184 const char *rc_name;
186 if( _register ) {
187 // Generate a list of register masks, one for each class.
188 fprintf(fp_cpp,"\n");
189 fprintf(fp_cpp,"// Register masks, one for each register class.\n");
190 _register->_rclasses.reset();
191 for( rc_name = NULL;
192 (rc_name = _register->_rclasses.iter()) != NULL; ) {
193 const char *prefix = "";
194 RegClass *reg_class = _register->getRegClass(rc_name);
195 assert( reg_class, "Using an undefined register class");
197 if (reg_class->_user_defined != NULL) continue;
199 int len = RegisterForm::RegMask_Size();
200 fprintf(fp_cpp, "const RegMask _%s%s_mask(", prefix, toUpper( rc_name ) );
201 { int i;
202 for( i = 0; i < len-1; i++ )
203 fprintf(fp_cpp," 0x%x,",reg_class->regs_in_word(i,false));
204 fprintf(fp_cpp," 0x%x );\n",reg_class->regs_in_word(i,false));
205 }
207 if( reg_class->_stack_or_reg ) {
208 int i;
209 fprintf(fp_cpp, "const RegMask _%sSTACK_OR_%s_mask(", prefix, toUpper( rc_name ) );
210 for( i = 0; i < len-1; i++ )
211 fprintf(fp_cpp," 0x%x,",reg_class->regs_in_word(i,true));
212 fprintf(fp_cpp," 0x%x );\n",reg_class->regs_in_word(i,true));
213 }
214 }
215 }
216 }
218 // Compute an index for an array in the pipeline_reads_NNN arrays
219 static int pipeline_reads_initializer(FILE *fp_cpp, NameList &pipeline_reads, PipeClassForm *pipeclass)
220 {
221 int templen = 1;
222 int paramcount = 0;
223 const char *paramname;
225 if (pipeclass->_parameters.count() == 0)
226 return -1;
228 pipeclass->_parameters.reset();
229 paramname = pipeclass->_parameters.iter();
230 const PipeClassOperandForm *pipeopnd =
231 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
232 if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
233 pipeclass->_parameters.reset();
235 while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
236 const PipeClassOperandForm *tmppipeopnd =
237 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
239 if (tmppipeopnd)
240 templen += 10 + (int)strlen(tmppipeopnd->_stage);
241 else
242 templen += 19;
244 paramcount++;
245 }
247 // See if the count is zero
248 if (paramcount == 0) {
249 return -1;
250 }
252 char *operand_stages = new char [templen];
253 operand_stages[0] = 0;
254 int i = 0;
255 templen = 0;
257 pipeclass->_parameters.reset();
258 paramname = pipeclass->_parameters.iter();
259 pipeopnd = (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
260 if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
261 pipeclass->_parameters.reset();
263 while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
264 const PipeClassOperandForm *tmppipeopnd =
265 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
266 templen += sprintf(&operand_stages[templen], " stage_%s%c\n",
267 tmppipeopnd ? tmppipeopnd->_stage : "undefined",
268 (++i < paramcount ? ',' : ' ') );
269 }
271 // See if the same string is in the table
272 int ndx = pipeline_reads.index(operand_stages);
274 // No, add it to the table
275 if (ndx < 0) {
276 pipeline_reads.addName(operand_stages);
277 ndx = pipeline_reads.index(operand_stages);
279 fprintf(fp_cpp, "static const enum machPipelineStages pipeline_reads_%03d[%d] = {\n%s};\n\n",
280 ndx+1, paramcount, operand_stages);
281 }
282 else
283 delete [] operand_stages;
285 return (ndx);
286 }
288 // Compute an index for an array in the pipeline_res_stages_NNN arrays
289 static int pipeline_res_stages_initializer(
290 FILE *fp_cpp,
291 PipelineForm *pipeline,
292 NameList &pipeline_res_stages,
293 PipeClassForm *pipeclass)
294 {
295 const PipeClassResourceForm *piperesource;
296 int * res_stages = new int [pipeline->_rescount];
297 int i;
299 for (i = 0; i < pipeline->_rescount; i++)
300 res_stages[i] = 0;
302 for (pipeclass->_resUsage.reset();
303 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
304 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
305 for (i = 0; i < pipeline->_rescount; i++)
306 if ((1 << i) & used_mask) {
307 int stage = pipeline->_stages.index(piperesource->_stage);
308 if (res_stages[i] < stage+1)
309 res_stages[i] = stage+1;
310 }
311 }
313 // Compute the length needed for the resource list
314 int commentlen = 0;
315 int max_stage = 0;
316 for (i = 0; i < pipeline->_rescount; i++) {
317 if (res_stages[i] == 0) {
318 if (max_stage < 9)
319 max_stage = 9;
320 }
321 else {
322 int stagelen = (int)strlen(pipeline->_stages.name(res_stages[i]-1));
323 if (max_stage < stagelen)
324 max_stage = stagelen;
325 }
327 commentlen += (int)strlen(pipeline->_reslist.name(i));
328 }
330 int templen = 1 + commentlen + pipeline->_rescount * (max_stage + 14);
332 // Allocate space for the resource list
333 char * resource_stages = new char [templen];
335 templen = 0;
336 for (i = 0; i < pipeline->_rescount; i++) {
337 const char * const resname =
338 res_stages[i] == 0 ? "undefined" : pipeline->_stages.name(res_stages[i]-1);
340 templen += sprintf(&resource_stages[templen], " stage_%s%-*s // %s\n",
341 resname, max_stage - (int)strlen(resname) + 1,
342 (i < pipeline->_rescount-1) ? "," : "",
343 pipeline->_reslist.name(i));
344 }
346 // See if the same string is in the table
347 int ndx = pipeline_res_stages.index(resource_stages);
349 // No, add it to the table
350 if (ndx < 0) {
351 pipeline_res_stages.addName(resource_stages);
352 ndx = pipeline_res_stages.index(resource_stages);
354 fprintf(fp_cpp, "static const enum machPipelineStages pipeline_res_stages_%03d[%d] = {\n%s};\n\n",
355 ndx+1, pipeline->_rescount, resource_stages);
356 }
357 else
358 delete [] resource_stages;
360 delete [] res_stages;
362 return (ndx);
363 }
365 // Compute an index for an array in the pipeline_res_cycles_NNN arrays
366 static int pipeline_res_cycles_initializer(
367 FILE *fp_cpp,
368 PipelineForm *pipeline,
369 NameList &pipeline_res_cycles,
370 PipeClassForm *pipeclass)
371 {
372 const PipeClassResourceForm *piperesource;
373 int * res_cycles = new int [pipeline->_rescount];
374 int i;
376 for (i = 0; i < pipeline->_rescount; i++)
377 res_cycles[i] = 0;
379 for (pipeclass->_resUsage.reset();
380 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
381 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
382 for (i = 0; i < pipeline->_rescount; i++)
383 if ((1 << i) & used_mask) {
384 int cycles = piperesource->_cycles;
385 if (res_cycles[i] < cycles)
386 res_cycles[i] = cycles;
387 }
388 }
390 // Pre-compute the string length
391 int templen;
392 int cyclelen = 0, commentlen = 0;
393 int max_cycles = 0;
394 char temp[32];
396 for (i = 0; i < pipeline->_rescount; i++) {
397 if (max_cycles < res_cycles[i])
398 max_cycles = res_cycles[i];
399 templen = sprintf(temp, "%d", res_cycles[i]);
400 if (cyclelen < templen)
401 cyclelen = templen;
402 commentlen += (int)strlen(pipeline->_reslist.name(i));
403 }
405 templen = 1 + commentlen + (cyclelen + 8) * pipeline->_rescount;
407 // Allocate space for the resource list
408 char * resource_cycles = new char [templen];
410 templen = 0;
412 for (i = 0; i < pipeline->_rescount; i++) {
413 templen += sprintf(&resource_cycles[templen], " %*d%c // %s\n",
414 cyclelen, res_cycles[i], (i < pipeline->_rescount-1) ? ',' : ' ', pipeline->_reslist.name(i));
415 }
417 // See if the same string is in the table
418 int ndx = pipeline_res_cycles.index(resource_cycles);
420 // No, add it to the table
421 if (ndx < 0) {
422 pipeline_res_cycles.addName(resource_cycles);
423 ndx = pipeline_res_cycles.index(resource_cycles);
425 fprintf(fp_cpp, "static const uint pipeline_res_cycles_%03d[%d] = {\n%s};\n\n",
426 ndx+1, pipeline->_rescount, resource_cycles);
427 }
428 else
429 delete [] resource_cycles;
431 delete [] res_cycles;
433 return (ndx);
434 }
436 //typedef unsigned long long uint64_t;
438 // Compute an index for an array in the pipeline_res_mask_NNN arrays
439 static int pipeline_res_mask_initializer(
440 FILE *fp_cpp,
441 PipelineForm *pipeline,
442 NameList &pipeline_res_mask,
443 NameList &pipeline_res_args,
444 PipeClassForm *pipeclass)
445 {
446 const PipeClassResourceForm *piperesource;
447 const uint rescount = pipeline->_rescount;
448 const uint maxcycleused = pipeline->_maxcycleused;
449 const uint cyclemasksize = (maxcycleused + 31) >> 5;
451 int i, j;
452 int element_count = 0;
453 uint *res_mask = new uint [cyclemasksize];
454 uint resources_used = 0;
455 uint resources_used_exclusively = 0;
457 for (pipeclass->_resUsage.reset();
458 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; )
459 element_count++;
461 // Pre-compute the string length
462 int templen;
463 int commentlen = 0;
464 int max_cycles = 0;
466 int cyclelen = ((maxcycleused + 3) >> 2);
467 int masklen = (rescount + 3) >> 2;
469 int cycledigit = 0;
470 for (i = maxcycleused; i > 0; i /= 10)
471 cycledigit++;
473 int maskdigit = 0;
474 for (i = rescount; i > 0; i /= 10)
475 maskdigit++;
477 static const char * pipeline_use_cycle_mask = "Pipeline_Use_Cycle_Mask";
478 static const char * pipeline_use_element = "Pipeline_Use_Element";
480 templen = 1 +
481 (int)(strlen(pipeline_use_cycle_mask) + (int)strlen(pipeline_use_element) +
482 (cyclemasksize * 12) + masklen + (cycledigit * 2) + 30) * element_count;
484 // Allocate space for the resource list
485 char * resource_mask = new char [templen];
486 char * last_comma = NULL;
488 templen = 0;
490 for (pipeclass->_resUsage.reset();
491 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
492 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
494 if (!used_mask)
495 fprintf(stderr, "*** used_mask is 0 ***\n");
497 resources_used |= used_mask;
499 uint lb, ub;
501 for (lb = 0; (used_mask & (1 << lb)) == 0; lb++);
502 for (ub = 31; (used_mask & (1 << ub)) == 0; ub--);
504 if (lb == ub)
505 resources_used_exclusively |= used_mask;
507 int formatlen =
508 sprintf(&resource_mask[templen], " %s(0x%0*x, %*d, %*d, %s %s(",
509 pipeline_use_element,
510 masklen, used_mask,
511 cycledigit, lb, cycledigit, ub,
512 ((used_mask & (used_mask-1)) != 0) ? "true, " : "false,",
513 pipeline_use_cycle_mask);
515 templen += formatlen;
517 memset(res_mask, 0, cyclemasksize * sizeof(uint));
519 int cycles = piperesource->_cycles;
520 uint stage = pipeline->_stages.index(piperesource->_stage);
521 uint upper_limit = stage+cycles-1;
522 uint lower_limit = stage-1;
523 uint upper_idx = upper_limit >> 5;
524 uint lower_idx = lower_limit >> 5;
525 uint upper_position = upper_limit & 0x1f;
526 uint lower_position = lower_limit & 0x1f;
528 uint mask = (((uint)1) << upper_position) - 1;
530 while ( upper_idx > lower_idx ) {
531 res_mask[upper_idx--] |= mask;
532 mask = (uint)-1;
533 }
535 mask -= (((uint)1) << lower_position) - 1;
536 res_mask[upper_idx] |= mask;
538 for (j = cyclemasksize-1; j >= 0; j--) {
539 formatlen =
540 sprintf(&resource_mask[templen], "0x%08x%s", res_mask[j], j > 0 ? ", " : "");
541 templen += formatlen;
542 }
544 resource_mask[templen++] = ')';
545 resource_mask[templen++] = ')';
546 last_comma = &resource_mask[templen];
547 resource_mask[templen++] = ',';
548 resource_mask[templen++] = '\n';
549 }
551 resource_mask[templen] = 0;
552 if (last_comma)
553 last_comma[0] = ' ';
555 // See if the same string is in the table
556 int ndx = pipeline_res_mask.index(resource_mask);
558 // No, add it to the table
559 if (ndx < 0) {
560 pipeline_res_mask.addName(resource_mask);
561 ndx = pipeline_res_mask.index(resource_mask);
563 if (strlen(resource_mask) > 0)
564 fprintf(fp_cpp, "static const Pipeline_Use_Element pipeline_res_mask_%03d[%d] = {\n%s};\n\n",
565 ndx+1, element_count, resource_mask);
567 char * args = new char [9 + 2*masklen + maskdigit];
569 sprintf(args, "0x%0*x, 0x%0*x, %*d",
570 masklen, resources_used,
571 masklen, resources_used_exclusively,
572 maskdigit, element_count);
574 pipeline_res_args.addName(args);
575 }
576 else
577 delete [] resource_mask;
579 delete [] res_mask;
580 //delete [] res_masks;
582 return (ndx);
583 }
585 void ArchDesc::build_pipe_classes(FILE *fp_cpp) {
586 const char *classname;
587 const char *resourcename;
588 int resourcenamelen = 0;
589 NameList pipeline_reads;
590 NameList pipeline_res_stages;
591 NameList pipeline_res_cycles;
592 NameList pipeline_res_masks;
593 NameList pipeline_res_args;
594 const int default_latency = 1;
595 const int non_operand_latency = 0;
596 const int node_latency = 0;
598 if (!_pipeline) {
599 fprintf(fp_cpp, "uint Node::latency(uint i) const {\n");
600 fprintf(fp_cpp, " // assert(false, \"pipeline functionality is not defined\");\n");
601 fprintf(fp_cpp, " return %d;\n", non_operand_latency);
602 fprintf(fp_cpp, "}\n");
603 return;
604 }
606 fprintf(fp_cpp, "\n");
607 fprintf(fp_cpp, "//------------------Pipeline Methods-----------------------------------------\n");
608 fprintf(fp_cpp, "#ifndef PRODUCT\n");
609 fprintf(fp_cpp, "const char * Pipeline::stageName(uint s) {\n");
610 fprintf(fp_cpp, " static const char * const _stage_names[] = {\n");
611 fprintf(fp_cpp, " \"undefined\"");
613 for (int s = 0; s < _pipeline->_stagecnt; s++)
614 fprintf(fp_cpp, ", \"%s\"", _pipeline->_stages.name(s));
616 fprintf(fp_cpp, "\n };\n\n");
617 fprintf(fp_cpp, " return (s <= %d ? _stage_names[s] : \"???\");\n",
618 _pipeline->_stagecnt);
619 fprintf(fp_cpp, "}\n");
620 fprintf(fp_cpp, "#endif\n\n");
622 fprintf(fp_cpp, "uint Pipeline::functional_unit_latency(uint start, const Pipeline *pred) const {\n");
623 fprintf(fp_cpp, " // See if the functional units overlap\n");
624 #if 0
625 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
626 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
627 fprintf(fp_cpp, " tty->print(\"# functional_unit_latency: start == %%d, this->exclusively == 0x%%03x, pred->exclusively == 0x%%03x\\n\", start, resourcesUsedExclusively(), pred->resourcesUsedExclusively());\n");
628 fprintf(fp_cpp, " }\n");
629 fprintf(fp_cpp, "#endif\n\n");
630 #endif
631 fprintf(fp_cpp, " uint mask = resourcesUsedExclusively() & pred->resourcesUsedExclusively();\n");
632 fprintf(fp_cpp, " if (mask == 0)\n return (start);\n\n");
633 #if 0
634 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
635 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
636 fprintf(fp_cpp, " tty->print(\"# functional_unit_latency: mask == 0x%%x\\n\", mask);\n");
637 fprintf(fp_cpp, " }\n");
638 fprintf(fp_cpp, "#endif\n\n");
639 #endif
640 fprintf(fp_cpp, " for (uint i = 0; i < pred->resourceUseCount(); i++) {\n");
641 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred->resourceUseElement(i);\n");
642 fprintf(fp_cpp, " if (predUse->multiple())\n");
643 fprintf(fp_cpp, " continue;\n\n");
644 fprintf(fp_cpp, " for (uint j = 0; j < resourceUseCount(); j++) {\n");
645 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = resourceUseElement(j);\n");
646 fprintf(fp_cpp, " if (currUse->multiple())\n");
647 fprintf(fp_cpp, " continue;\n\n");
648 fprintf(fp_cpp, " if (predUse->used() & currUse->used()) {\n");
649 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->mask();\n");
650 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->mask();\n\n");
651 fprintf(fp_cpp, " for ( y <<= start; x.overlaps(y); start++ )\n");
652 fprintf(fp_cpp, " y <<= 1;\n");
653 fprintf(fp_cpp, " }\n");
654 fprintf(fp_cpp, " }\n");
655 fprintf(fp_cpp, " }\n\n");
656 fprintf(fp_cpp, " // There is the potential for overlap\n");
657 fprintf(fp_cpp, " return (start);\n");
658 fprintf(fp_cpp, "}\n\n");
659 fprintf(fp_cpp, "// The following two routines assume that the root Pipeline_Use entity\n");
660 fprintf(fp_cpp, "// consists of exactly 1 element for each functional unit\n");
661 fprintf(fp_cpp, "// start is relative to the current cycle; used for latency-based info\n");
662 fprintf(fp_cpp, "uint Pipeline_Use::full_latency(uint delay, const Pipeline_Use &pred) const {\n");
663 fprintf(fp_cpp, " for (uint i = 0; i < pred._count; i++) {\n");
664 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred.element(i);\n");
665 fprintf(fp_cpp, " if (predUse->_multiple) {\n");
666 fprintf(fp_cpp, " uint min_delay = %d;\n",
667 _pipeline->_maxcycleused+1);
668 fprintf(fp_cpp, " // Multiple possible functional units, choose first unused one\n");
669 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
670 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = element(j);\n");
671 fprintf(fp_cpp, " uint curr_delay = delay;\n");
672 fprintf(fp_cpp, " if (predUse->_used & currUse->_used) {\n");
673 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
674 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
675 fprintf(fp_cpp, " for ( y <<= curr_delay; x.overlaps(y); curr_delay++ )\n");
676 fprintf(fp_cpp, " y <<= 1;\n");
677 fprintf(fp_cpp, " }\n");
678 fprintf(fp_cpp, " if (min_delay > curr_delay)\n min_delay = curr_delay;\n");
679 fprintf(fp_cpp, " }\n");
680 fprintf(fp_cpp, " if (delay < min_delay)\n delay = min_delay;\n");
681 fprintf(fp_cpp, " }\n");
682 fprintf(fp_cpp, " else {\n");
683 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
684 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = element(j);\n");
685 fprintf(fp_cpp, " if (predUse->_used & currUse->_used) {\n");
686 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
687 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
688 fprintf(fp_cpp, " for ( y <<= delay; x.overlaps(y); delay++ )\n");
689 fprintf(fp_cpp, " y <<= 1;\n");
690 fprintf(fp_cpp, " }\n");
691 fprintf(fp_cpp, " }\n");
692 fprintf(fp_cpp, " }\n");
693 fprintf(fp_cpp, " }\n\n");
694 fprintf(fp_cpp, " return (delay);\n");
695 fprintf(fp_cpp, "}\n\n");
696 fprintf(fp_cpp, "void Pipeline_Use::add_usage(const Pipeline_Use &pred) {\n");
697 fprintf(fp_cpp, " for (uint i = 0; i < pred._count; i++) {\n");
698 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred.element(i);\n");
699 fprintf(fp_cpp, " if (predUse->_multiple) {\n");
700 fprintf(fp_cpp, " // Multiple possible functional units, choose first unused one\n");
701 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
702 fprintf(fp_cpp, " Pipeline_Use_Element *currUse = element(j);\n");
703 fprintf(fp_cpp, " if ( !predUse->_mask.overlaps(currUse->_mask) ) {\n");
