Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/adlc/output_c.cpp@9003f35baaa0
src/share/vm/adlc/output_c.cpp
Tue, 07 Jan 2014 14:26:12 -0800
- author
- twisti
- date
- Tue, 07 Jan 2014 14:26:12 -0800
- changeset 9846
- 9003f35baaa0
- parent 9333
- 2fccf735a116
- child 9852
- 70aa912cebe5
- permissions
- -rw-r--r--
8022263: use same Clang warnings on BSD as on Linux
Reviewed-by: kvn, iveresov
1 /*
2 * Copyright (c) 1998, 2018, 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 // Define an array containing the machine register names, strings.
39 static void defineRegNames(FILE *fp, RegisterForm *registers) {
40 if (registers) {
41 fprintf(fp,"\n");
42 fprintf(fp,"// An array of character pointers to machine register names.\n");
43 fprintf(fp,"const char *Matcher::regName[REG_COUNT] = {\n");
45 // Output the register name for each register in the allocation classes
46 RegDef *reg_def = NULL;
47 RegDef *next = NULL;
48 registers->reset_RegDefs();
49 for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
50 next = registers->iter_RegDefs();
51 const char *comma = (next != NULL) ? "," : " // no trailing comma";
52 fprintf(fp," \"%s\"%s\n", reg_def->_regname, comma);
53 }
55 // Finish defining enumeration
56 fprintf(fp,"};\n");
58 fprintf(fp,"\n");
59 fprintf(fp,"// An array of character pointers to machine register names.\n");
60 fprintf(fp,"const VMReg OptoReg::opto2vm[REG_COUNT] = {\n");
61 reg_def = NULL;
62 next = NULL;
63 registers->reset_RegDefs();
64 for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
65 next = registers->iter_RegDefs();
66 const char *comma = (next != NULL) ? "," : " // no trailing comma";
67 fprintf(fp,"\t%s%s\n", reg_def->_concrete, comma);
68 }
69 // Finish defining array
70 fprintf(fp,"\t};\n");
71 fprintf(fp,"\n");
73 fprintf(fp," OptoReg::Name OptoReg::vm2opto[ConcreteRegisterImpl::number_of_registers];\n");
75 }
76 }
78 // Define an array containing the machine register encoding values
79 static void defineRegEncodes(FILE *fp, RegisterForm *registers) {
80 if (registers) {
81 fprintf(fp,"\n");
82 fprintf(fp,"// An array of the machine register encode values\n");
83 fprintf(fp,"const unsigned char Matcher::_regEncode[REG_COUNT] = {\n");
85 // Output the register encoding for each register in the allocation classes
86 RegDef *reg_def = NULL;
87 RegDef *next = NULL;
88 registers->reset_RegDefs();
89 for (reg_def = registers->iter_RegDefs(); reg_def != NULL; reg_def = next) {
90 next = registers->iter_RegDefs();
91 const char* register_encode = reg_def->register_encode();
92 const char *comma = (next != NULL) ? "," : " // no trailing comma";
93 int encval;
94 if (!ADLParser::is_int_token(register_encode, encval)) {
95 fprintf(fp," %s%s // %s\n", register_encode, comma, reg_def->_regname);
96 } else {
97 // Output known constants in hex char format (backward compatibility).
98 assert(encval < 256, "Exceeded supported width for register encoding");
99 fprintf(fp," (unsigned char)'\\x%X'%s // %s\n", encval, comma, reg_def->_regname);
100 }
101 }
102 // Finish defining enumeration
103 fprintf(fp,"};\n");
105 } // Done defining array
106 }
108 // Output an enumeration of register class names
109 static void defineRegClassEnum(FILE *fp, RegisterForm *registers) {
110 if (registers) {
111 // Output an enumeration of register class names
112 fprintf(fp,"\n");
113 fprintf(fp,"// Enumeration of register class names\n");
114 fprintf(fp, "enum machRegisterClass {\n");
115 registers->_rclasses.reset();
116 for (const char *class_name = NULL; (class_name = registers->_rclasses.iter()) != NULL;) {
117 const char * class_name_to_upper = toUpper(class_name);
118 fprintf(fp," %s,\n", class_name_to_upper);
119 delete[] class_name_to_upper;
120 }
121 // Finish defining enumeration
122 fprintf(fp, " _last_Mach_Reg_Class\n");
123 fprintf(fp, "};\n");
124 }
125 }
127 // Declare an enumeration of user-defined register classes
128 // and a list of register masks, one for each class.
129 void ArchDesc::declare_register_masks(FILE *fp_hpp) {
130 const char *rc_name;
132 if (_register) {
133 // Build enumeration of user-defined register classes.
134 defineRegClassEnum(fp_hpp, _register);
136 // Generate a list of register masks, one for each class.
137 fprintf(fp_hpp,"\n");
138 fprintf(fp_hpp,"// Register masks, one for each register class.\n");
139 _register->_rclasses.reset();
140 for (rc_name = NULL; (rc_name = _register->_rclasses.iter()) != NULL;) {
141 RegClass *reg_class = _register->getRegClass(rc_name);
142 assert(reg_class, "Using an undefined register class");
143 reg_class->declare_register_masks(fp_hpp);
144 }
145 }
146 }
148 // Generate an enumeration of user-defined register classes
149 // and a list of register masks, one for each class.
150 void ArchDesc::build_register_masks(FILE *fp_cpp) {
151 const char *rc_name;
153 if (_register) {
154 // Generate a list of register masks, one for each class.
155 fprintf(fp_cpp,"\n");
156 fprintf(fp_cpp,"// Register masks, one for each register class.\n");
157 _register->_rclasses.reset();
158 for (rc_name = NULL; (rc_name = _register->_rclasses.iter()) != NULL;) {
159 RegClass *reg_class = _register->getRegClass(rc_name);
160 assert(reg_class, "Using an undefined register class");
161 reg_class->build_register_masks(fp_cpp);
162 }
163 }
164 }
166 // Compute an index for an array in the pipeline_reads_NNN arrays
167 static int pipeline_reads_initializer(FILE *fp_cpp, NameList &pipeline_reads, PipeClassForm *pipeclass)
168 {
169 int templen = 1;
170 int paramcount = 0;
171 const char *paramname;
173 if (pipeclass->_parameters.count() == 0)
174 return -1;
176 pipeclass->_parameters.reset();
177 paramname = pipeclass->_parameters.iter();
178 const PipeClassOperandForm *pipeopnd =
179 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
180 if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
181 pipeclass->_parameters.reset();
183 while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
184 const PipeClassOperandForm *tmppipeopnd =
185 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
187 if (tmppipeopnd)
188 templen += 10 + (int)strlen(tmppipeopnd->_stage);
189 else
190 templen += 19;
192 paramcount++;
193 }
195 // See if the count is zero
196 if (paramcount == 0) {
197 return -1;
198 }
200 char *operand_stages = new char [templen];
201 operand_stages[0] = 0;
202 int i = 0;
203 templen = 0;
205 pipeclass->_parameters.reset();
206 paramname = pipeclass->_parameters.iter();
207 pipeopnd = (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
208 if (pipeopnd && !pipeopnd->isWrite() && strcmp(pipeopnd->_stage, "Universal"))
209 pipeclass->_parameters.reset();
211 while ( (paramname = pipeclass->_parameters.iter()) != NULL ) {
212 const PipeClassOperandForm *tmppipeopnd =
213 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
214 templen += sprintf(&operand_stages[templen], " stage_%s%c\n",
215 tmppipeopnd ? tmppipeopnd->_stage : "undefined",
216 (++i < paramcount ? ',' : ' ') );
217 }
219 // See if the same string is in the table
220 int ndx = pipeline_reads.index(operand_stages);
222 // No, add it to the table
223 if (ndx < 0) {
224 pipeline_reads.addName(operand_stages);
225 ndx = pipeline_reads.index(operand_stages);
227 fprintf(fp_cpp, "static const enum machPipelineStages pipeline_reads_%03d[%d] = {\n%s};\n\n",
228 ndx+1, paramcount, operand_stages);
229 }
230 else
231 delete [] operand_stages;
233 return (ndx);
234 }
236 // Compute an index for an array in the pipeline_res_stages_NNN arrays
237 static int pipeline_res_stages_initializer(
238 FILE *fp_cpp,
239 PipelineForm *pipeline,
240 NameList &pipeline_res_stages,
241 PipeClassForm *pipeclass)
242 {
243 const PipeClassResourceForm *piperesource;
244 int * res_stages = new int [pipeline->_rescount];
245 int i;
247 for (i = 0; i < pipeline->_rescount; i++)
248 res_stages[i] = 0;
250 for (pipeclass->_resUsage.reset();
251 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
252 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
253 for (i = 0; i < pipeline->_rescount; i++)
254 if ((1 << i) & used_mask) {
255 int stage = pipeline->_stages.index(piperesource->_stage);
256 if (res_stages[i] < stage+1)
257 res_stages[i] = stage+1;
258 }
259 }
261 // Compute the length needed for the resource list
262 int commentlen = 0;
263 int max_stage = 0;
264 for (i = 0; i < pipeline->_rescount; i++) {
265 if (res_stages[i] == 0) {
266 if (max_stage < 9)
267 max_stage = 9;
268 }
269 else {
270 int stagelen = (int)strlen(pipeline->_stages.name(res_stages[i]-1));
271 if (max_stage < stagelen)
272 max_stage = stagelen;
273 }
275 commentlen += (int)strlen(pipeline->_reslist.name(i));
276 }
278 int templen = 1 + commentlen + pipeline->_rescount * (max_stage + 14);
280 // Allocate space for the resource list
281 char * resource_stages = new char [templen];
283 templen = 0;
284 for (i = 0; i < pipeline->_rescount; i++) {
285 const char * const resname =
286 res_stages[i] == 0 ? "undefined" : pipeline->_stages.name(res_stages[i]-1);
288 templen += sprintf(&resource_stages[templen], " stage_%s%-*s // %s\n",
289 resname, max_stage - (int)strlen(resname) + 1,
290 (i < pipeline->_rescount-1) ? "," : "",
291 pipeline->_reslist.name(i));
292 }
294 // See if the same string is in the table
295 int ndx = pipeline_res_stages.index(resource_stages);
297 // No, add it to the table
298 if (ndx < 0) {
299 pipeline_res_stages.addName(resource_stages);
300 ndx = pipeline_res_stages.index(resource_stages);
302 fprintf(fp_cpp, "static const enum machPipelineStages pipeline_res_stages_%03d[%d] = {\n%s};\n\n",
303 ndx+1, pipeline->_rescount, resource_stages);
304 }
305 else
306 delete [] resource_stages;
308 delete [] res_stages;
310 return (ndx);
311 }
313 // Compute an index for an array in the pipeline_res_cycles_NNN arrays
314 static int pipeline_res_cycles_initializer(
315 FILE *fp_cpp,
316 PipelineForm *pipeline,
317 NameList &pipeline_res_cycles,
318 PipeClassForm *pipeclass)
319 {
320 const PipeClassResourceForm *piperesource;
321 int * res_cycles = new int [pipeline->_rescount];
322 int i;
324 for (i = 0; i < pipeline->_rescount; i++)
325 res_cycles[i] = 0;
327 for (pipeclass->_resUsage.reset();
328 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
329 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
330 for (i = 0; i < pipeline->_rescount; i++)
331 if ((1 << i) & used_mask) {
332 int cycles = piperesource->_cycles;
333 if (res_cycles[i] < cycles)
334 res_cycles[i] = cycles;
335 }
336 }
338 // Pre-compute the string length
339 int templen;
340 int cyclelen = 0, commentlen = 0;
341 int max_cycles = 0;
342 char temp[32];
344 for (i = 0; i < pipeline->_rescount; i++) {
345 if (max_cycles < res_cycles[i])
346 max_cycles = res_cycles[i];
347 templen = sprintf(temp, "%d", res_cycles[i]);
348 if (cyclelen < templen)
349 cyclelen = templen;
350 commentlen += (int)strlen(pipeline->_reslist.name(i));
351 }
353 templen = 1 + commentlen + (cyclelen + 8) * pipeline->_rescount;
355 // Allocate space for the resource list
356 char * resource_cycles = new char [templen];
358 templen = 0;
360 for (i = 0; i < pipeline->_rescount; i++) {
361 templen += sprintf(&resource_cycles[templen], " %*d%c // %s\n",
362 cyclelen, res_cycles[i], (i < pipeline->_rescount-1) ? ',' : ' ', pipeline->_reslist.name(i));
363 }
365 // See if the same string is in the table
366 int ndx = pipeline_res_cycles.index(resource_cycles);
368 // No, add it to the table
369 if (ndx < 0) {
370 pipeline_res_cycles.addName(resource_cycles);
371 ndx = pipeline_res_cycles.index(resource_cycles);
373 fprintf(fp_cpp, "static const uint pipeline_res_cycles_%03d[%d] = {\n%s};\n\n",
374 ndx+1, pipeline->_rescount, resource_cycles);
375 }
376 else
377 delete [] resource_cycles;
379 delete [] res_cycles;
381 return (ndx);
382 }
384 //typedef unsigned long long uint64_t;
386 // Compute an index for an array in the pipeline_res_mask_NNN arrays
387 static int pipeline_res_mask_initializer(
388 FILE *fp_cpp,
389 PipelineForm *pipeline,
390 NameList &pipeline_res_mask,
391 NameList &pipeline_res_args,
392 PipeClassForm *pipeclass)
393 {
394 const PipeClassResourceForm *piperesource;
395 const uint rescount = pipeline->_rescount;
396 const uint maxcycleused = pipeline->_maxcycleused;
397 const uint cyclemasksize = (maxcycleused + 31) >> 5;
399 int i, j;
400 int element_count = 0;
401 uint *res_mask = new uint [cyclemasksize];
402 uint resources_used = 0;
403 uint resources_used_exclusively = 0;
405 for (pipeclass->_resUsage.reset();
406 (piperesource = (const PipeClassResourceForm*)pipeclass->_resUsage.iter()) != NULL; ) {
407 element_count++;
408 }
410 // Pre-compute the string length
411 int templen;
412 int commentlen = 0;
413 int max_cycles = 0;
415 int cyclelen = ((maxcycleused + 3) >> 2);
416 int masklen = (rescount + 3) >> 2;
418 int cycledigit = 0;
419 for (i = maxcycleused; i > 0; i /= 10)
420 cycledigit++;
422 int maskdigit = 0;
423 for (i = rescount; i > 0; i /= 10)
424 maskdigit++;
426 static const char* pipeline_use_cycle_mask = "Pipeline_Use_Cycle_Mask";
427 static const char* pipeline_use_element = "Pipeline_Use_Element";
429 templen = 1 +
430 (int)(strlen(pipeline_use_cycle_mask) + (int)strlen(pipeline_use_element) +
431 (cyclemasksize * 12) + masklen + (cycledigit * 2) + 30) * element_count;
433 // Allocate space for the resource list
434 char * resource_mask = new char [templen];
435 char * last_comma = NULL;
437 templen = 0;
439 for (pipeclass->_resUsage.reset();
440 (piperesource = (const PipeClassResourceForm*)pipeclass->_resUsage.iter()) != NULL; ) {
441 int used_mask = pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
443 if (!used_mask) {
444 fprintf(stderr, "*** used_mask is 0 ***\n");
445 }
447 resources_used |= used_mask;
449 uint lb, ub;
451 for (lb = 0; (used_mask & (1 << lb)) == 0; lb++);
452 for (ub = 31; (used_mask & (1 << ub)) == 0; ub--);
454 if (lb == ub) {
455 resources_used_exclusively |= used_mask;
456 }
458 int formatlen =
459 sprintf(&resource_mask[templen], " %s(0x%0*x, %*d, %*d, %s %s(",
460 pipeline_use_element,
461 masklen, used_mask,
462 cycledigit, lb, cycledigit, ub,
463 ((used_mask & (used_mask-1)) != 0) ? "true, " : "false,",
464 pipeline_use_cycle_mask);
466 templen += formatlen;
468 memset(res_mask, 0, cyclemasksize * sizeof(uint));
470 int cycles = piperesource->_cycles;
471 uint stage = pipeline->_stages.index(piperesource->_stage);
472 if ((uint)NameList::Not_in_list == stage) {
473 fprintf(stderr,
474 "pipeline_res_mask_initializer: "
475 "semantic error: "
476 "pipeline stage undeclared: %s\n",
477 piperesource->_stage);
478 exit(1);
479 }
480 uint upper_limit = stage + cycles - 1;
481 uint lower_limit = stage - 1;
482 uint upper_idx = upper_limit >> 5;
483 uint lower_idx = lower_limit >> 5;
484 uint upper_position = upper_limit & 0x1f;
485 uint lower_position = lower_limit & 0x1f;
487 uint mask = (((uint)1) << upper_position) - 1;
489 while (upper_idx > lower_idx) {
490 res_mask[upper_idx--] |= mask;
491 mask = (uint)-1;
492 }
494 mask -= (((uint)1) << lower_position) - 1;
495 res_mask[upper_idx] |= mask;
497 for (j = cyclemasksize-1; j >= 0; j--) {
498 formatlen =
499 sprintf(&resource_mask[templen], "0x%08x%s", res_mask[j], j > 0 ? ", " : "");
500 templen += formatlen;
501 }
503 resource_mask[templen++] = ')';
504 resource_mask[templen++] = ')';
505 last_comma = &resource_mask[templen];
506 resource_mask[templen++] = ',';
507 resource_mask[templen++] = '\n';
508 }
510 resource_mask[templen] = 0;
511 if (last_comma) {
512 last_comma[0] = ' ';
513 }
515 // See if the same string is in the table
516 int ndx = pipeline_res_mask.index(resource_mask);
518 // No, add it to the table
519 if (ndx < 0) {
520 pipeline_res_mask.addName(resource_mask);
521 ndx = pipeline_res_mask.index(resource_mask);
523 if (strlen(resource_mask) > 0)
524 fprintf(fp_cpp, "static const Pipeline_Use_Element pipeline_res_mask_%03d[%d] = {\n%s};\n\n",
525 ndx+1, element_count, resource_mask);
527 char* args = new char [9 + 2*masklen + maskdigit];
529 sprintf(args, "0x%0*x, 0x%0*x, %*d",
530 masklen, resources_used,
531 masklen, resources_used_exclusively,
532 maskdigit, element_count);
534 pipeline_res_args.addName(args);
535 }
536 else {
537 delete [] resource_mask;
538 }
540 delete [] res_mask;
541 //delete [] res_masks;
543 return (ndx);
544 }
546 void ArchDesc::build_pipe_classes(FILE *fp_cpp) {
547 const char *classname;
548 const char *resourcename;
549 int resourcenamelen = 0;
550 NameList pipeline_reads;
551 NameList pipeline_res_stages;
552 NameList pipeline_res_cycles;
553 NameList pipeline_res_masks;
554 NameList pipeline_res_args;
555 const int default_latency = 1;
556 const int non_operand_latency = 0;
557 const int node_latency = 0;
559 if (!_pipeline) {
560 fprintf(fp_cpp, "uint Node::latency(uint i) const {\n");
561 fprintf(fp_cpp, " // assert(false, \"pipeline functionality is not defined\");\n");
562 fprintf(fp_cpp, " return %d;\n", non_operand_latency);
563 fprintf(fp_cpp, "}\n");
564 return;
565 }
567 fprintf(fp_cpp, "\n");
568 fprintf(fp_cpp, "//------------------Pipeline Methods-----------------------------------------\n");
569 fprintf(fp_cpp, "#ifndef PRODUCT\n");
570 fprintf(fp_cpp, "const char * Pipeline::stageName(uint s) {\n");
571 fprintf(fp_cpp, " static const char * const _stage_names[] = {\n");
572 fprintf(fp_cpp, " \"undefined\"");
574 for (int s = 0; s < _pipeline->_stagecnt; s++)
575 fprintf(fp_cpp, ", \"%s\"", _pipeline->_stages.name(s));
577 fprintf(fp_cpp, "\n };\n\n");
578 fprintf(fp_cpp, " return (s <= %d ? _stage_names[s] : \"???\");\n",
579 _pipeline->_stagecnt);
580 fprintf(fp_cpp, "}\n");
581 fprintf(fp_cpp, "#endif\n\n");
583 fprintf(fp_cpp, "uint Pipeline::functional_unit_latency(uint start, const Pipeline *pred) const {\n");
584 fprintf(fp_cpp, " // See if the functional units overlap\n");
585 #if 0
586 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
587 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
588 fprintf(fp_cpp, " tty->print(\"# functional_unit_latency: start == %%d, this->exclusively == 0x%%03x, pred->exclusively == 0x%%03x\\n\", start, resourcesUsedExclusively(), pred->resourcesUsedExclusively());\n");
589 fprintf(fp_cpp, " }\n");
590 fprintf(fp_cpp, "#endif\n\n");
591 #endif
592 fprintf(fp_cpp, " uint mask = resourcesUsedExclusively() & pred->resourcesUsedExclusively();\n");
593 fprintf(fp_cpp, " if (mask == 0)\n return (start);\n\n");
594 #if 0
595 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
596 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
597 fprintf(fp_cpp, " tty->print(\"# functional_unit_latency: mask == 0x%%x\\n\", mask);\n");
598 fprintf(fp_cpp, " }\n");
599 fprintf(fp_cpp, "#endif\n\n");
600 #endif
601 fprintf(fp_cpp, " for (uint i = 0; i < pred->resourceUseCount(); i++) {\n");
602 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred->resourceUseElement(i);\n");
603 fprintf(fp_cpp, " if (predUse->multiple())\n");
604 fprintf(fp_cpp, " continue;\n\n");
605 fprintf(fp_cpp, " for (uint j = 0; j < resourceUseCount(); j++) {\n");
606 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = resourceUseElement(j);\n");
607 fprintf(fp_cpp, " if (currUse->multiple())\n");
608 fprintf(fp_cpp, " continue;\n\n");
609 fprintf(fp_cpp, " if (predUse->used() & currUse->used()) {\n");
610 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->mask();\n");
611 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->mask();\n\n");
612 fprintf(fp_cpp, " for ( y <<= start; x.overlaps(y); start++ )\n");
613 fprintf(fp_cpp, " y <<= 1;\n");
614 fprintf(fp_cpp, " }\n");
615 fprintf(fp_cpp, " }\n");
616 fprintf(fp_cpp, " }\n\n");
617 fprintf(fp_cpp, " // There is the potential for overlap\n");
618 fprintf(fp_cpp, " return (start);\n");
619 fprintf(fp_cpp, "}\n\n");
620 fprintf(fp_cpp, "// The following two routines assume that the root Pipeline_Use entity\n");
621 fprintf(fp_cpp, "// consists of exactly 1 element for each functional unit\n");
622 fprintf(fp_cpp, "// start is relative to the current cycle; used for latency-based info\n");
623 fprintf(fp_cpp, "uint Pipeline_Use::full_latency(uint delay, const Pipeline_Use &pred) const {\n");
624 fprintf(fp_cpp, " for (uint i = 0; i < pred._count; i++) {\n");
625 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred.element(i);\n");
626 fprintf(fp_cpp, " if (predUse->_multiple) {\n");
627 fprintf(fp_cpp, " uint min_delay = %d;\n",
628 _pipeline->_maxcycleused+1);
629 fprintf(fp_cpp, " // Multiple possible functional units, choose first unused one\n");
630 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
631 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = element(j);\n");
632 fprintf(fp_cpp, " uint curr_delay = delay;\n");
633 fprintf(fp_cpp, " if (predUse->_used & currUse->_used) {\n");
634 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
635 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
636 fprintf(fp_cpp, " for ( y <<= curr_delay; x.overlaps(y); curr_delay++ )\n");
637 fprintf(fp_cpp, " y <<= 1;\n");
638 fprintf(fp_cpp, " }\n");
639 fprintf(fp_cpp, " if (min_delay > curr_delay)\n min_delay = curr_delay;\n");
640 fprintf(fp_cpp, " }\n");
641 fprintf(fp_cpp, " if (delay < min_delay)\n delay = min_delay;\n");
642 fprintf(fp_cpp, " }\n");
643 fprintf(fp_cpp, " else {\n");
644 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
645 fprintf(fp_cpp, " const Pipeline_Use_Element *currUse = element(j);\n");
646 fprintf(fp_cpp, " if (predUse->_used & currUse->_used) {\n");
647 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask x = predUse->_mask;\n");
648 fprintf(fp_cpp, " Pipeline_Use_Cycle_Mask y = currUse->_mask;\n\n");
649 fprintf(fp_cpp, " for ( y <<= delay; x.overlaps(y); delay++ )\n");
650 fprintf(fp_cpp, " y <<= 1;\n");
651 fprintf(fp_cpp, " }\n");
652 fprintf(fp_cpp, " }\n");
653 fprintf(fp_cpp, " }\n");
654 fprintf(fp_cpp, " }\n\n");
655 fprintf(fp_cpp, " return (delay);\n");
656 fprintf(fp_cpp, "}\n\n");
657 fprintf(fp_cpp, "void Pipeline_Use::add_usage(const Pipeline_Use &pred) {\n");
658 fprintf(fp_cpp, " for (uint i = 0; i < pred._count; i++) {\n");
659 fprintf(fp_cpp, " const Pipeline_Use_Element *predUse = pred.element(i);\n");
660 fprintf(fp_cpp, " if (predUse->_multiple) {\n");
661 fprintf(fp_cpp, " // Multiple possible functional units, choose first unused one\n");
662 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
663 fprintf(fp_cpp, " Pipeline_Use_Element *currUse = element(j);\n");
664 fprintf(fp_cpp, " if ( !predUse->_mask.overlaps(currUse->_mask) ) {\n");
665 fprintf(fp_cpp, " currUse->_used |= (1 << j);\n");
666 fprintf(fp_cpp, " _resources_used |= (1 << j);\n");
667 fprintf(fp_cpp, " currUse->_mask.Or(predUse->_mask);\n");
668 fprintf(fp_cpp, " break;\n");
669 fprintf(fp_cpp, " }\n");
670 fprintf(fp_cpp, " }\n");
671 fprintf(fp_cpp, " }\n");
672 fprintf(fp_cpp, " else {\n");
673 fprintf(fp_cpp, " for (uint j = predUse->_lb; j <= predUse->_ub; j++) {\n");
674 fprintf(fp_cpp, " Pipeline_Use_Element *currUse = element(j);\n");
675 fprintf(fp_cpp, " currUse->_used |= (1 << j);\n");
676 fprintf(fp_cpp, " _resources_used |= (1 << j);\n");
677 fprintf(fp_cpp, " currUse->_mask.Or(predUse->_mask);\n");
678 fprintf(fp_cpp, " }\n");
679 fprintf(fp_cpp, " }\n");
680 fprintf(fp_cpp, " }\n");
681 fprintf(fp_cpp, "}\n\n");
683 fprintf(fp_cpp, "uint Pipeline::operand_latency(uint opnd, const Pipeline *pred) const {\n");
684 fprintf(fp_cpp, " int const default_latency = 1;\n");
685 fprintf(fp_cpp, "\n");
686 #if 0
687 fprintf(fp_cpp, "#ifndef PRODUCT\n");
688 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
689 fprintf(fp_cpp, " tty->print(\"# operand_latency(%%d), _read_stage_count = %%d\\n\", opnd, _read_stage_count);\n");
690 fprintf(fp_cpp, " }\n");
691 fprintf(fp_cpp, "#endif\n\n");
692 #endif
693 fprintf(fp_cpp, " assert(this, \"NULL pipeline info\");\n");
694 fprintf(fp_cpp, " assert(pred, \"NULL predecessor pipline info\");\n\n");
695 fprintf(fp_cpp, " if (pred->hasFixedLatency())\n return (pred->fixedLatency());\n\n");
696 fprintf(fp_cpp, " // If this is not an operand, then assume a dependence with 0 latency\n");
697 fprintf(fp_cpp, " if (opnd > _read_stage_count)\n return (0);\n\n");
698 fprintf(fp_cpp, " uint writeStage = pred->_write_stage;\n");
699 fprintf(fp_cpp, " uint readStage = _read_stages[opnd-1];\n");
700 #if 0
701 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
702 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
703 fprintf(fp_cpp, " tty->print(\"# operand_latency: writeStage=%%s readStage=%%s, opnd=%%d\\n\", stageName(writeStage), stageName(readStage), opnd);\n");
704 fprintf(fp_cpp, " }\n");
705 fprintf(fp_cpp, "#endif\n\n");
706 #endif
707 fprintf(fp_cpp, "\n");
708 fprintf(fp_cpp, " if (writeStage == stage_undefined || readStage == stage_undefined)\n");
709 fprintf(fp_cpp, " return (default_latency);\n");
710 fprintf(fp_cpp, "\n");
711 fprintf(fp_cpp, " int delta = writeStage - readStage;\n");
712 fprintf(fp_cpp, " if (delta < 0) delta = 0;\n\n");
713 #if 0
714 fprintf(fp_cpp, "\n#ifndef PRODUCT\n");
715 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
716 fprintf(fp_cpp, " tty->print(\"# operand_latency: delta=%%d\\n\", delta);\n");
717 fprintf(fp_cpp, " }\n");
718 fprintf(fp_cpp, "#endif\n\n");
719 #endif
720 fprintf(fp_cpp, " return (delta);\n");
721 fprintf(fp_cpp, "}\n\n");
723 if (!_pipeline)
724 /* Do Nothing */;
726 else if (_pipeline->_maxcycleused <=
727 #ifdef SPARC
728 64
729 #else
730 32
731 #endif
732 ) {
733 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
734 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(in1._mask & in2._mask);\n");
735 fprintf(fp_cpp, "}\n\n");
736 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
737 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(in1._mask | in2._mask);\n");
738 fprintf(fp_cpp, "}\n\n");
739 }
740 else {
741 uint l;
742 uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
743 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator&(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
744 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(");
745 for (l = 1; l <= masklen; l++)
746 fprintf(fp_cpp, "in1._mask%d & in2._mask%d%s\n", l, l, l < masklen ? ", " : "");
747 fprintf(fp_cpp, ");\n");
748 fprintf(fp_cpp, "}\n\n");
749 fprintf(fp_cpp, "Pipeline_Use_Cycle_Mask operator|(const Pipeline_Use_Cycle_Mask &in1, const Pipeline_Use_Cycle_Mask &in2) {\n");
750 fprintf(fp_cpp, " return Pipeline_Use_Cycle_Mask(");
751 for (l = 1; l <= masklen; l++)
752 fprintf(fp_cpp, "in1._mask%d | in2._mask%d%s", l, l, l < masklen ? ", " : "");
753 fprintf(fp_cpp, ");\n");
754 fprintf(fp_cpp, "}\n\n");
755 fprintf(fp_cpp, "void Pipeline_Use_Cycle_Mask::Or(const Pipeline_Use_Cycle_Mask &in2) {\n ");
756 for (l = 1; l <= masklen; l++)
757 fprintf(fp_cpp, " _mask%d |= in2._mask%d;", l, l);
758 fprintf(fp_cpp, "\n}\n\n");
759 }
761 /* Get the length of all the resource names */
762 for (_pipeline->_reslist.reset(), resourcenamelen = 0;
763 (resourcename = _pipeline->_reslist.iter()) != NULL;
764 resourcenamelen += (int)strlen(resourcename));
766 // Create the pipeline class description
768 fprintf(fp_cpp, "static const Pipeline pipeline_class_Zero_Instructions(0, 0, true, 0, 0, false, false, false, false, NULL, NULL, NULL, Pipeline_Use(0, 0, 0, NULL));\n\n");
769 fprintf(fp_cpp, "static const Pipeline pipeline_class_Unknown_Instructions(0, 0, true, 0, 0, false, true, true, false, NULL, NULL, NULL, Pipeline_Use(0, 0, 0, NULL));\n\n");
771 fprintf(fp_cpp, "const Pipeline_Use_Element Pipeline_Use::elaborated_elements[%d] = {\n", _pipeline->_rescount);
772 for (int i1 = 0; i1 < _pipeline->_rescount; i1++) {
773 fprintf(fp_cpp, " Pipeline_Use_Element(0, %d, %d, false, Pipeline_Use_Cycle_Mask(", i1, i1);
774 uint masklen = (_pipeline->_maxcycleused + 31) >> 5;
775 for (int i2 = masklen-1; i2 >= 0; i2--)
776 fprintf(fp_cpp, "0%s", i2 > 0 ? ", " : "");
777 fprintf(fp_cpp, "))%s\n", i1 < (_pipeline->_rescount-1) ? "," : "");
778 }
779 fprintf(fp_cpp, "};\n\n");
781 fprintf(fp_cpp, "const Pipeline_Use Pipeline_Use::elaborated_use(0, 0, %d, (Pipeline_Use_Element *)&elaborated_elements[0]);\n\n",
782 _pipeline->_rescount);
784 for (_pipeline->_classlist.reset(); (classname = _pipeline->_classlist.iter()) != NULL; ) {
785 fprintf(fp_cpp, "\n");
786 fprintf(fp_cpp, "// Pipeline Class \"%s\"\n", classname);
787 PipeClassForm *pipeclass = _pipeline->_classdict[classname]->is_pipeclass();
788 int maxWriteStage = -1;
789 int maxMoreInstrs = 0;
790 int paramcount = 0;
791 int i = 0;
792 const char *paramname;
793 int resource_count = (_pipeline->_rescount + 3) >> 2;
795 // Scan the operands, looking for last output stage and number of inputs
796 for (pipeclass->_parameters.reset(); (paramname = pipeclass->_parameters.iter()) != NULL; ) {
797 const PipeClassOperandForm *pipeopnd =
798 (const PipeClassOperandForm *)pipeclass->_localUsage[paramname];
799 if (pipeopnd) {
800 if (pipeopnd->_iswrite) {
801 int stagenum = _pipeline->_stages.index(pipeopnd->_stage);
802 int moreinsts = pipeopnd->_more_instrs;
803 if ((maxWriteStage+maxMoreInstrs) < (stagenum+moreinsts)) {
804 maxWriteStage = stagenum;
805 maxMoreInstrs = moreinsts;
806 }
807 }
808 }
810 if (i++ > 0 || (pipeopnd && !pipeopnd->isWrite()))
811 paramcount++;
812 }
814 // Create the list of stages for the operands that are read
815 // Note that we will build a NameList to reduce the number of copies
817 int pipeline_reads_index = pipeline_reads_initializer(fp_cpp, pipeline_reads, pipeclass);
819 int pipeline_res_stages_index = pipeline_res_stages_initializer(
820 fp_cpp, _pipeline, pipeline_res_stages, pipeclass);
822 int pipeline_res_cycles_index = pipeline_res_cycles_initializer(
823 fp_cpp, _pipeline, pipeline_res_cycles, pipeclass);
825 int pipeline_res_mask_index = pipeline_res_mask_initializer(
826 fp_cpp, _pipeline, pipeline_res_masks, pipeline_res_args, pipeclass);
828 #if 0
829 // Process the Resources
830 const PipeClassResourceForm *piperesource;
832 unsigned resources_used = 0;
833 unsigned exclusive_resources_used = 0;
834 unsigned resource_groups = 0;
835 for (pipeclass->_resUsage.reset();
836 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL; ) {
837 int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
838 if (used_mask)
839 resource_groups++;
840 resources_used |= used_mask;
841 if ((used_mask & (used_mask-1)) == 0)
842 exclusive_resources_used |= used_mask;
843 }
845 if (resource_groups > 0) {
846 fprintf(fp_cpp, "static const uint pipeline_res_or_masks_%03d[%d] = {",
847 pipeclass->_num, resource_groups);
848 for (pipeclass->_resUsage.reset(), i = 1;
849 (piperesource = (const PipeClassResourceForm *)pipeclass->_resUsage.iter()) != NULL;
850 i++ ) {
851 int used_mask = _pipeline->_resdict[piperesource->_resource]->is_resource()->mask();
852 if (used_mask) {
853 fprintf(fp_cpp, " 0x%0*x%c", resource_count, used_mask, i < (int)resource_groups ? ',' : ' ');
854 }
855 }
856 fprintf(fp_cpp, "};\n\n");
857 }
858 #endif
860 // Create the pipeline class description
861 fprintf(fp_cpp, "static const Pipeline pipeline_class_%03d(",
862 pipeclass->_num);
863 if (maxWriteStage < 0)
864 fprintf(fp_cpp, "(uint)stage_undefined");
865 else if (maxMoreInstrs == 0)
866 fprintf(fp_cpp, "(uint)stage_%s", _pipeline->_stages.name(maxWriteStage));
867 else
868 fprintf(fp_cpp, "((uint)stage_%s)+%d", _pipeline->_stages.name(maxWriteStage), maxMoreInstrs);
869 fprintf(fp_cpp, ", %d, %s, %d, %d, %s, %s, %s, %s,\n",
870 paramcount,
871 pipeclass->hasFixedLatency() ? "true" : "false",
872 pipeclass->fixedLatency(),
873 pipeclass->InstructionCount(),
874 pipeclass->hasBranchDelay() ? "true" : "false",
875 pipeclass->hasMultipleBundles() ? "true" : "false",
876 pipeclass->forceSerialization() ? "true" : "false",
877 pipeclass->mayHaveNoCode() ? "true" : "false" );
878 if (paramcount > 0) {
879 fprintf(fp_cpp, "\n (enum machPipelineStages * const) pipeline_reads_%03d,\n ",
880 pipeline_reads_index+1);
881 }
882 else
883 fprintf(fp_cpp, " NULL,");
884 fprintf(fp_cpp, " (enum machPipelineStages * const) pipeline_res_stages_%03d,\n",
885 pipeline_res_stages_index+1);
886 fprintf(fp_cpp, " (uint * const) pipeline_res_cycles_%03d,\n",
887 pipeline_res_cycles_index+1);
888 fprintf(fp_cpp, " Pipeline_Use(%s, (Pipeline_Use_Element *)",
889 pipeline_res_args.name(pipeline_res_mask_index));
890 if (strlen(pipeline_res_masks.name(pipeline_res_mask_index)) > 0)
891 fprintf(fp_cpp, "&pipeline_res_mask_%03d[0]",
892 pipeline_res_mask_index+1);
893 else
894 fprintf(fp_cpp, "NULL");
895 fprintf(fp_cpp, "));\n");
896 }
898 // Generate the Node::latency method if _pipeline defined
899 fprintf(fp_cpp, "\n");
900 fprintf(fp_cpp, "//------------------Inter-Instruction Latency--------------------------------\n");
901 fprintf(fp_cpp, "uint Node::latency(uint i) {\n");
902 if (_pipeline) {
903 #if 0
904 fprintf(fp_cpp, "#ifndef PRODUCT\n");
905 fprintf(fp_cpp, " if (TraceOptoOutput) {\n");
906 fprintf(fp_cpp, " tty->print(\"# %%4d->latency(%%d)\\n\", _idx, i);\n");
907 fprintf(fp_cpp, " }\n");
908 fprintf(fp_cpp, "#endif\n");
909 #endif
910 fprintf(fp_cpp, " uint j;\n");
911 fprintf(fp_cpp, " // verify in legal range for inputs\n");
912 fprintf(fp_cpp, " assert(i < len(), \"index not in range\");\n\n");
913 fprintf(fp_cpp, " // verify input is not null\n");
914 fprintf(fp_cpp, " Node *pred = in(i);\n");
915 fprintf(fp_cpp, " if (!pred)\n return %d;\n\n",
916 non_operand_latency);
917 fprintf(fp_cpp, " if (pred->is_Proj())\n pred = pred->in(0);\n\n");
918 fprintf(fp_cpp, " // if either node does not have pipeline info, use default\n");
919 fprintf(fp_cpp, " const Pipeline *predpipe = pred->pipeline();\n");
920 fprintf(fp_cpp, " assert(predpipe, \"no predecessor pipeline info\");\n\n");
921 fprintf(fp_cpp, " if (predpipe->hasFixedLatency())\n return predpipe->fixedLatency();\n\n");
922 fprintf(fp_cpp, " const Pipeline *currpipe = pipeline();\n");
923 fprintf(fp_cpp, " assert(currpipe, \"no pipeline info\");\n\n");
924 fprintf(fp_cpp, " if (!is_Mach())\n return %d;\n\n",
925 node_latency);
926 fprintf(fp_cpp, " const MachNode *m = as_Mach();\n");
927 fprintf(fp_cpp, " j = m->oper_input_base();\n");
928 fprintf(fp_cpp, " if (i < j)\n return currpipe->functional_unit_latency(%d, predpipe);\n\n",
929 non_operand_latency);
930 fprintf(fp_cpp, " // determine which operand this is in\n");
931 fprintf(fp_cpp, " uint n = m->num_opnds();\n");
932 fprintf(fp_cpp, " int delta = %d;\n\n",
933 non_operand_latency);
934 fprintf(fp_cpp, " uint k;\n");
935 fprintf(fp_cpp, " for (k = 1; k < n; k++) {\n");
936 fprintf(fp_cpp, " j += m->_opnds[k]->num_edges();\n");
937 fprintf(fp_cpp, " if (i < j)\n");
938 fprintf(fp_cpp, " break;\n");
939 fprintf(fp_cpp, " }\n");
940 fprintf(fp_cpp, " if (k < n)\n");
941 fprintf(fp_cpp, " delta = currpipe->operand_latency(k,predpipe);\n\n");
942 fprintf(fp_cpp, " return currpipe->functional_unit_latency(delta, predpipe);\n");
943 }
944 else {
945 fprintf(fp_cpp, " // assert(false, \"pipeline functionality is not defined\");\n");
946 fprintf(fp_cpp, " return %d;\n",
947 non_operand_latency);
948 }
949 fprintf(fp_cpp, "}\n\n");
951 // Output the list of nop nodes
952 fprintf(fp_cpp, "// Descriptions for emitting different functional unit nops\n");
953 const char *nop;
954 int nopcnt = 0;
955 for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; nopcnt++ );
957 fprintf(fp_cpp, "void Bundle::initialize_nops(MachNode * nop_list[%d], Compile *C) {\n", nopcnt);
958 int i = 0;
959 for ( _pipeline->_noplist.reset(); (nop = _pipeline->_noplist.iter()) != NULL; i++ ) {
960 fprintf(fp_cpp, " nop_list[%d] = (MachNode *) new (C) %sNode();\n", i, nop);
961 }
962 fprintf(fp_cpp, "};\n\n");
963 fprintf(fp_cpp, "#ifndef PRODUCT\n");
964 fprintf(fp_cpp, "void Bundle::dump(outputStream *st) const {\n");
965 fprintf(fp_cpp, " static const char * bundle_flags[] = {\n");
966 fprintf(fp_cpp, " \"\",\n");
967 fprintf(fp_cpp, " \"use nop delay\",\n");
968 fprintf(fp_cpp, " \"use unconditional delay\",\n");
969 fprintf(fp_cpp, " \"use conditional delay\",\n");
970 fprintf(fp_cpp, " \"used in conditional delay\",\n");
971 fprintf(fp_cpp, " \"used in unconditional delay\",\n");
972 fprintf(fp_cpp, " \"used in all conditional delays\",\n");
973 fprintf(fp_cpp, " };\n\n");
975 fprintf(fp_cpp, " static const char *resource_names[%d] = {", _pipeline->_rescount);
976 for (i = 0; i < _pipeline->_rescount; i++)
977 fprintf(fp_cpp, " \"%s\"%c", _pipeline->_reslist.name(i), i < _pipeline->_rescount-1 ? ',' : ' ');
978 fprintf(fp_cpp, "};\n\n");
980 // See if the same string is in the table
981 fprintf(fp_cpp, " bool needs_comma = false;\n\n");
982 fprintf(fp_cpp, " if (_flags) {\n");
983 fprintf(fp_cpp, " st->print(\"%%s\", bundle_flags[_flags]);\n");
984 fprintf(fp_cpp, " needs_comma = true;\n");
985 fprintf(fp_cpp, " };\n");
986 fprintf(fp_cpp, " if (instr_count()) {\n");
987 fprintf(fp_cpp, " st->print(\"%%s%%d instr%%s\", needs_comma ? \", \" : \"\", instr_count(), instr_count() != 1 ? \"s\" : \"\");\n");
988 fprintf(fp_cpp, " needs_comma = true;\n");
989 fprintf(fp_cpp, " };\n");
990 fprintf(fp_cpp, " uint r = resources_used();\n");
991 fprintf(fp_cpp, " if (r) {\n");
992 fprintf(fp_cpp, " st->print(\"%%sresource%%s:\", needs_comma ? \", \" : \"\", (r & (r-1)) != 0 ? \"s\" : \"\");\n");
993 fprintf(fp_cpp, " for (uint i = 0; i < %d; i++)\n", _pipeline->_rescount);
994 fprintf(fp_cpp, " if ((r & (1 << i)) != 0)\n");
995 fprintf(fp_cpp, " st->print(\" %%s\", resource_names[i]);\n");
996 fprintf(fp_cpp, " needs_comma = true;\n");
997 fprintf(fp_cpp, " };\n");
998 fprintf(fp_cpp, " st->print(\"\\n\");\n");
999 fprintf(fp_cpp, "}\n");
1000 fprintf(fp_cpp, "#endif\n");
1001 }
1003 // ---------------------------------------------------------------------------
1004 //------------------------------Utilities to build Instruction Classes--------
1005 // ---------------------------------------------------------------------------
1007 static void defineOut_RegMask(FILE *fp, const char *node, const char *regMask) {
1008 fprintf(fp,"const RegMask &%sNode::out_RegMask() const { return (%s); }\n",
1009 node, regMask);
1010 }
1012 static void print_block_index(FILE *fp, int inst_position) {
1013 assert( inst_position >= 0, "Instruction number less than zero");
1014 fprintf(fp, "block_index");
1015 if( inst_position != 0 ) {
1016 fprintf(fp, " - %d", inst_position);
1017 }
1018 }
1020 // Scan the peepmatch and output a test for each instruction
1021 static void check_peepmatch_instruction_sequence(FILE *fp, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1022 int parent = -1;
1023 int inst_position = 0;
1024 const char* inst_name = NULL;
1025 int input = 0;
1026 fprintf(fp, " // Check instruction sub-tree\n");
1027 pmatch->reset();
1028 for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1029 inst_name != NULL;
1030 pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1031 // If this is not a placeholder
1032 if( ! pmatch->is_placeholder() ) {
1033 // Define temporaries 'inst#', based on parent and parent's input index
1034 if( parent != -1 ) { // root was initialized
1035 fprintf(fp, " // Identify previous instruction if inside this block\n");
1036 fprintf(fp, " if( ");
1037 print_block_index(fp, inst_position);
1038 fprintf(fp, " > 0 ) {\n Node *n = block->get_node(");
1039 print_block_index(fp, inst_position);
1040 fprintf(fp, ");\n inst%d = (n->is_Mach()) ? ", inst_position);
1041 fprintf(fp, "n->as_Mach() : NULL;\n }\n");
1042 }
1044 // When not the root
1045 // Test we have the correct instruction by comparing the rule.