704 fprintf(fp_cpp, " currUse->_used |= (1 << j);\n");
705 fprintf(fp_cpp, " _resources_used |= (1 << j);\n");
706 fprintf(fp_cpp, " currUse->_mask.Or(predUse->_mask);\n");
707 fprintf(fp_cpp, " break;\n");
708 fprintf(fp_cpp, " }\n");
709 fprintf(fp_cpp, " }\n");
710 fprintf(fp_cpp, " }\n");
711 fprintf(fp_cpp, " else {\n");
712 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
713 fprintf(fp_cpp, " Pipeline_Use_Element *currUse = element(j);\n");
714 fprintf(fp_cpp, " currUse->_used |= (1 << j);\n");
715 fprintf(fp_cpp, " _resources_used |= (1 << j);\n");
716 fprintf(fp_cpp, " currUse->_mask.Or(predUse->_mask);\n");
717 fprintf(fp_cpp, " }\n");
718 fprintf(fp_cpp, " }\n");
719 fprintf(fp_cpp, " }\n");
720 fprintf(fp_cpp, "}\n\n");
722 fprintf(fp_cpp, "uint Pipeline::operand_latency(uint opnd, const Pipeline *pred) const {\n");
723 fprintf(fp_cpp, " int const default_latency = 1;\n");
724 fprintf(fp_cpp, "\n");
725 #if 0
726 fprintf(fp_cpp, "#ifndef PRODUCT\n");
727 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
728 fprintf(fp_cpp, " tty->print(\"# operand_latency(%%d), _read_stage_count = %%d\\n\", opnd, _read_stage_count);\n");
729 fprintf(fp_cpp, " }\n");
730 fprintf(fp_cpp, "#endif\n\n");
731 #endif
732 fprintf(fp_cpp, " assert(this, \"NULL pipeline info\");\n");
733 fprintf(fp_cpp, " assert(pred, \"NULL predecessor pipline info\");\n\n");
734 fprintf(fp_cpp, " if (pred->hasFixedLatency())\n return (pred->fixedLatency());\n\n");
735 fprintf(fp_cpp, " // If this is not an operand, then assume a dependence with 0 latency\n");
736 fprintf(fp_cpp, " if (opnd > _read_stage_count)\n return (0);\n\n");
737 fprintf(fp_cpp, " uint writeStage = pred->_write_stage;\n");
738 fprintf(fp_cpp, " uint readStage = _read_stages[opnd-1];\n");
739 #if 0
740 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
741 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
742 fprintf(fp_cpp, " tty->print(\"# operand_latency: writeStage=%%s readStage=%%s, opnd=%%d\\n\", stageName(writeStage), stageName(readStage), opnd);\n");
743 fprintf(fp_cpp, " }\n");
744 fprintf(fp_cpp, "#endif\n\n");
745 #endif
746 fprintf(fp_cpp, "\n");
747 fprintf(fp_cpp, " if (writeStage == stage_undefined || readStage == stage_undefined)\n");
748 fprintf(fp_cpp, " return (default_latency);\n");
749 fprintf(fp_cpp, "\n");
750 fprintf(fp_cpp, " int delta = writeStage - readStage;\n");
751 fprintf(fp_cpp, " if (delta < 0) delta = 0;\n\n");
752 #if 0
753 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
754 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
755 fprintf(fp_cpp, " tty->print(\"# operand_latency: delta=%%d\\n\", delta);\n");
756 fprintf(fp_cpp, " }\n");
757 fprintf(fp_cpp, "#endif\n\n");
758 #endif
759 fprintf(fp_cpp, " return (delta);\n");
760 fprintf(fp_cpp, "}\n\n");
762 if (!_pipeline)
763 /* Do Nothing */;
765 else if (_pipeline->_maxcycleused <=
766 #ifdef SPARC
767 64
768 #else
769 32
770 #endif
771 ) {
772 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
773 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(in1._mask & in2._mask);\n");
774 fprintf(fp_cpp, "}\n\n");
775 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
776 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(in1._mask | in2._mask);\n");
777 fprintf(fp_cpp, "}\n\n");
778 }
779 else {
780 uint l;
781 uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
782 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
783 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(");
784 for (l = 1; l <= masklen; l++)
785 fprintf(fp_cpp, "in1._mask%d & in2._mask%d%s\n", l, l, l < masklen ? ", " : "");
786 fprintf(fp_cpp, ");\n");
787 fprintf(fp_cpp, "}\n\n");
788 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
789 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(");
790 for (l = 1; l <= masklen; l++)
791 fprintf(fp_cpp, "in1._mask%d | in2._mask%d%s", l, l, l < masklen ? ", " : "");
792 fprintf(fp_cpp, ");\n");
793 fprintf(fp_cpp, "}\n\n");
794 fprintf(fp_cpp, "void Pipeline_Use_Cycle_Mask::Or(const Pipeline_Use_Cycle_Mask &in2) {\n ");
795 for (l = 1; l <= masklen; l++)
796 fprintf(fp_cpp, " _mask%d |= in2._mask%d;", l, l);
797 fprintf(fp_cpp, "\n}\n\n");
798 }
800 /* Get the length of all the resource names */
801 for (_pipeline->_reslist.reset(), resourcenamelen = 0;
802 (resourcename = _pipeline->_reslist.iter()) != NULL;
803 resourcenamelen += (int)strlen(resourcename));
805 // Create the pipeline class description
807 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");
808 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");
810 fprintf(fp_cpp, "const Pipeline_Use_Element Pipeline_Use::elaborated_elements[%d] = {\n", _pipeline->_rescount);
811 for (int i1 = 0; i1 < _pipeline->_rescount; i1++) {
812 fprintf(fp_cpp, " Pipeline_Use_Element(0, %d, %d, false, Pipeline_Use_Cycle_Mask(", i1, i1);
813 uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
814 for (int i2 = masklen-1; i2 >= 0; i2--)
815 fprintf(fp_cpp, "0%s", i2 > 0 ? ", " : "");
816 fprintf(fp_cpp, "))%s\n", i1 < (_pipeline->_rescount-1) ? "," : "");
817 }
818 fprintf(fp_cpp, "};\n\n");
820 fprintf(fp_cpp, "const Pipeline_Use Pipeline_Use::elaborated_use(0, 0, %d, (Pipeline_Use_Element *)&elaborated_elements[0]);\n\n",
821 _pipeline->_rescount);
823 for (_pipeline->_classlist.reset(); (classname = _pipeline->_classlist.iter()) != NULL; ) {
824 fprintf(fp_cpp, "\n");
825 fprintf(fp_cpp, "// Pipeline Class \"%s\"\n", classname);
826 PipeClassForm *pipeclass = _pipeline->_classdict[classname]->is_pipeclass();
827 int maxWriteStage = -1;
828 int maxMoreInstrs = 0;
829 int paramcount = 0;
830 int i = 0;
831 const char *paramname;
832 int resource_count = (_pipeline->_rescount + 3) >> 2;
834 // Scan the operands, looking for last output stage and number of inputs
835 for (pipeclass->_parameters.reset(); (paramname = pipeclass->_parameters.iter()) != NULL; ) {
836 const PipeClassOperandForm *pipeopnd =
837 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
838 if (pipeopnd) {
839 if (pipeopnd->_iswrite) {
840 int stagenum = _pipeline->_stages.index(pipeopnd->_stage);
841 int moreinsts = pipeopnd->_more_instrs;
842 if ((maxWriteStage+maxMoreInstrs) < (stagenum+moreinsts)) {
843 maxWriteStage = stagenum;
844 maxMoreInstrs = moreinsts;
845 }
846 }
847 }
849 if (i++ > 0 || (pipeopnd && !pipeopnd->isWrite()))
850 paramcount++;
851 }
853 // Create the list of stages for the operands that are read
854 // Note that we will build a NameList to reduce the number of copies
856 int pipeline_reads_index = pipeline_reads_initializer(fp_cpp, pipeline_reads, pipeclass);
858 int pipeline_res_stages_index = pipeline_res_stages_initializer(
859 fp_cpp, _pipeline, pipeline_res_stages, pipeclass);
861 int pipeline_res_cycles_index = pipeline_res_cycles_initializer(
862 fp_cpp, _pipeline, pipeline_res_cycles, pipeclass);
864 int pipeline_res_mask_index = pipeline_res_mask_initializer(
865 fp_cpp, _pipeline, pipeline_res_masks, pipeline_res_args, pipeclass);
867 #if 0
868 // Process the Resources
869 const PipeClassResourceForm *piperesource;
871 unsigned resources_used = 0;
872 unsigned exclusive_resources_used = 0;
873 unsigned resource_groups = 0;
874 for (pipeclass->_resUsage.reset();
875 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
876 int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
877 if (used_mask)
878 resource_groups++;
879 resources_used |= used_mask;
880 if ((used_mask & (used_mask-1)) == 0)
881 exclusive_resources_used |= used_mask;
882 }
884 if (resource_groups > 0) {
885 fprintf(fp_cpp, "static const uint pipeline_res_or_masks_%03d[%d] = {",
886 pipeclass->_num, resource_groups);
887 for (pipeclass->_resUsage.reset(), i = 1;
888 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL;
889 i++ ) {
890 int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
891 if (used_mask) {
892 fprintf(fp_cpp, " 0x%0*x%c", resource_count, used_mask, i < (int)resource_groups ? ',' : ' ');
893 }
894 }
895 fprintf(fp_cpp, "};\n\n");
896 }
897 #endif
899 // Create the pipeline class description
900 fprintf(fp_cpp, "static const Pipeline pipeline_class_%03d(",
901 pipeclass->_num);
902 if (maxWriteStage < 0)
903 fprintf(fp_cpp, "(uint)stage_undefined");
904 else if (maxMoreInstrs == 0)
905 fprintf(fp_cpp, "(uint)stage_%s", _pipeline->_stages.name(maxWriteStage));
906 else
907 fprintf(fp_cpp, "((uint)stage_%s)+%d", _pipeline->_stages.name(maxWriteStage), maxMoreInstrs);
908 fprintf(fp_cpp, ", %d, %s, %d, %d, %s, %s, %s, %s,\n",
909 paramcount,
910 pipeclass->hasFixedLatency() ? "true" : "false",
911 pipeclass->fixedLatency(),
912 pipeclass->InstructionCount(),
913 pipeclass->hasBranchDelay() ? "true" : "false",
914 pipeclass->hasMultipleBundles() ? "true" : "false",
915 pipeclass->forceSerialization() ? "true" : "false",
916 pipeclass->mayHaveNoCode() ? "true" : "false" );
917 if (paramcount > 0) {
918 fprintf(fp_cpp, "\n (enum machPipelineStages * const) pipeline_reads_%03d,\n ",
919 pipeline_reads_index+1);
920 }
921 else
922 fprintf(fp_cpp, " NULL,");
923 fprintf(fp_cpp, " (enum machPipelineStages * const) pipeline_res_stages_%03d,\n",
924 pipeline_res_stages_index+1);
925 fprintf(fp_cpp, " (uint * const) pipeline_res_cycles_%03d,\n",
926 pipeline_res_cycles_index+1);
927 fprintf(fp_cpp, " Pipeline_Use(%s, (Pipeline_Use_Element *)",
928 pipeline_res_args.name(pipeline_res_mask_index));
929 if (strlen(pipeline_res_masks.name(pipeline_res_mask_index)) > 0)
930 fprintf(fp_cpp, "&pipeline_res_mask_%03d[0]",
931 pipeline_res_mask_index+1);
932 else
933 fprintf(fp_cpp, "NULL");
934 fprintf(fp_cpp, "));\n");
935 }
937 // Generate the Node::latency method if _pipeline defined
938 fprintf(fp_cpp, "\n");
939 fprintf(fp_cpp, "//------------------Inter-Instruction Latency--------------------------------\n");
940 fprintf(fp_cpp, "uint Node::latency(uint i) {\n");
941 if (_pipeline) {
942 #if 0
943 fprintf(fp_cpp, "#ifndef PRODUCT\n");
944 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
945 fprintf(fp_cpp, " tty->print(\"# %%4d->latency(%%d)\\n\", _idx, i);\n");
946 fprintf(fp_cpp, " }\n");
947 fprintf(fp_cpp, "#endif\n");
948 #endif
949 fprintf(fp_cpp, " uint j;\n");
950 fprintf(fp_cpp, " // verify in legal range for inputs\n");
951 fprintf(fp_cpp, " assert(i < len(), \"index not in range\");\n\n");
952 fprintf(fp_cpp, " // verify input is not null\n");
953 fprintf(fp_cpp, " Node *pred = in(i);\n");
954 fprintf(fp_cpp, " if (!pred)\n return %d;\n\n",
955 non_operand_latency);
956 fprintf(fp_cpp, " if (pred->is_Proj())\n pred = pred->in(0);\n\n");
957 fprintf(fp_cpp, " // if either node does not have pipeline info, use default\n");
958 fprintf(fp_cpp, " const Pipeline *predpipe = pred->pipeline();\n");
959 fprintf(fp_cpp, " assert(predpipe, \"no predecessor pipeline info\");\n\n");
960 fprintf(fp_cpp, " if (predpipe->hasFixedLatency())\n return predpipe->fixedLatency();\n\n");
961 fprintf(fp_cpp, " const Pipeline *currpipe = pipeline();\n");
962 fprintf(fp_cpp, " assert(currpipe, \"no pipeline info\");\n\n");
963 fprintf(fp_cpp, " if (!is_Mach())\n return %d;\n\n",
964 node_latency);
965 fprintf(fp_cpp, " const MachNode *m = as_Mach();\n");
966 fprintf(fp_cpp, " j = m->oper_input_base();\n");
967 fprintf(fp_cpp, " if (i < j)\n return currpipe->functional_unit_latency(%d, predpipe);\n\n",
968 non_operand_latency);
969 fprintf(fp_cpp, " // determine which operand this is in\n");
970 fprintf(fp_cpp, " uint n = m->num_opnds();\n");
971 fprintf(fp_cpp, " int delta = %d;\n\n",
972 non_operand_latency);
973 fprintf(fp_cpp, " uint k;\n");
974 fprintf(fp_cpp, " for (k = 1; k < n; k++) {\n");
975 fprintf(fp_cpp, " j += m->_opnds[k]->num_edges();\n");
976 fprintf(fp_cpp, " if (i < j)\n");
977 fprintf(fp_cpp, " break;\n");
978 fprintf(fp_cpp, " }\n");
979 fprintf(fp_cpp, " if (k < n)\n");
980 fprintf(fp_cpp, " delta = currpipe->operand_latency(k,predpipe);\n\n");
981 fprintf(fp_cpp, " return currpipe->functional_unit_latency(delta, predpipe);\n");
982 }
983 else {
984 fprintf(fp_cpp, " // assert(false, \"pipeline functionality is not defined\");\n");
985 fprintf(fp_cpp, " return %d;\n",
986 non_operand_latency);
987 }
988 fprintf(fp_cpp, "}\n\n");
990 // Output the list of nop nodes
991 fprintf(fp_cpp, "// Descriptions for emitting different functional unit nops\n");
992 const char *nop;
993 int nopcnt = 0;
994 for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; nopcnt++ );
996 fprintf(fp_cpp, "void Bundle::initialize_nops(MachNode * nop_list[%d], Compile *C) {\n", nopcnt);
997 int i = 0;
998 for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; i++ ) {
999 fprintf(fp_cpp, " nop_list[%d] = (MachNode *) new (C) %sNode();\n", i, nop);
1000 }
1001 fprintf(fp_cpp, "};\n\n");
1002 fprintf(fp_cpp, "#ifndef PRODUCT\n");
1003 fprintf(fp_cpp, "void Bundle::dump() const {\n");
1004 fprintf(fp_cpp, " static const char * bundle_flags[] = {\n");
1005 fprintf(fp_cpp, " \"\",\n");
1006 fprintf(fp_cpp, " \"use nop delay\",\n");
1007 fprintf(fp_cpp, " \"use unconditional delay\",\n");
1008 fprintf(fp_cpp, " \"use conditional delay\",\n");
1009 fprintf(fp_cpp, " \"used in conditional delay\",\n");
1010 fprintf(fp_cpp, " \"used in unconditional delay\",\n");
1011 fprintf(fp_cpp, " \"used in all conditional delays\",\n");
1012 fprintf(fp_cpp, " };\n\n");
1014 fprintf(fp_cpp, " static const char *resource_names[%d] = {", _pipeline->_rescount);
1015 for (i = 0; i < _pipeline->_rescount; i++)
1016 fprintf(fp_cpp, " \"%s\"%c", _pipeline->_reslist.name(i), i < _pipeline->_rescount-1 ? ',' : ' ');
1017 fprintf(fp_cpp, "};\n\n");
1019 // See if the same string is in the table
1020 fprintf(fp_cpp, " bool needs_comma = false;\n\n");
1021 fprintf(fp_cpp, " if (_flags) {\n");
1022 fprintf(fp_cpp, " tty->print(\"%%s\", bundle_flags[_flags]);\n");
1023 fprintf(fp_cpp, " needs_comma = true;\n");
1024 fprintf(fp_cpp, " };\n");
1025 fprintf(fp_cpp, " if (instr_count()) {\n");
1026 fprintf(fp_cpp, " tty->print(\"%%s%%d instr%%s\", needs_comma ? \", \" : \"\", instr_count(), instr_count() != 1 ? \"s\" : \"\");\n");
1027 fprintf(fp_cpp, " needs_comma = true;\n");
1028 fprintf(fp_cpp, " };\n");
1029 fprintf(fp_cpp, " uint r = resources_used();\n");
1030 fprintf(fp_cpp, " if (r) {\n");
1031 fprintf(fp_cpp, " tty->print(\"%%sresource%%s:\", needs_comma ? \", \" : \"\", (r & (r-1)) != 0 ? \"s\" : \"\");\n");
1032 fprintf(fp_cpp, " for (uint i = 0; i < %d; i++)\n", _pipeline->_rescount);
1033 fprintf(fp_cpp, " if ((r & (1 << i)) != 0)\n");
1034 fprintf(fp_cpp, " tty->print(\" %%s\", resource_names[i]);\n");
1035 fprintf(fp_cpp, " needs_comma = true;\n");
1036 fprintf(fp_cpp, " };\n");
1037 fprintf(fp_cpp, " tty->print(\"\\n\");\n");
1038 fprintf(fp_cpp, "}\n");
1039 fprintf(fp_cpp, "#endif\n");
1040 }
1042 // ---------------------------------------------------------------------------
1043 //------------------------------Utilities to build Instruction Classes--------
1044 // ---------------------------------------------------------------------------
1046 static void defineOut_RegMask(FILE *fp, const char *node, const char *regMask) {
1047 fprintf(fp,"const RegMask &%sNode::out_RegMask() const { return (%s); }\n",
1048 node, regMask);
1049 }
1051 // Scan the peepmatch and output a test for each instruction
1052 static void check_peepmatch_instruction_tree(FILE *fp, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1053 int parent = -1;
1054 int inst_position = 0;
1055 const char* inst_name = NULL;
1056 int input = 0;
1057 fprintf(fp, " // Check instruction sub-tree\n");
1058 pmatch->reset();
1059 for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1060 inst_name != NULL;
1061 pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1062 // If this is not a placeholder
1063 if( ! pmatch->is_placeholder() ) {
1064 // Define temporaries 'inst#', based on parent and parent's input index
1065 if( parent != -1 ) { // root was initialized
1066 fprintf(fp, " inst%d = inst%d->in(%d);\n",
1067 inst_position, parent, input);
1068 }
1070 // When not the root
1071 // Test we have the correct instruction by comparing the rule
1072 if( parent != -1 ) {
1073 fprintf(fp, " matches = matches && ( inst%d->rule() == %s_rule );",
1074 inst_position, inst_name);
1075 }
1076 } else {
1077 // Check that user did not try to constrain a placeholder
1078 assert( ! pconstraint->constrains_instruction(inst_position),
1079 "fatal(): Can not constrain a placeholder instruction");
1080 }
1081 }
1082 }
1084 static void print_block_index(FILE *fp, int inst_position) {
1085 assert( inst_position >= 0, "Instruction number less than zero");
1086 fprintf(fp, "block_index");
1087 if( inst_position != 0 ) {
1088 fprintf(fp, " - %d", inst_position);
1089 }
1090 }
1092 // Scan the peepmatch and output a test for each instruction
1093 static void check_peepmatch_instruction_sequence(FILE *fp, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1094 int parent = -1;
1095 int inst_position = 0;
1096 const char* inst_name = NULL;
1097 int input = 0;
1098 fprintf(fp, " // Check instruction sub-tree\n");
1099 pmatch->reset();
1100 for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1101 inst_name != NULL;
1102 pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1103 // If this is not a placeholder
1104 if( ! pmatch->is_placeholder() ) {
1105 // Define temporaries 'inst#', based on parent and parent's input index
1106 if( parent != -1 ) { // root was initialized
1107 fprintf(fp, " // Identify previous instruction if inside this block\n");
1108 fprintf(fp, " if( ");
1109 print_block_index(fp, inst_position);
1110 fprintf(fp, " > 0 ) {\n Node *n = block->_nodes.at(");
1111 print_block_index(fp, inst_position);
1112 fprintf(fp, ");\n inst%d = (n->is_Mach()) ? ", inst_position);
1113 fprintf(fp, "n->as_Mach() : NULL;\n }\n");
1114 }
1116 // When not the root
1117 // Test we have the correct instruction by comparing the rule.