1046 if( parent != -1 ) {
1047 fprintf(fp, " matches = matches && (inst%d != NULL) && (inst%d->rule() == %s_rule);\n",
1048 inst_position, inst_position, inst_name);
1049 }
1050 } else {
1051 // Check that user did not try to constrain a placeholder
1052 assert( ! pconstraint->constrains_instruction(inst_position),
1053 "fatal(): Can not constrain a placeholder instruction");
1054 }
1055 }
1056 }
1058 // Build mapping for register indices, num_edges to input
1059 static void build_instruction_index_mapping( FILE *fp, FormDict &globals, PeepMatch *pmatch ) {
1060 int parent = -1;
1061 int inst_position = 0;
1062 const char* inst_name = NULL;
1063 int input = 0;
1064 fprintf(fp, " // Build map to register info\n");
1065 pmatch->reset();
1066 for( pmatch->next_instruction( parent, inst_position, inst_name, input );
1067 inst_name != NULL;
1068 pmatch->next_instruction( parent, inst_position, inst_name, input ) ) {
1069 // If this is not a placeholder
1070 if( ! pmatch->is_placeholder() ) {
1071 // Define temporaries 'inst#', based on self's inst_position
1072 InstructForm *inst = globals[inst_name]->is_instruction();
1073 if( inst != NULL ) {
1074 char inst_prefix[] = "instXXXX_";
1075 sprintf(inst_prefix, "inst%d_", inst_position);
1076 char receiver[] = "instXXXX->";
1077 sprintf(receiver, "inst%d->", inst_position);
1078 inst->index_temps( fp, globals, inst_prefix, receiver );
1079 }
1080 }
1081 }
1082 }
1084 // Generate tests for the constraints
1085 static void check_peepconstraints(FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint) {
1086 fprintf(fp, "\n");
1087 fprintf(fp, " // Check constraints on sub-tree-leaves\n");
1089 // Build mapping from num_edges to local variables
1090 build_instruction_index_mapping( fp, globals, pmatch );
1092 // Build constraint tests
1093 if( pconstraint != NULL ) {
1094 fprintf(fp, " matches = matches &&");
1095 bool first_constraint = true;
1096 while( pconstraint != NULL ) {
1097 // indentation and connecting '&&'
1098 const char *indentation = " ";
1099 fprintf(fp, "\n%s%s", indentation, (!first_constraint ? "&& " : " "));
1101 // Only have '==' relation implemented
1102 if( strcmp(pconstraint->_relation,"==") != 0 ) {
1103 assert( false, "Unimplemented()" );
1104 }
1106 // LEFT
1107 int left_index = pconstraint->_left_inst;
1108 const char *left_op = pconstraint->_left_op;
1109 // Access info on the instructions whose operands are compared
1110 InstructForm *inst_left = globals[pmatch->instruction_name(left_index)]->is_instruction();
1111 assert( inst_left, "Parser should guaranty this is an instruction");
1112 int left_op_base = inst_left->oper_input_base(globals);
1113 // Access info on the operands being compared
1114 int left_op_index = inst_left->operand_position(left_op, Component::USE);
1115 if( left_op_index == -1 ) {
1116 left_op_index = inst_left->operand_position(left_op, Component::DEF);
1117 if( left_op_index == -1 ) {
1118 left_op_index = inst_left->operand_position(left_op, Component::USE_DEF);
1119 }
1120 }
1121 assert( left_op_index != NameList::Not_in_list, "Did not find operand in instruction");
1122 ComponentList components_left = inst_left->_components;
1123 const char *left_comp_type = components_left.at(left_op_index)->_type;
1124 OpClassForm *left_opclass = globals[left_comp_type]->is_opclass();
1125 Form::InterfaceType left_interface_type = left_opclass->interface_type(globals);
1128 // RIGHT
1129 int right_op_index = -1;
1130 int right_index = pconstraint->_right_inst;
1131 const char *right_op = pconstraint->_right_op;
1132 if( right_index != -1 ) { // Match operand
1133 // Access info on the instructions whose operands are compared
1134 InstructForm *inst_right = globals[pmatch->instruction_name(right_index)]->is_instruction();
1135 assert( inst_right, "Parser should guaranty this is an instruction");
1136 int right_op_base = inst_right->oper_input_base(globals);
1137 // Access info on the operands being compared
1138 right_op_index = inst_right->operand_position(right_op, Component::USE);
1139 if( right_op_index == -1 ) {
1140 right_op_index = inst_right->operand_position(right_op, Component::DEF);
1141 if( right_op_index == -1 ) {
1142 right_op_index = inst_right->operand_position(right_op, Component::USE_DEF);
1143 }
1144 }
1145 assert( right_op_index != NameList::Not_in_list, "Did not find operand in instruction");
1146 ComponentList components_right = inst_right->_components;
1147 const char *right_comp_type = components_right.at(right_op_index)->_type;
1148 OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1149 Form::InterfaceType right_interface_type = right_opclass->interface_type(globals);
1150 assert( right_interface_type == left_interface_type, "Both must be same interface");
1152 } else { // Else match register
1153 // assert( false, "should be a register" );
1154 }
1156 //
1157 // Check for equivalence
1158 //
1159 // fprintf(fp, "phase->eqv( ");
1160 // fprintf(fp, "inst%d->in(%d+%d) /* %s */, inst%d->in(%d+%d) /* %s */",
1161 // left_index, left_op_base, left_op_index, left_op,
1162 // right_index, right_op_base, right_op_index, right_op );
1163 // fprintf(fp, ")");
1164 //
1165 switch( left_interface_type ) {
1166 case Form::register_interface: {
1167 // Check that they are allocated to the same register
1168 // Need parameter for index position if not result operand
1169 char left_reg_index[] = ",instXXXX_idxXXXX";
1170 if( left_op_index != 0 ) {
1171 assert( (left_index <= 9999) && (left_op_index <= 9999), "exceed string size");
1172 // Must have index into operands
1173 sprintf(left_reg_index,",inst%d_idx%d", (int)left_index, left_op_index);
1174 } else {
1175 strcpy(left_reg_index, "");
1176 }
1177 fprintf(fp, "(inst%d->_opnds[%d]->reg(ra_,inst%d%s) /* %d.%s */",
1178 left_index, left_op_index, left_index, left_reg_index, left_index, left_op );
1179 fprintf(fp, " == ");
1181 if( right_index != -1 ) {
1182 char right_reg_index[18] = ",instXXXX_idxXXXX";
1183 if( right_op_index != 0 ) {
1184 assert( (right_index <= 9999) && (right_op_index <= 9999), "exceed string size");
1185 // Must have index into operands
1186 sprintf(right_reg_index,",inst%d_idx%d", (int)right_index, right_op_index);
1187 } else {
1188 strcpy(right_reg_index, "");
1189 }
1190 fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->reg(ra_,inst%d%s)",
1191 right_index, right_op, right_index, right_op_index, right_index, right_reg_index );
1192 } else {
1193 fprintf(fp, "%s_enc", right_op );
1194 }
1195 fprintf(fp,")");
1196 break;
1197 }
1198 case Form::constant_interface: {
1199 // Compare the '->constant()' values
1200 fprintf(fp, "(inst%d->_opnds[%d]->constant() /* %d.%s */",
1201 left_index, left_op_index, left_index, left_op );
1202 fprintf(fp, " == ");
1203 fprintf(fp, "/* %d.%s */ inst%d->_opnds[%d]->constant())",
1204 right_index, right_op, right_index, right_op_index );
1205 break;
1206 }
1207 case Form::memory_interface: {
1208 // Compare 'base', 'index', 'scale', and 'disp'
1209 // base
1210 fprintf(fp, "( \n");
1211 fprintf(fp, " (inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d) /* %d.%s$$base */",
1212 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1213 fprintf(fp, " == ");
1214 fprintf(fp, "/* %d.%s$$base */ inst%d->_opnds[%d]->base(ra_,inst%d,inst%d_idx%d)) &&\n",
1215 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1216 // index
1217 fprintf(fp, " (inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d) /* %d.%s$$index */",
1218 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1219 fprintf(fp, " == ");
1220 fprintf(fp, "/* %d.%s$$index */ inst%d->_opnds[%d]->index(ra_,inst%d,inst%d_idx%d)) &&\n",
1221 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1222 // scale
1223 fprintf(fp, " (inst%d->_opnds[%d]->scale() /* %d.%s$$scale */",
1224 left_index, left_op_index, left_index, left_op );
1225 fprintf(fp, " == ");
1226 fprintf(fp, "/* %d.%s$$scale */ inst%d->_opnds[%d]->scale()) &&\n",
1227 right_index, right_op, right_index, right_op_index );
1228 // disp
1229 fprintf(fp, " (inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d) /* %d.%s$$disp */",
1230 left_index, left_op_index, left_index, left_index, left_op_index, left_index, left_op );
1231 fprintf(fp, " == ");
1232 fprintf(fp, "/* %d.%s$$disp */ inst%d->_opnds[%d]->disp(ra_,inst%d,inst%d_idx%d))\n",
1233 right_index, right_op, right_index, right_op_index, right_index, right_index, right_op_index );
1234 fprintf(fp, ") \n");
1235 break;
1236 }
1237 case Form::conditional_interface: {
1238 // Compare the condition code being tested
1239 assert( false, "Unimplemented()" );
1240 break;
1241 }
1242 default: {
1243 assert( false, "ShouldNotReachHere()" );
1244 break;
1245 }
1246 }
1248 // Advance to next constraint
1249 pconstraint = pconstraint->next();
1250 first_constraint = false;
1251 }
1253 fprintf(fp, ";\n");
1254 }
1255 }
1257 // // EXPERIMENTAL -- TEMPORARY code
1258 // static Form::DataType get_operand_type(FormDict &globals, InstructForm *instr, const char *op_name ) {
1259 // int op_index = instr->operand_position(op_name, Component::USE);
1260 // if( op_index == -1 ) {
1261 // op_index = instr->operand_position(op_name, Component::DEF);
1262 // if( op_index == -1 ) {
1263 // op_index = instr->operand_position(op_name, Component::USE_DEF);
1264 // }
1265 // }
1266 // assert( op_index != NameList::Not_in_list, "Did not find operand in instruction");
1267 //
1268 // ComponentList components_right = instr->_components;
1269 // char *right_comp_type = components_right.at(op_index)->_type;
1270 // OpClassForm *right_opclass = globals[right_comp_type]->is_opclass();
1271 // Form::InterfaceType right_interface_type = right_opclass->interface_type(globals);
1272 //
1273 // return;
1274 // }
1276 // Construct the new sub-tree
1277 static void generate_peepreplace( FILE *fp, FormDict &globals, PeepMatch *pmatch, PeepConstraint *pconstraint, PeepReplace *preplace, int max_position ) {
1278 fprintf(fp, " // IF instructions and constraints matched\n");
1279 fprintf(fp, " if( matches ) {\n");
1280 fprintf(fp, " // generate the new sub-tree\n");
1281 fprintf(fp, " assert( true, \"Debug stopping point\");\n");
1282 if( preplace != NULL ) {
1283 // Get the root of the new sub-tree
1284 const char *root_inst = NULL;
1285 preplace->next_instruction(root_inst);
1286 InstructForm *root_form = globals[root_inst]->is_instruction();
1287 assert( root_form != NULL, "Replacement instruction was not previously defined");
1288 fprintf(fp, " %sNode *root = new (C) %sNode();\n", root_inst, root_inst);
1290 int inst_num;
1291 const char *op_name;
1292 int opnds_index = 0; // define result operand
1293 // Then install the use-operands for the new sub-tree
1294 // preplace->reset(); // reset breaks iteration
1295 for( preplace->next_operand( inst_num, op_name );
1296 op_name != NULL;
1297 preplace->next_operand( inst_num, op_name ) ) {
1298 InstructForm *inst_form;
1299 inst_form = globals[pmatch->instruction_name(inst_num)]->is_instruction();
1300 assert( inst_form, "Parser should guaranty this is an instruction");
1301 int inst_op_num = inst_form->operand_position(op_name, Component::USE);
1302 if( inst_op_num == NameList::Not_in_list )
1303 inst_op_num = inst_form->operand_position(op_name, Component::USE_DEF);
1304 assert( inst_op_num != NameList::Not_in_list, "Did not find operand as USE");
1305 // find the name of the OperandForm from the local name
1306 const Form *form = inst_form->_localNames[op_name];
1307 OperandForm *op_form = form->is_operand();
1308 if( opnds_index == 0 ) {
1309 // Initial setup of new instruction
1310 fprintf(fp, " // ----- Initial setup -----\n");
1311 //
1312 // Add control edge for this node
1313 fprintf(fp, " root->add_req(_in[0]); // control edge\n");
1314 // Add unmatched edges from root of match tree
1315 int op_base = root_form->oper_input_base(globals);
1316 for( int unmatched_edge = 1; unmatched_edge < op_base; ++unmatched_edge ) {
1317 fprintf(fp, " root->add_req(inst%d->in(%d)); // unmatched ideal edge\n",
1318 inst_num, unmatched_edge);
1319 }
1320 // If new instruction captures bottom type
1321 if( root_form->captures_bottom_type(globals) ) {
1322 // Get bottom type from instruction whose result we are replacing
1323 fprintf(fp, " root->_bottom_type = inst%d->bottom_type();\n", inst_num);
1324 }
1325 // Define result register and result operand
1326 fprintf(fp, " ra_->add_reference(root, inst%d);\n", inst_num);
1327 fprintf(fp, " ra_->set_oop (root, ra_->is_oop(inst%d));\n", inst_num);
1328 fprintf(fp, " ra_->set_pair(root->_idx, ra_->get_reg_second(inst%d), ra_->get_reg_first(inst%d));\n", inst_num, inst_num);
1329 fprintf(fp, " root->_opnds[0] = inst%d->_opnds[0]->clone(C); // result\n", inst_num);
1330 fprintf(fp, " // ----- Done with initial setup -----\n");
1331 } else {
1332 if( (op_form == NULL) || (op_form->is_base_constant(globals) == Form::none) ) {
1333 // Do not have ideal edges for constants after matching
1334 fprintf(fp, " for( unsigned x%d = inst%d_idx%d; x%d < inst%d_idx%d; x%d++ )\n",
1335 inst_op_num, inst_num, inst_op_num,
1336 inst_op_num, inst_num, inst_op_num+1, inst_op_num );
1337 fprintf(fp, " root->add_req( inst%d->in(x%d) );\n",
1338 inst_num, inst_op_num );
1339 } else {
1340 fprintf(fp, " // no ideal edge for constants after matching\n");
1341 }
1342 fprintf(fp, " root->_opnds[%d] = inst%d->_opnds[%d]->clone(C);\n",
1343 opnds_index, inst_num, inst_op_num );
1344 }
1345 ++opnds_index;
1346 }
1347 }else {
1348 // Replacing subtree with empty-tree
1349 assert( false, "ShouldNotReachHere();");
1350 }
1352 // Return the new sub-tree
1353 fprintf(fp, " deleted = %d;\n", max_position+1 /*zero to one based*/);
1354 fprintf(fp, " return root; // return new root;\n");
1355 fprintf(fp, " }\n");
1356 }
1359 // Define the Peephole method for an instruction node
1360 void ArchDesc::definePeephole(FILE *fp, InstructForm *node) {
1361 // Generate Peephole function header
1362 fprintf(fp, "MachNode *%sNode::peephole( Block *block, int block_index, PhaseRegAlloc *ra_, int &deleted, Compile* C ) {\n", node->_ident);
1363 fprintf(fp, " bool matches = true;\n");
1365 // Identify the maximum instruction position,
1366 // generate temporaries that hold current instruction
1367 //
1368 // MachNode *inst0 = NULL;
1369 // ...
1370 // MachNode *instMAX = NULL;
1371 //
1372 int max_position = 0;
1373 Peephole *peep;
1374 for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1375 PeepMatch *pmatch = peep->match();
1376 assert( pmatch != NULL, "fatal(), missing peepmatch rule");
1377 if( max_position < pmatch->max_position() ) max_position = pmatch->max_position();
1378 }
1379 for( int i = 0; i <= max_position; ++i ) {
1380 if( i == 0 ) {
1381 fprintf(fp, " MachNode *inst0 = this;\n");
1382 } else {
1383 fprintf(fp, " MachNode *inst%d = NULL;\n", i);
1384 }
1385 }
1387 // For each peephole rule in architecture description
1388 // Construct a test for the desired instruction sub-tree
1389 // then check the constraints
1390 // If these match, Generate the new subtree
1391 for( peep = node->peepholes(); peep != NULL; peep = peep->next() ) {
1392 int peephole_number = peep->peephole_number();
1393 PeepMatch *pmatch = peep->match();
1394 PeepConstraint *pconstraint = peep->constraints();
1395 PeepReplace *preplace = peep->replacement();
1397 // Root of this peephole is the current MachNode
1398 assert( true, // %%name?%% strcmp( node->_ident, pmatch->name(0) ) == 0,
1399 "root of PeepMatch does not match instruction");
1401 // Make each peephole rule individually selectable
1402 fprintf(fp, " if( (OptoPeepholeAt == -1) || (OptoPeepholeAt==%d) ) {\n", peephole_number);
1403 fprintf(fp, " matches = true;\n");
1404 // Scan the peepmatch and output a test for each instruction
1405 check_peepmatch_instruction_sequence( fp, pmatch, pconstraint );
1407 // Check constraints and build replacement inside scope
1408 fprintf(fp, " // If instruction subtree matches\n");
1409 fprintf(fp, " if( matches ) {\n");
1411 // Generate tests for the constraints
1412 check_peepconstraints( fp, _globalNames, pmatch, pconstraint );
1414 // Construct the new sub-tree
1415 generate_peepreplace( fp, _globalNames, pmatch, pconstraint, preplace, max_position );
1417 // End of scope for this peephole's constraints
1418 fprintf(fp, " }\n");
1419 // Closing brace '}' to make each peephole rule individually selectable
1420 fprintf(fp, " } // end of peephole rule #%d\n", peephole_number);
1421 fprintf(fp, "\n");
1422 }
1424 fprintf(fp, " return NULL; // No peephole rules matched\n");
1425 fprintf(fp, "}\n");
1426 fprintf(fp, "\n");
1427 }
1429 // Define the Expand method for an instruction node
1430 void ArchDesc::defineExpand(FILE *fp, InstructForm *node) {
1431 unsigned cnt = 0; // Count nodes we have expand into
1432 unsigned i;
1434 // Generate Expand function header
1435 fprintf(fp, "MachNode* %sNode::Expand(State* state, Node_List& proj_list, Node* mem) {\n", node->_ident);
1436 fprintf(fp, " Compile* C = Compile::current();\n");
1437 // Generate expand code
1438 if( node->expands() ) {
1439 const char *opid;
1440 int new_pos, exp_pos;
1441 const char *new_id = NULL;
1442 const Form *frm = NULL;
1443 InstructForm *new_inst = NULL;
1444 OperandForm *new_oper = NULL;
1445 unsigned numo = node->num_opnds() +
1446 node->_exprule->_newopers.count();
1448 // If necessary, generate any operands created in expand rule
1449 if (node->_exprule->_newopers.count()) {
1450 for(node->_exprule->_newopers.reset();
1451 (new_id = node->_exprule->_newopers.iter()) != NULL; cnt++) {
1452 frm = node->_localNames[new_id];
1453 assert(frm, "Invalid entry in new operands list of expand rule");
1454 new_oper = frm->is_operand();
1455 char *tmp = (char *)node->_exprule->_newopconst[new_id];
1456 if (tmp == NULL) {
1457 fprintf(fp," MachOper *op%d = new (C) %sOper();\n",
1458 cnt, new_oper->_ident);
1459 }
1460 else {
1461 fprintf(fp," MachOper *op%d = new (C) %sOper(%s);\n",
1462 cnt, new_oper->_ident, tmp);
1463 }
1464 }
1465 }
1466 cnt = 0;
1467 // Generate the temps to use for DAG building
1468 for(i = 0; i < numo; i++) {
1469 if (i < node->num_opnds()) {
1470 fprintf(fp," MachNode *tmp%d = this;\n", i);
1471 }
1472 else {
1473 fprintf(fp," MachNode *tmp%d = NULL;\n", i);
1474 }
1475 }
1476 // Build mapping from num_edges to local variables
1477 fprintf(fp," unsigned num0 = 0;\n");
1478 for( i = 1; i < node->num_opnds(); i++ ) {
1479 fprintf(fp," unsigned num%d = opnd_array(%d)->num_edges();\n",i,i);
1480 }
1482 // Build a mapping from operand index to input edges
1483 fprintf(fp," unsigned idx0 = oper_input_base();\n");
1485 // The order in which the memory input is added to a node is very
1486 // strange. Store nodes get a memory input before Expand is
1487 // called and other nodes get it afterwards or before depending on
1488 // match order so oper_input_base is wrong during expansion. This
1489 // code adjusts it so that expansion will work correctly.