1118 if( parent != -1 ) {
1119 fprintf(fp, " matches = matches && (inst%d != NULL) && (inst%d->rule() == %s_rule);\n",
1120 inst_position, inst_position, inst_name);
1121 }
1122 } else {
1123 // Check that user did not try to constrain a placeholder
1124 assert( ! pconstraint->constrains_instruction(inst_position),
1125 "fatal(): Can not constrain a placeholder instruction");
1126 }
1127 }
1128 }
1130 // Build mapping for register indices, num_edges to input
1131 static void build_instruction_index_mapping( FILE *fp, FormDict &globals, PeepMatch *pmatch ) {
1132 int parent = -1;
1133 int inst_position = 0;
1134 const char* inst_name = NULL;
1135 int input = 0;
1136 fprintf(fp, " // Build map to register info\n");
1137 pmatch->reset();
1138 for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1139 inst_name != NULL;
1140 pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1141 // If this is not a placeholder
1142 if( ! pmatch->is_placeholder() ) {
1143 // Define temporaries 'inst#', based on self's inst_position
1144 InstructForm *inst = globals[inst_name]->is_instruction();
1145 if( inst != NULL ) {
1146 char inst_prefix[] = "instXXXX_";
1147 sprintf(inst_prefix, "inst%d_", inst_position);
1148 char receiver[] = "instXXXX->";
1149 sprintf(receiver, "inst%d->", inst_position);
1150 inst->index_temps( fp, globals, inst_prefix, receiver );
1151 }
1152 }
1153 }
1154 }
1156 // Generate tests for the constraints
1157 static void check_peepconstraints(FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1158 fprintf(fp, "\n");
1159 fprintf(fp, " // Check constraints on sub-tree-leaves\n");
1161 // Build mapping from num_edges to local variables
1162 build_instruction_index_mapping( fp, globals, pmatch );
1164 // Build constraint tests
1165 if( pconstraint != NULL ) {
1166 fprintf(fp, " matches = matches &&");
1167 bool first_constraint = true;
1168 while( pconstraint != NULL ) {
1169 // indentation and connecting '&&'
1170 const char *indentation = " ";
1171 fprintf(fp, "\n%s%s", indentation, (!first_constraint ? "&& " : " "));
1173 // Only have '==' relation implemented
1174 if( strcmp(pconstraint->_relation,"==") != 0 ) {
1175 assert( false, "Unimplemented()" );
1176 }
1178 // LEFT
1179 int left_index = pconstraint->_left_inst;
1180 const char *left_op = pconstraint->_left_op;
1181 // Access info on the instructions whose operands are compared
1182 InstructForm *inst_left = globals[pmatch->instruction_name(left_index)]->is_instruction();
1183 assert( inst_left, "Parser should guaranty this is an instruction");
1184 int left_op_base = inst_left->oper_input_base(globals);
1185 // Access info on the operands being compared
1186 int left_op_index = inst_left->operand_position(left_op, Component::USE);
1187 if( left_op_index == -1 ) {
1188 left_op_index = inst_left->operand_position(left_op, Component::DEF);
1189 if( left_op_index == -1 ) {
1190 left_op_index = inst_left->operand_position(left_op, Component::USE_DEF);
1191 }
1192 }
1193 assert( left_op_index != NameList::Not_in_list, "Did not find operand in instruction");
1194 ComponentList components_left = inst_left->_components;
1195 const char *left_comp_type = components_left.at(left_op_index)->_type;
1196 OpClassForm *left_opclass = globals[left_comp_type]->is_opclass();
1197 Form::InterfaceType left_interface_type = left_opclass->interface_type(globals);
1200 // RIGHT
1201 int right_op_index = -1;
1202 int right_index = pconstraint->_right_inst;
1203 const char *right_op = pconstraint->_right_op;
1204 if( right_index != -1 ) { // Match operand
1205 // Access info on the instructions whose operands are compared
1206 InstructForm *inst_right = globals[pmatch->instruction_name(right_index)]->is_instruction();
1207 assert( inst_right, "Parser should guaranty this is an instruction");
1208 int right_op_base = inst_right->oper_input_base(globals);
1209 // Access info on the operands being compared
1210 right_op_index = inst_right->operand_position(right_op, Component::USE);
1211 if( right_op_index == -1 ) {
1212 right_op_index = inst_right->operand_position(right_op, Component::DEF);
1213 if( right_op_index == -1 ) {
1214 right_op_index = inst_right->operand_position(right_op, Component::USE_DEF);
1215 }
1216 }
1217 assert( right_op_index != NameList::Not_in_list, "Did not find operand in instruction");
1218 ComponentList components_right = inst_right->_components;
1219 const char *right_comp_type = components_right.at(right_op_index)->_type;
1220 OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1221 Form::InterfaceType right_interface_type = right_opclass->interface_type(globals);
1222 assert( right_interface_type == left_interface_type, "Both must be same interface");
1224 } else { // Else match register
1225 // assert( false, "should be a register" );
1226 }
1228 //
1229 // Check for equivalence
1230 //
1231 // fprintf(fp, "phase->eqv( ");
1232 // fprintf(fp, "inst%d->in(%d+%d) /* %s */, inst%d->in(%d+%d) /* %s */",
1233 // left_index, left_op_base, left_op_index, left_op,
1234 // right_index, right_op_base, right_op_index, right_op );
1235 // fprintf(fp, ")");
1236 //
1237 switch( left_interface_type ) {
1238 case Form::register_interface: {
1239 // Check that they are allocated to the same register
1240 // Need parameter for index position if not result operand
1241 char left_reg_index[] = ",instXXXX_idxXXXX";
1242 if( left_op_index != 0 ) {
1243 assert( (left_index <= 9999) && (left_op_index <= 9999), "exceed string size");
1244 // Must have index into operands
1245 sprintf(left_reg_index,",inst%d_idx%d", left_index, left_op_index);
1246 } else {
1247 strcpy(left_reg_index, "");
1248 }
1249 fprintf(fp, "(inst%d->_opnds[%d]->reg(ra_,inst%d%s) /* %d.%s */",
1250 left_index, left_op_index, left_index, left_reg_index, left_index, left_op );
1251 fprintf(fp, " == ");
1253 if( right_index != -1 ) {
1254 char right_reg_index[18] = ",instXXXX_idxXXXX";
1255 if( right_op_index != 0 ) {
1256 assert( (right_index <= 9999) && (right_op_index <= 9999), "exceed string size");
1257 // Must have index into operands
1258 sprintf(right_reg_index,",inst%d_idx%d", right_index, right_op_index);
1259 } else {
1260 strcpy(right_reg_index, "");
1261 }
1262 fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->reg(ra_,inst%d%s)",
1263 right_index, right_op, right_index, right_op_index, right_index, right_reg_index );
1264 } else {
1265 fprintf(fp, "%s_enc", right_op );
1266 }
1267 fprintf(fp,")");
1268 break;
1269 }
1270 case Form::constant_interface: {
1271 // Compare the '->constant()' values
1272 fprintf(fp, "(inst%d->_opnds[%d]->constant() /* %d.%s */",
1273 left_index, left_op_index, left_index, left_op );
1274 fprintf(fp, " == ");
1275 fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->constant())",
1276 right_index, right_op, right_index, right_op_index );
1277 break;
1278 }
1279 case Form::memory_interface: {
1280 // Compare 'base', 'index', 'scale', and 'disp'
1281 // base
1282 fprintf(fp, "( \n");
1283 fprintf(fp, " (inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d) /* %d.%s$$base */",
1284 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1285 fprintf(fp, " == ");
1286 fprintf(fp, "/* %d.%s$$base */ inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d)) &&\n",
1287 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1288 // index
1289 fprintf(fp, " (inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d) /* %d.%s$$index */",
1290 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1291 fprintf(fp, " == ");
1292 fprintf(fp, "/* %d.%s$$index */ inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d)) &&\n",
1293 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1294 // scale
1295 fprintf(fp, " (inst%d->_opnds[%d]->scale() /* %d.%s$$scale */",
1296 left_index, left_op_index, left_index, left_op );
1297 fprintf(fp, " == ");
1298 fprintf(fp, "/* %d.%s$$scale */ inst%d->_opnds[%d]->scale()) &&\n",
1299 right_index, right_op, right_index, right_op_index );
1300 // disp
1301 fprintf(fp, " (inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d) /* %d.%s$$disp */",
1302 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1303 fprintf(fp, " == ");
1304 fprintf(fp, "/* %d.%s$$disp */ inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d))\n",
1305 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1306 fprintf(fp, ") \n");
1307 break;
1308 }
1309 case Form::conditional_interface: {
1310 // Compare the condition code being tested
1311 assert( false, "Unimplemented()" );
1312 break;
1313 }
1314 default: {
1315 assert( false, "ShouldNotReachHere()" );
1316 break;
1317 }
1318 }
1320 // Advance to next constraint
1321 pconstraint = pconstraint->next();
1322 first_constraint = false;
1323 }
1325 fprintf(fp, ";\n");
1326 }
1327 }
1329 // // EXPERIMENTAL -- TEMPORARY code
1330 // static Form::DataType get_operand_type(FormDict &globals, InstructForm *instr, const char *op_name ) {
1331 // int op_index = instr->operand_position(op_name, Component::USE);
1332 // if( op_index == -1 ) {
1333 // op_index = instr->operand_position(op_name, Component::DEF);
1334 // if( op_index == -1 ) {
1335 // op_index = instr->operand_position(op_name, Component::USE_DEF);
1336 // }
1337 // }
1338 // assert( op_index != NameList::Not_in_list, "Did not find operand in instruction");
1339 //
1340 // ComponentList components_right = instr->_components;
1341 // char *right_comp_type = components_right.at(op_index)->_type;
1342 // OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1343 // Form::InterfaceType right_interface_type = right_opclass->interface_type(globals);
1344 //
1345 // return;
1346 // }
1348 // Construct the new sub-tree
1349 static void generate_peepreplace( FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint, PeepReplace *preplace, int max_position ) {
1350 fprintf(fp, " // IF instructions and constraints matched\n");
1351 fprintf(fp, " if( matches ) {\n");
1352 fprintf(fp, " // generate the new sub-tree\n");
1353 fprintf(fp, " assert( true, \"Debug stopping point\");\n");
1354 if( preplace != NULL ) {
1355 // Get the root of the new sub-tree
1356 const char *root_inst = NULL;
1357 preplace->next_instruction(root_inst);
1358 InstructForm *root_form = globals[root_inst]->is_instruction();
1359 assert( root_form != NULL, "Replacement instruction was not previously defined");
1360 fprintf(fp, " %sNode *root = new (C) %sNode();\n", root_inst, root_inst);
1362 int inst_num;
1363 const char *op_name;
1364 int opnds_index = 0; // define result operand
1365 // Then install the use-operands for the new sub-tree
1366 // preplace->reset(); // reset breaks iteration
1367 for( preplace->next_operand( inst_num, op_name );
1368 op_name != NULL;
1369 preplace->next_operand( inst_num, op_name ) ) {
1370 InstructForm *inst_form;
1371 inst_form = globals[pmatch->instruction_name(inst_num)]->is_instruction();
1372 assert( inst_form, "Parser should guaranty this is an instruction");
1373 int inst_op_num = inst_form->operand_position(op_name, Component::USE);
1374 if( inst_op_num == NameList::Not_in_list )
1375 inst_op_num = inst_form->operand_position(op_name, Component::USE_DEF);
1376 assert( inst_op_num != NameList::Not_in_list, "Did not find operand as USE");
1377 // find the name of the OperandForm from the local name
1378 const Form *form = inst_form->_localNames[op_name];
1379 OperandForm *op_form = form->is_operand();
1380 if( opnds_index == 0 ) {
1381 // Initial setup of new instruction
1382 fprintf(fp, " // ----- Initial setup -----\n");
1383 //
1384 // Add control edge for this node
1385 fprintf(fp, " root->add_req(_in[0]); // control edge\n");
1386 // Add unmatched edges from root of match tree
1387 int op_base = root_form->oper_input_base(globals);
1388 for( int unmatched_edge = 1; unmatched_edge < op_base; ++unmatched_edge ) {
1389 fprintf(fp, " root->add_req(inst%d->in(%d)); // unmatched ideal edge\n",
1390 inst_num, unmatched_edge);
1391 }
1392 // If new instruction captures bottom type
1393 if( root_form->captures_bottom_type(globals) ) {
1394 // Get bottom type from instruction whose result we are replacing
1395 fprintf(fp, " root->_bottom_type = inst%d->bottom_type();\n", inst_num);
1396 }
1397 // Define result register and result operand
1398 fprintf(fp, " ra_->add_reference(root, inst%d);\n", inst_num);
1399 fprintf(fp, " ra_->set_oop (root, ra_->is_oop(inst%d));\n", inst_num);
1400 fprintf(fp, " ra_->set_pair(root->_idx, ra_->get_reg_second(inst%d), ra_->get_reg_first(inst%d));\n", inst_num, inst_num);
1401 fprintf(fp, " root->_opnds[0] = inst%d->_opnds[0]->clone(C); // result\n", inst_num);
1402 fprintf(fp, " // ----- Done with initial setup -----\n");
1403 } else {
1404 if( (op_form == NULL) || (op_form->is_base_constant(globals) == Form::none) ) {
1405 // Do not have ideal edges for constants after matching
1406 fprintf(fp, " for( unsigned x%d = inst%d_idx%d; x%d < inst%d_idx%d; x%d++ )\n",
1407 inst_op_num, inst_num, inst_op_num,
1408 inst_op_num, inst_num, inst_op_num+1, inst_op_num );
1409 fprintf(fp, " root->add_req( inst%d->in(x%d) );\n",
1410 inst_num, inst_op_num );
1411 } else {
1412 fprintf(fp, " // no ideal edge for constants after matching\n");
1413 }
1414 fprintf(fp, " root->_opnds[%d] = inst%d->_opnds[%d]->clone(C);\n",
1415 opnds_index, inst_num, inst_op_num );
1416 }
1417 ++opnds_index;
1418 }
1419 }else {
1420 // Replacing subtree with empty-tree
1421 assert( false, "ShouldNotReachHere();");
1422 }
1424 // Return the new sub-tree
1425 fprintf(fp, " deleted = %d;\n", max_position+1 /*zero to one based*/);
1426 fprintf(fp, " return root; // return new root;\n");
1427 fprintf(fp, " }\n");
1428 }
1431 // Define the Peephole method for an instruction node
1432 void ArchDesc::definePeephole(FILE *fp, InstructForm *node) {
1433 // Generate Peephole function header
1434 fprintf(fp, "MachNode *%sNode::peephole( Block *block, int block_index, PhaseRegAlloc *ra_, int &deleted, Compile* C ) {\n", node->_ident);
1435 fprintf(fp, " bool matches = true;\n");
1437 // Identify the maximum instruction position,
1438 // generate temporaries that hold current instruction
1439 //
1440 // MachNode *inst0 = NULL;
1441 // ...
1442 // MachNode *instMAX = NULL;
1443 //
1444 int max_position = 0;
1445 Peephole *peep;
1446 for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1447 PeepMatch *pmatch = peep->match();
1448 assert( pmatch != NULL, "fatal(), missing peepmatch rule");
1449 if( max_position < pmatch->max_position() ) max_position = pmatch->max_position();
1450 }
1451 for( int i = 0; i <= max_position; ++i ) {
1452 if( i == 0 ) {
1453 fprintf(fp, " MachNode *inst0 = this;\n");
1454 } else {
1455 fprintf(fp, " MachNode *inst%d = NULL;\n", i);
1456 }
1457 }
1459 // For each peephole rule in architecture description
1460 // Construct a test for the desired instruction sub-tree
1461 // then check the constraints
1462 // If these match, Generate the new subtree
1463 for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1464 int peephole_number = peep->peephole_number();
1465 PeepMatch *pmatch = peep->match();
1466 PeepConstraint *pconstraint = peep->constraints();
1467 PeepReplace *preplace = peep->replacement();
1469 // Root of this peephole is the current MachNode
1470 assert( true, // %%name?%% strcmp( node->_ident, pmatch->name(0) ) == 0,
1471 "root of PeepMatch does not match instruction");
1473 // Make each peephole rule individually selectable
1474 fprintf(fp, " if( (OptoPeepholeAt == -1) || (OptoPeepholeAt==%d) ) {\n", peephole_number);
1475 fprintf(fp, " matches = true;\n");
1476 // Scan the peepmatch and output a test for each instruction
1477 check_peepmatch_instruction_sequence( fp, pmatch, pconstraint );
1479 // Check constraints and build replacement inside scope
1480 fprintf(fp, " // If instruction subtree matches\n");
1481 fprintf(fp, " if( matches ) {\n");
1483 // Generate tests for the constraints
1484 check_peepconstraints( fp, _globalNames, pmatch, pconstraint );
1486 // Construct the new sub-tree
1487 generate_peepreplace( fp, _globalNames, pmatch, pconstraint, preplace, max_position );
1489 // End of scope for this peephole's constraints
1490 fprintf(fp, " }\n");
1491 // Closing brace '}' to make each peephole rule individually selectable
1492 fprintf(fp, " } // end of peephole rule #%d\n", peephole_number);
1493 fprintf(fp, "\n");
1494 }
1496 fprintf(fp, " return NULL; // No peephole rules matched\n");
1497 fprintf(fp, "}\n");
1498 fprintf(fp, "\n");
1499 }
1501 // Define the Expand method for an instruction node
1502 void ArchDesc::defineExpand(FILE *fp, InstructForm *node) {
1503 unsigned cnt = 0; // Count nodes we have expand into
1504 unsigned i;
1506 // Generate Expand function header
1507 fprintf(fp, "MachNode* %sNode::Expand(State* state, Node_List& proj_list, Node* mem) {\n", node->_ident);
1508 fprintf(fp, " Compile* C = Compile::current();\n");
1509 // Generate expand code
1510 if( node->expands() ) {
1511 const char *opid;
1512 int new_pos, exp_pos;
1513 const char *new_id = NULL;
1514 const Form *frm = NULL;
1515 InstructForm *new_inst = NULL;
1516 OperandForm *new_oper = NULL;
1517 unsigned numo = node->num_opnds() +
1518 node->_exprule->_newopers.count();
1520 // If necessary, generate any operands created in expand rule
1521 if (node->_exprule->_newopers.count()) {
1522 for(node->_exprule->_newopers.reset();
1523 (new_id = node->_exprule->_newopers.iter()) != NULL; cnt++) {
1524 frm = node->_localNames[new_id];
1525 assert(frm, "Invalid entry in new operands list of expand rule");
1526 new_oper = frm->is_operand();
1527 char *tmp = (char *)node->_exprule->_newopconst[new_id];
1528 if (tmp == NULL) {
1529 fprintf(fp," MachOper *op%d = new (C) %sOper();\n",
1530 cnt, new_oper->_ident);
1531 }
1532 else {
1533 fprintf(fp," MachOper *op%d = new (C) %sOper(%s);\n",
1534 cnt, new_oper->_ident, tmp);
1535 }
1536 }
1537 }
1538 cnt = 0;
1539 // Generate the temps to use for DAG building
1540 for(i = 0; i < numo; i++) {
1541 if (i < node->num_opnds()) {
1542 fprintf(fp," MachNode *tmp%d = this;\n", i);
1543 }
1544 else {
1545 fprintf(fp," MachNode *tmp%d = NULL;\n", i);
1546 }
1547 }
1548 // Build mapping from num_edges to local variables
1549 fprintf(fp," unsigned num0 = 0;\n");
1550 for( i = 1; i < node->num_opnds(); i++ ) {
1551 fprintf(fp," unsigned num%d = opnd_array(%d)->num_edges();\n",i,i);
1552 }
1554 // Build a mapping from operand index to input edges
1555 fprintf(fp," unsigned idx0 = oper_input_base();\n");
1557 // The order in which the memory input is added to a node is very
1558 // strange. Store nodes get a memory input before Expand is
1559 // called and other nodes get it afterwards or before depending on
1560 // match order so oper_input_base is wrong during expansion. This
1561 // code adjusts it so that expansion will work correctly.
1562 int has_memory_edge = node->_matrule->needs_ideal_memory_edge(_globalNames);
1563 if (has_memory_edge) {
1564 fprintf(fp," if (mem == (Node*)1) {\n");
1565 fprintf(fp," idx0--; // Adjust base because memory edge hasn't been inserted yet\n");
1566 fprintf(fp," }\n");
1567 }
1569 for( i = 0; i < node->num_opnds(); i++ ) {
1570 fprintf(fp," unsigned idx%d = idx%d + num%d;\n",
1571 i+1,i,i);
1572 }
1574 // Declare variable to hold root of expansion
1575 fprintf(fp," MachNode *result = NULL;\n");
1577 // Iterate over the instructions 'node' expands into
1578 ExpandRule *expand = node->_exprule;
1579 NameAndList *expand_instr = NULL;
1580 for(expand->reset_instructions();
1581 (expand_instr = expand->iter_instructions()) != NULL; cnt++) {
1582 new_id = expand_instr->name();
1584 InstructForm* expand_instruction = (InstructForm*)globalAD->globalNames()[new_id];
1585 if (expand_instruction->has_temps()) {
1586 globalAD->syntax_err(node->_linenum, "In %s: expand rules using instructs with TEMPs aren't supported: %s",
1587 node->_ident, new_id);
1588 }
1590 // Build the node for the instruction
1591 fprintf(fp,"\n %sNode *n%d = new (C) %sNode();\n", new_id, cnt, new_id);
1592 // Add control edge for this node
1593 fprintf(fp," n%d->add_req(_in[0]);\n", cnt);
1594 // Build the operand for the value this node defines.
1595 Form *form = (Form*)_globalNames[new_id];
1596 assert( form, "'new_id' must be a defined form name");
1597 // Grab the InstructForm for the new instruction
1598 new_inst = form->is_instruction();
1599 assert( new_inst, "'new_id' must be an instruction name");
1600 if( node->is_ideal_if() && new_inst->is_ideal_if() ) {
1601 fprintf(fp, " ((MachIfNode*)n%d)->_prob = _prob;\n",cnt);
1602 fprintf(fp, " ((MachIfNode*)n%d)->_fcnt = _fcnt;\n",cnt);
1603 }
1605 if( node->is_ideal_fastlock() && new_inst->is_ideal_fastlock() ) {
1606 fprintf(fp, " ((MachFastLockNode*)n%d)->_counters = _counters;\n",cnt);
1607 }
1609 const char *resultOper = new_inst->reduce_result();
1610 fprintf(fp," n%d->set_opnd_array(0, state->MachOperGenerator( %s, C ));\n",
1611 cnt, machOperEnum(resultOper));
1613 // get the formal operand NameList
1614 NameList *formal_lst = &new_inst->_parameters;
1615 formal_lst->reset();
1617 // Handle any memory operand
1618 int memory_operand = new_inst->memory_operand(_globalNames);
1619 if( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
1620 int node_mem_op = node->memory_operand(_globalNames);
1621 assert( node_mem_op != InstructForm::NO_MEMORY_OPERAND,
1622 "expand rule member needs memory but top-level inst doesn't have any" );
1623 if (has_memory_edge) {
1624 // Copy memory edge
1625 fprintf(fp," if (mem != (Node*)1) {\n");
1626 fprintf(fp," n%d->add_req(_in[1]);\t// Add memory edge\n", cnt);
1627 fprintf(fp," }\n");
1628 }
1629 }
1631 // Iterate over the new instruction's operands
1632 int prev_pos = -1;
1633 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) {
1634 // Use 'parameter' at current position in list of new instruction's formals
1635 // instead of 'opid' when looking up info internal to new_inst
1636 const char *parameter = formal_lst->iter();
1637 // Check for an operand which is created in the expand rule
1638 if ((exp_pos = node->_exprule->_newopers.index(opid)) != -1) {
1639 new_pos = new_inst->operand_position(parameter,Component::USE);
1640 exp_pos += node->num_opnds();
1641 // If there is no use of the created operand, just skip it
1642 if (new_pos != -1) {
1643 //Copy the operand from the original made above
1644 fprintf(fp," n%d->set_opnd_array(%d, op%d->clone(C)); // %s\n",
1645 cnt, new_pos, exp_pos-node->num_opnds(), opid);
1646 // Check for who defines this operand & add edge if needed
1647 fprintf(fp," if(tmp%d != NULL)\n", exp_pos);
1648 fprintf(fp," n%d->add_req(tmp%d);\n", cnt, exp_pos);
1649 }
1650 }
1651 else {
1652 // Use operand name to get an index into instruction component list
1653 // ins = (InstructForm *) _globalNames[new_id];
1654 exp_pos = node->operand_position_format(opid);
1655 assert(exp_pos != -1, "Bad expand rule");
1656 if (prev_pos > exp_pos && expand_instruction->_matrule != NULL) {
1657 // For the add_req calls below to work correctly they need
1658 // to added in the same order that a match would add them.
1659 // This means that they would need to be in the order of
1660 // the components list instead of the formal parameters.
1661 // This is a sort of hidden invariant that previously
1662 // wasn't checked and could lead to incorrectly
1663 // constructed nodes.