1490 int has_memory_edge = node->_matrule->needs_ideal_memory_edge(_globalNames);
1491 if (has_memory_edge) {
1492 fprintf(fp," if (mem == (Node*)1) {\n");
1493 fprintf(fp," idx0--; // Adjust base because memory edge hasn't been inserted yet\n");
1494 fprintf(fp," }\n");
1495 }
1497 for( i = 0; i < node->num_opnds(); i++ ) {
1498 fprintf(fp," unsigned idx%d = idx%d + num%d;\n",
1499 i+1,i,i);
1500 }
1502 // Declare variable to hold root of expansion
1503 fprintf(fp," MachNode *result = NULL;\n");
1505 // Iterate over the instructions 'node' expands into
1506 ExpandRule *expand = node->_exprule;
1507 NameAndList *expand_instr = NULL;
1508 for(expand->reset_instructions();
1509 (expand_instr = expand->iter_instructions()) != NULL; cnt++) {
1510 new_id = expand_instr->name();
1512 InstructForm* expand_instruction = (InstructForm*)globalAD->globalNames()[new_id];
1514 if (!expand_instruction) {
1515 globalAD->syntax_err(node->_linenum, "In %s: instruction %s used in expand not declared\n",
1516 node->_ident, new_id);
1517 continue;
1518 }
1520 if (expand_instruction->has_temps()) {
1521 globalAD->syntax_err(node->_linenum, "In %s: expand rules using instructs with TEMPs aren't supported: %s",
1522 node->_ident, new_id);
1523 }
1525 // Build the node for the instruction
1526 fprintf(fp,"\n %sNode *n%d = new (C) %sNode();\n", new_id, cnt, new_id);
1527 // Add control edge for this node
1528 fprintf(fp," n%d->add_req(_in[0]);\n", cnt);
1529 // Build the operand for the value this node defines.
1530 Form *form = (Form*)_globalNames[new_id];
1531 assert( form, "'new_id' must be a defined form name");
1532 // Grab the InstructForm for the new instruction
1533 new_inst = form->is_instruction();
1534 assert( new_inst, "'new_id' must be an instruction name");
1535 if( node->is_ideal_if() && new_inst->is_ideal_if() ) {
1536 fprintf(fp, " ((MachIfNode*)n%d)->_prob = _prob;\n",cnt);
1537 fprintf(fp, " ((MachIfNode*)n%d)->_fcnt = _fcnt;\n",cnt);
1538 }
1540 if( node->is_ideal_fastlock() && new_inst->is_ideal_fastlock() ) {
1541 fprintf(fp, " ((MachFastLockNode*)n%d)->_counters = _counters;\n",cnt);
1542 fprintf(fp, " ((MachFastLockNode*)n%d)->_rtm_counters = _rtm_counters;\n",cnt);
1543 fprintf(fp, " ((MachFastLockNode*)n%d)->_stack_rtm_counters = _stack_rtm_counters;\n",cnt);
1544 }
1546 // Fill in the bottom_type where requested
1547 if (node->captures_bottom_type(_globalNames) &&
1548 new_inst->captures_bottom_type(_globalNames)) {
1549 fprintf(fp, " ((MachTypeNode*)n%d)->_bottom_type = bottom_type();\n", cnt);
1550 }
1552 const char *resultOper = new_inst->reduce_result();
1553 fprintf(fp," n%d->set_opnd_array(0, state->MachOperGenerator( %s, C ));\n",
1554 cnt, machOperEnum(resultOper));
1556 // get the formal operand NameList
1557 NameList *formal_lst = &new_inst->_parameters;
1558 formal_lst->reset();
1560 // Handle any memory operand
1561 int memory_operand = new_inst->memory_operand(_globalNames);
1562 if( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
1563 int node_mem_op = node->memory_operand(_globalNames);
1564 assert( node_mem_op != InstructForm::NO_MEMORY_OPERAND,
1565 "expand rule member needs memory but top-level inst doesn't have any" );
1566 if (has_memory_edge) {
1567 // Copy memory edge
1568 fprintf(fp," if (mem != (Node*)1) {\n");
1569 fprintf(fp," n%d->add_req(_in[1]);\t// Add memory edge\n", cnt);
1570 fprintf(fp," }\n");
1571 }
1572 }
1574 // Iterate over the new instruction's operands
1575 int prev_pos = -1;
1576 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) {
1577 // Use 'parameter' at current position in list of new instruction's formals
1578 // instead of 'opid' when looking up info internal to new_inst
1579 const char *parameter = formal_lst->iter();
1580 if (!parameter) {
1581 globalAD->syntax_err(node->_linenum, "Operand %s of expand instruction %s has"
1582 " no equivalent in new instruction %s.",
1583 opid, node->_ident, new_inst->_ident);
1584 assert(0, "Wrong expand");
1585 }
1587 // Check for an operand which is created in the expand rule
1588 if ((exp_pos = node->_exprule->_newopers.index(opid)) != -1) {
1589 new_pos = new_inst->operand_position(parameter,Component::USE);
1590 exp_pos += node->num_opnds();
1591 // If there is no use of the created operand, just skip it
1592 if (new_pos != NameList::Not_in_list) {
1593 //Copy the operand from the original made above
1594 fprintf(fp," n%d->set_opnd_array(%d, op%d->clone(C)); // %s\n",
1595 cnt, new_pos, exp_pos-node->num_opnds(), opid);
1596 // Check for who defines this operand & add edge if needed
1597 fprintf(fp," if(tmp%d != NULL)\n", exp_pos);
1598 fprintf(fp," n%d->add_req(tmp%d);\n", cnt, exp_pos);
1599 }
1600 }
1601 else {
1602 // Use operand name to get an index into instruction component list
1603 // ins = (InstructForm *) _globalNames[new_id];
1604 exp_pos = node->operand_position_format(opid);
1605 assert(exp_pos != -1, "Bad expand rule");
1606 if (prev_pos > exp_pos && expand_instruction->_matrule != NULL) {
1607 // For the add_req calls below to work correctly they need
1608 // to added in the same order that a match would add them.
1609 // This means that they would need to be in the order of
1610 // the components list instead of the formal parameters.
1611 // This is a sort of hidden invariant that previously
1612 // wasn't checked and could lead to incorrectly
1613 // constructed nodes.
1614 syntax_err(node->_linenum, "For expand in %s to work, parameter declaration order in %s must follow matchrule\n",
1615 node->_ident, new_inst->_ident);
1616 }
1617 prev_pos = exp_pos;
1619 new_pos = new_inst->operand_position(parameter,Component::USE);
1620 if (new_pos != -1) {
1621 // Copy the operand from the ExpandNode to the new node
1622 fprintf(fp," n%d->set_opnd_array(%d, opnd_array(%d)->clone(C)); // %s\n",
1623 cnt, new_pos, exp_pos, opid);
1624 // For each operand add appropriate input edges by looking at tmp's
1625 fprintf(fp," if(tmp%d == this) {\n", exp_pos);
1626 // Grab corresponding edges from ExpandNode and insert them here
1627 fprintf(fp," for(unsigned i = 0; i < num%d; i++) {\n", exp_pos);
1628 fprintf(fp," n%d->add_req(_in[i + idx%d]);\n", cnt, exp_pos);
1629 fprintf(fp," }\n");
1630 fprintf(fp," }\n");
1631 // This value is generated by one of the new instructions
1632 fprintf(fp," else n%d->add_req(tmp%d);\n", cnt, exp_pos);
1633 }
1634 }
1636 // Update the DAG tmp's for values defined by this instruction
1637 int new_def_pos = new_inst->operand_position(parameter,Component::DEF);
1638 Effect *eform = (Effect *)new_inst->_effects[parameter];
1639 // If this operand is a definition in either an effects rule
1640 // or a match rule
1641 if((eform) && (is_def(eform->_use_def))) {
1642 // Update the temp associated with this operand
1643 fprintf(fp," tmp%d = n%d;\n", exp_pos, cnt);
1644 }
1645 else if( new_def_pos != -1 ) {
1646 // Instruction defines a value but user did not declare it
1647 // in the 'effect' clause
1648 fprintf(fp," tmp%d = n%d;\n", exp_pos, cnt);
1649 }
1650 } // done iterating over a new instruction's operands
1652 // Invoke Expand() for the newly created instruction.
1653 fprintf(fp," result = n%d->Expand( state, proj_list, mem );\n", cnt);
1654 assert( !new_inst->expands(), "Do not have complete support for recursive expansion");
1655 } // done iterating over new instructions
1656 fprintf(fp,"\n");
1657 } // done generating expand rule
1659 // Generate projections for instruction's additional DEFs and KILLs
1660 if( ! node->expands() && (node->needs_projections() || node->has_temps())) {
1661 // Get string representing the MachNode that projections point at
1662 const char *machNode = "this";
1663 // Generate the projections
1664 fprintf(fp," // Add projection edges for additional defs or kills\n");
1666 // Examine each component to see if it is a DEF or KILL
1667 node->_components.reset();
1668 // Skip the first component, if already handled as (SET dst (...))
1669 Component *comp = NULL;
1670 // For kills, the choice of projection numbers is arbitrary
1671 int proj_no = 1;
1672 bool declared_def = false;
1673 bool declared_kill = false;
1675 while( (comp = node->_components.iter()) != NULL ) {
1676 // Lookup register class associated with operand type
1677 Form *form = (Form*)_globalNames[comp->_type];
1678 assert( form, "component type must be a defined form");
1679 OperandForm *op = form->is_operand();
1681 if (comp->is(Component::TEMP)) {
1682 fprintf(fp, " // TEMP %s\n", comp->_name);
1683 if (!declared_def) {
1684 // Define the variable "def" to hold new MachProjNodes
1685 fprintf(fp, " MachTempNode *def;\n");
1686 declared_def = true;
1687 }
1688 if (op && op->_interface && op->_interface->is_RegInterface()) {
1689 fprintf(fp," def = new (C) MachTempNode(state->MachOperGenerator( %s, C ));\n",
1690 machOperEnum(op->_ident));
1691 fprintf(fp," add_req(def);\n");
1692 // The operand for TEMP is already constructed during
1693 // this mach node construction, see buildMachNode().
1694 //
1695 // int idx = node->operand_position_format(comp->_name);
1696 // fprintf(fp," set_opnd_array(%d, state->MachOperGenerator( %s, C ));\n",
1697 // idx, machOperEnum(op->_ident));
1698 } else {
1699 assert(false, "can't have temps which aren't registers");
1700 }
1701 } else if (comp->isa(Component::KILL)) {
1702 fprintf(fp, " // DEF/KILL %s\n", comp->_name);
1704 if (!declared_kill) {
1705 // Define the variable "kill" to hold new MachProjNodes
1706 fprintf(fp, " MachProjNode *kill;\n");
1707 declared_kill = true;
1708 }
1710 assert( op, "Support additional KILLS for base operands");
1711 const char *regmask = reg_mask(*op);
1712 const char *ideal_type = op->ideal_type(_globalNames, _register);
1714 if (!op->is_bound_register()) {
1715 syntax_err(node->_linenum, "In %s only bound registers can be killed: %s %s\n",
1716 node->_ident, comp->_type, comp->_name);
1717 }
1719 fprintf(fp," kill = ");
1720 fprintf(fp,"new (C) MachProjNode( %s, %d, (%s), Op_%s );\n",
1721 machNode, proj_no++, regmask, ideal_type);
1722 fprintf(fp," proj_list.push(kill);\n");
1723 }
1724 }
1725 }
1727 if( !node->expands() && node->_matrule != NULL ) {
1728 // Remove duplicated operands and inputs which use the same name.
1729 // Seach through match operands for the same name usage.
1730 uint cur_num_opnds = node->num_opnds();
1731 if( cur_num_opnds > 1 && cur_num_opnds != node->num_unique_opnds() ) {
1732 Component *comp = NULL;
1733 // Build mapping from num_edges to local variables
1734 fprintf(fp," unsigned num0 = 0;\n");
1735 for( i = 1; i < cur_num_opnds; i++ ) {
1736 fprintf(fp," unsigned num%d = opnd_array(%d)->num_edges();",i,i);
1737 fprintf(fp, " \t// %s\n", node->opnd_ident(i));
1738 }
1739 // Build a mapping from operand index to input edges
1740 fprintf(fp," unsigned idx0 = oper_input_base();\n");
1741 for( i = 0; i < cur_num_opnds; i++ ) {
1742 fprintf(fp," unsigned idx%d = idx%d + num%d;\n",
1743 i+1,i,i);
1744 }
1746 uint new_num_opnds = 1;
1747 node->_components.reset();
1748 // Skip first unique operands.
1749 for( i = 1; i < cur_num_opnds; i++ ) {
1750 comp = node->_components.iter();
1751 if (i != node->unique_opnds_idx(i)) {
1752 break;
1753 }
1754 new_num_opnds++;
1755 }
1756 // Replace not unique operands with next unique operands.
1757 for( ; i < cur_num_opnds; i++ ) {
1758 comp = node->_components.iter();
1759 uint j = node->unique_opnds_idx(i);
1760 // unique_opnds_idx(i) is unique if unique_opnds_idx(j) is not unique.
1761 if( j != node->unique_opnds_idx(j) ) {
1762 fprintf(fp," set_opnd_array(%d, opnd_array(%d)->clone(C)); // %s\n",
1763 new_num_opnds, i, comp->_name);
1764 // delete not unique edges here
1765 fprintf(fp," for(unsigned i = 0; i < num%d; i++) {\n", i);
1766 fprintf(fp," set_req(i + idx%d, _in[i + idx%d]);\n", new_num_opnds, i);
1767 fprintf(fp," }\n");
1768 fprintf(fp," num%d = num%d;\n", new_num_opnds, i);
1769 fprintf(fp," idx%d = idx%d + num%d;\n", new_num_opnds+1, new_num_opnds, new_num_opnds);
1770 new_num_opnds++;
1771 }
1772 }
1773 // delete the rest of edges
1774 fprintf(fp," for(int i = idx%d - 1; i >= (int)idx%d; i--) {\n", cur_num_opnds, new_num_opnds);
1775 fprintf(fp," del_req(i);\n");
1776 fprintf(fp," }\n");
1777 fprintf(fp," _num_opnds = %d;\n", new_num_opnds);
1778 assert(new_num_opnds == node->num_unique_opnds(), "what?");
1779 }
1780 }
1782 // If the node is a MachConstantNode, insert the MachConstantBaseNode edge.
1783 // NOTE: this edge must be the last input (see MachConstantNode::mach_constant_base_node_input).
1784 // There are nodes that don't use $constantablebase, but still require that it
1785 // is an input to the node. Example: divF_reg_immN, Repl32B_imm on x86_64.
1786 if (node->is_mach_constant() || node->needs_constant_base()) {
1787 if (node->is_ideal_call() != Form::invalid_type &&
1788 node->is_ideal_call() != Form::JAVA_LEAF) {
1789 fprintf(fp, " // MachConstantBaseNode added in matcher.\n");
1790 _needs_clone_jvms = true;
1791 } else {
1792 fprintf(fp, " add_req(C->mach_constant_base_node());\n");
1793 }
1794 }
1796 fprintf(fp, "\n");
1797 if (node->expands()) {
1798 fprintf(fp, " return result;\n");
1799 } else {
1800 fprintf(fp, " return this;\n");
1801 }
1802 fprintf(fp, "}\n");
1803 fprintf(fp, "\n");
1804 }
1807 //------------------------------Emit Routines----------------------------------
1808 // Special classes and routines for defining node emit routines which output
1809 // target specific instruction object encodings.
1810 // Define the ___Node::emit() routine
1811 //
1812 // (1) void ___Node::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
1813 // (2) // ... encoding defined by user
1814 // (3)
1815 // (4) }
1816 //
1818 class DefineEmitState {
1819 private:
1820 enum reloc_format { RELOC_NONE = -1,
1821 RELOC_IMMEDIATE = 0,
1822 RELOC_DISP = 1,
1823 RELOC_CALL_DISP = 2 };
1824 enum literal_status{ LITERAL_NOT_SEEN = 0,
1825 LITERAL_SEEN = 1,
1826 LITERAL_ACCESSED = 2,
1827 LITERAL_OUTPUT = 3 };
1828 // Temporaries that describe current operand
1829 bool _cleared;
1830 OpClassForm *_opclass;
1831 OperandForm *_operand;
1832 int _operand_idx;
1833 const char *_local_name;
1834 const char *_operand_name;
1835 bool _doing_disp;
1836 bool _doing_constant;
1837 Form::DataType _constant_type;
1838 DefineEmitState::literal_status _constant_status;
1839 DefineEmitState::literal_status _reg_status;
1840 bool _doing_emit8;
1841 bool _doing_emit_d32;
1842 bool _doing_emit_d16;
1843 bool _doing_emit_hi;
1844 bool _doing_emit_lo;
1845 bool _may_reloc;
1846 reloc_format _reloc_form;
1847 const char * _reloc_type;
1848 bool _processing_noninput;
1850 NameList _strings_to_emit;
1852 // Stable state, set by constructor
1853 ArchDesc &_AD;
1854 FILE *_fp;
1855 EncClass &_encoding;
1856 InsEncode &_ins_encode;
1857 InstructForm &_inst;
1859 public:
1860 DefineEmitState(FILE *fp, ArchDesc &AD, EncClass &encoding,
1861 InsEncode &ins_encode, InstructForm &inst)
1862 : _AD(AD), _fp(fp), _encoding(encoding), _ins_encode(ins_encode), _inst(inst) {
1863 clear();
1864 }
1866 void clear() {
1867 _cleared = true;
1868 _opclass = NULL;
1869 _operand = NULL;
1870 _operand_idx = 0;
1871 _local_name = "";
1872 _operand_name = "";
1873 _doing_disp = false;
1874 _doing_constant= false;
1875 _constant_type = Form::none;
1876 _constant_status = LITERAL_NOT_SEEN;
1877 _reg_status = LITERAL_NOT_SEEN;
1878 _doing_emit8 = false;
1879 _doing_emit_d32= false;
1880 _doing_emit_d16= false;
1881 _doing_emit_hi = false;
1882 _doing_emit_lo = false;
1883 _may_reloc = false;
1884 _reloc_form = RELOC_NONE;
1885 _reloc_type = AdlcVMDeps::none_reloc_type();
1886 _strings_to_emit.clear();
1887 }
1889 // Track necessary state when identifying a replacement variable
1890 // @arg rep_var: The formal parameter of the encoding.
1891 void update_state(const char *rep_var) {
1892 // A replacement variable or one of its subfields
1893 // Obtain replacement variable from list
1894 if ( (*rep_var) != '$' ) {
1895 // A replacement variable, '$' prefix
1896 // check_rep_var( rep_var );
1897 if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
1898 // No state needed.
1899 assert( _opclass == NULL,
1900 "'primary', 'secondary' and 'tertiary' don't follow operand.");
1901 }
1902 else if ((strcmp(rep_var, "constanttablebase") == 0) ||
1903 (strcmp(rep_var, "constantoffset") == 0) ||
1904 (strcmp(rep_var, "constantaddress") == 0)) {
1905 if (!(_inst.is_mach_constant() || _inst.needs_constant_base())) {
1906 _AD.syntax_err(_encoding._linenum,
1907 "Replacement variable %s not allowed in instruct %s (only in MachConstantNode or MachCall).\n",
1908 rep_var, _encoding._name);
1909 }
1910 }
1911 else {
1912 // Lookup its position in (formal) parameter list of encoding
1913 int param_no = _encoding.rep_var_index(rep_var);
1914 if ( param_no == -1 ) {
1915 _AD.syntax_err( _encoding._linenum,
1916 "Replacement variable %s not found in enc_class %s.\n",
1917 rep_var, _encoding._name);
1918 }
1920 // Lookup the corresponding ins_encode parameter
1921 // This is the argument (actual parameter) to the encoding.