1664 syntax_err(node->_linenum, "For expand in %s to work, parameter declaration order in %s must follow matchrule\n",
1665 node->_ident, new_inst->_ident);
1666 }
1667 prev_pos = exp_pos;
1669 new_pos = new_inst->operand_position(parameter,Component::USE);
1670 if (new_pos != -1) {
1671 // Copy the operand from the ExpandNode to the new node
1672 fprintf(fp," n%d->set_opnd_array(%d, opnd_array(%d)->clone(C)); // %s\n",
1673 cnt, new_pos, exp_pos, opid);
1674 // For each operand add appropriate input edges by looking at tmp's
1675 fprintf(fp," if(tmp%d == this) {\n", exp_pos);
1676 // Grab corresponding edges from ExpandNode and insert them here
1677 fprintf(fp," for(unsigned i = 0; i < num%d; i++) {\n", exp_pos);
1678 fprintf(fp," n%d->add_req(_in[i + idx%d]);\n", cnt, exp_pos);
1679 fprintf(fp," }\n");
1680 fprintf(fp," }\n");
1681 // This value is generated by one of the new instructions
1682 fprintf(fp," else n%d->add_req(tmp%d);\n", cnt, exp_pos);
1683 }
1684 }
1686 // Update the DAG tmp's for values defined by this instruction
1687 int new_def_pos = new_inst->operand_position(parameter,Component::DEF);
1688 Effect *eform = (Effect *)new_inst->_effects[parameter];
1689 // If this operand is a definition in either an effects rule
1690 // or a match rule
1691 if((eform) && (is_def(eform->_use_def))) {
1692 // Update the temp associated with this operand
1693 fprintf(fp," tmp%d = n%d;\n", exp_pos, cnt);
1694 }
1695 else if( new_def_pos != -1 ) {
1696 // Instruction defines a value but user did not declare it
1697 // in the 'effect' clause
1698 fprintf(fp," tmp%d = n%d;\n", exp_pos, cnt);
1699 }
1700 } // done iterating over a new instruction's operands
1702 // Invoke Expand() for the newly created instruction.
1703 fprintf(fp," result = n%d->Expand( state, proj_list, mem );\n", cnt);
1704 assert( !new_inst->expands(), "Do not have complete support for recursive expansion");
1705 } // done iterating over new instructions
1706 fprintf(fp,"\n");
1707 } // done generating expand rule
1709 // Generate projections for instruction's additional DEFs and KILLs
1710 if( ! node->expands() && (node->needs_projections() || node->has_temps())) {
1711 // Get string representing the MachNode that projections point at
1712 const char *machNode = "this";
1713 // Generate the projections
1714 fprintf(fp," // Add projection edges for additional defs or kills\n");
1716 // Examine each component to see if it is a DEF or KILL
1717 node->_components.reset();
1718 // Skip the first component, if already handled as (SET dst (...))
1719 Component *comp = NULL;
1720 // For kills, the choice of projection numbers is arbitrary
1721 int proj_no = 1;
1722 bool declared_def = false;
1723 bool declared_kill = false;
1725 while( (comp = node->_components.iter()) != NULL ) {
1726 // Lookup register class associated with operand type
1727 Form *form = (Form*)_globalNames[comp->_type];
1728 assert( form, "component type must be a defined form");
1729 OperandForm *op = form->is_operand();
1731 if (comp->is(Component::TEMP)) {
1732 fprintf(fp, " // TEMP %s\n", comp->_name);
1733 if (!declared_def) {
1734 // Define the variable "def" to hold new MachProjNodes
1735 fprintf(fp, " MachTempNode *def;\n");
1736 declared_def = true;
1737 }
1738 if (op && op->_interface && op->_interface->is_RegInterface()) {
1739 fprintf(fp," def = new (C) MachTempNode(state->MachOperGenerator( %s, C ));\n",
1740 machOperEnum(op->_ident));
1741 fprintf(fp," add_req(def);\n");
1742 // The operand for TEMP is already constructed during
1743 // this mach node construction, see buildMachNode().
1744 //
1745 // int idx = node->operand_position_format(comp->_name);
1746 // fprintf(fp," set_opnd_array(%d, state->MachOperGenerator( %s, C ));\n",
1747 // idx, machOperEnum(op->_ident));
1748 } else {
1749 assert(false, "can't have temps which aren't registers");
1750 }
1751 } else if (comp->isa(Component::KILL)) {
1752 fprintf(fp, " // DEF/KILL %s\n", comp->_name);
1754 if (!declared_kill) {
1755 // Define the variable "kill" to hold new MachProjNodes
1756 fprintf(fp, " MachProjNode *kill;\n");
1757 declared_kill = true;
1758 }
1760 assert( op, "Support additional KILLS for base operands");
1761 const char *regmask = reg_mask(*op);
1762 const char *ideal_type = op->ideal_type(_globalNames, _register);
1764 if (!op->is_bound_register()) {
1765 syntax_err(node->_linenum, "In %s only bound registers can be killed: %s %s\n",
1766 node->_ident, comp->_type, comp->_name);
1767 }
1769 fprintf(fp," kill = ");
1770 fprintf(fp,"new (C, 1) MachProjNode( %s, %d, (%s), Op_%s );\n",
1771 machNode, proj_no++, regmask, ideal_type);
1772 fprintf(fp," proj_list.push(kill);\n");
1773 }
1774 }
1775 }
1777 if( !node->expands() && node->_matrule != NULL ) {
1778 // Remove duplicated operands and inputs which use the same name.
1779 // Seach through match operands for the same name usage.
1780 uint cur_num_opnds = node->num_opnds();
1781 if( cur_num_opnds > 1 && cur_num_opnds != node->num_unique_opnds() ) {
1782 Component *comp = NULL;
1783 // Build mapping from num_edges to local variables
1784 fprintf(fp," unsigned num0 = 0;\n");
1785 for( i = 1; i < cur_num_opnds; i++ ) {
1786 fprintf(fp," unsigned num%d = opnd_array(%d)->num_edges();\n",i,i);
1787 }
1788 // Build a mapping from operand index to input edges
1789 fprintf(fp," unsigned idx0 = oper_input_base();\n");
1790 for( i = 0; i < cur_num_opnds; i++ ) {
1791 fprintf(fp," unsigned idx%d = idx%d + num%d;\n",
1792 i+1,i,i);
1793 }
1795 uint new_num_opnds = 1;
1796 node->_components.reset();
1797 // Skip first unique operands.
1798 for( i = 1; i < cur_num_opnds; i++ ) {
1799 comp = node->_components.iter();
1800 if( (int)i != node->unique_opnds_idx(i) ) {
1801 break;
1802 }
1803 new_num_opnds++;
1804 }
1805 // Replace not unique operands with next unique operands.
1806 for( ; i < cur_num_opnds; i++ ) {
1807 comp = node->_components.iter();
1808 int j = node->unique_opnds_idx(i);
1809 // unique_opnds_idx(i) is unique if unique_opnds_idx(j) is not unique.
1810 if( j != node->unique_opnds_idx(j) ) {
1811 fprintf(fp," set_opnd_array(%d, opnd_array(%d)->clone(C)); // %s\n",
1812 new_num_opnds, i, comp->_name);
1813 // delete not unique edges here
1814 fprintf(fp," for(unsigned i = 0; i < num%d; i++) {\n", i);
1815 fprintf(fp," set_req(i + idx%d, _in[i + idx%d]);\n", new_num_opnds, i);
1816 fprintf(fp," }\n");
1817 fprintf(fp," num%d = num%d;\n", new_num_opnds, i);
1818 fprintf(fp," idx%d = idx%d + num%d;\n", new_num_opnds+1, new_num_opnds, new_num_opnds);
1819 new_num_opnds++;
1820 }
1821 }
1822 // delete the rest of edges
1823 fprintf(fp," for(int i = idx%d - 1; i >= (int)idx%d; i--) {\n", cur_num_opnds, new_num_opnds);
1824 fprintf(fp," del_req(i);\n");
1825 fprintf(fp," }\n");
1826 fprintf(fp," _num_opnds = %d;\n", new_num_opnds);
1827 assert(new_num_opnds == node->num_unique_opnds(), "what?");
1828 }
1829 }
1831 // If the node is a MachConstantNode, insert the MachConstantBaseNode edge.
1832 // NOTE: this edge must be the last input (see MachConstantNode::mach_constant_base_node_input).
1833 if (node->is_mach_constant()) {
1834 fprintf(fp," add_req(C->mach_constant_base_node());\n");
1835 }
1837 fprintf(fp,"\n");
1838 if( node->expands() ) {
1839 fprintf(fp," return result;\n");
1840 } else {
1841 fprintf(fp," return this;\n");
1842 }
1843 fprintf(fp,"}\n");
1844 fprintf(fp,"\n");
1845 }
1848 //------------------------------Emit Routines----------------------------------
1849 // Special classes and routines for defining node emit routines which output
1850 // target specific instruction object encodings.
1851 // Define the ___Node::emit() routine
1852 //
1853 // (1) void ___Node::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
1854 // (2) // ... encoding defined by user
1855 // (3)
1856 // (4) }
1857 //
1859 class DefineEmitState {
1860 private:
1861 enum reloc_format { RELOC_NONE = -1,
1862 RELOC_IMMEDIATE = 0,
1863 RELOC_DISP = 1,
1864 RELOC_CALL_DISP = 2 };
1865 enum literal_status{ LITERAL_NOT_SEEN = 0,
1866 LITERAL_SEEN = 1,
1867 LITERAL_ACCESSED = 2,
1868 LITERAL_OUTPUT = 3 };
1869 // Temporaries that describe current operand
1870 bool _cleared;
1871 OpClassForm *_opclass;
1872 OperandForm *_operand;
1873 int _operand_idx;
1874 const char *_local_name;
1875 const char *_operand_name;
1876 bool _doing_disp;
1877 bool _doing_constant;
1878 Form::DataType _constant_type;
1879 DefineEmitState::literal_status _constant_status;
1880 DefineEmitState::literal_status _reg_status;
1881 bool _doing_emit8;
1882 bool _doing_emit_d32;
1883 bool _doing_emit_d16;
1884 bool _doing_emit_hi;
1885 bool _doing_emit_lo;
1886 bool _may_reloc;
1887 bool _must_reloc;
1888 reloc_format _reloc_form;
1889 const char * _reloc_type;
1890 bool _processing_noninput;
1892 NameList _strings_to_emit;
1894 // Stable state, set by constructor
1895 ArchDesc &_AD;
1896 FILE *_fp;
1897 EncClass &_encoding;
1898 InsEncode &_ins_encode;
1899 InstructForm &_inst;
1901 public:
1902 DefineEmitState(FILE *fp, ArchDesc &AD, EncClass &encoding,
1903 InsEncode &ins_encode, InstructForm &inst)
1904 : _AD(AD), _fp(fp), _encoding(encoding), _ins_encode(ins_encode), _inst(inst) {
1905 clear();
1906 }
1908 void clear() {
1909 _cleared = true;
1910 _opclass = NULL;
1911 _operand = NULL;
1912 _operand_idx = 0;
1913 _local_name = "";
1914 _operand_name = "";
1915 _doing_disp = false;
1916 _doing_constant= false;
1917 _constant_type = Form::none;
1918 _constant_status = LITERAL_NOT_SEEN;
1919 _reg_status = LITERAL_NOT_SEEN;
1920 _doing_emit8 = false;
1921 _doing_emit_d32= false;
1922 _doing_emit_d16= false;
1923 _doing_emit_hi = false;
1924 _doing_emit_lo = false;
1925 _may_reloc = false;
1926 _must_reloc = false;
1927 _reloc_form = RELOC_NONE;
1928 _reloc_type = AdlcVMDeps::none_reloc_type();
1929 _strings_to_emit.clear();
1930 }
1932 // Track necessary state when identifying a replacement variable
1933 void update_state(const char *rep_var) {
1934 // A replacement variable or one of its subfields
1935 // Obtain replacement variable from list
1936 if ( (*rep_var) != '$' ) {
1937 // A replacement variable, '$' prefix
1938 // check_rep_var( rep_var );
1939 if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
1940 // No state needed.
1941 assert( _opclass == NULL,
1942 "'primary', 'secondary' and 'tertiary' don't follow operand.");
1943 }
1944 else if ((strcmp(rep_var, "constanttablebase") == 0) ||
1945 (strcmp(rep_var, "constantoffset") == 0) ||
1946 (strcmp(rep_var, "constantaddress") == 0)) {
1947 if (!_inst.is_mach_constant()) {
1948 _AD.syntax_err(_encoding._linenum,
1949 "Replacement variable %s not allowed in instruct %s (only in MachConstantNode).\n",
1950 rep_var, _encoding._name);
1951 }
1952 }
1953 else {
1954 // Lookup its position in parameter list
1955 int param_no = _encoding.rep_var_index(rep_var);
1956 if ( param_no == -1 ) {
1957 _AD.syntax_err( _encoding._linenum,
1958 "Replacement variable %s not found in enc_class %s.\n",
1959 rep_var, _encoding._name);
1960 }
1962 // Lookup the corresponding ins_encode parameter
1963 const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
1964 if (inst_rep_var == NULL) {
1965 _AD.syntax_err( _ins_encode._linenum,
1966 "Parameter %s not passed to enc_class %s from instruct %s.\n",
1967 rep_var, _encoding._name, _inst._ident);
1968 }
1970 // Check if instruction's actual parameter is a local name in the instruction
1971 const Form *local = _inst._localNames[inst_rep_var];
1972 OpClassForm *opc = (local != NULL) ? local->is_opclass() : NULL;
1973 // Note: assert removed to allow constant and symbolic parameters
1974 // assert( opc, "replacement variable was not found in local names");
1975 // Lookup the index position iff the replacement variable is a localName
1976 int idx = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
1978 if ( idx != -1 ) {
1979 // This is a local in the instruction
1980 // Update local state info.
1981 _opclass = opc;
1982 _operand_idx = idx;
1983 _local_name = rep_var;
1984 _operand_name = inst_rep_var;
1986 // !!!!!
1987 // Do not support consecutive operands.
1988 assert( _operand == NULL, "Unimplemented()");
1989 _operand = opc->is_operand();
1990 }
1991 else if( ADLParser::is_literal_constant(inst_rep_var) ) {
1992 // Instruction provided a constant expression
1993 // Check later that encoding specifies $$$constant to resolve as constant
1994 _constant_status = LITERAL_SEEN;
1995 }
1996 else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
1997 // Instruction provided an opcode: "primary", "secondary", "tertiary"
1998 // Check later that encoding specifies $$$constant to resolve as constant
1999 _constant_status = LITERAL_SEEN;
2000 }
2001 else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
2002 // Instruction provided a literal register name for this parameter
2003 // Check that encoding specifies $$$reg to resolve.as register.
2004 _reg_status = LITERAL_SEEN;
2005 }
2006 else {
2007 // Check for unimplemented functionality before hard failure
2008 assert( strcmp(opc->_ident,"label")==0, "Unimplemented() Label");
2009 assert( false, "ShouldNotReachHere()");
2010 }
2011 } // done checking which operand this is.
2012 } else {
2013 //
2014 // A subfield variable, '$$' prefix
2015 // Check for fields that may require relocation information.
2016 // Then check that literal register parameters are accessed with 'reg' or 'constant'
2017 //
2018 if ( strcmp(rep_var,"$disp") == 0 ) {
2019 _doing_disp = true;
2020 assert( _opclass, "Must use operand or operand class before '$disp'");
2021 if( _operand == NULL ) {
2022 // Only have an operand class, generate run-time check for relocation
2023 _may_reloc = true;
2024 _reloc_form = RELOC_DISP;
2025 _reloc_type = AdlcVMDeps::oop_reloc_type();
2026 } else {
2027 // Do precise check on operand: is it a ConP or not
2028 //
2029 // Check interface for value of displacement
2030 assert( ( _operand->_interface != NULL ),
2031 "$disp can only follow memory interface operand");
2032 MemInterface *mem_interface= _operand->_interface->is_MemInterface();
2033 assert( mem_interface != NULL,
2034 "$disp can only follow memory interface operand");
2035 const char *disp = mem_interface->_disp;
2037 if( disp != NULL && (*disp == '$') ) {
2038 // MemInterface::disp contains a replacement variable,
2039 // Check if this matches a ConP
2040 //
2041 // Lookup replacement variable, in operand's component list
2042 const char *rep_var_name = disp + 1; // Skip '$'
2043 const Component *comp = _operand->_components.search(rep_var_name);
2044 assert( comp != NULL,"Replacement variable not found in components");
2045 const char *type = comp->_type;
2046 // Lookup operand form for replacement variable's type
2047 const Form *form = _AD.globalNames()[type];
2048 assert( form != NULL, "Replacement variable's type not found");
2049 OperandForm *op = form->is_operand();
2050 assert( op, "Attempting to emit a non-register or non-constant");
2051 // Check if this is a constant
2052 if (op->_matrule && op->_matrule->is_base_constant(_AD.globalNames())) {
2053 // Check which constant this name maps to: _c0, _c1, ..., _cn
2054 // const int idx = _operand.constant_position(_AD.globalNames(), comp);
2055 // assert( idx != -1, "Constant component not found in operand");
2056 Form::DataType dtype = op->is_base_constant(_AD.globalNames());
2057 if ( dtype == Form::idealP ) {
2058 _may_reloc = true;
2059 // No longer true that idealP is always an oop
2060 _reloc_form = RELOC_DISP;
2061 _reloc_type = AdlcVMDeps::oop_reloc_type();
2062 }
2063 }
2065 else if( _operand->is_user_name_for_sReg() != Form::none ) {
2066 // The only non-constant allowed access to disp is an operand sRegX in a stackSlotX
2067 assert( op->ideal_to_sReg_type(type) != Form::none, "StackSlots access displacements using 'sRegs'");
2068 _may_reloc = false;
2069 } else {
2070 assert( false, "fatal(); Only stackSlots can access a non-constant using 'disp'");
2071 }
2072 }
2073 } // finished with precise check of operand for relocation.
2074 } // finished with subfield variable
2075 else if ( strcmp(rep_var,"$constant") == 0 ) {
2076 _doing_constant = true;
2077 if ( _constant_status == LITERAL_NOT_SEEN ) {
2078 // Check operand for type of constant
2079 assert( _operand, "Must use operand before '$$constant'");
2080 Form::DataType dtype = _operand->is_base_constant(_AD.globalNames());
2081 _constant_type = dtype;
2082 if ( dtype == Form::idealP ) {
2083 _may_reloc = true;
2084 // No longer true that idealP is always an oop
2085 // // _must_reloc = true;
2086 _reloc_form = RELOC_IMMEDIATE;
2087 _reloc_type = AdlcVMDeps::oop_reloc_type();
2088 } else {
2089 // No relocation information needed
2090 }
2091 } else {
2092 // User-provided literals may not require relocation information !!!!!
2093 assert( _constant_status == LITERAL_SEEN, "Must know we are processing a user-provided literal");
2094 }
2095 }
2096 else if ( strcmp(rep_var,"$label") == 0 ) {
2097 // Calls containing labels require relocation
2098 if ( _inst.is_ideal_call() ) {
2099 _may_reloc = true;
2100 // !!!!! !!!!!
2101 _reloc_type = AdlcVMDeps::none_reloc_type();
2102 }
2103 }
2105 // literal register parameter must be accessed as a 'reg' field.
2106 if ( _reg_status != LITERAL_NOT_SEEN ) {
2107 assert( _reg_status == LITERAL_SEEN, "Must have seen register literal before now");
2108 if (strcmp(rep_var,"$reg") == 0 || reg_conversion(rep_var) != NULL) {
2109 _reg_status = LITERAL_ACCESSED;
2110 } else {
2111 assert( false, "invalid access to literal register parameter");
2112 }
2113 }
2114 // literal constant parameters must be accessed as a 'constant' field
2115 if ( _constant_status != LITERAL_NOT_SEEN ) {
2116 assert( _constant_status == LITERAL_SEEN, "Must have seen constant literal before now");
2117 if( strcmp(rep_var,"$constant") == 0 ) {
2118 _constant_status = LITERAL_ACCESSED;
2119 } else {
2120 assert( false, "invalid access to literal constant parameter");
2121 }
2122 }
2123 } // end replacement and/or subfield
2125 }
2127 void add_rep_var(const char *rep_var) {
2128 // Handle subfield and replacement variables.
2129 if ( ( *rep_var == '$' ) && ( *(rep_var+1) == '$' ) ) {
2130 // Check for emit prefix, '$$emit32'
2131 assert( _cleared, "Can not nest $$$emit32");
2132 if ( strcmp(rep_var,"$$emit32") == 0 ) {
2133 _doing_emit_d32 = true;
2134 }
2135 else if ( strcmp(rep_var,"$$emit16") == 0 ) {
2136 _doing_emit_d16 = true;
2137 }
2138 else if ( strcmp(rep_var,"$$emit_hi") == 0 ) {
2139 _doing_emit_hi = true;
2140 }
2141 else if ( strcmp(rep_var,"$$emit_lo") == 0 ) {
2142 _doing_emit_lo = true;
2143 }
2144 else if ( strcmp(rep_var,"$$emit8") == 0 ) {
2145 _doing_emit8 = true;
2146 }
2147 else {
2148 _AD.syntax_err(_encoding._linenum, "Unsupported $$operation '%s'\n",rep_var);
2149 assert( false, "fatal();");
2150 }
2151 }
2152 else {
2153 // Update state for replacement variables
2154 update_state( rep_var );
2155 _strings_to_emit.addName(rep_var);
2156 }
2157 _cleared = false;
2158 }
2160 void emit_replacement() {
2161 // A replacement variable or one of its subfields
2162 // Obtain replacement variable from list
2163 // const char *ec_rep_var = encoding->_rep_vars.iter();
2164 const char *rep_var;
2165 _strings_to_emit.reset();
2166 while ( (rep_var = _strings_to_emit.iter()) != NULL ) {
2168 if ( (*rep_var) == '$' ) {
2169 // A subfield variable, '$$' prefix
2170 emit_field( rep_var );
2171 } else {
2172 if (_strings_to_emit.peek() != NULL &&
2173 strcmp(_strings_to_emit.peek(), "$Address") == 0) {
2174 fprintf(_fp, "Address::make_raw(");
2176 emit_rep_var( rep_var );
2177 fprintf(_fp,"->base(ra_,this,idx%d), ", _operand_idx);
2179 _reg_status = LITERAL_ACCESSED;
2180 emit_rep_var( rep_var );
2181 fprintf(_fp,"->index(ra_,this,idx%d), ", _operand_idx);
2183 _reg_status = LITERAL_ACCESSED;
2184 emit_rep_var( rep_var );
2185 fprintf(_fp,"->scale(), ");
2187 _reg_status = LITERAL_ACCESSED;
2188 emit_rep_var( rep_var );
2189 Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2190 if( _operand && _operand_idx==0 && stack_type != Form::none ) {
2191 fprintf(_fp,"->disp(ra_,this,0), ");
2192 } else {
2193 fprintf(_fp,"->disp(ra_,this,idx%d), ", _operand_idx);
2194 }
2196 _reg_status = LITERAL_ACCESSED;
2197 emit_rep_var( rep_var );
2198 fprintf(_fp,"->disp_is_oop())");
2200 // skip trailing $Address
2201 _strings_to_emit.iter();
2202 } else {
2203 // A replacement variable, '$' prefix
2204 const char* next = _strings_to_emit.peek();
2205 const char* next2 = _strings_to_emit.peek(2);
2206 if (next != NULL && next2 != NULL && strcmp(next2, "$Register") == 0 &&
2207 (strcmp(next, "$base") == 0 || strcmp(next, "$index") == 0)) {
2208 // handle $rev_var$$base$$Register and $rev_var$$index$$Register by
2209 // producing as_Register(opnd_array(#)->base(ra_,this,idx1)).