1922 const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
1923 if (inst_rep_var == NULL) {
1924 _AD.syntax_err( _ins_encode._linenum,
1925 "Parameter %s not passed to enc_class %s from instruct %s.\n",
1926 rep_var, _encoding._name, _inst._ident);
1927 }
1929 // Check if instruction's actual parameter is a local name in the instruction
1930 const Form *local = _inst._localNames[inst_rep_var];
1931 OpClassForm *opc = (local != NULL) ? local->is_opclass() : NULL;
1932 // Note: assert removed to allow constant and symbolic parameters
1933 // assert( opc, "replacement variable was not found in local names");
1934 // Lookup the index position iff the replacement variable is a localName
1935 int idx = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
1937 if ( idx != -1 ) {
1938 // This is a local in the instruction
1939 // Update local state info.
1940 _opclass = opc;
1941 _operand_idx = idx;
1942 _local_name = rep_var;
1943 _operand_name = inst_rep_var;
1945 // !!!!!
1946 // Do not support consecutive operands.
1947 assert( _operand == NULL, "Unimplemented()");
1948 _operand = opc->is_operand();
1949 }
1950 else if( ADLParser::is_literal_constant(inst_rep_var) ) {
1951 // Instruction provided a constant expression
1952 // Check later that encoding specifies $$$constant to resolve as constant
1953 _constant_status = LITERAL_SEEN;
1954 }
1955 else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
1956 // Instruction provided an opcode: "primary", "secondary", "tertiary"
1957 // Check later that encoding specifies $$$constant to resolve as constant
1958 _constant_status = LITERAL_SEEN;
1959 }
1960 else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
1961 // Instruction provided a literal register name for this parameter
1962 // Check that encoding specifies $$$reg to resolve.as register.
1963 _reg_status = LITERAL_SEEN;
1964 }
1965 else {
1966 // Check for unimplemented functionality before hard failure
1967 assert( strcmp(opc->_ident,"label")==0, "Unimplemented() Label");
1968 assert( false, "ShouldNotReachHere()");
1969 }
1970 } // done checking which operand this is.
1971 } else {
1972 //
1973 // A subfield variable, '$$' prefix
1974 // Check for fields that may require relocation information.
1975 // Then check that literal register parameters are accessed with 'reg' or 'constant'
1976 //
1977 if ( strcmp(rep_var,"$disp") == 0 ) {
1978 _doing_disp = true;
1979 assert( _opclass, "Must use operand or operand class before '$disp'");
1980 if( _operand == NULL ) {
1981 // Only have an operand class, generate run-time check for relocation
1982 _may_reloc = true;
1983 _reloc_form = RELOC_DISP;
1984 _reloc_type = AdlcVMDeps::oop_reloc_type();
1985 } else {
1986 // Do precise check on operand: is it a ConP or not
1987 //
1988 // Check interface for value of displacement
1989 assert( ( _operand->_interface != NULL ),
1990 "$disp can only follow memory interface operand");
1991 MemInterface *mem_interface= _operand->_interface->is_MemInterface();
1992 assert( mem_interface != NULL,
1993 "$disp can only follow memory interface operand");
1994 const char *disp = mem_interface->_disp;
1996 if( disp != NULL && (*disp == '$') ) {
1997 // MemInterface::disp contains a replacement variable,
1998 // Check if this matches a ConP
1999 //
2000 // Lookup replacement variable, in operand's component list
2001 const char *rep_var_name = disp + 1; // Skip '$'
2002 const Component *comp = _operand->_components.search(rep_var_name);
2003 assert( comp != NULL,"Replacement variable not found in components");
2004 const char *type = comp->_type;
2005 // Lookup operand form for replacement variable's type
2006 const Form *form = _AD.globalNames()[type];
2007 assert( form != NULL, "Replacement variable's type not found");
2008 OperandForm *op = form->is_operand();
2009 assert( op, "Attempting to emit a non-register or non-constant");
2010 // Check if this is a constant
2011 if (op->_matrule && op->_matrule->is_base_constant(_AD.globalNames())) {
2012 // Check which constant this name maps to: _c0, _c1, ..., _cn
2013 // const int idx = _operand.constant_position(_AD.globalNames(), comp);
2014 // assert( idx != -1, "Constant component not found in operand");
2015 Form::DataType dtype = op->is_base_constant(_AD.globalNames());
2016 if ( dtype == Form::idealP ) {
2017 _may_reloc = true;
2018 // No longer true that idealP is always an oop
2019 _reloc_form = RELOC_DISP;
2020 _reloc_type = AdlcVMDeps::oop_reloc_type();
2021 }
2022 }
2024 else if( _operand->is_user_name_for_sReg() != Form::none ) {
2025 // The only non-constant allowed access to disp is an operand sRegX in a stackSlotX
2026 assert( op->ideal_to_sReg_type(type) != Form::none, "StackSlots access displacements using 'sRegs'");
2027 _may_reloc = false;
2028 } else {
2029 assert( false, "fatal(); Only stackSlots can access a non-constant using 'disp'");
2030 }
2031 }
2032 } // finished with precise check of operand for relocation.
2033 } // finished with subfield variable
2034 else if ( strcmp(rep_var,"$constant") == 0 ) {
2035 _doing_constant = true;
2036 if ( _constant_status == LITERAL_NOT_SEEN ) {
2037 // Check operand for type of constant
2038 assert( _operand, "Must use operand before '$$constant'");
2039 Form::DataType dtype = _operand->is_base_constant(_AD.globalNames());
2040 _constant_type = dtype;
2041 if ( dtype == Form::idealP ) {
2042 _may_reloc = true;
2043 // No longer true that idealP is always an oop
2044 // // _must_reloc = true;
2045 _reloc_form = RELOC_IMMEDIATE;
2046 _reloc_type = AdlcVMDeps::oop_reloc_type();
2047 } else {
2048 // No relocation information needed
2049 }
2050 } else {
2051 // User-provided literals may not require relocation information !!!!!
2052 assert( _constant_status == LITERAL_SEEN, "Must know we are processing a user-provided literal");
2053 }
2054 }
2055 else if ( strcmp(rep_var,"$label") == 0 ) {
2056 // Calls containing labels require relocation
2057 if ( _inst.is_ideal_call() ) {
2058 _may_reloc = true;
2059 // !!!!! !!!!!
2060 _reloc_type = AdlcVMDeps::none_reloc_type();
2061 }
2062 }
2064 // literal register parameter must be accessed as a 'reg' field.
2065 if ( _reg_status != LITERAL_NOT_SEEN ) {
2066 assert( _reg_status == LITERAL_SEEN, "Must have seen register literal before now");
2067 if (strcmp(rep_var,"$reg") == 0 || reg_conversion(rep_var) != NULL) {
2068 _reg_status = LITERAL_ACCESSED;
2069 } else {
2070 _AD.syntax_err(_encoding._linenum,
2071 "Invalid access to literal register parameter '%s' in %s.\n",
2072 rep_var, _encoding._name);
2073 assert( false, "invalid access to literal register parameter");
2074 }
2075 }
2076 // literal constant parameters must be accessed as a 'constant' field
2077 if (_constant_status != LITERAL_NOT_SEEN) {
2078 assert(_constant_status == LITERAL_SEEN, "Must have seen constant literal before now");
2079 if (strcmp(rep_var,"$constant") == 0) {
2080 _constant_status = LITERAL_ACCESSED;
2081 } else {
2082 _AD.syntax_err(_encoding._linenum,
2083 "Invalid access to literal constant parameter '%s' in %s.\n",
2084 rep_var, _encoding._name);
2085 }
2086 }
2087 } // end replacement and/or subfield
2089 }
2091 void add_rep_var(const char *rep_var) {
2092 // Handle subfield and replacement variables.
2093 if ( ( *rep_var == '$' ) && ( *(rep_var+1) == '$' ) ) {
2094 // Check for emit prefix, '$$emit32'
2095 assert( _cleared, "Can not nest $$$emit32");
2096 if ( strcmp(rep_var,"$$emit32") == 0 ) {
2097 _doing_emit_d32 = true;
2098 }
2099 else if ( strcmp(rep_var,"$$emit16") == 0 ) {
2100 _doing_emit_d16 = true;
2101 }
2102 else if ( strcmp(rep_var,"$$emit_hi") == 0 ) {
2103 _doing_emit_hi = true;
2104 }
2105 else if ( strcmp(rep_var,"$$emit_lo") == 0 ) {
2106 _doing_emit_lo = true;
2107 }
2108 else if ( strcmp(rep_var,"$$emit8") == 0 ) {
2109 _doing_emit8 = true;
2110 }
2111 else {
2112 _AD.syntax_err(_encoding._linenum, "Unsupported $$operation '%s'\n",rep_var);
2113 assert( false, "fatal();");
2114 }
2115 }
2116 else {
2117 // Update state for replacement variables
2118 update_state( rep_var );
2119 _strings_to_emit.addName(rep_var);
2120 }
2121 _cleared = false;
2122 }
2124 void emit_replacement() {
2125 // A replacement variable or one of its subfields
2126 // Obtain replacement variable from list
2127 // const char *ec_rep_var = encoding->_rep_vars.iter();
2128 const char *rep_var;
2129 _strings_to_emit.reset();
2130 while ( (rep_var = _strings_to_emit.iter()) != NULL ) {
2132 if ( (*rep_var) == '$' ) {
2133 // A subfield variable, '$$' prefix
2134 emit_field( rep_var );
2135 } else {
2136 if (_strings_to_emit.peek() != NULL &&
2137 strcmp(_strings_to_emit.peek(), "$Address") == 0) {
2138 fprintf(_fp, "Address::make_raw(");
2140 emit_rep_var( rep_var );
2141 fprintf(_fp,"->base(ra_,this,idx%d), ", _operand_idx);
2143 _reg_status = LITERAL_ACCESSED;
2144 emit_rep_var( rep_var );
2145 fprintf(_fp,"->index(ra_,this,idx%d), ", _operand_idx);
2147 _reg_status = LITERAL_ACCESSED;
2148 emit_rep_var( rep_var );
2149 fprintf(_fp,"->scale(), ");
2151 _reg_status = LITERAL_ACCESSED;
2152 emit_rep_var( rep_var );
2153 Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2154 if( _operand && _operand_idx==0 && stack_type != Form::none ) {
2155 fprintf(_fp,"->disp(ra_,this,0), ");
2156 } else {
2157 fprintf(_fp,"->disp(ra_,this,idx%d), ", _operand_idx);
2158 }
2160 _reg_status = LITERAL_ACCESSED;
2161 emit_rep_var( rep_var );
2162 fprintf(_fp,"->disp_reloc())");
2164 // skip trailing $Address
2165 _strings_to_emit.iter();
2166 } else {
2167 // A replacement variable, '$' prefix
2168 const char* next = _strings_to_emit.peek();
2169 const char* next2 = _strings_to_emit.peek(2);
2170 if (next != NULL && next2 != NULL && strcmp(next2, "$Register") == 0 &&
2171 (strcmp(next, "$base") == 0 || strcmp(next, "$index") == 0)) {
2172 // handle $rev_var$$base$$Register and $rev_var$$index$$Register by
2173 // producing as_Register(opnd_array(#)->base(ra_,this,idx1)).
2174 fprintf(_fp, "as_Register(");
2175 // emit the operand reference
2176 emit_rep_var( rep_var );
2177 rep_var = _strings_to_emit.iter();
2178 assert(strcmp(rep_var, "$base") == 0 || strcmp(rep_var, "$index") == 0, "bad pattern");
2179 // handle base or index
2180 emit_field(rep_var);
2181 rep_var = _strings_to_emit.iter();
2182 assert(strcmp(rep_var, "$Register") == 0, "bad pattern");
2183 // close up the parens
2184 fprintf(_fp, ")");
2185 } else {
2186 emit_rep_var( rep_var );
2187 }
2188 }
2189 } // end replacement and/or subfield
2190 }
2191 }
2193 void emit_reloc_type(const char* type) {
2194 fprintf(_fp, "%s", type)
2195 ;
2196 }
2199 void emit() {
2200 //
2201 // "emit_d32_reloc(" or "emit_hi_reloc" or "emit_lo_reloc"
2202 //
2203 // Emit the function name when generating an emit function
2204 if ( _doing_emit_d32 || _doing_emit_hi || _doing_emit_lo ) {
2205 const char *d32_hi_lo = _doing_emit_d32 ? "d32" : (_doing_emit_hi ? "hi" : "lo");
2206 // In general, relocatable isn't known at compiler compile time.
2207 // Check results of prior scan
2208 if ( ! _may_reloc ) {
2209 // Definitely don't need relocation information
2210 fprintf( _fp, "emit_%s(cbuf, ", d32_hi_lo );
2211 emit_replacement(); fprintf(_fp, ")");
2212 }
2213 else {
2214 // Emit RUNTIME CHECK to see if value needs relocation info
2215 // If emitting a relocatable address, use 'emit_d32_reloc'
2216 const char *disp_constant = _doing_disp ? "disp" : _doing_constant ? "constant" : "INVALID";
2217 assert( (_doing_disp || _doing_constant)
2218 && !(_doing_disp && _doing_constant),
2219 "Must be emitting either a displacement or a constant");
2220 fprintf(_fp,"\n");
2221 fprintf(_fp,"if ( opnd_array(%d)->%s_reloc() != relocInfo::none ) {\n",
2222 _operand_idx, disp_constant);
2223 fprintf(_fp," ");
2224 fprintf(_fp,"emit_%s_reloc(cbuf, ", d32_hi_lo );
2225 emit_replacement(); fprintf(_fp,", ");
2226 fprintf(_fp,"opnd_array(%d)->%s_reloc(), ",
2227 _operand_idx, disp_constant);
2228 fprintf(_fp, "%d", _reloc_form);fprintf(_fp, ");");
2229 fprintf(_fp,"\n");
2230 fprintf(_fp,"} else {\n");
2231 fprintf(_fp," emit_%s(cbuf, ", d32_hi_lo);
2232 emit_replacement(); fprintf(_fp, ");\n"); fprintf(_fp,"}");
2233 }
2234 }
2235 else if ( _doing_emit_d16 ) {
2236 // Relocation of 16-bit values is not supported
2237 fprintf(_fp,"emit_d16(cbuf, ");
2238 emit_replacement(); fprintf(_fp, ")");
2239 // No relocation done for 16-bit values
2240 }
2241 else if ( _doing_emit8 ) {
2242 // Relocation of 8-bit values is not supported
2243 fprintf(_fp,"emit_d8(cbuf, ");
2244 emit_replacement(); fprintf(_fp, ")");
2245 // No relocation done for 8-bit values
2246 }
2247 else {
2248 // Not an emit# command, just output the replacement string.
2249 emit_replacement();
2250 }
2252 // Get ready for next state collection.
2253 clear();
2254 }
2256 private:
2258 // recognizes names which represent MacroAssembler register types
2259 // and return the conversion function to build them from OptoReg
2260 const char* reg_conversion(const char* rep_var) {
2261 if (strcmp(rep_var,"$Register") == 0) return "as_Register";
2262 if (strcmp(rep_var,"$FloatRegister") == 0) return "as_FloatRegister";
2263 #if defined(IA32) || defined(AMD64)
2264 if (strcmp(rep_var,"$XMMRegister") == 0) return "as_XMMRegister";
2265 #endif
2266 if (strcmp(rep_var,"$CondRegister") == 0) return "as_ConditionRegister";
2267 return NULL;
2268 }
2270 void emit_field(const char *rep_var) {
2271 const char* reg_convert = reg_conversion(rep_var);
2273 // A subfield variable, '$$subfield'
2274 if ( strcmp(rep_var, "$reg") == 0 || reg_convert != NULL) {
2275 // $reg form or the $Register MacroAssembler type conversions
2276 assert( _operand_idx != -1,
2277 "Must use this subfield after operand");
2278 if( _reg_status == LITERAL_NOT_SEEN ) {
2279 if (_processing_noninput) {
2280 const Form *local = _inst._localNames[_operand_name];
2281 OperandForm *oper = local->is_operand();
2282 const RegDef* first = oper->get_RegClass()->find_first_elem();
2283 if (reg_convert != NULL) {
2284 fprintf(_fp, "%s(%s_enc)", reg_convert, first->_regname);
2285 } else {
2286 fprintf(_fp, "%s_enc", first->_regname);
2287 }
2288 } else {
2289 fprintf(_fp,"->%s(ra_,this", reg_convert != NULL ? reg_convert : "reg");
2290 // Add parameter for index position, if not result operand
2291 if( _operand_idx != 0 ) fprintf(_fp,",idx%d", _operand_idx);
2292 fprintf(_fp,")");
2293 fprintf(_fp, "/* %s */", _operand_name);
2294 }
2295 } else {
2296 assert( _reg_status == LITERAL_OUTPUT, "should have output register literal in emit_rep_var");
2297 // Register literal has already been sent to output file, nothing more needed
2298 }
2299 }
2300 else if ( strcmp(rep_var,"$base") == 0 ) {
2301 assert( _operand_idx != -1,
2302 "Must use this subfield after operand");
2303 assert( ! _may_reloc, "UnImplemented()");
2304 fprintf(_fp,"->base(ra_,this,idx%d)", _operand_idx);
2305 }
2306 else if ( strcmp(rep_var,"$index") == 0 ) {
2307 assert( _operand_idx != -1,
2308 "Must use this subfield after operand");
2309 assert( ! _may_reloc, "UnImplemented()");
2310 fprintf(_fp,"->index(ra_,this,idx%d)", _operand_idx);
2311 }
2312 else if ( strcmp(rep_var,"$scale") == 0 ) {
2313 assert( ! _may_reloc, "UnImplemented()");
2314 fprintf(_fp,"->scale()");
2315 }
2316 else if ( strcmp(rep_var,"$cmpcode") == 0 ) {
2317 assert( ! _may_reloc, "UnImplemented()");
2318 fprintf(_fp,"->ccode()");
2319 }
2320 else if ( strcmp(rep_var,"$constant") == 0 ) {
2321 if( _constant_status == LITERAL_NOT_SEEN ) {
2322 if ( _constant_type == Form::idealD ) {
2323 fprintf(_fp,"->constantD()");
2324 } else if ( _constant_type == Form::idealF ) {
2325 fprintf(_fp,"->constantF()");
2326 } else if ( _constant_type == Form::idealL ) {
2327 fprintf(_fp,"->constantL()");
2328 } else {
2329 fprintf(_fp,"->constant()");
2330 }
2331 } else {
2332 assert( _constant_status == LITERAL_OUTPUT, "should have output constant literal in emit_rep_var");
2333 // Constant literal has already been sent to output file, nothing more needed
2334 }
2335 }
2336 else if ( strcmp(rep_var,"$disp") == 0 ) {
2337 Form::DataType stack_type = _operand ? _operand->is_user_name_for_sReg() : Form::none;
2338 if( _operand && _operand_idx==0 && stack_type != Form::none ) {
2339 fprintf(_fp,"->disp(ra_,this,0)");
2340 } else {
2341 fprintf(_fp,"->disp(ra_,this,idx%d)", _operand_idx);
2342 }
2343 }
2344 else if ( strcmp(rep_var,"$label") == 0 ) {
2345 fprintf(_fp,"->label()");
2346 }
2347 else if ( strcmp(rep_var,"$method") == 0 ) {
2348 fprintf(_fp,"->method()");
2349 }
2350 else {
2351 printf("emit_field: %s\n",rep_var);
2352 globalAD->syntax_err(_inst._linenum, "Unknown replacement variable %s in format statement of %s.",
2353 rep_var, _inst._ident);
2354 assert( false, "UnImplemented()");
2355 }
2356 }
2359 void emit_rep_var(const char *rep_var) {
2360 _processing_noninput = false;
2361 // A replacement variable, originally '$'
2362 if ( Opcode::as_opcode_type(rep_var) != Opcode::NOT_AN_OPCODE ) {
2363 if (!_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(rep_var) )) {
2364 // Missing opcode
2365 _AD.syntax_err( _inst._linenum,
2366 "Missing $%s opcode definition in %s, used by encoding %s\n",
2367 rep_var, _inst._ident, _encoding._name);
2368 }
2369 }
2370 else if (strcmp(rep_var, "constanttablebase") == 0) {
2371 fprintf(_fp, "as_Register(ra_->get_encode(in(mach_constant_base_node_input())))");
2372 }
2373 else if (strcmp(rep_var, "constantoffset") == 0) {
2374 fprintf(_fp, "constant_offset()");
2375 }
2376 else if (strcmp(rep_var, "constantaddress") == 0) {
2377 fprintf(_fp, "InternalAddress(__ code()->consts()->start() + constant_offset())");
2378 }
2379 else {
2380 // Lookup its position in parameter list
2381 int param_no = _encoding.rep_var_index(rep_var);
2382 if ( param_no == -1 ) {
2383 _AD.syntax_err( _encoding._linenum,
2384 "Replacement variable %s not found in enc_class %s.\n",
2385 rep_var, _encoding._name);
2386 }
2387 // Lookup the corresponding ins_encode parameter
2388 const char *inst_rep_var = _ins_encode.rep_var_name(_inst, param_no);
2390 // Check if instruction's actual parameter is a local name in the instruction
2391 const Form *local = _inst._localNames[inst_rep_var];
2392 OpClassForm *opc = (local != NULL) ? local->is_opclass() : NULL;
2393 // Note: assert removed to allow constant and symbolic parameters
2394 // assert( opc, "replacement variable was not found in local names");
2395 // Lookup the index position iff the replacement variable is a localName
2396 int idx = (opc != NULL) ? _inst.operand_position_format(inst_rep_var) : -1;
2397 if( idx != -1 ) {
2398 if (_inst.is_noninput_operand(idx)) {
2399 // This operand isn't a normal input so printing it is done
2400 // specially.