2210 fprintf(_fp, "as_Register(");
2211 // emit the operand reference
2212 emit_rep_var( rep_var );
2213 rep_var = _strings_to_emit.iter();
2214 assert(strcmp(rep_var, "$base") == 0 || strcmp(rep_var, "$index") == 0, "bad pattern");
2215 // handle base or index
2216 emit_field(rep_var);
2217 rep_var = _strings_to_emit.iter();
2218 assert(strcmp(rep_var, "$Register") == 0, "bad pattern");
2219 // close up the parens
2220 fprintf(_fp, ")");
2221 } else {
2222 emit_rep_var( rep_var );
2223 }
2224 }
2225 } // end replacement and/or subfield
2226 }
2227 }
2229 void emit_reloc_type(const char* type) {
2230 fprintf(_fp, "%s", type)
2231 ;
2232 }
2235 void gen_emit_x_reloc(const char *d32_lo_hi ) {
2236 fprintf(_fp,"emit_%s_reloc(cbuf, ", d32_lo_hi );
2237 emit_replacement(); fprintf(_fp,", ");
2238 emit_reloc_type( _reloc_type ); fprintf(_fp,", ");
2239 fprintf(_fp, "%d", _reloc_form);fprintf(_fp, ");");
2240 }
2243 void emit() {
2244 //
2245 // "emit_d32_reloc(" or "emit_hi_reloc" or "emit_lo_reloc"
2246 //
2247 // Emit the function name when generating an emit function
2248 if ( _doing_emit_d32 || _doing_emit_hi || _doing_emit_lo ) {
2249 const char *d32_hi_lo = _doing_emit_d32 ? "d32" : (_doing_emit_hi ? "hi" : "lo");
2250 // In general, relocatable isn't known at compiler compile time.
2251 // Check results of prior scan
2252 if ( ! _may_reloc ) {
2253 // Definitely don't need relocation information
2254 fprintf( _fp, "emit_%s(cbuf, ", d32_hi_lo );
2255 emit_replacement(); fprintf(_fp, ")");
2256 }
2257 else if ( _must_reloc ) {
2258 // Must emit relocation information
2259 gen_emit_x_reloc( d32_hi_lo );
2260 }
2261 else {
2262 // Emit RUNTIME CHECK to see if value needs relocation info
2263 // If emitting a relocatable address, use 'emit_d32_reloc'
2264 const char *disp_constant = _doing_disp ? "disp" : _doing_constant ? "constant" : "INVALID";
2265 assert( (_doing_disp || _doing_constant)
2266 && !(_doing_disp && _doing_constant),
2267 "Must be emitting either a displacement or a constant");
2268 fprintf(_fp,"\n");
2269 fprintf(_fp,"if ( opnd_array(%d)->%s_is_oop() ) {\n",
2270 _operand_idx, disp_constant);
2271 fprintf(_fp," ");
2272 gen_emit_x_reloc( d32_hi_lo ); fprintf(_fp,"\n");
2273 fprintf(_fp,"} else {\n");
2274 fprintf(_fp," emit_%s(cbuf, ", d32_hi_lo);
2275 emit_replacement(); fprintf(_fp, ");\n"); fprintf(_fp,"}");
2276 }
2277 }
2278 else if ( _doing_emit_d16 ) {
2279 // Relocation of 16-bit values is not supported
2280 fprintf(_fp,"emit_d16(cbuf, ");
2281 emit_replacement(); fprintf(_fp, ")");
2282 // No relocation done for 16-bit values
2283 }
2284 else if ( _doing_emit8 ) {
2285 // Relocation of 8-bit values is not supported
2286 fprintf(_fp,"emit_d8(cbuf, ");
2287 emit_replacement(); fprintf(_fp, ")");
2288 // No relocation done for 8-bit values
2289 }
2290 else {
2291 // Not an emit# command, just output the replacement string.
2292 emit_replacement();
2293 }
2295 // Get ready for next state collection.
2296 clear();
2297 }
2299 private:
2301 // recognizes names which represent MacroAssembler register types
2302 // and return the conversion function to build them from OptoReg
2303 const char* reg_conversion(const char* rep_var) {
2304 if (strcmp(rep_var,"$Register") == 0) return "as_Register";
2305 if (strcmp(rep_var,"$FloatRegister") == 0) return "as_FloatRegister";
2306 #if defined(IA32) || defined(AMD64)
2307 if (strcmp(rep_var,"$XMMRegister") == 0) return "as_XMMRegister";
2308 #endif
2309 return NULL;
2310 }
2312 void emit_field(const char *rep_var) {
2313 const char* reg_convert = reg_conversion(rep_var);
2315 // A subfield variable, '$$subfield'
2316 if ( strcmp(rep_var, "$reg") == 0 || reg_convert != NULL) {
2317 // $reg form or the $Register MacroAssembler type conversions
2318 assert( _operand_idx != -1,
2319 "Must use this subfield after operand");
2320 if( _reg_status == LITERAL_NOT_SEEN ) {
2321 if (_processing_noninput) {
2322 const Form *local = _inst._localNames[_operand_name];
2323 OperandForm *oper = local->is_operand();
2324 const RegDef* first = oper->get_RegClass()->find_first_elem();
2325 if (reg_convert != NULL) {
2326 fprintf(_fp, "%s(%s_enc)", reg_convert, first->_regname);
2327 } else {
2328 fprintf(_fp, "%s_enc", first->_regname);
2329 }
2330 } else {
2331 fprintf(_fp,"->%s(ra_,this", reg_convert != NULL ? reg_convert : "reg");
2332 // Add parameter for index position, if not result operand
2333 if( _operand_idx != 0 ) fprintf(_fp,",idx%d", _operand_idx);
2334 fprintf(_fp,")");
2335 }
2336 } else {
2337 assert( _reg_status == LITERAL_OUTPUT, "should have output register literal in emit_rep_var");
2338 // Register literal has already been sent to output file, nothing more needed
2339 }
2340 }
2341 else if ( strcmp(rep_var,"$base") == 0 ) {
2342 assert( _operand_idx != -1,
2343 "Must use this subfield after operand");
2344 assert( ! _may_reloc, "UnImplemented()");
2345 fprintf(_fp,"->base(ra_,this,idx%d)", _operand_idx);
2346 }
2347 else if ( strcmp(rep_var,"$index") == 0 ) {
2348 assert( _operand_idx != -1,
2349 "Must use this subfield after operand");
2350 assert( ! _may_reloc, "UnImplemented()");
2351 fprintf(_fp,"->index(ra_,this,idx%d)", _operand_idx);
2352 }
2353 else if ( strcmp(rep_var,"$scale") == 0 ) {
2354 assert( ! _may_reloc, "UnImplemented()");
2355 fprintf(_fp,"->scale()");
2356 }
2357 else if ( strcmp(rep_var,"$cmpcode") == 0 ) {
2358 assert( ! _may_reloc, "UnImplemented()");
2359 fprintf(_fp,"->ccode()");
2360 }
2361 else if ( strcmp(rep_var,"$constant") == 0 ) {
2362 if( _constant_status == LITERAL_NOT_SEEN ) {
2363 if ( _constant_type == Form::idealD ) {
2364 fprintf(_fp,"->constantD()");
2365 } else if ( _constant_type == Form::idealF ) {
2366 fprintf(_fp,"->constantF()");
2367 } else if ( _constant_type == Form::idealL ) {
2368 fprintf(_fp,"->constantL()");
2369 } else {
2370 fprintf(_fp,"->constant()");
2371 }
2372 } else {
2373 assert( _constant_status == LITERAL_OUTPUT, "should have output constant literal in emit_rep_var");
2374 // Cosntant literal has already been sent to output file, nothing more needed
2375 }
2376 }
2377 else if ( strcmp(rep_var,"$disp") == 0 ) {
2378 Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2379 if( _operand && _operand_idx==0 && stack_type != Form::none ) {
2380 fprintf(_fp,"->disp(ra_,this,0)");
2381 } else {
2382 fprintf(_fp,"->disp(ra_,this,idx%d)", _operand_idx);
2383 }
2384 }
2385 else if ( strcmp(rep_var,"$label") == 0 ) {
2386 fprintf(_fp,"->label()");
2387 }
2388 else if ( strcmp(rep_var,"$method") == 0 ) {
2389 fprintf(_fp,"->method()");
2390 }
2391 else {
2392 printf("emit_field: %s\n",rep_var);
2393 assert( false, "UnImplemented()");
2394 }
2395 }
2398 void emit_rep_var(const char *rep_var) {
2399 _processing_noninput = false;
2400 // A replacement variable, originally '$'
2401 if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
2402 if (!_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(rep_var) )) {
2403 // Missing opcode
2404 _AD.syntax_err( _inst._linenum,
2405 "Missing $%s opcode definition in %s, used by encoding %s\n",
2406 rep_var, _inst._ident, _encoding._name);
2407 }
2408 }
2409 else if (strcmp(rep_var, "constanttablebase") == 0) {
2410 fprintf(_fp, "as_Register(ra_->get_encode(in(mach_constant_base_node_input())))");
2411 }
2412 else if (strcmp(rep_var, "constantoffset") == 0) {
2413 fprintf(_fp, "constant_offset()");
2414 }
2415 else if (strcmp(rep_var, "constantaddress") == 0) {
2416 fprintf(_fp, "InternalAddress(__ code()->consts()->start() + constant_offset())");
2417 }
2418 else {
2419 // Lookup its position in parameter list
2420 int param_no = _encoding.rep_var_index(rep_var);
2421 if ( param_no == -1 ) {
2422 _AD.syntax_err( _encoding._linenum,
2423 "Replacement variable %s not found in enc_class %s.\n",
2424 rep_var, _encoding._name);
2425 }
2426 // Lookup the corresponding ins_encode parameter
2427 const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
2429 // Check if instruction's actual parameter is a local name in the instruction
2430 const Form *local = _inst._localNames[inst_rep_var];
2431 OpClassForm *opc = (local != NULL) ? local->is_opclass() : NULL;
2432 // Note: assert removed to allow constant and symbolic parameters
2433 // assert( opc, "replacement variable was not found in local names");
2434 // Lookup the index position iff the replacement variable is a localName
2435 int idx = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
2436 if( idx != -1 ) {
2437 if (_inst.is_noninput_operand(idx)) {
2438 // This operand isn't a normal input so printing it is done
2439 // specially.
2440 _processing_noninput = true;
2441 } else {
2442 // Output the emit code for this operand
2443 fprintf(_fp,"opnd_array(%d)",idx);
2444 }
2445 assert( _operand == opc->is_operand(),
2446 "Previous emit $operand does not match current");
2447 }
2448 else if( ADLParser::is_literal_constant(inst_rep_var) ) {
2449 // else check if it is a constant expression
2450 // Removed following assert to allow primitive C types as arguments to encodings
2451 // assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2452 fprintf(_fp,"(%s)", inst_rep_var);
2453 _constant_status = LITERAL_OUTPUT;
2454 }
2455 else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
2456 // else check if "primary", "secondary", "tertiary"
2457 assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2458 if (!_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(inst_rep_var) )) {
2459 // Missing opcode
2460 _AD.syntax_err( _inst._linenum,
2461 "Missing $%s opcode definition in %s\n",
2462 rep_var, _inst._ident);
2464 }
2465 _constant_status = LITERAL_OUTPUT;
2466 }
2467 else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
2468 // Instruction provided a literal register name for this parameter
2469 // Check that encoding specifies $$$reg to resolve.as register.
2470 assert( _reg_status == LITERAL_ACCESSED, "Must be processing a literal register parameter");
2471 fprintf(_fp,"(%s_enc)", inst_rep_var);
2472 _reg_status = LITERAL_OUTPUT;
2473 }
2474 else {
2475 // Check for unimplemented functionality before hard failure
2476 assert( strcmp(opc->_ident,"label")==0, "Unimplemented() Label");
2477 assert( false, "ShouldNotReachHere()");
2478 }
2479 // all done
2480 }
2481 }
2483 }; // end class DefineEmitState
2486 void ArchDesc::defineSize(FILE *fp, InstructForm &inst) {
2488 //(1)
2489 // Output instruction's emit prototype
2490 fprintf(fp,"uint %sNode::size(PhaseRegAlloc *ra_) const {\n",
2491 inst._ident);
2493 fprintf(fp, " assert(VerifyOops || MachNode::size(ra_) <= %s, \"bad fixed size\");\n", inst._size);
2495 //(2)
2496 // Print the size
2497 fprintf(fp, " return (VerifyOops ? MachNode::size(ra_) : %s);\n", inst._size);
2499 // (3) and (4)
2500 fprintf(fp,"}\n");
2501 }
2503 // defineEmit -----------------------------------------------------------------
2504 void ArchDesc::defineEmit(FILE* fp, InstructForm& inst) {
2505 InsEncode* encode = inst._insencode;
2507 // (1)
2508 // Output instruction's emit prototype
2509 fprintf(fp, "void %sNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const {\n", inst._ident);
2511 // If user did not define an encode section,
2512 // provide stub that does not generate any machine code.
2513 if( (_encode == NULL) || (encode == NULL) ) {
2514 fprintf(fp, " // User did not define an encode section.\n");
2515 fprintf(fp, "}\n");
2516 return;
2517 }
2519 // Save current instruction's starting address (helps with relocation).
2520 fprintf(fp, " cbuf.set_insts_mark();\n");
2522 // For MachConstantNodes which are ideal jump nodes, fill the jump table.
2523 if (inst.is_mach_constant() && inst.is_ideal_jump()) {
2524 fprintf(fp, " ra_->C->constant_table().fill_jump_table(cbuf, (MachConstantNode*) this, _index2label);\n");
2525 }
2527 // Output each operand's offset into the array of registers.
2528 inst.index_temps(fp, _globalNames);
2530 // Output this instruction's encodings
2531 const char *ec_name;
2532 bool user_defined = false;
2533 encode->reset();
2534 while ((ec_name = encode->encode_class_iter()) != NULL) {
2535 fprintf(fp, " {\n");
2536 // Output user-defined encoding
2537 user_defined = true;
2539 const char *ec_code = NULL;
2540 const char *ec_rep_var = NULL;
2541 EncClass *encoding = _encode->encClass(ec_name);
2542 if (encoding == NULL) {
2543 fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2544 abort();
2545 }
2547 if (encode->current_encoding_num_args() != encoding->num_args()) {
2548 globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2549 inst._ident, encode->current_encoding_num_args(),
2550 ec_name, encoding->num_args());
2551 }
2553 DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2554 encoding->_code.reset();
2555 encoding->_rep_vars.reset();
2556 // Process list of user-defined strings,
2557 // and occurrences of replacement variables.
2558 // Replacement Vars are pushed into a list and then output
2559 while ((ec_code = encoding->_code.iter()) != NULL) {
2560 if (!encoding->_code.is_signal(ec_code)) {
2561 // Emit pending code
2562 pending.emit();
2563 pending.clear();
2564 // Emit this code section
2565 fprintf(fp, "%s", ec_code);
2566 } else {
2567 // A replacement variable or one of its subfields
2568 // Obtain replacement variable from list
2569 ec_rep_var = encoding->_rep_vars.iter();
2570 pending.add_rep_var(ec_rep_var);
2571 }
2572 }
2573 // Emit pending code
2574 pending.emit();
2575 pending.clear();
2576 fprintf(fp, " }\n");
2577 } // end while instruction's encodings
2579 // Check if user stated which encoding to user
2580 if ( user_defined == false ) {
2581 fprintf(fp, " // User did not define which encode class to use.\n");
2582 }
2584 // (3) and (4)
2585 fprintf(fp, "}\n");
2586 }
2588 // defineEvalConstant ---------------------------------------------------------
2589 void ArchDesc::defineEvalConstant(FILE* fp, InstructForm& inst) {
2590 InsEncode* encode = inst._constant;
2592 // (1)
2593 // Output instruction's emit prototype
2594 fprintf(fp, "void %sNode::eval_constant(Compile* C) {\n", inst._ident);
2596 // For ideal jump nodes, add a jump-table entry.
2597 if (inst.is_ideal_jump()) {
2598 fprintf(fp, " _constant = C->constant_table().add_jump_table(this);\n");
2599 }
2601 // If user did not define an encode section,
2602 // provide stub that does not generate any machine code.
2603 if ((_encode == NULL) || (encode == NULL)) {
2604 fprintf(fp, " // User did not define an encode section.\n");
2605 fprintf(fp, "}\n");
2606 return;
2607 }
2609 // Output this instruction's encodings
2610 const char *ec_name;
2611 bool user_defined = false;
2612 encode->reset();
2613 while ((ec_name = encode->encode_class_iter()) != NULL) {
2614 fprintf(fp, " {\n");
2615 // Output user-defined encoding
2616 user_defined = true;
2618 const char *ec_code = NULL;
2619 const char *ec_rep_var = NULL;
2620 EncClass *encoding = _encode->encClass(ec_name);
2621 if (encoding == NULL) {
2622 fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2623 abort();
2624 }
2626 if (encode->current_encoding_num_args() != encoding->num_args()) {
2627 globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2628 inst._ident, encode->current_encoding_num_args(),
2629 ec_name, encoding->num_args());
2630 }
2632 DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2633 encoding->_code.reset();
2634 encoding->_rep_vars.reset();
2635 // Process list of user-defined strings,
2636 // and occurrences of replacement variables.
2637 // Replacement Vars are pushed into a list and then output
2638 while ((ec_code = encoding->_code.iter()) != NULL) {
2639 if (!encoding->_code.is_signal(ec_code)) {
2640 // Emit pending code
2641 pending.emit();
2642 pending.clear();
2643 // Emit this code section
2644 fprintf(fp, "%s", ec_code);
2645 } else {
2646 // A replacement variable or one of its subfields
2647 // Obtain replacement variable from list
2648 ec_rep_var = encoding->_rep_vars.iter();
2649 pending.add_rep_var(ec_rep_var);
2650 }
2651 }
2652 // Emit pending code
2653 pending.emit();
2654 pending.clear();
2655 fprintf(fp, " }\n");
2656 } // end while instruction's encodings
2658 // Check if user stated which encoding to user
2659 if (user_defined == false) {
2660 fprintf(fp, " // User did not define which encode class to use.\n");
2661 }
2663 // (3) and (4)
2664 fprintf(fp, "}\n");
2665 }
2667 // ---------------------------------------------------------------------------
2668 //--------Utilities to build MachOper and MachNode derived Classes------------
2669 // ---------------------------------------------------------------------------
2671 //------------------------------Utilities to build Operand Classes------------
2672 static void defineIn_RegMask(FILE *fp, FormDict &globals, OperandForm &oper) {
2673 uint num_edges = oper.num_edges(globals);
2674 if( num_edges != 0 ) {
2675 // Method header
2676 fprintf(fp, "const RegMask *%sOper::in_RegMask(int index) const {\n",
2677 oper._ident);
2679 // Assert that the index is in range.
2680 fprintf(fp, " assert(0 <= index && index < %d, \"index out of range\");\n",
2681 num_edges);
2683 // Figure out if all RegMasks are the same.
2684 const char* first_reg_class = oper.in_reg_class(0, globals);
2685 bool all_same = true;
2686 assert(first_reg_class != NULL, "did not find register mask");
2688 for (uint index = 1; all_same && index < num_edges; index++) {
2689 const char* some_reg_class = oper.in_reg_class(index, globals);
2690 assert(some_reg_class != NULL, "did not find register mask");
2691 if (strcmp(first_reg_class, some_reg_class) != 0) {
2692 all_same = false;
2693 }
2694 }
2696 if (all_same) {
2697 // Return the sole RegMask.
2698 if (strcmp(first_reg_class, "stack_slots") == 0) {
2699 fprintf(fp," return &(Compile::current()->FIRST_STACK_mask());\n");
2700 } else {
2701 fprintf(fp," return &%s_mask();\n", toUpper(first_reg_class));
2702 }
2703 } else {
2704 // Build a switch statement to return the desired mask.