2401 _processing_noninput = true;
2402 } else {
2403 // Output the emit code for this operand
2404 fprintf(_fp,"opnd_array(%d)",idx);
2405 }
2406 assert( _operand == opc->is_operand(),
2407 "Previous emit $operand does not match current");
2408 }
2409 else if( ADLParser::is_literal_constant(inst_rep_var) ) {
2410 // else check if it is a constant expression
2411 // Removed following assert to allow primitive C types as arguments to encodings
2412 // assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2413 fprintf(_fp,"(%s)", inst_rep_var);
2414 _constant_status = LITERAL_OUTPUT;
2415 }
2416 else if( Opcode::as_opcode_type(inst_rep_var) != Opcode::NOT_AN_OPCODE ) {
2417 // else check if "primary", "secondary", "tertiary"
2418 assert( _constant_status == LITERAL_ACCESSED, "Must be processing a literal constant parameter");
2419 if (!_inst._opcode->print_opcode(_fp, Opcode::as_opcode_type(inst_rep_var) )) {
2420 // Missing opcode
2421 _AD.syntax_err( _inst._linenum,
2422 "Missing $%s opcode definition in %s\n",
2423 rep_var, _inst._ident);
2425 }
2426 _constant_status = LITERAL_OUTPUT;
2427 }
2428 else if((_AD.get_registers() != NULL ) && (_AD.get_registers()->getRegDef(inst_rep_var) != NULL)) {
2429 // Instruction provided a literal register name for this parameter
2430 // Check that encoding specifies $$$reg to resolve.as register.
2431 assert( _reg_status == LITERAL_ACCESSED, "Must be processing a literal register parameter");
2432 fprintf(_fp,"(%s_enc)", inst_rep_var);
2433 _reg_status = LITERAL_OUTPUT;
2434 }
2435 else {
2436 // Check for unimplemented functionality before hard failure
2437 assert( strcmp(opc->_ident,"label")==0, "Unimplemented() Label");
2438 assert( false, "ShouldNotReachHere()");
2439 }
2440 // all done
2441 }
2442 }
2444 }; // end class DefineEmitState
2447 void ArchDesc::defineSize(FILE *fp, InstructForm &inst) {
2449 //(1)
2450 // Output instruction's emit prototype
2451 fprintf(fp,"uint %sNode::size(PhaseRegAlloc *ra_) const {\n",
2452 inst._ident);
2454 fprintf(fp, " assert(VerifyOops || MachNode::size(ra_) <= %s, \"bad fixed size\");\n", inst._size);
2456 //(2)
2457 // Print the size
2458 fprintf(fp, " return (VerifyOops ? MachNode::size(ra_) : %s);\n", inst._size);
2460 // (3) and (4)
2461 fprintf(fp,"}\n\n");
2462 }
2464 // Emit postalloc expand function.
2465 void ArchDesc::define_postalloc_expand(FILE *fp, InstructForm &inst) {
2466 InsEncode *ins_encode = inst._insencode;
2468 // Output instruction's postalloc_expand prototype.
2469 fprintf(fp, "void %sNode::postalloc_expand(GrowableArray <Node *> *nodes, PhaseRegAlloc *ra_) {\n",
2470 inst._ident);
2472 assert((_encode != NULL) && (ins_encode != NULL), "You must define an encode section.");
2474 // Output each operand's offset into the array of registers.
2475 inst.index_temps(fp, _globalNames);
2477 // Output variables "unsigned idx_<par_name>", Node *n_<par_name> and "MachOpnd *op_<par_name>"
2478 // for each parameter <par_name> specified in the encoding.
2479 ins_encode->reset();
2480 const char *ec_name = ins_encode->encode_class_iter();
2481 assert(ec_name != NULL, "Postalloc expand must specify an encoding.");
2483 EncClass *encoding = _encode->encClass(ec_name);
2484 if (encoding == NULL) {
2485 fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2486 abort();
2487 }
2488 if (ins_encode->current_encoding_num_args() != encoding->num_args()) {
2489 globalAD->syntax_err(ins_encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2490 inst._ident, ins_encode->current_encoding_num_args(),
2491 ec_name, encoding->num_args());
2492 }
2494 fprintf(fp, " // Access to ins and operands for postalloc expand.\n");
2495 const int buflen = 2000;
2496 char idxbuf[buflen]; char *ib = idxbuf; idxbuf[0] = '\0';
2497 char nbuf [buflen]; char *nb = nbuf; nbuf[0] = '\0';
2498 char opbuf [buflen]; char *ob = opbuf; opbuf[0] = '\0';
2500 encoding->_parameter_type.reset();
2501 encoding->_parameter_name.reset();
2502 const char *type = encoding->_parameter_type.iter();
2503 const char *name = encoding->_parameter_name.iter();
2504 int param_no = 0;
2505 for (; (type != NULL) && (name != NULL);
2506 (type = encoding->_parameter_type.iter()), (name = encoding->_parameter_name.iter())) {
2507 const char* arg_name = ins_encode->rep_var_name(inst, param_no);
2508 int idx = inst.operand_position_format(arg_name);
2509 if (strcmp(arg_name, "constanttablebase") == 0) {
2510 ib += sprintf(ib, " unsigned idx_%-5s = mach_constant_base_node_input(); \t// %s, \t%s\n",
2511 name, type, arg_name);
2512 nb += sprintf(nb, " Node *n_%-7s = lookup(idx_%s);\n", name, name);
2513 // There is no operand for the constanttablebase.
2514 } else if (inst.is_noninput_operand(idx)) {
2515 globalAD->syntax_err(inst._linenum,
2516 "In %s: you can not pass the non-input %s to a postalloc expand encoding.\n",
2517 inst._ident, arg_name);
2518 } else {
2519 ib += sprintf(ib, " unsigned idx_%-5s = idx%d; \t// %s, \t%s\n",
2520 name, idx, type, arg_name);
2521 nb += sprintf(nb, " Node *n_%-7s = lookup(idx_%s);\n", name, name);
2522 ob += sprintf(ob, " %sOper *op_%s = (%sOper *)opnd_array(%d);\n", type, name, type, idx);
2523 }
2524 param_no++;
2525 }
2526 assert(ib < &idxbuf[buflen-1] && nb < &nbuf[buflen-1] && ob < &opbuf[buflen-1], "buffer overflow");
2528 fprintf(fp, "%s", idxbuf);
2529 fprintf(fp, " Node *n_region = lookup(0);\n");
2530 fprintf(fp, "%s%s", nbuf, opbuf);
2531 fprintf(fp, " Compile *C = ra_->C;\n");
2533 // Output this instruction's encodings.
2534 fprintf(fp, " {");
2535 const char *ec_code = NULL;
2536 const char *ec_rep_var = NULL;
2537 assert(encoding == _encode->encClass(ec_name), "");
2539 DefineEmitState pending(fp, *this, *encoding, *ins_encode, inst);
2540 encoding->_code.reset();
2541 encoding->_rep_vars.reset();
2542 // Process list of user-defined strings,
2543 // and occurrences of replacement variables.
2544 // Replacement Vars are pushed into a list and then output.
2545 while ((ec_code = encoding->_code.iter()) != NULL) {
2546 if (! encoding->_code.is_signal(ec_code)) {
2547 // Emit pending code.
2548 pending.emit();
2549 pending.clear();
2550 // Emit this code section.
2551 fprintf(fp, "%s", ec_code);
2552 } else {
2553 // A replacement variable or one of its subfields.
2554 // Obtain replacement variable from list.
2555 ec_rep_var = encoding->_rep_vars.iter();
2556 pending.add_rep_var(ec_rep_var);
2557 }
2558 }
2559 // Emit pending code.
2560 pending.emit();
2561 pending.clear();
2562 fprintf(fp, " }\n");
2564 fprintf(fp, "}\n\n");
2566 ec_name = ins_encode->encode_class_iter();
2567 assert(ec_name == NULL, "Postalloc expand may only have one encoding.");
2568 }
2570 // defineEmit -----------------------------------------------------------------
2571 void ArchDesc::defineEmit(FILE* fp, InstructForm& inst) {
2572 InsEncode* encode = inst._insencode;
2574 // (1)
2575 // Output instruction's emit prototype
2576 fprintf(fp, "void %sNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const {\n", inst._ident);
2578 // If user did not define an encode section,
2579 // provide stub that does not generate any machine code.
2580 if( (_encode == NULL) || (encode == NULL) ) {
2581 fprintf(fp, " // User did not define an encode section.\n");
2582 fprintf(fp, "}\n");
2583 return;
2584 }
2586 // Save current instruction's starting address (helps with relocation).
2587 fprintf(fp, " cbuf.set_insts_mark();\n");
2589 // For MachConstantNodes which are ideal jump nodes, fill the jump table.
2590 if (inst.is_mach_constant() && inst.is_ideal_jump()) {
2591 fprintf(fp, " ra_->C->constant_table().fill_jump_table(cbuf, (MachConstantNode*) this, _index2label);\n");
2592 }
2594 // Output each operand's offset into the array of registers.
2595 inst.index_temps(fp, _globalNames);
2597 // Output this instruction's encodings
2598 const char *ec_name;
2599 bool user_defined = false;
2600 encode->reset();
2601 while ((ec_name = encode->encode_class_iter()) != NULL) {
2602 fprintf(fp, " {\n");
2603 // Output user-defined encoding
2604 user_defined = true;
2606 const char *ec_code = NULL;
2607 const char *ec_rep_var = NULL;
2608 EncClass *encoding = _encode->encClass(ec_name);
2609 if (encoding == NULL) {
2610 fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2611 abort();
2612 }
2614 if (encode->current_encoding_num_args() != encoding->num_args()) {
2615 globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2616 inst._ident, encode->current_encoding_num_args(),
2617 ec_name, encoding->num_args());
2618 }
2620 DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2621 encoding->_code.reset();
2622 encoding->_rep_vars.reset();
2623 // Process list of user-defined strings,
2624 // and occurrences of replacement variables.
2625 // Replacement Vars are pushed into a list and then output
2626 while ((ec_code = encoding->_code.iter()) != NULL) {
2627 if (!encoding->_code.is_signal(ec_code)) {
2628 // Emit pending code
2629 pending.emit();
2630 pending.clear();
2631 // Emit this code section
2632 fprintf(fp, "%s", ec_code);
2633 } else {
2634 // A replacement variable or one of its subfields
2635 // Obtain replacement variable from list
2636 ec_rep_var = encoding->_rep_vars.iter();
2637 pending.add_rep_var(ec_rep_var);
2638 }
2639 }
2640 // Emit pending code
2641 pending.emit();
2642 pending.clear();
2643 fprintf(fp, " }\n");
2644 } // end while instruction's encodings
2646 // Check if user stated which encoding to user
2647 if ( user_defined == false ) {
2648 fprintf(fp, " // User did not define which encode class to use.\n");
2649 }
2651 // (3) and (4)
2652 fprintf(fp, "}\n\n");
2653 }
2655 // defineEvalConstant ---------------------------------------------------------
2656 void ArchDesc::defineEvalConstant(FILE* fp, InstructForm& inst) {
2657 InsEncode* encode = inst._constant;
2659 // (1)
2660 // Output instruction's emit prototype
2661 fprintf(fp, "void %sNode::eval_constant(Compile* C) {\n", inst._ident);
2663 // For ideal jump nodes, add a jump-table entry.
2664 if (inst.is_ideal_jump()) {
2665 fprintf(fp, " _constant = C->constant_table().add_jump_table(this);\n");
2666 }
2668 // If user did not define an encode section,
2669 // provide stub that does not generate any machine code.
2670 if ((_encode == NULL) || (encode == NULL)) {
2671 fprintf(fp, " // User did not define an encode section.\n");
2672 fprintf(fp, "}\n");
2673 return;
2674 }
2676 // Output this instruction's encodings
2677 const char *ec_name;
2678 bool user_defined = false;
2679 encode->reset();
2680 while ((ec_name = encode->encode_class_iter()) != NULL) {
2681 fprintf(fp, " {\n");
2682 // Output user-defined encoding
2683 user_defined = true;
2685 const char *ec_code = NULL;
2686 const char *ec_rep_var = NULL;
2687 EncClass *encoding = _encode->encClass(ec_name);
2688 if (encoding == NULL) {
2689 fprintf(stderr, "User did not define contents of this encode_class: %s\n", ec_name);
2690 abort();
2691 }
2693 if (encode->current_encoding_num_args() != encoding->num_args()) {
2694 globalAD->syntax_err(encode->_linenum, "In %s: passing %d arguments to %s but expecting %d",
2695 inst._ident, encode->current_encoding_num_args(),
2696 ec_name, encoding->num_args());
2697 }
2699 DefineEmitState pending(fp, *this, *encoding, *encode, inst);
2700 encoding->_code.reset();
2701 encoding->_rep_vars.reset();
2702 // Process list of user-defined strings,
2703 // and occurrences of replacement variables.
2704 // Replacement Vars are pushed into a list and then output
2705 while ((ec_code = encoding->_code.iter()) != NULL) {
2706 if (!encoding->_code.is_signal(ec_code)) {
2707 // Emit pending code
2708 pending.emit();
2709 pending.clear();
2710 // Emit this code section
2711 fprintf(fp, "%s", ec_code);
2712 } else {
2713 // A replacement variable or one of its subfields
2714 // Obtain replacement variable from list
2715 ec_rep_var = encoding->_rep_vars.iter();
2716 pending.add_rep_var(ec_rep_var);
2717 }
2718 }
2719 // Emit pending code
2720 pending.emit();
2721 pending.clear();
2722 fprintf(fp, " }\n");
2723 } // end while instruction's encodings
2725 // Check if user stated which encoding to user
2726 if (user_defined == false) {
2727 fprintf(fp, " // User did not define which encode class to use.\n");
2728 }
2730 // (3) and (4)
2731 fprintf(fp, "}\n");
2732 }
2734 // ---------------------------------------------------------------------------
2735 //--------Utilities to build MachOper and MachNode derived Classes------------
2736 // ---------------------------------------------------------------------------
2738 //------------------------------Utilities to build Operand Classes------------
2739 static void defineIn_RegMask(FILE *fp, FormDict &globals, OperandForm &oper) {
2740 uint num_edges = oper.num_edges(globals);
2741 if( num_edges != 0 ) {
2742 // Method header
2743 fprintf(fp, "const RegMask *%sOper::in_RegMask(int index) const {\n",
2744 oper._ident);
2746 // Assert that the index is in range.
2747 fprintf(fp, " assert(0 <= index && index < %d, \"index out of range\");\n",
2748 num_edges);
2750 // Figure out if all RegMasks are the same.
2751 const char* first_reg_class = oper.in_reg_class(0, globals);
2752 bool all_same = true;
2753 assert(first_reg_class != NULL, "did not find register mask");
2755 for (uint index = 1; all_same && index < num_edges; index++) {
2756 const char* some_reg_class = oper.in_reg_class(index, globals);
2757 assert(some_reg_class != NULL, "did not find register mask");
2758 if (strcmp(first_reg_class, some_reg_class) != 0) {
2759 all_same = false;
2760 }
2761 }
2763 if (all_same) {
2764 // Return the sole RegMask.
2765 if (strcmp(first_reg_class, "stack_slots") == 0) {
2766 fprintf(fp," return &(Compile::current()->FIRST_STACK_mask());\n");
2767 } else {
2768 const char* first_reg_class_to_upper = toUpper(first_reg_class);
2769 fprintf(fp," return &%s_mask();\n", first_reg_class_to_upper);
2770 delete[] first_reg_class_to_upper;
2771 }
2772 } else {
2773 // Build a switch statement to return the desired mask.
2774 fprintf(fp," switch (index) {\n");
2776 for (uint index = 0; index < num_edges; index++) {
2777 const char *reg_class = oper.in_reg_class(index, globals);
2778 assert(reg_class != NULL, "did not find register mask");
2779 if( !strcmp(reg_class, "stack_slots") ) {
2780 fprintf(fp, " case %d: return &(Compile::current()->FIRST_STACK_mask());\n", index);
2781 } else {
2782 const char* reg_class_to_upper = toUpper(reg_class);
2783 fprintf(fp, " case %d: return &%s_mask();\n", index, reg_class_to_upper);
2784 delete[] reg_class_to_upper;
2785 }
2786 }
2787 fprintf(fp," }\n");
2788 fprintf(fp," ShouldNotReachHere();\n");
2789 fprintf(fp," return NULL;\n");
2790 }
2792 // Method close
2793 fprintf(fp, "}\n\n");
2794 }
2795 }
2797 // generate code to create a clone for a class derived from MachOper
2798 //
2799 // (0) MachOper *MachOperXOper::clone(Compile* C) const {
2800 // (1) return new (C) MachXOper( _ccode, _c0, _c1, ..., _cn);
2801 // (2) }
2802 //
2803 static void defineClone(FILE *fp, FormDict &globalNames, OperandForm &oper) {
2804 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper._ident);
2805 // Check for constants that need to be copied over
2806 const int num_consts = oper.num_consts(globalNames);
2807 const bool is_ideal_bool = oper.is_ideal_bool();
2808 if( (num_consts > 0) ) {
2809 fprintf(fp," return new (C) %sOper(", oper._ident);
2810 // generate parameters for constants
2811 int i = 0;
2812 fprintf(fp,"_c%d", i);
2813 for( i = 1; i < num_consts; ++i) {
2814 fprintf(fp,", _c%d", i);
2815 }
2816 // finish line (1)
2817 fprintf(fp,");\n");
2818 }
2819 else {
2820 assert( num_consts == 0, "Currently support zero or one constant per operand clone function");
2821 fprintf(fp," return new (C) %sOper();\n", oper._ident);
2822 }
2823 // finish method
2824 fprintf(fp,"}\n");
2825 }
2827 // Helper functions for bug 4796752, abstracted with minimal modification
2828 // from define_oper_interface()
2829 OperandForm *rep_var_to_operand(const char *encoding, OperandForm &oper, FormDict &globals) {
2830 OperandForm *op = NULL;
2831 // Check for replacement variable
2832 if( *encoding == '$' ) {
2833 // Replacement variable
2834 const char *rep_var = encoding + 1;
2835 // Lookup replacement variable, rep_var, in operand's component list
2836 const Component *comp = oper._components.search(rep_var);
2837 assert( comp != NULL, "Replacement variable not found in components");
2838 // Lookup operand form for replacement variable's type
2839 const char *type = comp->_type;
2840 Form *form = (Form*)globals[type];
2841 assert( form != NULL, "Replacement variable's type not found");
2842 op = form->is_operand();
2843 assert( op, "Attempting to emit a non-register or non-constant");
2844 }
2846 return op;
2847 }
2849 int rep_var_to_constant_index(const char *encoding, OperandForm &oper, FormDict &globals) {
2850 int idx = -1;
2851 // Check for replacement variable
2852 if( *encoding == '$' ) {
2853 // Replacement variable
2854 const char *rep_var = encoding + 1;
2855 // Lookup replacement variable, rep_var, in operand's component list
2856 const Component *comp = oper._components.search(rep_var);
2857 assert( comp != NULL, "Replacement variable not found in components");
2858 // Lookup operand form for replacement variable's type
2859 const char *type = comp->_type;
2860 Form *form = (Form*)globals[type];
2861 assert( form != NULL, "Replacement variable's type not found");
2862 OperandForm *op = form->is_operand();
2863 assert( op, "Attempting to emit a non-register or non-constant");
2864 // Check that this is a constant and find constant's index:
2865 if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2866 idx = oper.constant_position(globals, comp);
2867 }
2868 }
2870 return idx;
2871 }
2873 bool is_regI(const char *encoding, OperandForm &oper, FormDict &globals ) {
2874 bool is_regI = false;
2876 OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2877 if( op != NULL ) {
2878 // Check that this is a register
2879 if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2880 // Register
2881 const char* ideal = op->ideal_type(globals);
2882 is_regI = (ideal && (op->ideal_to_Reg_type(ideal) == Form::idealI));
2883 }
2884 }
2886 return is_regI;
2887 }
2889 bool is_conP(const char *encoding, OperandForm &oper, FormDict &globals ) {
2890 bool is_conP = false;
2892 OperandForm *op = rep_var_to_operand(encoding, oper, globals);
2893 if( op != NULL ) {
2894 // Check that this is a constant pointer
2895 if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2896 // Constant
2897 Form::DataType dtype = op->is_base_constant(globals);
2898 is_conP = (dtype == Form::idealP);
2899 }
2900 }
2902 return is_conP;
2903 }
2906 // Define a MachOper interface methods
2907 void ArchDesc::define_oper_interface(FILE *fp, OperandForm &oper, FormDict &globals,
2908 const char *name, const char *encoding) {
2909 bool emit_position = false;
2910 int position = -1;
2912 fprintf(fp," virtual int %s", name);
2913 // Generate access method for base, index, scale, disp, ...
2914 if( (strcmp(name,"base") == 0) || (strcmp(name,"index") == 0) ) {
2915 fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2916 emit_position = true;
2917 } else if ( (strcmp(name,"disp") == 0) ) {
2918 fprintf(fp,"(PhaseRegAlloc *ra_, const Node *node, int idx) const { \n");
2919 } else {
2920 fprintf(fp, "() const {\n");
2921 }
2923 // Check for hexadecimal value OR replacement variable
2924 if( *encoding == '$' ) {
2925 // Replacement variable
2926 const char *rep_var = encoding + 1;
2927 fprintf(fp," // Replacement variable: %s\n", encoding+1);
2928 // Lookup replacement variable, rep_var, in operand's component list
2929 const Component *comp = oper._components.search(rep_var);
2930 assert( comp != NULL, "Replacement variable not found in components");
2931 // Lookup operand form for replacement variable's type
2932 const char *type = comp->_type;
2933 Form *form = (Form*)globals[type];
2934 assert( form != NULL, "Replacement variable's type not found");
2935 OperandForm *op = form->is_operand();
2936 assert( op, "Attempting to emit a non-register or non-constant");
2937 // Check that this is a register or a constant and generate code:
2938 if ( (op->_matrule && op->_matrule->is_base_register(globals)) ) {
2939 // Register
2940 int idx_offset = oper.register_position( globals, rep_var);
2941 position = idx_offset;
2942 fprintf(fp," return (int)ra_->get_encode(node->in(idx");
2943 if ( idx_offset > 0 ) fprintf(fp, "+%d",idx_offset);
2944 fprintf(fp,"));\n");
2945 } else if ( op->ideal_to_sReg_type(op->_ident) != Form::none ) {
2946 // StackSlot for an sReg comes either from input node or from self, when idx==0
2947 fprintf(fp," if( idx != 0 ) {\n");
2948 fprintf(fp," // Access stack offset (register number) for input operand\n");
2949 fprintf(fp," return ra_->reg2offset(ra_->get_reg_first(node->in(idx)));/* sReg */\n");
2950 fprintf(fp," }\n");
2951 fprintf(fp," // Access stack offset (register number) from myself\n");
2952 fprintf(fp," return ra_->reg2offset(ra_->get_reg_first(node));/* sReg */\n");
2953 } else if (op->_matrule && op->_matrule->is_base_constant(globals)) {
2954 // Constant
2955 // Check which constant this name maps to: _c0, _c1, ..., _cn
2956 const int idx = oper.constant_position(globals, comp);
2957 assert( idx != -1, "Constant component not found in operand");
2958 // Output code for this constant, type dependent.