2705 fprintf(fp," switch (index) {\n");
2707 for (uint index = 0; index < num_edges; index++) {
2708 const char *reg_class = oper.in_reg_class(index, globals);
2709 assert(reg_class != NULL, "did not find register mask");
2710 if( !strcmp(reg_class, "stack_slots") ) {
2711 fprintf(fp, " case %d: return &(Compile::current()->FIRST_STACK_mask());\n", index);
2712 } else {
2713 fprintf(fp, " case %d: return &%s_mask();\n", index, toUpper(reg_class));
2714 }
2715 }
2716 fprintf(fp," }\n");
2717 fprintf(fp," ShouldNotReachHere();\n");
2718 fprintf(fp," return NULL;\n");
2719 }
2721 // Method close
2722 fprintf(fp, "}\n\n");
2723 }
2724 }
2726 // generate code to create a clone for a class derived from MachOper
2727 //
2728 // (0) MachOper *MachOperXOper::clone(Compile* C) const {
2729 // (1) return new (C) MachXOper( _ccode, _c0, _c1, ..., _cn);
2730 // (2) }
2731 //
2732 static void defineClone(FILE *fp, FormDict &globalNames, OperandForm &oper) {
2733 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper._ident);
2734 // Check for constants that need to be copied over
2735 const int num_consts = oper.num_consts(globalNames);
2736 const bool is_ideal_bool = oper.is_ideal_bool();
2737 if( (num_consts > 0) ) {
2738 fprintf(fp," return new (C) %sOper(", oper._ident);
2739 // generate parameters for constants
2740 int i = 0;
2741 fprintf(fp,"_c%d", i);
2742 for( i = 1; i < num_consts; ++i) {
2743 fprintf(fp,", _c%d", i);
2744 }
2745 // finish line (1)
2746 fprintf(fp,");\n");
2747 }
2748 else {
2749 assert( num_consts == 0, "Currently support zero or one constant per operand clone function");
2750 fprintf(fp," return new (C) %sOper();\n", oper._ident);
2751 }
2752 // finish method
2753 fprintf(fp,"}\n");
2754 }
2756 static void define_hash(FILE *fp, char *operand) {
2757 fprintf(fp,"uint %sOper::hash() const { return 5; }\n", operand);
2758 }
2760 static void define_cmp(FILE *fp, char *operand) {
2761 fprintf(fp,"uint %sOper::cmp( const MachOper &oper ) const { return opcode() == oper.opcode(); }\n", operand);
2762 }
2765 // Helper functions for bug 4796752, abstracted with minimal modification
2766 // from define_oper_interface()
2767 OperandForm *rep_var_to_operand(const char *encoding, OperandForm &oper, FormDict &globals) {
2768 OperandForm *op = NULL;
2769 // Check for replacement variable
2770 if( *encoding == '$' ) {
2771 // Replacement variable
2772 const char *rep_var = encoding + 1;
2773 // Lookup replacement variable, rep_var, in operand's component list
2774 const Component *comp = oper._components.search(rep_var);
2775 assert( comp != NULL, "Replacement variable not found in components");
2776 // Lookup operand form for replacement variable's type
2777 const char *type = comp->_type;
2778 Form *form = (Form*)globals[type];
2779 assert( form != NULL, "Replacement variable's type not found");
2780 op = form->is_operand();
2781 assert( op, "Attempting to emit a non-register or non-constant");
2782 }
2784 return op;
2785 }
2787 int rep_var_to_constant_index(const char *encoding, OperandForm &oper, FormDict &globals) {
2788 int idx = -1;
2789 // Check for replacement variable
2790 if( *encoding == '$' ) {
2791 // Replacement variable
2792 const char *rep_var = encoding + 1;
2793 // Lookup replacement variable, rep_var, in operand's component list
2794 const Component *comp = oper._components.search(rep_var);
2795 assert( comp != NULL, "Replacement variable not found in components");
2796 // Lookup operand form for replacement variable's type
2797 const char *type = comp->_type;
2798 Form *form = (Form*)globals[type];
2799 assert( form != NULL, "Replacement variable's type not found");
2800 OperandForm *op = form->is_operand();
2801 assert( op, "Attempting to emit a non-register or non-constant");
2802 // Check that this is a constant and find constant's index:
2803 if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2804 idx = oper.constant_position(globals, comp);
2805 }
2806 }
2808 return idx;
2809 }
2811 bool is_regI(const char *encoding, OperandForm &oper, FormDict &globals ) {
2812 bool is_regI = false;
2814 OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2815 if( op != NULL ) {
2816 // Check that this is a register
2817 if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2818 // Register
2819 const char* ideal = op->ideal_type(globals);
2820 is_regI = (ideal && (op->ideal_to_Reg_type(ideal) == Form::idealI));
2821 }
2822 }
2824 return is_regI;
2825 }
2827 bool is_conP(const char *encoding, OperandForm &oper, FormDict &globals ) {
2828 bool is_conP = false;
2830 OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2831 if( op != NULL ) {
2832 // Check that this is a constant pointer
2833 if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2834 // Constant
2835 Form::DataType dtype = op->is_base_constant(globals);
2836 is_conP = (dtype == Form::idealP);
2837 }
2838 }
2840 return is_conP;
2841 }
2844 // Define a MachOper interface methods
2845 void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &globals,
2846 const char *name, const char *encoding) {
2847 bool emit_position = false;
2848 int position = -1;
2850 fprintf(fp," virtual int %s", name);
2851 // Generate access method for base, index, scale, disp, ...
2852 if( (strcmp(name,"base") == 0) || (strcmp(name,"index") == 0) ) {
2853 fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2854 emit_position = true;
2855 } else if ( (strcmp(name,"disp") == 0) ) {
2856 fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2857 } else {
2858 fprintf(fp,"() const { ");
2859 }
2861 // Check for hexadecimal value OR replacement variable
2862 if( *encoding == '$' ) {
2863 // Replacement variable
2864 const char *rep_var = encoding + 1;
2865 fprintf(fp,"// Replacement variable: %s\n", encoding+1);
2866 // Lookup replacement variable, rep_var, in operand's component list
2867 const Component *comp = oper._components.search(rep_var);
2868 assert( comp != NULL, "Replacement variable not found in components");
2869 // Lookup operand form for replacement variable's type
2870 const char *type = comp->_type;
2871 Form *form = (Form*)globals[type];
2872 assert( form != NULL, "Replacement variable's type not found");
2873 OperandForm *op = form->is_operand();
2874 assert( op, "Attempting to emit a non-register or non-constant");
2875 // Check that this is a register or a constant and generate code:
2876 if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2877 // Register
2878 int idx_offset = oper.register_position( globals, rep_var);
2879 position = idx_offset;
2880 fprintf(fp," return (int)ra_->get_encode(node->in(idx");
2881 if ( idx_offset > 0 ) fprintf(fp, "+%d",idx_offset);
2882 fprintf(fp,"));\n");
2883 } else if ( op->ideal_to_sReg_type(op->_ident) != Form::none ) {
2884 // StackSlot for an sReg comes either from input node or from self, when idx==0
2885 fprintf(fp," if( idx != 0 ) {\n");
2886 fprintf(fp," // Access register number for input operand\n");
2887 fprintf(fp," return ra_->reg2offset(ra_->get_reg_first(node->in(idx)));/* sReg */\n");
2888 fprintf(fp," }\n");
2889 fprintf(fp," // Access register number from myself\n");
2890 fprintf(fp," return ra_->reg2offset(ra_->get_reg_first(node));/* sReg */\n");
2891 } else if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2892 // Constant
2893 // Check which constant this name maps to: _c0, _c1, ..., _cn
2894 const int idx = oper.constant_position(globals, comp);
2895 assert( idx != -1, "Constant component not found in operand");
2896 // Output code for this constant, type dependent.
2897 fprintf(fp," return (int)" );
2898 oper.access_constant(fp, globals, (uint)idx /* , const_type */);
2899 fprintf(fp,";\n");
2900 } else {
2901 assert( false, "Attempting to emit a non-register or non-constant");
2902 }
2903 }
2904 else if( *encoding == '0' && *(encoding+1) == 'x' ) {
2905 // Hex value
2906 fprintf(fp,"return %s;", encoding);
2907 } else {
2908 assert( false, "Do not support octal or decimal encode constants");
2909 }
2910 fprintf(fp," }\n");
2912 if( emit_position && (position != -1) && (oper.num_edges(globals) > 0) ) {
2913 fprintf(fp," virtual int %s_position() const { return %d; }\n", name, position);
2914 MemInterface *mem_interface = oper._interface->is_MemInterface();
2915 const char *base = mem_interface->_base;
2916 const char *disp = mem_interface->_disp;
2917 if( emit_position && (strcmp(name,"base") == 0)
2918 && base != NULL && is_regI(base, oper, globals)
2919 && disp != NULL && is_conP(disp, oper, globals) ) {
2920 // Found a memory access using a constant pointer for a displacement
2921 // and a base register containing an integer offset.
2922 // In this case the base and disp are reversed with respect to what
2923 // is expected by MachNode::get_base_and_disp() and MachNode::adr_type().
2924 // Provide a non-NULL return for disp_as_type() that will allow adr_type()
2925 // to correctly compute the access type for alias analysis.
2926 //
2927 // See BugId 4796752, operand indOffset32X in i486.ad
2928 int idx = rep_var_to_constant_index(disp, oper, globals);
2929 fprintf(fp," virtual const TypePtr *disp_as_type() const { return _c%d; }\n", idx);
2930 }
2931 }
2932 }
2934 //
2935 // Construct the method to copy _idx, inputs and operands to new node.
2936 static void define_fill_new_machnode(bool used, FILE *fp_cpp) {
2937 fprintf(fp_cpp, "\n");
2938 fprintf(fp_cpp, "// Copy _idx, inputs and operands to new node\n");
2939 fprintf(fp_cpp, "void MachNode::fill_new_machnode( MachNode* node, Compile* C) const {\n");
2940 if( !used ) {
2941 fprintf(fp_cpp, " // This architecture does not have cisc or short branch instructions\n");
2942 fprintf(fp_cpp, " ShouldNotCallThis();\n");
2943 fprintf(fp_cpp, "}\n");
2944 } else {
2945 // New node must use same node index for access through allocator's tables
2946 fprintf(fp_cpp, " // New node must use same node index\n");
2947 fprintf(fp_cpp, " node->set_idx( _idx );\n");
2948 // Copy machine-independent inputs
2949 fprintf(fp_cpp, " // Copy machine-independent inputs\n");
2950 fprintf(fp_cpp, " for( uint j = 0; j < req(); j++ ) {\n");
2951 fprintf(fp_cpp, " node->add_req(in(j));\n");
2952 fprintf(fp_cpp, " }\n");
2953 // Copy machine operands to new MachNode
2954 fprintf(fp_cpp, " // Copy my operands, except for cisc position\n");
2955 fprintf(fp_cpp, " int nopnds = num_opnds();\n");
2956 fprintf(fp_cpp, " assert( node->num_opnds() == (uint)nopnds, \"Must have same number of operands\");\n");
2957 fprintf(fp_cpp, " MachOper **to = node->_opnds;\n");
2958 fprintf(fp_cpp, " for( int i = 0; i < nopnds; i++ ) {\n");
2959 fprintf(fp_cpp, " if( i != cisc_operand() ) \n");
2960 fprintf(fp_cpp, " to[i] = _opnds[i]->clone(C);\n");
2961 fprintf(fp_cpp, " }\n");
2962 fprintf(fp_cpp, "}\n");
2963 }
2964 fprintf(fp_cpp, "\n");
2965 }
2967 //------------------------------defineClasses----------------------------------
2968 // Define members of MachNode and MachOper classes based on
2969 // operand and instruction lists
2970 void ArchDesc::defineClasses(FILE *fp) {
2972 // Define the contents of an array containing the machine register names
2973 defineRegNames(fp, _register);
2974 // Define an array containing the machine register encoding values
2975 defineRegEncodes(fp, _register);
2976 // Generate an enumeration of user-defined register classes
2977 // and a list of register masks, one for each class.
2978 // Only define the RegMask value objects in the expand file.
2979 // Declare each as an extern const RegMask ...; in ad_<arch>.hpp
2980 declare_register_masks(_HPP_file._fp);
2981 // build_register_masks(fp);
2982 build_register_masks(_CPP_EXPAND_file._fp);
2983 // Define the pipe_classes
2984 build_pipe_classes(_CPP_PIPELINE_file._fp);
2986 // Generate Machine Classes for each operand defined in AD file
2987 fprintf(fp,"\n");
2988 fprintf(fp,"\n");
2989 fprintf(fp,"//------------------Define classes derived from MachOper---------------------\n");
2990 // Iterate through all operands
2991 _operands.reset();
2992 OperandForm *oper;
2993 for( ; (oper = (OperandForm*)_operands.iter()) != NULL; ) {
2994 // Ensure this is a machine-world instruction
2995 if ( oper->ideal_only() ) continue;
2996 // !!!!!
2997 // The declaration of labelOper is in machine-independent file: machnode
2998 if ( strcmp(oper->_ident,"label") == 0 ) {
2999 defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3001 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper->_ident);
3002 fprintf(fp," return new (C) %sOper(_label, _block_num);\n", oper->_ident);
3003 fprintf(fp,"}\n");
3005 fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3006 oper->_ident, machOperEnum(oper->_ident));
3007 // // Currently all XXXOper::Hash() methods are identical (990820)
3008 // define_hash(fp, oper->_ident);
3009 // // Currently all XXXOper::Cmp() methods are identical (990820)
3010 // define_cmp(fp, oper->_ident);
3011 fprintf(fp,"\n");
3013 continue;
3014 }
3016 // The declaration of methodOper is in machine-independent file: machnode
3017 if ( strcmp(oper->_ident,"method") == 0 ) {
3018 defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3020 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper->_ident);
3021 fprintf(fp," return new (C) %sOper(_method);\n", oper->_ident);
3022 fprintf(fp,"}\n");
3024 fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3025 oper->_ident, machOperEnum(oper->_ident));
3026 // // Currently all XXXOper::Hash() methods are identical (990820)
3027 // define_hash(fp, oper->_ident);
3028 // // Currently all XXXOper::Cmp() methods are identical (990820)
3029 // define_cmp(fp, oper->_ident);
3030 fprintf(fp,"\n");
3032 continue;
3033 }
3035 defineIn_RegMask(fp, _globalNames, *oper);
3036 defineClone(_CPP_CLONE_file._fp, _globalNames, *oper);
3037 // // Currently all XXXOper::Hash() methods are identical (990820)
3038 // define_hash(fp, oper->_ident);
3039 // // Currently all XXXOper::Cmp() methods are identical (990820)
3040 // define_cmp(fp, oper->_ident);
3042 // side-call to generate output that used to be in the header file:
3043 extern void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_file);
3044 gen_oper_format(_CPP_FORMAT_file._fp, _globalNames, *oper, true);
3046 }
3049 // Generate Machine Classes for each instruction defined in AD file
3050 fprintf(fp,"//------------------Define members for classes derived from MachNode----------\n");
3051 // Output the definitions for out_RegMask() // & kill_RegMask()
3052 _instructions.reset();
3053 InstructForm *instr;
3054 MachNodeForm *machnode;
3055 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3056 // Ensure this is a machine-world instruction
3057 if ( instr->ideal_only() ) continue;
3059 defineOut_RegMask(_CPP_MISC_file._fp, instr->_ident, reg_mask(*instr));
3060 }
3062 bool used = false;
3063 // Output the definitions for expand rules & peephole rules
3064 _instructions.reset();
3065 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3066 // Ensure this is a machine-world instruction
3067 if ( instr->ideal_only() ) continue;
3068 // If there are multiple defs/kills, or an explicit expand rule, build rule
3069 if( instr->expands() || instr->needs_projections() ||
3070 instr->has_temps() ||
3071 instr->is_mach_constant() ||
3072 instr->_matrule != NULL &&
3073 instr->num_opnds() != instr->num_unique_opnds() )
3074 defineExpand(_CPP_EXPAND_file._fp, instr);
3075 // If there is an explicit peephole rule, build it
3076 if ( instr->peepholes() )
3077 definePeephole(_CPP_PEEPHOLE_file._fp, instr);
3079 // Output code to convert to the cisc version, if applicable
3080 used |= instr->define_cisc_version(*this, fp);
3082 // Output code to convert to the short branch version, if applicable
3083 used |= instr->define_short_branch_methods(*this, fp);
3084 }
3086 // Construct the method called by cisc_version() to copy inputs and operands.
3087 define_fill_new_machnode(used, fp);
3089 // Output the definitions for labels
3090 _instructions.reset();
3091 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3092 // Ensure this is a machine-world instruction
3093 if ( instr->ideal_only() ) continue;
3095 // Access the fields for operand Label
3096 int label_position = instr->label_position();
3097 if( label_position != -1 ) {
3098 // Set the label
3099 fprintf(fp,"void %sNode::label_set( Label* label, uint block_num ) {\n", instr->_ident);
3100 fprintf(fp," labelOper* oper = (labelOper*)(opnd_array(%d));\n",
3101 label_position );
3102 fprintf(fp," oper->_label = label;\n");
3103 fprintf(fp," oper->_block_num = block_num;\n");
3104 fprintf(fp,"}\n");
3105 // Save the label
3106 fprintf(fp,"void %sNode::save_label( Label** label, uint* block_num ) {\n", instr->_ident);
3107 fprintf(fp," labelOper* oper = (labelOper*)(opnd_array(%d));\n",
3108 label_position );
3109 fprintf(fp," *label = oper->_label;\n");
3110 fprintf(fp," *block_num = oper->_block_num;\n");
3111 fprintf(fp,"}\n");
3112 }
3113 }
3115 // Output the definitions for methods
3116 _instructions.reset();
3117 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3118 // Ensure this is a machine-world instruction
3119 if ( instr->ideal_only() ) continue;
3121 // Access the fields for operand Label
3122 int method_position = instr->method_position();
3123 if( method_position != -1 ) {
3124 // Access the method's address
3125 fprintf(fp,"void %sNode::method_set( intptr_t method ) {\n", instr->_ident);
3126 fprintf(fp," ((methodOper*)opnd_array(%d))->_method = method;\n",
3127 method_position );
3128 fprintf(fp,"}\n");
3129 fprintf(fp,"\n");
3130 }
3131 }
3133 // Define this instruction's number of relocation entries, base is '0'
3134 _instructions.reset();
3135 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3136 // Output the definition for number of relocation entries
3137 uint reloc_size = instr->reloc(_globalNames);
3138 if ( reloc_size != 0 ) {
3139 fprintf(fp,"int %sNode::reloc() const {\n", instr->_ident);
3140 fprintf(fp, " return %d;\n", reloc_size );
3141 fprintf(fp,"}\n");
3142 fprintf(fp,"\n");
3143 }
3144 }
3145 fprintf(fp,"\n");
3147 // Output the definitions for code generation
3148 //
3149 // address ___Node::emit(address ptr, PhaseRegAlloc *ra_) const {
3150 // // ... encoding defined by user
3151 // return ptr;
3152 // }
3153 //
3154 _instructions.reset();
3155 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3156 // Ensure this is a machine-world instruction
3157 if ( instr->ideal_only() ) continue;
3159 if (instr->_insencode) defineEmit (fp, *instr);
3160 if (instr->is_mach_constant()) defineEvalConstant(fp, *instr);
3161 if (instr->_size) defineSize (fp, *instr);
3163 // side-call to generate output that used to be in the header file:
3164 extern void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &oper, bool for_c_file);
3165 gen_inst_format(_CPP_FORMAT_file._fp, _globalNames, *instr, true);
3166 }
3168 // Output the definitions for alias analysis
3169 _instructions.reset();
3170 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3171 // Ensure this is a machine-world instruction
3172 if ( instr->ideal_only() ) continue;
3174 // Analyze machine instructions that either USE or DEF memory.
3175 int memory_operand = instr->memory_operand(_globalNames);
3176 // Some guys kill all of memory
3177 if ( instr->is_wide_memory_kill(_globalNames) ) {
3178 memory_operand = InstructForm::MANY_MEMORY_OPERANDS;
3179 }
3181 if ( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
3182 if( memory_operand == InstructForm::MANY_MEMORY_OPERANDS ) {
3183 fprintf(fp,"const TypePtr *%sNode::adr_type() const { return TypePtr::BOTTOM; }\n", instr->_ident);
3184 fprintf(fp,"const MachOper* %sNode::memory_operand() const { return (MachOper*)-1; }\n", instr->_ident);
3185 } else {
3186 fprintf(fp,"const MachOper* %sNode::memory_operand() const { return _opnds[%d]; }\n", instr->_ident, memory_operand);
3187 }
3188 }
3189 }
3191 // Get the length of the longest identifier
3192 int max_ident_len = 0;
3193 _instructions.reset();
3195 for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3196 if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3197 int ident_len = (int)strlen(instr->_ident);
3198 if( max_ident_len < ident_len )
3199 max_ident_len = ident_len;
3200 }
3201 }
3203 // Emit specifically for Node(s)
3204 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3205 max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3206 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return %s; }\n",
3207 max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3208 fprintf(_CPP_PIPELINE_file._fp, "\n");
3210 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3211 max_ident_len, "MachNode", _pipeline ? "(&pipeline_class_Unknown_Instructions)" : "NULL");
3212 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return pipeline_class(); }\n",
3213 max_ident_len, "MachNode");
3214 fprintf(_CPP_PIPELINE_file._fp, "\n");
3216 // Output the definitions for machine node specific pipeline data
3217 _machnodes.reset();
3219 for ( ; (machnode = (MachNodeForm*)_machnodes.iter()) != NULL; ) {
3220 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3221 machnode->_ident, ((class PipeClassForm *)_pipeline->_classdict[machnode->_machnode_pipe])->_num);
3222 }
3224 fprintf(_CPP_PIPELINE_file._fp, "\n");
3226 // Output the definitions for instruction pipeline static data references
3227 _instructions.reset();
3229 for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3230 if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3231 fprintf(_CPP_PIPELINE_file._fp, "\n");
3232 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline_class() { return (&pipeline_class_%03d); }\n",
3233 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3234 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3235 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3236 }
3237 }
3238 }
3241 // -------------------------------- maps ------------------------------------
3243 // Information needed to generate the ReduceOp mapping for the DFA
3244 class OutputReduceOp : public OutputMap {
3245 public:
3246 OutputReduceOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3247 : OutputMap(hpp, cpp, globals, AD) {};
3249 void declaration() { fprintf(_hpp, "extern const int reduceOp[];\n"); }
3250 void definition() { fprintf(_cpp, "const int reduceOp[] = {\n"); }
3251 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3252 OutputMap::closing();
3253 }
3254 void map(OpClassForm &opc) {
3255 const char *reduce = opc._ident;
3256 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3257 else fprintf(_cpp, " 0");
3258 }
3259 void map(OperandForm &oper) {
3260 // Most operands without match rules, e.g. eFlagsReg, do not have a result operand
3261 const char *reduce = (oper._matrule ? oper.reduce_result() : NULL);
3262 // operand stackSlot does not have a match rule, but produces a stackSlot
3263 if( oper.is_user_name_for_sReg() != Form::none ) reduce = oper.reduce_result();
3264 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3265 else fprintf(_cpp, " 0");
3266 }
3267 void map(InstructForm &inst) {
3268 const char *reduce = (inst._matrule ? inst.reduce_result() : NULL);
3269 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3270 else fprintf(_cpp, " 0");
3271 }
3272 void map(char *reduce) {
3273 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3274 else fprintf(_cpp, " 0");
3275 }
3276 };
3278 // Information needed to generate the LeftOp mapping for the DFA
3279 class OutputLeftOp : public OutputMap {
3280 public:
3281 OutputLeftOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3282 : OutputMap(hpp, cpp, globals, AD) {};
3284 void declaration() { fprintf(_hpp, "extern const int leftOp[];\n"); }
3285 void definition() { fprintf(_cpp, "const int leftOp[] = {\n"); }
3286 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3287 OutputMap::closing();
3288 }
3289 void map(OpClassForm &opc) { fprintf(_cpp, " 0"); }
3290 void map(OperandForm &oper) {
3291 const char *reduce = oper.reduce_left(_globals);
3292 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3293 else fprintf(_cpp, " 0");
3294 }
3295 void map(char *name) {
3296 const char *reduce = _AD.reduceLeft(name);
3297 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3298 else fprintf(_cpp, " 0");
3299 }
3300 void map(InstructForm &inst) {
3301 const char *reduce = inst.reduce_left(_globals);
3302 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3303 else fprintf(_cpp, " 0");
3304 }
3305 };
3308 // Information needed to generate the RightOp mapping for the DFA
3309 class OutputRightOp : public OutputMap {
3310 public:
3311 OutputRightOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3312 : OutputMap(hpp, cpp, globals, AD) {};
3314 void declaration() { fprintf(_hpp, "extern const int rightOp[];\n"); }
3315 void definition() { fprintf(_cpp, "const int rightOp[] = {\n"); }
3316 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3317 OutputMap::closing();
3318 }
3319 void map(OpClassForm &opc) { fprintf(_cpp, " 0"); }
3320 void map(OperandForm &oper) {
3321 const char *reduce = oper.reduce_right(_globals);
3322 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3323 else fprintf(_cpp, " 0");
3324 }
3325 void map(char *name) {
3326 const char *reduce = _AD.reduceRight(name);
3327 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3328 else fprintf(_cpp, " 0");
3329 }
3330 void map(InstructForm &inst) {
3331 const char *reduce = inst.reduce_right(_globals);
3332 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3333 else fprintf(_cpp, " 0");
3334 }
3335 };
3338 // Information needed to generate the Rule names for the DFA
3339 class OutputRuleName : public OutputMap {
3340 public:
3341 OutputRuleName(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3342 : OutputMap(hpp, cpp, globals, AD) {};
3344 void declaration() { fprintf(_hpp, "extern const char *ruleName[];\n"); }
3345 void definition() { fprintf(_cpp, "const char *ruleName[] = {\n"); }
3346 void closing() { fprintf(_cpp, " \"no trailing comma\"\n");
3347 OutputMap::closing();
3348 }
3349 void map(OpClassForm &opc) { fprintf(_cpp, " \"%s\"", _AD.machOperEnum(opc._ident) ); }
3350 void map(OperandForm &oper) { fprintf(_cpp, " \"%s\"", _AD.machOperEnum(oper._ident) ); }
3351 void map(char *name) { fprintf(_cpp, " \"%s\"", name ? name : "0"); }
3352 void map(InstructForm &inst){ fprintf(_cpp, " \"%s\"", inst._ident ? inst._ident : "0"); }
3353 };
3356 // Information needed to generate the swallowed mapping for the DFA
3357 class OutputSwallowed : public OutputMap {
3358 public:
3359 OutputSwallowed(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3360 : OutputMap(hpp, cpp, globals, AD) {};
3362 void declaration() { fprintf(_hpp, "extern const bool swallowed[];\n"); }
3363 void definition() { fprintf(_cpp, "const bool swallowed[] = {\n"); }
3364 void closing() { fprintf(_cpp, " false // no trailing comma\n");
3365 OutputMap::closing();
3366 }
3367 void map(OperandForm &oper) { // Generate the entry for this opcode
3368 const char *swallowed = oper.swallowed(_globals) ? "true" : "false";
3369 fprintf(_cpp, " %s", swallowed);
3370 }
3371 void map(OpClassForm &opc) { fprintf(_cpp, " false"); }
3372 void map(char *name) { fprintf(_cpp, " false"); }
3373 void map(InstructForm &inst){ fprintf(_cpp, " false"); }
3374 };
3377 // Information needed to generate the decision array for instruction chain rule
3378 class OutputInstChainRule : public OutputMap {
3379 public:
3380 OutputInstChainRule(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3381 : OutputMap(hpp, cpp, globals, AD) {};
3383 void declaration() { fprintf(_hpp, "extern const bool instruction_chain_rule[];\n"); }
3384 void definition() { fprintf(_cpp, "const bool instruction_chain_rule[] = {\n"); }
3385 void closing() { fprintf(_cpp, " false // no trailing comma\n");
3386 OutputMap::closing();
3387 }
3388 void map(OpClassForm &opc) { fprintf(_cpp, " false"); }
3389 void map(OperandForm &oper) { fprintf(_cpp, " false"); }
3390 void map(char *name) { fprintf(_cpp, " false"); }
3391 void map(InstructForm &inst) { // Check for simple chain rule
3392 const char *chain = inst.is_simple_chain_rule(_globals) ? "true" : "false";
3393 fprintf(_cpp, " %s", chain);
3394 }
3395 };
3398 //---------------------------build_map------------------------------------
3399 // Build mapping from enumeration for densely packed operands
3400 // TO result and child types.
3401 void ArchDesc::build_map(OutputMap &map) {
3402 FILE *fp_hpp = map.decl_file();
3403 FILE *fp_cpp = map.def_file();
3404 int idx = 0;
3405 OperandForm *op;
3406 OpClassForm *opc;
3407 InstructForm *inst;
3409 // Construct this mapping
3410 map.declaration();
3411 fprintf(fp_cpp,"\n");
3412 map.definition();
3414 // Output the mapping for operands
3415 map.record_position(OutputMap::BEGIN_OPERANDS, idx );
3416 _operands.reset();
3417 for(; (op = (OperandForm*)_operands.iter()) != NULL; ) {
3418 // Ensure this is a machine-world instruction
3419 if ( op->ideal_only() ) continue;
3421 // Generate the entry for this opcode
3422 map.map(*op); fprintf(fp_cpp, ", // %d\n", idx);
3423 ++idx;
3424 };
3425 fprintf(fp_cpp, " // last operand\n");
3427 // Place all user-defined operand classes into the mapping
3428 map.record_position(OutputMap::BEGIN_OPCLASSES, idx );
3429 _opclass.reset();
3430 for(; (opc = (OpClassForm*)_opclass.iter()) != NULL; ) {
3431 map.map(*opc); fprintf(fp_cpp, ", // %d\n", idx);
3432 ++idx;
3433 };
3434 fprintf(fp_cpp, " // last operand class\n");
3436 // Place all internally defined operands into the mapping
3437 map.record_position(OutputMap::BEGIN_INTERNALS, idx );
3438 _internalOpNames.reset();
3439 char *name = NULL;
3440 for(; (name = (char *)_internalOpNames.iter()) != NULL; ) {
3441 map.map(name); fprintf(fp_cpp, ", // %d\n", idx);
3442 ++idx;
3443 };
3444 fprintf(fp_cpp, " // last internally defined operand\n");
3446 // Place all user-defined instructions into the mapping
3447 if( map.do_instructions() ) {
3448 map.record_position(OutputMap::BEGIN_INSTRUCTIONS, idx );
3449 // Output all simple instruction chain rules first
3450 map.record_position(OutputMap::BEGIN_INST_CHAIN_RULES, idx );
3451 {
3452 _instructions.reset();
3453 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3454 // Ensure this is a machine-world instruction
3455 if ( inst->ideal_only() ) continue;
3456 if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3457 if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3459 map.map(*inst); fprintf(fp_cpp, ", // %d\n", idx);
3460 ++idx;
3461 };
3462 map.record_position(OutputMap::BEGIN_REMATERIALIZE, idx );
3463 _instructions.reset();
3464 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3465 // Ensure this is a machine-world instruction
3466 if ( inst->ideal_only() ) continue;
3467 if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3468 if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3470 map.map(*inst); fprintf(fp_cpp, ", // %d\n", idx);
3471 ++idx;
3472 };
3473 map.record_position(OutputMap::END_INST_CHAIN_RULES, idx );
3474 }
3475 // Output all instructions that are NOT simple chain rules
3476 {
3477 _instructions.reset();
3478 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3479 // Ensure this is a machine-world instruction
3480 if ( inst->ideal_only() ) continue;
3481 if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3482 if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3484 map.map(*inst); fprintf(fp_cpp, ", // %d\n", idx);
3485 ++idx;
3486 };
3487 map.record_position(OutputMap::END_REMATERIALIZE, idx );
3488 _instructions.reset();
3489 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3490 // Ensure this is a machine-world instruction
3491 if ( inst->ideal_only() ) continue;
3492 if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3493 if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3495 map.map(*inst); fprintf(fp_cpp, ", // %d\n", idx);
3496 ++idx;
3497 };
3498 }
3499 fprintf(fp_cpp, " // last instruction\n");
3500 map.record_position(OutputMap::END_INSTRUCTIONS, idx );
3501 }
3502 // Finish defining table
3503 map.closing();
3504 };
3507 // Helper function for buildReduceMaps
3508 char reg_save_policy(const char *calling_convention) {
3509 char callconv;
3511 if (!strcmp(calling_convention, "NS")) callconv = 'N';
3512 else if (!strcmp(calling_convention, "SOE")) callconv = 'E';
3513 else if (!strcmp(calling_convention, "SOC")) callconv = 'C';
3514 else if (!strcmp(calling_convention, "AS")) callconv = 'A';
3515 else callconv = 'Z';
3517 return callconv;
3518 }
3520 //---------------------------generate_assertion_checks-------------------
3521 void ArchDesc::generate_adlc_verification(FILE *fp_cpp) {
3522 fprintf(fp_cpp, "\n");
3524 fprintf(fp_cpp, "#ifndef PRODUCT\n");
3525 fprintf(fp_cpp, "void Compile::adlc_verification() {\n");
3526 globalDefs().print_asserts(fp_cpp);
3527 fprintf(fp_cpp, "}\n");
3528 fprintf(fp_cpp, "#endif\n");
3529 fprintf(fp_cpp, "\n");
3530 }
3532 //---------------------------addSourceBlocks-----------------------------
3533 void ArchDesc::addSourceBlocks(FILE *fp_cpp) {
3534 if (_source.count() > 0)
3535 _source.output(fp_cpp);
3537 generate_adlc_verification(fp_cpp);
3538 }
3539 //---------------------------addHeaderBlocks-----------------------------
3540 void ArchDesc::addHeaderBlocks(FILE *fp_hpp) {
3541 if (_header.count() > 0)
3542 _header.output(fp_hpp);
3543 }
3544 //-------------------------addPreHeaderBlocks----------------------------
3545 void ArchDesc::addPreHeaderBlocks(FILE *fp_hpp) {
3546 // Output #defines from definition block
3547 globalDefs().print_defines(fp_hpp);
3549 if (_pre_header.count() > 0)
3550 _pre_header.output(fp_hpp);
3551 }
3553 //---------------------------buildReduceMaps-----------------------------
3554 // Build mapping from enumeration for densely packed operands
3555 // TO result and child types.
3556 void ArchDesc::buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp) {
3557 RegDef *rdef;
3558 RegDef *next;
3560 // The emit bodies currently require functions defined in the source block.
3562 // Build external declarations for mappings
3563 fprintf(fp_hpp, "\n");
3564 fprintf(fp_hpp, "extern const char register_save_policy[];\n");
3565 fprintf(fp_hpp, "extern const char c_reg_save_policy[];\n");
3566 fprintf(fp_hpp, "extern const int register_save_type[];\n");
3567 fprintf(fp_hpp, "\n");
3569 // Construct Save-Policy array
3570 fprintf(fp_cpp, "// Map from machine-independent register number to register_save_policy\n");
3571 fprintf(fp_cpp, "const char register_save_policy[] = {\n");
3572 _register->reset_RegDefs();
3573 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3574 next = _register->iter_RegDefs();
3575 char policy = reg_save_policy(rdef->_callconv);
3576 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3577 fprintf(fp_cpp, " '%c'%s\n", policy, comma);
3578 }
3579 fprintf(fp_cpp, "};\n\n");
3581 // Construct Native Save-Policy array
3582 fprintf(fp_cpp, "// Map from machine-independent register number to c_reg_save_policy\n");
3583 fprintf(fp_cpp, "const char c_reg_save_policy[] = {\n");
3584 _register->reset_RegDefs();
3585 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3586 next = _register->iter_RegDefs();
3587 char policy = reg_save_policy(rdef->_c_conv);
3588 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3589 fprintf(fp_cpp, " '%c'%s\n", policy, comma);
3590 }
3591 fprintf(fp_cpp, "};\n\n");
3593 // Construct Register Save Type array
3594 fprintf(fp_cpp, "// Map from machine-independent register number to register_save_type\n");
3595 fprintf(fp_cpp, "const int register_save_type[] = {\n");
3596 _register->reset_RegDefs();
3597 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3598 next = _register->iter_RegDefs();
3599 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3600 fprintf(fp_cpp, " %s%s\n", rdef->_idealtype, comma);
3601 }
3602 fprintf(fp_cpp, "};\n\n");
3604 // Construct the table for reduceOp
3605 OutputReduceOp output_reduce_op(fp_hpp, fp_cpp, _globalNames, *this);
3606 build_map(output_reduce_op);
3607 // Construct the table for leftOp
3608 OutputLeftOp output_left_op(fp_hpp, fp_cpp, _globalNames, *this);
3609 build_map(output_left_op);
3610 // Construct the table for rightOp
3611 OutputRightOp output_right_op(fp_hpp, fp_cpp, _globalNames, *this);
3612 build_map(output_right_op);
3613 // Construct the table of rule names
3614 OutputRuleName output_rule_name(fp_hpp, fp_cpp, _globalNames, *this);
3615 build_map(output_rule_name);
3616 // Construct the boolean table for subsumed operands
3617 OutputSwallowed output_swallowed(fp_hpp, fp_cpp, _globalNames, *this);
3618 build_map(output_swallowed);
3619 // // // Preserve in case we decide to use this table instead of another
3620 //// Construct the boolean table for instruction chain rules
3621 //OutputInstChainRule output_inst_chain(fp_hpp, fp_cpp, _globalNames, *this);
3622 //build_map(output_inst_chain);
3624 }
3627 //---------------------------buildMachOperGenerator---------------------------
3629 // Recurse through match tree, building path through corresponding state tree,
3630 // Until we reach the constant we are looking for.
3631 static void path_to_constant(FILE *fp, FormDict &globals,
3632 MatchNode *mnode, uint idx) {
3633 if ( ! mnode) return;
3635 unsigned position = 0;
3636 const char *result = NULL;
3637 const char *name = NULL;
3638 const char *optype = NULL;
3640 // Base Case: access constant in ideal node linked to current state node
3641 // Each type of constant has its own access function
3642 if ( (mnode->_lChild == NULL) && (mnode->_rChild == NULL)
3643 && mnode->base_operand(position, globals, result, name, optype) ) {
3644 if ( strcmp(optype,"ConI") == 0 ) {
3645 fprintf(fp, "_leaf->get_int()");
3646 } else if ( (strcmp(optype,"ConP") == 0) ) {
3647 fprintf(fp, "_leaf->bottom_type()->is_ptr()");
3648 } else if ( (strcmp(optype,"ConN") == 0) ) {
3649 fprintf(fp, "_leaf->bottom_type()->is_narrowoop()");
3650 } else if ( (strcmp(optype,"ConF") == 0) ) {
3651 fprintf(fp, "_leaf->getf()");
3652 } else if ( (strcmp(optype,"ConD") == 0) ) {
3653 fprintf(fp, "_leaf->getd()");
3654 } else if ( (strcmp(optype,"ConL") == 0) ) {
3655 fprintf(fp, "_leaf->get_long()");
3656 } else if ( (strcmp(optype,"Con")==0) ) {
3657 // !!!!! - Update if adding a machine-independent constant type
3658 fprintf(fp, "_leaf->get_int()");
3659 assert( false, "Unsupported constant type, pointer or indefinite");
3660 } else if ( (strcmp(optype,"Bool") == 0) ) {
3661 fprintf(fp, "_leaf->as_Bool()->_test._test");
3662 } else {
3663 assert( false, "Unsupported constant type");
3664 }
3665 return;
3666 }
3668 // If constant is in left child, build path and recurse
3669 uint lConsts = (mnode->_lChild) ? (mnode->_lChild->num_consts(globals) ) : 0;
3670 uint rConsts = (mnode->_rChild) ? (mnode->_rChild->num_consts(globals) ) : 0;
3671 if ( (mnode->_lChild) && (lConsts > idx) ) {
3672 fprintf(fp, "_kids[0]->");
3673 path_to_constant(fp, globals, mnode->_lChild, idx);
3674 return;
3675 }
3676 // If constant is in right child, build path and recurse
3677 if ( (mnode->_rChild) && (rConsts > (idx - lConsts) ) ) {
3678 idx = idx - lConsts;
3679 fprintf(fp, "_kids[1]->");
3680 path_to_constant(fp, globals, mnode->_rChild, idx);
3681 return;
3682 }
3683 assert( false, "ShouldNotReachHere()");
3684 }
3686 // Generate code that is executed when generating a specific Machine Operand
3687 static void genMachOperCase(FILE *fp, FormDict &globalNames, ArchDesc &AD,
3688 OperandForm &op) {
3689 const char *opName = op._ident;
3690 const char *opEnumName = AD.machOperEnum(opName);
3691 uint num_consts = op.num_consts(globalNames);
3693 // Generate the case statement for this opcode
3694 fprintf(fp, " case %s:", opEnumName);
3695 fprintf(fp, "\n return new (C) %sOper(", opName);
3696 // Access parameters for constructor from the stat object
3697 //
3698 // Build access to condition code value
3699 if ( (num_consts > 0) ) {
3700 uint i = 0;
3701 path_to_constant(fp, globalNames, op._matrule, i);
3702 for ( i = 1; i < num_consts; ++i ) {
3703 fprintf(fp, ", ");
3704 path_to_constant(fp, globalNames, op._matrule, i);
3705 }
3706 }
3707 fprintf(fp, " );\n");
3708 }
3711 // Build switch to invoke "new" MachNode or MachOper
3712 void ArchDesc::buildMachOperGenerator(FILE *fp_cpp) {
3713 int idx = 0;
3715 // Build switch to invoke 'new' for a specific MachOper
3716 fprintf(fp_cpp, "\n");
3717 fprintf(fp_cpp, "\n");
3718 fprintf(fp_cpp,
3719 "//------------------------- MachOper Generator ---------------\n");
3720 fprintf(fp_cpp,
3721 "// A switch statement on the dense-packed user-defined type system\n"
3722 "// that invokes 'new' on the corresponding class constructor.\n");
3723 fprintf(fp_cpp, "\n");
3724 fprintf(fp_cpp, "MachOper *State::MachOperGenerator");
3725 fprintf(fp_cpp, "(int opcode, Compile* C)");
3726 fprintf(fp_cpp, "{\n");
3727 fprintf(fp_cpp, "\n");
3728 fprintf(fp_cpp, " switch(opcode) {\n");
3730 // Place all user-defined operands into the mapping
3731 _operands.reset();
3732 int opIndex = 0;
3733 OperandForm *op;
3734 for( ; (op = (OperandForm*)_operands.iter()) != NULL; ) {
3735 // Ensure this is a machine-world instruction
3736 if ( op->ideal_only() ) continue;
3738 genMachOperCase(fp_cpp, _globalNames, *this, *op);
3739 };
3741 // Do not iterate over operand classes for the operand generator!!!
3743 // Place all internal operands into the mapping
3744 _internalOpNames.reset();
3745 const char *iopn;
3746 for( ; (iopn = _internalOpNames.iter()) != NULL; ) {
3747 const char *opEnumName = machOperEnum(iopn);
3748 // Generate the case statement for this opcode
3749 fprintf(fp_cpp, " case %s:", opEnumName);
3750 fprintf(fp_cpp, " return NULL;\n");
3751 };
3753 // Generate the default case for switch(opcode)
3754 fprintf(fp_cpp, " \n");
3755 fprintf(fp_cpp, " default:\n");
3756 fprintf(fp_cpp, " fprintf(stderr, \"Default MachOper Generator invoked for: \\n\");\n");
3757 fprintf(fp_cpp, " fprintf(stderr, \" opcode = %cd\\n\", opcode);\n", '%');
3758 fprintf(fp_cpp, " break;\n");
3759 fprintf(fp_cpp, " }\n");
3761 // Generate the closing for method Matcher::MachOperGenerator
3762 fprintf(fp_cpp, " return NULL;\n");
3763 fprintf(fp_cpp, "};\n");
3764 }
3767 //---------------------------buildMachNode-------------------------------------
3768 // Build a new MachNode, for MachNodeGenerator or cisc-spilling
3769 void ArchDesc::buildMachNode(FILE *fp_cpp, InstructForm *inst, const char *indent) {
3770 const char *opType = NULL;
3771 const char *opClass = inst->_ident;
3773 // Create the MachNode object
3774 fprintf(fp_cpp, "%s %sNode *node = new (C) %sNode();\n",indent, opClass,opClass);
3776 if ( (inst->num_post_match_opnds() != 0) ) {
3777 // Instruction that contains operands which are not in match rule.
3778 //
3779 // Check if the first post-match component may be an interesting def
3780 bool dont_care = false;
3781 ComponentList &comp_list = inst->_components;
3782 Component *comp = NULL;
3783 comp_list.reset();
3784 if ( comp_list.match_iter() != NULL ) dont_care = true;
3786 // Insert operands that are not in match-rule.
3787 // Only insert a DEF if the do_care flag is set
3788 comp_list.reset();
3789 while ( comp = comp_list.post_match_iter() ) {
3790 // Check if we don't care about DEFs or KILLs that are not USEs
3791 if ( dont_care && (! comp->isa(Component::USE)) ) {
3792 continue;
3793 }
3794 dont_care = true;
3795 // For each operand not in the match rule, call MachOperGenerator
3796 // with the enum for the opcode that needs to be built.