2959 fprintf(fp," return (int)" );
2960 oper.access_constant(fp, globals, (uint)idx /* , const_type */);
2961 fprintf(fp,";\n");
2962 } else {
2963 assert( false, "Attempting to emit a non-register or non-constant");
2964 }
2965 }
2966 else if( *encoding == '0' && *(encoding+1) == 'x' ) {
2967 // Hex value
2968 fprintf(fp," return %s;\n", encoding);
2969 } else {
2970 globalAD->syntax_err(oper._linenum, "In operand %s: Do not support this encode constant: '%s' for %s.",
2971 oper._ident, encoding, name);
2972 assert( false, "Do not support octal or decimal encode constants");
2973 }
2974 fprintf(fp," }\n");
2976 if( emit_position && (position != -1) && (oper.num_edges(globals) > 0) ) {
2977 fprintf(fp," virtual int %s_position() const { return %d; }\n", name, position);
2978 MemInterface *mem_interface = oper._interface->is_MemInterface();
2979 const char *base = mem_interface->_base;
2980 const char *disp = mem_interface->_disp;
2981 if( emit_position && (strcmp(name,"base") == 0)
2982 && base != NULL && is_regI(base, oper, globals)
2983 && disp != NULL && is_conP(disp, oper, globals) ) {
2984 // Found a memory access using a constant pointer for a displacement
2985 // and a base register containing an integer offset.
2986 // In this case the base and disp are reversed with respect to what
2987 // is expected by MachNode::get_base_and_disp() and MachNode::adr_type().
2988 // Provide a non-NULL return for disp_as_type() that will allow adr_type()
2989 // to correctly compute the access type for alias analysis.
2990 //
2991 // See BugId 4796752, operand indOffset32X in i486.ad
2992 int idx = rep_var_to_constant_index(disp, oper, globals);
2993 fprintf(fp," virtual const TypePtr *disp_as_type() const { return _c%d; }\n", idx);
2994 }
2995 }
2996 }
2998 //
2999 // Construct the method to copy _idx, inputs and operands to new node.
3000 static void define_fill_new_machnode(bool used, FILE *fp_cpp) {
3001 fprintf(fp_cpp, "\n");
3002 fprintf(fp_cpp, "// Copy _idx, inputs and operands to new node\n");
3003 fprintf(fp_cpp, "void MachNode::fill_new_machnode( MachNode* node, Compile* C) const {\n");
3004 if( !used ) {
3005 fprintf(fp_cpp, " // This architecture does not have cisc or short branch instructions\n");
3006 fprintf(fp_cpp, " ShouldNotCallThis();\n");
3007 fprintf(fp_cpp, "}\n");
3008 } else {
3009 // New node must use same node index for access through allocator's tables
3010 fprintf(fp_cpp, " // New node must use same node index\n");
3011 fprintf(fp_cpp, " node->set_idx( _idx );\n");
3012 // Copy machine-independent inputs
3013 fprintf(fp_cpp, " // Copy machine-independent inputs\n");
3014 fprintf(fp_cpp, " for( uint j = 0; j < req(); j++ ) {\n");
3015 fprintf(fp_cpp, " node->add_req(in(j));\n");
3016 fprintf(fp_cpp, " }\n");
3017 // Copy machine operands to new MachNode
3018 fprintf(fp_cpp, " // Copy my operands, except for cisc position\n");
3019 fprintf(fp_cpp, " int nopnds = num_opnds();\n");
3020 fprintf(fp_cpp, " assert( node->num_opnds() == (uint)nopnds, \"Must have same number of operands\");\n");
3021 fprintf(fp_cpp, " MachOper **to = node->_opnds;\n");
3022 fprintf(fp_cpp, " for( int i = 0; i < nopnds; i++ ) {\n");
3023 fprintf(fp_cpp, " if( i != cisc_operand() ) \n");
3024 fprintf(fp_cpp, " to[i] = _opnds[i]->clone(C);\n");
3025 fprintf(fp_cpp, " }\n");
3026 fprintf(fp_cpp, "}\n");
3027 }
3028 fprintf(fp_cpp, "\n");
3029 }
3031 //------------------------------defineClasses----------------------------------
3032 // Define members of MachNode and MachOper classes based on
3033 // operand and instruction lists
3034 void ArchDesc::defineClasses(FILE *fp) {
3036 // Define the contents of an array containing the machine register names
3037 defineRegNames(fp, _register);
3038 // Define an array containing the machine register encoding values
3039 defineRegEncodes(fp, _register);
3040 // Generate an enumeration of user-defined register classes
3041 // and a list of register masks, one for each class.
3042 // Only define the RegMask value objects in the expand file.
3043 // Declare each as an extern const RegMask ...; in ad_<arch>.hpp
3044 declare_register_masks(_HPP_file._fp);
3045 // build_register_masks(fp);
3046 build_register_masks(_CPP_EXPAND_file._fp);
3047 // Define the pipe_classes
3048 build_pipe_classes(_CPP_PIPELINE_file._fp);
3050 // Generate Machine Classes for each operand defined in AD file
3051 fprintf(fp,"\n");
3052 fprintf(fp,"\n");
3053 fprintf(fp,"//------------------Define classes derived from MachOper---------------------\n");
3054 // Iterate through all operands
3055 _operands.reset();
3056 OperandForm *oper;
3057 for( ; (oper = (OperandForm*)_operands.iter()) != NULL; ) {
3058 // Ensure this is a machine-world instruction
3059 if ( oper->ideal_only() ) continue;
3060 // !!!!!
3061 // The declaration of labelOper is in machine-independent file: machnode
3062 if ( strcmp(oper->_ident,"label") == 0 ) {
3063 defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3065 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper->_ident);
3066 fprintf(fp," return new (C) %sOper(_label, _block_num);\n", oper->_ident);
3067 fprintf(fp,"}\n");
3069 fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3070 oper->_ident, machOperEnum(oper->_ident));
3071 // // Currently all XXXOper::Hash() methods are identical (990820)
3072 // define_hash(fp, oper->_ident);
3073 // // Currently all XXXOper::Cmp() methods are identical (990820)
3074 // define_cmp(fp, oper->_ident);
3075 fprintf(fp,"\n");
3077 continue;
3078 }
3080 // The declaration of methodOper is in machine-independent file: machnode
3081 if ( strcmp(oper->_ident,"method") == 0 ) {
3082 defineIn_RegMask(_CPP_MISC_file._fp, _globalNames, *oper);
3084 fprintf(fp,"MachOper *%sOper::clone(Compile* C) const {\n", oper->_ident);
3085 fprintf(fp," return new (C) %sOper(_method);\n", oper->_ident);
3086 fprintf(fp,"}\n");
3088 fprintf(fp,"uint %sOper::opcode() const { return %s; }\n",
3089 oper->_ident, machOperEnum(oper->_ident));
3090 // // Currently all XXXOper::Hash() methods are identical (990820)
3091 // define_hash(fp, oper->_ident);
3092 // // Currently all XXXOper::Cmp() methods are identical (990820)
3093 // define_cmp(fp, oper->_ident);
3094 fprintf(fp,"\n");
3096 continue;
3097 }
3099 defineIn_RegMask(fp, _globalNames, *oper);
3100 defineClone(_CPP_CLONE_file._fp, _globalNames, *oper);
3101 // // Currently all XXXOper::Hash() methods are identical (990820)
3102 // define_hash(fp, oper->_ident);
3103 // // Currently all XXXOper::Cmp() methods are identical (990820)
3104 // define_cmp(fp, oper->_ident);
3106 // side-call to generate output that used to be in the header file:
3107 extern void gen_oper_format(FILE *fp, FormDict &globals, OperandForm &oper, bool for_c_file);
3108 gen_oper_format(_CPP_FORMAT_file._fp, _globalNames, *oper, true);
3110 }
3113 // Generate Machine Classes for each instruction defined in AD file
3114 fprintf(fp,"//------------------Define members for classes derived from MachNode----------\n");
3115 // Output the definitions for out_RegMask() // & kill_RegMask()
3116 _instructions.reset();
3117 InstructForm *instr;
3118 MachNodeForm *machnode;
3119 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3120 // Ensure this is a machine-world instruction
3121 if ( instr->ideal_only() ) continue;
3123 defineOut_RegMask(_CPP_MISC_file._fp, instr->_ident, reg_mask(*instr));
3124 }
3126 bool used = false;
3127 // Output the definitions for expand rules & peephole rules
3128 _instructions.reset();
3129 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3130 // Ensure this is a machine-world instruction
3131 if ( instr->ideal_only() ) continue;
3132 // If there are multiple defs/kills, or an explicit expand rule, build rule
3133 if( instr->expands() || instr->needs_projections() ||
3134 instr->has_temps() ||
3135 instr->is_mach_constant() ||
3136 instr->needs_constant_base() ||
3137 instr->_matrule != NULL &&
3138 instr->num_opnds() != instr->num_unique_opnds() )
3139 defineExpand(_CPP_EXPAND_file._fp, instr);
3140 // If there is an explicit peephole rule, build it
3141 if ( instr->peepholes() )
3142 definePeephole(_CPP_PEEPHOLE_file._fp, instr);
3144 // Output code to convert to the cisc version, if applicable
3145 used |= instr->define_cisc_version(*this, fp);
3147 // Output code to convert to the short branch version, if applicable
3148 used |= instr->define_short_branch_methods(*this, fp);
3149 }
3151 // Construct the method called by cisc_version() to copy inputs and operands.
3152 define_fill_new_machnode(used, fp);
3154 // Output the definitions for labels
3155 _instructions.reset();
3156 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3157 // Ensure this is a machine-world instruction
3158 if ( instr->ideal_only() ) continue;
3160 // Access the fields for operand Label
3161 int label_position = instr->label_position();
3162 if( label_position != -1 ) {
3163 // Set the label
3164 fprintf(fp,"void %sNode::label_set( Label* label, uint block_num ) {\n", instr->_ident);
3165 fprintf(fp," labelOper* oper = (labelOper*)(opnd_array(%d));\n",
3166 label_position );
3167 fprintf(fp," oper->_label = label;\n");
3168 fprintf(fp," oper->_block_num = block_num;\n");
3169 fprintf(fp,"}\n");
3170 // Save the label
3171 fprintf(fp,"void %sNode::save_label( Label** label, uint* block_num ) {\n", instr->_ident);
3172 fprintf(fp," labelOper* oper = (labelOper*)(opnd_array(%d));\n",
3173 label_position );
3174 fprintf(fp," *label = oper->_label;\n");
3175 fprintf(fp," *block_num = oper->_block_num;\n");
3176 fprintf(fp,"}\n");
3177 }
3178 }
3180 // Output the definitions for methods
3181 _instructions.reset();
3182 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3183 // Ensure this is a machine-world instruction
3184 if ( instr->ideal_only() ) continue;
3186 // Access the fields for operand Label
3187 int method_position = instr->method_position();
3188 if( method_position != -1 ) {
3189 // Access the method's address
3190 fprintf(fp,"void %sNode::method_set( intptr_t method ) {\n", instr->_ident);
3191 fprintf(fp," ((methodOper*)opnd_array(%d))->_method = method;\n",
3192 method_position );
3193 fprintf(fp,"}\n");
3194 fprintf(fp,"\n");
3195 }
3196 }
3198 // Define this instruction's number of relocation entries, base is '0'
3199 _instructions.reset();
3200 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
3201 // Output the definition for number of relocation entries
3202 uint reloc_size = instr->reloc(_globalNames);
3203 if ( reloc_size != 0 ) {
3204 fprintf(fp,"int %sNode::reloc() const {\n", instr->_ident);
3205 fprintf(fp," return %d;\n", reloc_size);
3206 fprintf(fp,"}\n");
3207 fprintf(fp,"\n");
3208 }
3209 }
3210 fprintf(fp,"\n");
3212 // Output the definitions for code generation
3213 //
3214 // address ___Node::emit(address ptr, PhaseRegAlloc *ra_) const {
3215 // // ... encoding defined by user
3216 // return ptr;
3217 // }
3218 //
3219 _instructions.reset();
3220 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3221 // Ensure this is a machine-world instruction
3222 if ( instr->ideal_only() ) continue;
3224 if (instr->_insencode) {
3225 if (instr->postalloc_expands()) {
3226 // Don't write this to _CPP_EXPAND_file, as the code generated calls C-code
3227 // from code sections in ad file that is dumped to fp.
3228 define_postalloc_expand(fp, *instr);
3229 } else {
3230 defineEmit(fp, *instr);
3231 }
3232 }
3233 if (instr->is_mach_constant()) defineEvalConstant(fp, *instr);
3234 if (instr->_size) defineSize (fp, *instr);
3236 // side-call to generate output that used to be in the header file:
3237 extern void gen_inst_format(FILE *fp, FormDict &globals, InstructForm &oper, bool for_c_file);
3238 gen_inst_format(_CPP_FORMAT_file._fp, _globalNames, *instr, true);
3239 }
3241 // Output the definitions for alias analysis
3242 _instructions.reset();
3243 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3244 // Ensure this is a machine-world instruction
3245 if ( instr->ideal_only() ) continue;
3247 // Analyze machine instructions that either USE or DEF memory.
3248 int memory_operand = instr->memory_operand(_globalNames);
3249 // Some guys kill all of memory
3250 if ( instr->is_wide_memory_kill(_globalNames) ) {
3251 memory_operand = InstructForm::MANY_MEMORY_OPERANDS;
3252 }
3254 if ( memory_operand != InstructForm::NO_MEMORY_OPERAND ) {
3255 if( memory_operand == InstructForm::MANY_MEMORY_OPERANDS ) {
3256 fprintf(fp,"const TypePtr *%sNode::adr_type() const { return TypePtr::BOTTOM; }\n", instr->_ident);
3257 fprintf(fp,"const MachOper* %sNode::memory_operand() const { return (MachOper*)-1; }\n", instr->_ident);
3258 } else {
3259 fprintf(fp,"const MachOper* %sNode::memory_operand() const { return _opnds[%d]; }\n", instr->_ident, memory_operand);
3260 }
3261 }
3262 }
3264 // Get the length of the longest identifier
3265 int max_ident_len = 0;
3266 _instructions.reset();
3268 for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3269 if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3270 int ident_len = (int)strlen(instr->_ident);
3271 if( max_ident_len < ident_len )
3272 max_ident_len = ident_len;
3273 }
3274 }
3276 // Emit specifically for Node(s)
3277 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3278 max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3279 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return %s; }\n",
3280 max_ident_len, "Node", _pipeline ? "(&pipeline_class_Zero_Instructions)" : "NULL");
3281 fprintf(_CPP_PIPELINE_file._fp, "\n");
3283 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline_class() { return %s; }\n",
3284 max_ident_len, "MachNode", _pipeline ? "(&pipeline_class_Unknown_Instructions)" : "NULL");
3285 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*s::pipeline() const { return pipeline_class(); }\n",
3286 max_ident_len, "MachNode");
3287 fprintf(_CPP_PIPELINE_file._fp, "\n");
3289 // Output the definitions for machine node specific pipeline data
3290 _machnodes.reset();
3292 for ( ; (machnode = (MachNodeForm*)_machnodes.iter()) != NULL; ) {
3293 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3294 machnode->_ident, ((class PipeClassForm *)_pipeline->_classdict[machnode->_machnode_pipe])->_num);
3295 }
3297 fprintf(_CPP_PIPELINE_file._fp, "\n");
3299 // Output the definitions for instruction pipeline static data references
3300 _instructions.reset();
3302 for ( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
3303 if (instr->_ins_pipe && _pipeline->_classlist.search(instr->_ins_pipe)) {
3304 fprintf(_CPP_PIPELINE_file._fp, "\n");
3305 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline_class() { return (&pipeline_class_%03d); }\n",
3306 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3307 fprintf(_CPP_PIPELINE_file._fp, "const Pipeline * %*sNode::pipeline() const { return (&pipeline_class_%03d); }\n",
3308 max_ident_len, instr->_ident, ((class PipeClassForm *)_pipeline->_classdict[instr->_ins_pipe])->_num);
3309 }
3310 }
3311 }
3314 // -------------------------------- maps ------------------------------------
3316 // Information needed to generate the ReduceOp mapping for the DFA
3317 class OutputReduceOp : public OutputMap {
3318 public:
3319 OutputReduceOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3320 : OutputMap(hpp, cpp, globals, AD, "reduceOp") {};
3322 void declaration() { fprintf(_hpp, "extern const int reduceOp[];\n"); }
3323 void definition() { fprintf(_cpp, "const int reduceOp[] = {\n"); }
3324 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3325 OutputMap::closing();
3326 }
3327 void map(OpClassForm &opc) {
3328 const char *reduce = opc._ident;
3329 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3330 else fprintf(_cpp, " 0");
3331 }
3332 void map(OperandForm &oper) {
3333 // Most operands without match rules, e.g. eFlagsReg, do not have a result operand
3334 const char *reduce = (oper._matrule ? oper.reduce_result() : NULL);
3335 // operand stackSlot does not have a match rule, but produces a stackSlot
3336 if( oper.is_user_name_for_sReg() != Form::none ) reduce = oper.reduce_result();
3337 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3338 else fprintf(_cpp, " 0");
3339 }
3340 void map(InstructForm &inst) {
3341 const char *reduce = (inst._matrule ? inst.reduce_result() : NULL);
3342 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3343 else fprintf(_cpp, " 0");
3344 }
3345 void map(char *reduce) {
3346 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3347 else fprintf(_cpp, " 0");
3348 }
3349 };
3351 // Information needed to generate the LeftOp mapping for the DFA
3352 class OutputLeftOp : public OutputMap {
3353 public:
3354 OutputLeftOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3355 : OutputMap(hpp, cpp, globals, AD, "leftOp") {};
3357 void declaration() { fprintf(_hpp, "extern const int leftOp[];\n"); }
3358 void definition() { fprintf(_cpp, "const int leftOp[] = {\n"); }
3359 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3360 OutputMap::closing();
3361 }
3362 void map(OpClassForm &opc) { fprintf(_cpp, " 0"); }
3363 void map(OperandForm &oper) {
3364 const char *reduce = oper.reduce_left(_globals);
3365 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3366 else fprintf(_cpp, " 0");
3367 }
3368 void map(char *name) {
3369 const char *reduce = _AD.reduceLeft(name);
3370 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3371 else fprintf(_cpp, " 0");
3372 }
3373 void map(InstructForm &inst) {
3374 const char *reduce = inst.reduce_left(_globals);
3375 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3376 else fprintf(_cpp, " 0");
3377 }
3378 };
3381 // Information needed to generate the RightOp mapping for the DFA
3382 class OutputRightOp : public OutputMap {
3383 public:
3384 OutputRightOp(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3385 : OutputMap(hpp, cpp, globals, AD, "rightOp") {};
3387 void declaration() { fprintf(_hpp, "extern const int rightOp[];\n"); }
3388 void definition() { fprintf(_cpp, "const int rightOp[] = {\n"); }
3389 void closing() { fprintf(_cpp, " 0 // no trailing comma\n");
3390 OutputMap::closing();
3391 }
3392 void map(OpClassForm &opc) { fprintf(_cpp, " 0"); }
3393 void map(OperandForm &oper) {
3394 const char *reduce = oper.reduce_right(_globals);
3395 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3396 else fprintf(_cpp, " 0");
3397 }
3398 void map(char *name) {
3399 const char *reduce = _AD.reduceRight(name);
3400 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3401 else fprintf(_cpp, " 0");
3402 }
3403 void map(InstructForm &inst) {
3404 const char *reduce = inst.reduce_right(_globals);
3405 if( reduce ) fprintf(_cpp, " %s_rule", reduce);
3406 else fprintf(_cpp, " 0");
3407 }
3408 };
3411 // Information needed to generate the Rule names for the DFA
3412 class OutputRuleName : public OutputMap {
3413 public:
3414 OutputRuleName(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3415 : OutputMap(hpp, cpp, globals, AD, "ruleName") {};
3417 void declaration() { fprintf(_hpp, "extern const char *ruleName[];\n"); }
3418 void definition() { fprintf(_cpp, "const char *ruleName[] = {\n"); }
3419 void closing() { fprintf(_cpp, " \"invalid rule name\" // no trailing comma\n");
3420 OutputMap::closing();
3421 }
3422 void map(OpClassForm &opc) { fprintf(_cpp, " \"%s\"", _AD.machOperEnum(opc._ident) ); }
3423 void map(OperandForm &oper) { fprintf(_cpp, " \"%s\"", _AD.machOperEnum(oper._ident) ); }
3424 void map(char *name) { fprintf(_cpp, " \"%s\"", name ? name : "0"); }
3425 void map(InstructForm &inst){ fprintf(_cpp, " \"%s\"", inst._ident ? inst._ident : "0"); }
3426 };
3429 // Information needed to generate the swallowed mapping for the DFA
3430 class OutputSwallowed : public OutputMap {
3431 public:
3432 OutputSwallowed(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3433 : OutputMap(hpp, cpp, globals, AD, "swallowed") {};
3435 void declaration() { fprintf(_hpp, "extern const bool swallowed[];\n"); }
3436 void definition() { fprintf(_cpp, "const bool swallowed[] = {\n"); }
3437 void closing() { fprintf(_cpp, " false // no trailing comma\n");
3438 OutputMap::closing();
3439 }
3440 void map(OperandForm &oper) { // Generate the entry for this opcode
3441 const char *swallowed = oper.swallowed(_globals) ? "true" : "false";
3442 fprintf(_cpp, " %s", swallowed);
3443 }
3444 void map(OpClassForm &opc) { fprintf(_cpp, " false"); }
3445 void map(char *name) { fprintf(_cpp, " false"); }
3446 void map(InstructForm &inst){ fprintf(_cpp, " false"); }
3447 };
3450 // Information needed to generate the decision array for instruction chain rule
3451 class OutputInstChainRule : public OutputMap {
3452 public:
3453 OutputInstChainRule(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
3454 : OutputMap(hpp, cpp, globals, AD, "instruction_chain_rule") {};
3456 void declaration() { fprintf(_hpp, "extern const bool instruction_chain_rule[];\n"); }
3457 void definition() { fprintf(_cpp, "const bool instruction_chain_rule[] = {\n"); }
3458 void closing() { fprintf(_cpp, " false // no trailing comma\n");
3459 OutputMap::closing();
3460 }
3461 void map(OpClassForm &opc) { fprintf(_cpp, " false"); }
3462 void map(OperandForm &oper) { fprintf(_cpp, " false"); }
3463 void map(char *name) { fprintf(_cpp, " false"); }
3464 void map(InstructForm &inst) { // Check for simple chain rule
3465 const char *chain = inst.is_simple_chain_rule(_globals) ? "true" : "false";
3466 fprintf(_cpp, " %s", chain);
3467 }
3468 };
3471 //---------------------------build_map------------------------------------
3472 // Build mapping from enumeration for densely packed operands
3473 // TO result and child types.