3797 ComponentList clist = inst->_components;
3798 int index = clist.operand_position(comp->_name, comp->_usedef);
3799 const char *opcode = machOperEnum(comp->_type);
3800 fprintf(fp_cpp, "%s node->set_opnd_array(%d, ", indent, index);
3801 fprintf(fp_cpp, "MachOperGenerator(%s, C));\n", opcode);
3802 }
3803 }
3804 else if ( inst->is_chain_of_constant(_globalNames, opType) ) {
3805 // An instruction that chains from a constant!
3806 // In this case, we need to subsume the constant into the node
3807 // at operand position, oper_input_base().
3808 //
3809 // Fill in the constant
3810 fprintf(fp_cpp, "%s node->_opnd_array[%d] = ", indent,
3811 inst->oper_input_base(_globalNames));
3812 // #####
3813 // Check for multiple constants and then fill them in.
3814 // Just like MachOperGenerator
3815 const char *opName = inst->_matrule->_rChild->_opType;
3816 fprintf(fp_cpp, "new (C) %sOper(", opName);
3817 // Grab operand form
3818 OperandForm *op = (_globalNames[opName])->is_operand();
3819 // Look up the number of constants
3820 uint num_consts = op->num_consts(_globalNames);
3821 if ( (num_consts > 0) ) {
3822 uint i = 0;
3823 path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3824 for ( i = 1; i < num_consts; ++i ) {
3825 fprintf(fp_cpp, ", ");
3826 path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3827 }
3828 }
3829 fprintf(fp_cpp, " );\n");
3830 // #####
3831 }
3833 // Fill in the bottom_type where requested
3834 if ( inst->captures_bottom_type(_globalNames) ) {
3835 fprintf(fp_cpp, "%s node->_bottom_type = _leaf->bottom_type();\n", indent);
3836 }
3837 if( inst->is_ideal_if() ) {
3838 fprintf(fp_cpp, "%s node->_prob = _leaf->as_If()->_prob;\n", indent);
3839 fprintf(fp_cpp, "%s node->_fcnt = _leaf->as_If()->_fcnt;\n", indent);
3840 }
3841 if( inst->is_ideal_fastlock() ) {
3842 fprintf(fp_cpp, "%s node->_counters = _leaf->as_FastLock()->counters();\n", indent);
3843 }
3845 }
3847 //---------------------------declare_cisc_version------------------------------
3848 // Build CISC version of this instruction
3849 void InstructForm::declare_cisc_version(ArchDesc &AD, FILE *fp_hpp) {
3850 if( AD.can_cisc_spill() ) {
3851 InstructForm *inst_cisc = cisc_spill_alternate();
3852 if (inst_cisc != NULL) {
3853 fprintf(fp_hpp, " virtual int cisc_operand() const { return %d; }\n", cisc_spill_operand());
3854 fprintf(fp_hpp, " virtual MachNode *cisc_version(int offset, Compile* C);\n");
3855 fprintf(fp_hpp, " virtual void use_cisc_RegMask();\n");
3856 fprintf(fp_hpp, " virtual const RegMask *cisc_RegMask() const { return _cisc_RegMask; }\n");
3857 }
3858 }
3859 }
3861 //---------------------------define_cisc_version-------------------------------
3862 // Build CISC version of this instruction
3863 bool InstructForm::define_cisc_version(ArchDesc &AD, FILE *fp_cpp) {
3864 InstructForm *inst_cisc = this->cisc_spill_alternate();
3865 if( AD.can_cisc_spill() && (inst_cisc != NULL) ) {
3866 const char *name = inst_cisc->_ident;
3867 assert( inst_cisc->num_opnds() == this->num_opnds(), "Must have same number of operands");
3868 OperandForm *cisc_oper = AD.cisc_spill_operand();
3869 assert( cisc_oper != NULL, "insanity check");
3870 const char *cisc_oper_name = cisc_oper->_ident;
3871 assert( cisc_oper_name != NULL, "insanity check");
3872 //
3873 // Set the correct reg_mask_or_stack for the cisc operand
3874 fprintf(fp_cpp, "\n");
3875 fprintf(fp_cpp, "void %sNode::use_cisc_RegMask() {\n", this->_ident);
3876 // Lookup the correct reg_mask_or_stack
3877 const char *reg_mask_name = cisc_reg_mask_name();
3878 fprintf(fp_cpp, " _cisc_RegMask = &STACK_OR_%s;\n", reg_mask_name);
3879 fprintf(fp_cpp, "}\n");
3880 //
3881 // Construct CISC version of this instruction
3882 fprintf(fp_cpp, "\n");
3883 fprintf(fp_cpp, "// Build CISC version of this instruction\n");
3884 fprintf(fp_cpp, "MachNode *%sNode::cisc_version( int offset, Compile* C ) {\n", this->_ident);
3885 // Create the MachNode object
3886 fprintf(fp_cpp, " %sNode *node = new (C) %sNode();\n", name, name);
3887 // Fill in the bottom_type where requested
3888 if ( this->captures_bottom_type(AD.globalNames()) ) {
3889 fprintf(fp_cpp, " node->_bottom_type = bottom_type();\n");
3890 }
3892 uint cur_num_opnds = num_opnds();
3893 if (cur_num_opnds > 1 && cur_num_opnds != num_unique_opnds()) {
3894 fprintf(fp_cpp," node->_num_opnds = %d;\n", num_unique_opnds());
3895 }
3897 fprintf(fp_cpp, "\n");
3898 fprintf(fp_cpp, " // Copy _idx, inputs and operands to new node\n");
3899 fprintf(fp_cpp, " fill_new_machnode(node, C);\n");
3900 // Construct operand to access [stack_pointer + offset]
3901 fprintf(fp_cpp, " // Construct operand to access [stack_pointer + offset]\n");
3902 fprintf(fp_cpp, " node->set_opnd_array(cisc_operand(), new (C) %sOper(offset));\n", cisc_oper_name);
3903 fprintf(fp_cpp, "\n");
3905 // Return result and exit scope
3906 fprintf(fp_cpp, " return node;\n");
3907 fprintf(fp_cpp, "}\n");
3908 fprintf(fp_cpp, "\n");
3909 return true;
3910 }
3911 return false;
3912 }
3914 //---------------------------declare_short_branch_methods----------------------
3915 // Build prototypes for short branch methods
3916 void InstructForm::declare_short_branch_methods(FILE *fp_hpp) {
3917 if (has_short_branch_form()) {
3918 fprintf(fp_hpp, " virtual MachNode *short_branch_version(Compile* C);\n");
3919 }
3920 }
3922 //---------------------------define_short_branch_methods-----------------------
3923 // Build definitions for short branch methods
3924 bool InstructForm::define_short_branch_methods(ArchDesc &AD, FILE *fp_cpp) {
3925 if (has_short_branch_form()) {
3926 InstructForm *short_branch = short_branch_form();
3927 const char *name = short_branch->_ident;
3929 // Construct short_branch_version() method.
3930 fprintf(fp_cpp, "// Build short branch version of this instruction\n");
3931 fprintf(fp_cpp, "MachNode *%sNode::short_branch_version(Compile* C) {\n", this->_ident);
3932 // Create the MachNode object
3933 fprintf(fp_cpp, " %sNode *node = new (C) %sNode();\n", name, name);
3934 if( is_ideal_if() ) {
3935 fprintf(fp_cpp, " node->_prob = _prob;\n");
3936 fprintf(fp_cpp, " node->_fcnt = _fcnt;\n");
3937 }
3938 // Fill in the bottom_type where requested
3939 if ( this->captures_bottom_type(AD.globalNames()) ) {
3940 fprintf(fp_cpp, " node->_bottom_type = bottom_type();\n");
3941 }
3943 fprintf(fp_cpp, "\n");
3944 // Short branch version must use same node index for access
3945 // through allocator's tables
3946 fprintf(fp_cpp, " // Copy _idx, inputs and operands to new node\n");
3947 fprintf(fp_cpp, " fill_new_machnode(node, C);\n");
3949 // Return result and exit scope
3950 fprintf(fp_cpp, " return node;\n");
3951 fprintf(fp_cpp, "}\n");
3952 fprintf(fp_cpp,"\n");
3953 return true;
3954 }
3955 return false;
3956 }
3959 //---------------------------buildMachNodeGenerator----------------------------
3960 // Build switch to invoke appropriate "new" MachNode for an opcode
3961 void ArchDesc::buildMachNodeGenerator(FILE *fp_cpp) {
3963 // Build switch to invoke 'new' for a specific MachNode
3964 fprintf(fp_cpp, "\n");
3965 fprintf(fp_cpp, "\n");
3966 fprintf(fp_cpp,
3967 "//------------------------- MachNode Generator ---------------\n");
3968 fprintf(fp_cpp,
3969 "// A switch statement on the dense-packed user-defined type system\n"
3970 "// that invokes 'new' on the corresponding class constructor.\n");
3971 fprintf(fp_cpp, "\n");
3972 fprintf(fp_cpp, "MachNode *State::MachNodeGenerator");
3973 fprintf(fp_cpp, "(int opcode, Compile* C)");
3974 fprintf(fp_cpp, "{\n");
3975 fprintf(fp_cpp, " switch(opcode) {\n");
3977 // Provide constructor for all user-defined instructions
3978 _instructions.reset();
3979 int opIndex = operandFormCount();
3980 InstructForm *inst;
3981 for( ; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3982 // Ensure that matrule is defined.
3983 if ( inst->_matrule == NULL ) continue;
3985 int opcode = opIndex++;
3986 const char *opClass = inst->_ident;
3987 char *opType = NULL;
3989 // Generate the case statement for this instruction
3990 fprintf(fp_cpp, " case %s_rule:", opClass);
3992 // Start local scope
3993 fprintf(fp_cpp, " {\n");
3994 // Generate code to construct the new MachNode
3995 buildMachNode(fp_cpp, inst, " ");
3996 // Return result and exit scope
3997 fprintf(fp_cpp, " return node;\n");
3998 fprintf(fp_cpp, " }\n");
3999 }
4001 // Generate the default case for switch(opcode)
4002 fprintf(fp_cpp, " \n");
4003 fprintf(fp_cpp, " default:\n");
4004 fprintf(fp_cpp, " fprintf(stderr, \"Default MachNode Generator invoked for: \\n\");\n");
4005 fprintf(fp_cpp, " fprintf(stderr, \" opcode = %cd\\n\", opcode);\n", '%');
4006 fprintf(fp_cpp, " break;\n");
4007 fprintf(fp_cpp, " };\n");
4009 // Generate the closing for method Matcher::MachNodeGenerator
4010 fprintf(fp_cpp, " return NULL;\n");
4011 fprintf(fp_cpp, "}\n");
4012 }
4015 //---------------------------buildInstructMatchCheck--------------------------
4016 // Output the method to Matcher which checks whether or not a specific
4017 // instruction has a matching rule for the host architecture.
4018 void ArchDesc::buildInstructMatchCheck(FILE *fp_cpp) const {
4019 fprintf(fp_cpp, "\n\n");
4020 fprintf(fp_cpp, "const bool Matcher::has_match_rule(int opcode) {\n");
4021 fprintf(fp_cpp, " assert(_last_machine_leaf < opcode && opcode < _last_opcode, \"opcode in range\");\n");
4022 fprintf(fp_cpp, " return _hasMatchRule[opcode];\n");
4023 fprintf(fp_cpp, "}\n\n");
4025 fprintf(fp_cpp, "const bool Matcher::_hasMatchRule[_last_opcode] = {\n");
4026 int i;
4027 for (i = 0; i < _last_opcode - 1; i++) {
4028 fprintf(fp_cpp, " %-5s, // %s\n",
4029 _has_match_rule[i] ? "true" : "false",
4030 NodeClassNames[i]);
4031 }
4032 fprintf(fp_cpp, " %-5s // %s\n",
4033 _has_match_rule[i] ? "true" : "false",
4034 NodeClassNames[i]);
4035 fprintf(fp_cpp, "};\n");
4036 }
4038 //---------------------------buildFrameMethods---------------------------------
4039 // Output the methods to Matcher which specify frame behavior
4040 void ArchDesc::buildFrameMethods(FILE *fp_cpp) {
4041 fprintf(fp_cpp,"\n\n");
4042 // Stack Direction
4043 fprintf(fp_cpp,"bool Matcher::stack_direction() const { return %s; }\n\n",
4044 _frame->_direction ? "true" : "false");
4045 // Sync Stack Slots
4046 fprintf(fp_cpp,"int Compile::sync_stack_slots() const { return %s; }\n\n",
4047 _frame->_sync_stack_slots);
4048 // Java Stack Alignment
4049 fprintf(fp_cpp,"uint Matcher::stack_alignment_in_bytes() { return %s; }\n\n",
4050 _frame->_alignment);
4051 // Java Return Address Location
4052 fprintf(fp_cpp,"OptoReg::Name Matcher::return_addr() const {");
4053 if (_frame->_return_addr_loc) {
4054 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4055 _frame->_return_addr);
4056 }
4057 else {
4058 fprintf(fp_cpp," return OptoReg::stack2reg(%s); }\n\n",
4059 _frame->_return_addr);
4060 }
4061 // Java Stack Slot Preservation
4062 fprintf(fp_cpp,"uint Compile::in_preserve_stack_slots() ");
4063 fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_in_preserve_slots);
4064 // Top Of Stack Slot Preservation, for both Java and C
4065 fprintf(fp_cpp,"uint Compile::out_preserve_stack_slots() ");
4066 fprintf(fp_cpp,"{ return SharedRuntime::out_preserve_stack_slots(); }\n\n");
4067 // varargs C out slots killed
4068 fprintf(fp_cpp,"uint Compile::varargs_C_out_slots_killed() const ");
4069 fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_varargs_C_out_slots_killed);
4070 // Java Argument Position
4071 fprintf(fp_cpp,"void Matcher::calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length, bool is_outgoing) {\n");
4072 fprintf(fp_cpp,"%s\n", _frame->_calling_convention);
4073 fprintf(fp_cpp,"}\n\n");
4074 // Native Argument Position
4075 fprintf(fp_cpp,"void Matcher::c_calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length) {\n");
4076 fprintf(fp_cpp,"%s\n", _frame->_c_calling_convention);
4077 fprintf(fp_cpp,"}\n\n");
4078 // Java Return Value Location
4079 fprintf(fp_cpp,"OptoRegPair Matcher::return_value(int ideal_reg, bool is_outgoing) {\n");
4080 fprintf(fp_cpp,"%s\n", _frame->_return_value);
4081 fprintf(fp_cpp,"}\n\n");
4082 // Native Return Value Location
4083 fprintf(fp_cpp,"OptoRegPair Matcher::c_return_value(int ideal_reg, bool is_outgoing) {\n");
4084 fprintf(fp_cpp,"%s\n", _frame->_c_return_value);
4085 fprintf(fp_cpp,"}\n\n");
4087 // Inline Cache Register, mask definition, and encoding
4088 fprintf(fp_cpp,"OptoReg::Name Matcher::inline_cache_reg() {");
4089 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4090 _frame->_inline_cache_reg);
4091 fprintf(fp_cpp,"int Matcher::inline_cache_reg_encode() {");
4092 fprintf(fp_cpp," return _regEncode[inline_cache_reg()]; }\n\n");
4094 // Interpreter's Method Oop Register, mask definition, and encoding
4095 fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_method_oop_reg() {");
4096 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4097 _frame->_interpreter_method_oop_reg);
4098 fprintf(fp_cpp,"int Matcher::interpreter_method_oop_reg_encode() {");
4099 fprintf(fp_cpp," return _regEncode[interpreter_method_oop_reg()]; }\n\n");
4101 // Interpreter's Frame Pointer Register, mask definition, and encoding
4102 fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_frame_pointer_reg() {");
4103 if (_frame->_interpreter_frame_pointer_reg == NULL)
4104 fprintf(fp_cpp," return OptoReg::Bad; }\n\n");
4105 else
4106 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4107 _frame->_interpreter_frame_pointer_reg);
4109 // Frame Pointer definition
4110 /* CNC - I can not contemplate having a different frame pointer between
4111 Java and native code; makes my head hurt to think about it.
4112 fprintf(fp_cpp,"OptoReg::Name Matcher::frame_pointer() const {");
4113 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4114 _frame->_frame_pointer);
4115 */
4116 // (Native) Frame Pointer definition
4117 fprintf(fp_cpp,"OptoReg::Name Matcher::c_frame_pointer() const {");
4118 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4119 _frame->_frame_pointer);
4121 // Number of callee-save + always-save registers for calling convention
4122 fprintf(fp_cpp, "// Number of callee-save + always-save registers\n");
4123 fprintf(fp_cpp, "int Matcher::number_of_saved_registers() {\n");
4124 RegDef *rdef;
4125 int nof_saved_registers = 0;
4126 _register->reset_RegDefs();
4127 while( (rdef = _register->iter_RegDefs()) != NULL ) {
4128 if( !strcmp(rdef->_callconv, "SOE") || !strcmp(rdef->_callconv, "AS") )
4129 ++nof_saved_registers;
4130 }
4131 fprintf(fp_cpp, " return %d;\n", nof_saved_registers);
4132 fprintf(fp_cpp, "};\n\n");
4133 }
4138 static int PrintAdlcCisc = 0;
4139 //---------------------------identify_cisc_spilling----------------------------
4140 // Get info for the CISC_oracle and MachNode::cisc_version()
4141 void ArchDesc::identify_cisc_spill_instructions() {
4143 // Find the user-defined operand for cisc-spilling
4144 if( _frame->_cisc_spilling_operand_name != NULL ) {
4145 const Form *form = _globalNames[_frame->_cisc_spilling_operand_name];
4146 OperandForm *oper = form ? form->is_operand() : NULL;
4147 // Verify the user's suggestion
4148 if( oper != NULL ) {
4149 // Ensure that match field is defined.
4150 if ( oper->_matrule != NULL ) {
4151 MatchRule &mrule = *oper->_matrule;
4152 if( strcmp(mrule._opType,"AddP") == 0 ) {
4153 MatchNode *left = mrule._lChild;
4154 MatchNode *right= mrule._rChild;
4155 if( left != NULL && right != NULL ) {
4156 const Form *left_op = _globalNames[left->_opType]->is_operand();
4157 const Form *right_op = _globalNames[right->_opType]->is_operand();
4158 if( (left_op != NULL && right_op != NULL)
4159 && (left_op->interface_type(_globalNames) == Form::register_interface)
4160 && (right_op->interface_type(_globalNames) == Form::constant_interface) ) {
4161 // Successfully verified operand
4162 set_cisc_spill_operand( oper );
4163 if( _cisc_spill_debug ) {
4164 fprintf(stderr, "\n\nVerified CISC-spill operand %s\n\n", oper->_ident);
4165 }
4166 }
4167 }
4168 }
4169 }
4170 }
4171 }
4173 if( cisc_spill_operand() != NULL ) {
4174 // N^2 comparison of instructions looking for a cisc-spilling version
4175 _instructions.reset();
4176 InstructForm *instr;
4177 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
4178 // Ensure that match field is defined.
4179 if ( instr->_matrule == NULL ) continue;
4181 MatchRule &mrule = *instr->_matrule;
4182 Predicate *pred = instr->build_predicate();
4184 // Grab the machine type of the operand
4185 const char *rootOp = instr->_ident;
4186 mrule._machType = rootOp;
4188 // Find result type for match
4189 const char *result = instr->reduce_result();
4191 if( PrintAdlcCisc ) fprintf(stderr, " new instruction %s \n", instr->_ident ? instr->_ident : " ");
4192 bool found_cisc_alternate = false;
4193 _instructions.reset2();
4194 InstructForm *instr2;
4195 for( ; !found_cisc_alternate && (instr2 = (InstructForm*)_instructions.iter2()) != NULL; ) {
4196 // Ensure that match field is defined.
4197 if( PrintAdlcCisc ) fprintf(stderr, " instr2 == %s \n", instr2->_ident ? instr2->_ident : " ");
4198 if ( instr2->_matrule != NULL
4199 && (instr != instr2 ) // Skip self
4200 && (instr2->reduce_result() != NULL) // want same result
4201 && (strcmp(result, instr2->reduce_result()) == 0)) {
4202 MatchRule &mrule2 = *instr2->_matrule;
4203 Predicate *pred2 = instr2->build_predicate();
4204 found_cisc_alternate = instr->cisc_spills_to(*this, instr2);
4205 }
4206 }
4207 }
4208 }
4209 }
4211 //---------------------------build_cisc_spilling-------------------------------
4212 // Get info for the CISC_oracle and MachNode::cisc_version()
4213 void ArchDesc::build_cisc_spill_instructions(FILE *fp_hpp, FILE *fp_cpp) {
4214 // Output the table for cisc spilling
4215 fprintf(fp_cpp, "// The following instructions can cisc-spill\n");
4216 _instructions.reset();
4217 InstructForm *inst = NULL;
4218 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
4219 // Ensure this is a machine-world instruction
4220 if ( inst->ideal_only() ) continue;
4221 const char *inst_name = inst->_ident;
4222 int operand = inst->cisc_spill_operand();
4223 if( operand != AdlcVMDeps::Not_cisc_spillable ) {
4224 InstructForm *inst2 = inst->cisc_spill_alternate();
4225 fprintf(fp_cpp, "// %s can cisc-spill operand %d to %s\n", inst->_ident, operand, inst2->_ident);
4226 }
4227 }
4228 fprintf(fp_cpp, "\n\n");
4229 }
4231 //---------------------------identify_short_branches----------------------------
4232 // Get info for our short branch replacement oracle.
4233 void ArchDesc::identify_short_branches() {
4234 // Walk over all instructions, checking to see if they match a short
4235 // branching alternate.
4236 _instructions.reset();
4237 InstructForm *instr;
4238 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4239 // The instruction must have a match rule.
4240 if (instr->_matrule != NULL &&
4241 instr->is_short_branch()) {
4243 _instructions.reset2();
4244 InstructForm *instr2;
4245 while( (instr2 = (InstructForm*)_instructions.iter2()) != NULL ) {
4246 instr2->check_branch_variant(*this, instr);
4247 }
4248 }
4249 }
4250 }
4253 //---------------------------identify_unique_operands---------------------------
4254 // Identify unique operands.
4255 void ArchDesc::identify_unique_operands() {
4256 // Walk over all instructions.
4257 _instructions.reset();
4258 InstructForm *instr;
4259 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4260 // Ensure this is a machine-world instruction
4261 if (!instr->ideal_only()) {
4262 instr->set_unique_opnds();
4263 }
4264 }
4265 }