3474 void ArchDesc::build_map(OutputMap &map) {
3475 FILE *fp_hpp = map.decl_file();
3476 FILE *fp_cpp = map.def_file();
3477 int idx = 0;
3478 OperandForm *op;
3479 OpClassForm *opc;
3480 InstructForm *inst;
3482 // Construct this mapping
3483 map.declaration();
3484 fprintf(fp_cpp,"\n");
3485 map.definition();
3487 // Output the mapping for operands
3488 map.record_position(OutputMap::BEGIN_OPERANDS, idx );
3489 _operands.reset();
3490 for(; (op = (OperandForm*)_operands.iter()) != NULL; ) {
3491 // Ensure this is a machine-world instruction
3492 if ( op->ideal_only() ) continue;
3494 // Generate the entry for this opcode
3495 fprintf(fp_cpp, " /* %4d */", idx); map.map(*op); fprintf(fp_cpp, ",\n");
3496 ++idx;
3497 };
3498 fprintf(fp_cpp, " // last operand\n");
3500 // Place all user-defined operand classes into the mapping
3501 map.record_position(OutputMap::BEGIN_OPCLASSES, idx );
3502 _opclass.reset();
3503 for(; (opc = (OpClassForm*)_opclass.iter()) != NULL; ) {
3504 fprintf(fp_cpp, " /* %4d */", idx); map.map(*opc); fprintf(fp_cpp, ",\n");
3505 ++idx;
3506 };
3507 fprintf(fp_cpp, " // last operand class\n");
3509 // Place all internally defined operands into the mapping
3510 map.record_position(OutputMap::BEGIN_INTERNALS, idx );
3511 _internalOpNames.reset();
3512 char *name = NULL;
3513 for(; (name = (char *)_internalOpNames.iter()) != NULL; ) {
3514 fprintf(fp_cpp, " /* %4d */", idx); map.map(name); fprintf(fp_cpp, ",\n");
3515 ++idx;
3516 };
3517 fprintf(fp_cpp, " // last internally defined operand\n");
3519 // Place all user-defined instructions into the mapping
3520 if( map.do_instructions() ) {
3521 map.record_position(OutputMap::BEGIN_INSTRUCTIONS, idx );
3522 // Output all simple instruction chain rules first
3523 map.record_position(OutputMap::BEGIN_INST_CHAIN_RULES, idx );
3524 {
3525 _instructions.reset();
3526 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3527 // Ensure this is a machine-world instruction
3528 if ( inst->ideal_only() ) continue;
3529 if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3530 if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3532 fprintf(fp_cpp, " /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3533 ++idx;
3534 };
3535 map.record_position(OutputMap::BEGIN_REMATERIALIZE, idx );
3536 _instructions.reset();
3537 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3538 // Ensure this is a machine-world instruction
3539 if ( inst->ideal_only() ) continue;
3540 if ( ! inst->is_simple_chain_rule(_globalNames) ) continue;
3541 if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3543 fprintf(fp_cpp, " /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3544 ++idx;
3545 };
3546 map.record_position(OutputMap::END_INST_CHAIN_RULES, idx );
3547 }
3548 // Output all instructions that are NOT simple chain rules
3549 {
3550 _instructions.reset();
3551 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3552 // Ensure this is a machine-world instruction
3553 if ( inst->ideal_only() ) continue;
3554 if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3555 if ( ! inst->rematerialize(_globalNames, get_registers()) ) continue;
3557 fprintf(fp_cpp, " /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3558 ++idx;
3559 };
3560 map.record_position(OutputMap::END_REMATERIALIZE, idx );
3561 _instructions.reset();
3562 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
3563 // Ensure this is a machine-world instruction
3564 if ( inst->ideal_only() ) continue;
3565 if ( inst->is_simple_chain_rule(_globalNames) ) continue;
3566 if ( inst->rematerialize(_globalNames, get_registers()) ) continue;
3568 fprintf(fp_cpp, " /* %4d */", idx); map.map(*inst); fprintf(fp_cpp, ",\n");
3569 ++idx;
3570 };
3571 }
3572 fprintf(fp_cpp, " // last instruction\n");
3573 map.record_position(OutputMap::END_INSTRUCTIONS, idx );
3574 }
3575 // Finish defining table
3576 map.closing();
3577 };
3580 // Helper function for buildReduceMaps
3581 char reg_save_policy(const char *calling_convention) {
3582 char callconv;
3584 if (!strcmp(calling_convention, "NS")) callconv = 'N';
3585 else if (!strcmp(calling_convention, "SOE")) callconv = 'E';
3586 else if (!strcmp(calling_convention, "SOC")) callconv = 'C';
3587 else if (!strcmp(calling_convention, "AS")) callconv = 'A';
3588 else callconv = 'Z';
3590 return callconv;
3591 }
3593 void ArchDesc::generate_needs_clone_jvms(FILE *fp_cpp) {
3594 fprintf(fp_cpp, "bool Compile::needs_clone_jvms() { return %s; }\n\n",
3595 _needs_clone_jvms ? "true" : "false");
3596 }
3598 //---------------------------generate_assertion_checks-------------------
3599 void ArchDesc::generate_adlc_verification(FILE *fp_cpp) {
3600 fprintf(fp_cpp, "\n");
3602 fprintf(fp_cpp, "#ifndef PRODUCT\n");
3603 fprintf(fp_cpp, "void Compile::adlc_verification() {\n");
3604 globalDefs().print_asserts(fp_cpp);
3605 fprintf(fp_cpp, "}\n");
3606 fprintf(fp_cpp, "#endif\n");
3607 fprintf(fp_cpp, "\n");
3608 }
3610 //---------------------------addSourceBlocks-----------------------------
3611 void ArchDesc::addSourceBlocks(FILE *fp_cpp) {
3612 if (_source.count() > 0)
3613 _source.output(fp_cpp);
3615 generate_adlc_verification(fp_cpp);
3616 }
3617 //---------------------------addHeaderBlocks-----------------------------
3618 void ArchDesc::addHeaderBlocks(FILE *fp_hpp) {
3619 if (_header.count() > 0)
3620 _header.output(fp_hpp);
3621 }
3622 //-------------------------addPreHeaderBlocks----------------------------
3623 void ArchDesc::addPreHeaderBlocks(FILE *fp_hpp) {
3624 // Output #defines from definition block
3625 globalDefs().print_defines(fp_hpp);
3627 if (_pre_header.count() > 0)
3628 _pre_header.output(fp_hpp);
3629 }
3631 //---------------------------buildReduceMaps-----------------------------
3632 // Build mapping from enumeration for densely packed operands
3633 // TO result and child types.
3634 void ArchDesc::buildReduceMaps(FILE *fp_hpp, FILE *fp_cpp) {
3635 RegDef *rdef;
3636 RegDef *next;
3638 // The emit bodies currently require functions defined in the source block.
3640 // Build external declarations for mappings
3641 fprintf(fp_hpp, "\n");
3642 fprintf(fp_hpp, "extern const char register_save_policy[];\n");
3643 fprintf(fp_hpp, "extern const char c_reg_save_policy[];\n");
3644 fprintf(fp_hpp, "extern const int register_save_type[];\n");
3645 fprintf(fp_hpp, "\n");
3647 // Construct Save-Policy array
3648 fprintf(fp_cpp, "// Map from machine-independent register number to register_save_policy\n");
3649 fprintf(fp_cpp, "const char register_save_policy[] = {\n");
3650 _register->reset_RegDefs();
3651 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3652 next = _register->iter_RegDefs();
3653 char policy = reg_save_policy(rdef->_callconv);
3654 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3655 fprintf(fp_cpp, " '%c'%s // %s\n", policy, comma, rdef->_regname);
3656 }
3657 fprintf(fp_cpp, "};\n\n");
3659 // Construct Native Save-Policy array
3660 fprintf(fp_cpp, "// Map from machine-independent register number to c_reg_save_policy\n");
3661 fprintf(fp_cpp, "const char c_reg_save_policy[] = {\n");
3662 _register->reset_RegDefs();
3663 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3664 next = _register->iter_RegDefs();
3665 char policy = reg_save_policy(rdef->_c_conv);
3666 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3667 fprintf(fp_cpp, " '%c'%s // %s\n", policy, comma, rdef->_regname);
3668 }
3669 fprintf(fp_cpp, "};\n\n");
3671 // Construct Register Save Type array
3672 fprintf(fp_cpp, "// Map from machine-independent register number to register_save_type\n");
3673 fprintf(fp_cpp, "const int register_save_type[] = {\n");
3674 _register->reset_RegDefs();
3675 for( rdef = _register->iter_RegDefs(); rdef != NULL; rdef = next ) {
3676 next = _register->iter_RegDefs();
3677 const char *comma = (next != NULL) ? "," : " // no trailing comma";
3678 fprintf(fp_cpp, " %s%s\n", rdef->_idealtype, comma);
3679 }
3680 fprintf(fp_cpp, "};\n\n");
3682 // Construct the table for reduceOp
3683 OutputReduceOp output_reduce_op(fp_hpp, fp_cpp, _globalNames, *this);
3684 build_map(output_reduce_op);
3685 // Construct the table for leftOp
3686 OutputLeftOp output_left_op(fp_hpp, fp_cpp, _globalNames, *this);
3687 build_map(output_left_op);
3688 // Construct the table for rightOp
3689 OutputRightOp output_right_op(fp_hpp, fp_cpp, _globalNames, *this);
3690 build_map(output_right_op);
3691 // Construct the table of rule names
3692 OutputRuleName output_rule_name(fp_hpp, fp_cpp, _globalNames, *this);
3693 build_map(output_rule_name);
3694 // Construct the boolean table for subsumed operands
3695 OutputSwallowed output_swallowed(fp_hpp, fp_cpp, _globalNames, *this);
3696 build_map(output_swallowed);
3697 // // // Preserve in case we decide to use this table instead of another
3698 //// Construct the boolean table for instruction chain rules
3699 //OutputInstChainRule output_inst_chain(fp_hpp, fp_cpp, _globalNames, *this);
3700 //build_map(output_inst_chain);
3702 }
3705 //---------------------------buildMachOperGenerator---------------------------
3707 // Recurse through match tree, building path through corresponding state tree,
3708 // Until we reach the constant we are looking for.
3709 static void path_to_constant(FILE *fp, FormDict &globals,
3710 MatchNode *mnode, uint idx) {
3711 if ( ! mnode) return;
3713 unsigned position = 0;
3714 const char *result = NULL;
3715 const char *name = NULL;
3716 const char *optype = NULL;
3718 // Base Case: access constant in ideal node linked to current state node
3719 // Each type of constant has its own access function
3720 if ( (mnode->_lChild == NULL) && (mnode->_rChild == NULL)
3721 && mnode->base_operand(position, globals, result, name, optype) ) {
3722 if ( strcmp(optype,"ConI") == 0 ) {
3723 fprintf(fp, "_leaf->get_int()");
3724 } else if ( (strcmp(optype,"ConP") == 0) ) {
3725 fprintf(fp, "_leaf->bottom_type()->is_ptr()");
3726 } else if ( (strcmp(optype,"ConN") == 0) ) {
3727 fprintf(fp, "_leaf->bottom_type()->is_narrowoop()");
3728 } else if ( (strcmp(optype,"ConNKlass") == 0) ) {
3729 fprintf(fp, "_leaf->bottom_type()->is_narrowklass()");
3730 } else if ( (strcmp(optype,"ConF") == 0) ) {
3731 fprintf(fp, "_leaf->getf()");
3732 } else if ( (strcmp(optype,"ConD") == 0) ) {
3733 fprintf(fp, "_leaf->getd()");
3734 } else if ( (strcmp(optype,"ConL") == 0) ) {
3735 fprintf(fp, "_leaf->get_long()");
3736 } else if ( (strcmp(optype,"Con")==0) ) {
3737 // !!!!! - Update if adding a machine-independent constant type
3738 fprintf(fp, "_leaf->get_int()");
3739 assert( false, "Unsupported constant type, pointer or indefinite");
3740 } else if ( (strcmp(optype,"Bool") == 0) ) {
3741 fprintf(fp, "_leaf->as_Bool()->_test._test");
3742 } else {
3743 assert( false, "Unsupported constant type");
3744 }
3745 return;
3746 }
3748 // If constant is in left child, build path and recurse
3749 uint lConsts = (mnode->_lChild) ? (mnode->_lChild->num_consts(globals) ) : 0;
3750 uint rConsts = (mnode->_rChild) ? (mnode->_rChild->num_consts(globals) ) : 0;
3751 if ( (mnode->_lChild) && (lConsts > idx) ) {
3752 fprintf(fp, "_kids[0]->");
3753 path_to_constant(fp, globals, mnode->_lChild, idx);
3754 return;
3755 }
3756 // If constant is in right child, build path and recurse
3757 if ( (mnode->_rChild) && (rConsts > (idx - lConsts) ) ) {
3758 idx = idx - lConsts;
3759 fprintf(fp, "_kids[1]->");
3760 path_to_constant(fp, globals, mnode->_rChild, idx);
3761 return;
3762 }
3763 assert( false, "ShouldNotReachHere()");
3764 }
3766 // Generate code that is executed when generating a specific Machine Operand
3767 static void genMachOperCase(FILE *fp, FormDict &globalNames, ArchDesc &AD,
3768 OperandForm &op) {
3769 const char *opName = op._ident;
3770 const char *opEnumName = AD.machOperEnum(opName);
3771 uint num_consts = op.num_consts(globalNames);
3773 // Generate the case statement for this opcode
3774 fprintf(fp, " case %s:", opEnumName);
3775 fprintf(fp, "\n return new (C) %sOper(", opName);
3776 // Access parameters for constructor from the stat object
3777 //
3778 // Build access to condition code value
3779 if ( (num_consts > 0) ) {
3780 uint i = 0;
3781 path_to_constant(fp, globalNames, op._matrule, i);
3782 for ( i = 1; i < num_consts; ++i ) {
3783 fprintf(fp, ", ");
3784 path_to_constant(fp, globalNames, op._matrule, i);
3785 }
3786 }
3787 fprintf(fp, " );\n");
3788 }
3791 // Build switch to invoke "new" MachNode or MachOper
3792 void ArchDesc::buildMachOperGenerator(FILE *fp_cpp) {
3793 int idx = 0;
3795 // Build switch to invoke 'new' for a specific MachOper
3796 fprintf(fp_cpp, "\n");
3797 fprintf(fp_cpp, "\n");
3798 fprintf(fp_cpp,
3799 "//------------------------- MachOper Generator ---------------\n");
3800 fprintf(fp_cpp,
3801 "// A switch statement on the dense-packed user-defined type system\n"
3802 "// that invokes 'new' on the corresponding class constructor.\n");
3803 fprintf(fp_cpp, "\n");
3804 fprintf(fp_cpp, "MachOper *State::MachOperGenerator");
3805 fprintf(fp_cpp, "(int opcode, Compile* C)");
3806 fprintf(fp_cpp, "{\n");
3807 fprintf(fp_cpp, "\n");
3808 fprintf(fp_cpp, " switch(opcode) {\n");
3810 // Place all user-defined operands into the mapping
3811 _operands.reset();
3812 int opIndex = 0;
3813 OperandForm *op;
3814 for( ; (op = (OperandForm*)_operands.iter()) != NULL; ) {
3815 // Ensure this is a machine-world instruction
3816 if ( op->ideal_only() ) continue;
3818 genMachOperCase(fp_cpp, _globalNames, *this, *op);
3819 };
3821 // Do not iterate over operand classes for the operand generator!!!
3823 // Place all internal operands into the mapping
3824 _internalOpNames.reset();
3825 const char *iopn;
3826 for( ; (iopn = _internalOpNames.iter()) != NULL; ) {
3827 const char *opEnumName = machOperEnum(iopn);
3828 // Generate the case statement for this opcode
3829 fprintf(fp_cpp, " case %s:", opEnumName);
3830 fprintf(fp_cpp, " return NULL;\n");
3831 };
3833 // Generate the default case for switch(opcode)
3834 fprintf(fp_cpp, " \n");
3835 fprintf(fp_cpp, " default:\n");
3836 fprintf(fp_cpp, " fprintf(stderr, \"Default MachOper Generator invoked for: \\n\");\n");
3837 fprintf(fp_cpp, " fprintf(stderr, \" opcode = %cd\\n\", opcode);\n", '%');
3838 fprintf(fp_cpp, " break;\n");
3839 fprintf(fp_cpp, " }\n");
3841 // Generate the closing for method Matcher::MachOperGenerator
3842 fprintf(fp_cpp, " return NULL;\n");
3843 fprintf(fp_cpp, "};\n");
3844 }
3847 //---------------------------buildMachNode-------------------------------------
3848 // Build a new MachNode, for MachNodeGenerator or cisc-spilling
3849 void ArchDesc::buildMachNode(FILE *fp_cpp, InstructForm *inst, const char *indent) {
3850 const char *opType = NULL;
3851 const char *opClass = inst->_ident;
3853 // Create the MachNode object
3854 fprintf(fp_cpp, "%s %sNode *node = new (C) %sNode();\n",indent, opClass,opClass);
3856 if ( (inst->num_post_match_opnds() != 0) ) {
3857 // Instruction that contains operands which are not in match rule.
3858 //
3859 // Check if the first post-match component may be an interesting def
3860 bool dont_care = false;
3861 ComponentList &comp_list = inst->_components;
3862 Component *comp = NULL;
3863 comp_list.reset();
3864 if ( comp_list.match_iter() != NULL ) dont_care = true;
3866 // Insert operands that are not in match-rule.
3867 // Only insert a DEF if the do_care flag is set
3868 comp_list.reset();
3869 while ( comp = comp_list.post_match_iter() ) {
3870 // Check if we don't care about DEFs or KILLs that are not USEs
3871 if ( dont_care && (! comp->isa(Component::USE)) ) {
3872 continue;
3873 }
3874 dont_care = true;
3875 // For each operand not in the match rule, call MachOperGenerator
3876 // with the enum for the opcode that needs to be built.
3877 ComponentList clist = inst->_components;
3878 int index = clist.operand_position(comp->_name, comp->_usedef, inst);
3879 const char *opcode = machOperEnum(comp->_type);
3880 fprintf(fp_cpp, "%s node->set_opnd_array(%d, ", indent, index);
3881 fprintf(fp_cpp, "MachOperGenerator(%s, C));\n", opcode);
3882 }
3883 }
3884 else if ( inst->is_chain_of_constant(_globalNames, opType) ) {
3885 // An instruction that chains from a constant!
3886 // In this case, we need to subsume the constant into the node
3887 // at operand position, oper_input_base().
3888 //
3889 // Fill in the constant
3890 fprintf(fp_cpp, "%s node->_opnd_array[%d] = ", indent,
3891 inst->oper_input_base(_globalNames));
3892 // #####
3893 // Check for multiple constants and then fill them in.
3894 // Just like MachOperGenerator
3895 const char *opName = inst->_matrule->_rChild->_opType;
3896 fprintf(fp_cpp, "new (C) %sOper(", opName);
3897 // Grab operand form
3898 OperandForm *op = (_globalNames[opName])->is_operand();
3899 // Look up the number of constants
3900 uint num_consts = op->num_consts(_globalNames);
3901 if ( (num_consts > 0) ) {
3902 uint i = 0;
3903 path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3904 for ( i = 1; i < num_consts; ++i ) {
3905 fprintf(fp_cpp, ", ");
3906 path_to_constant(fp_cpp, _globalNames, op->_matrule, i);
3907 }
3908 }
3909 fprintf(fp_cpp, " );\n");
3910 // #####
3911 }
3913 // Fill in the bottom_type where requested
3914 if (inst->captures_bottom_type(_globalNames)) {
3915 if (strncmp("MachCall", inst->mach_base_class(_globalNames), strlen("MachCall"))) {
3916 fprintf(fp_cpp, "%s node->_bottom_type = _leaf->bottom_type();\n", indent);
3917 }
3918 }
3919 if( inst->is_ideal_if() ) {
3920 fprintf(fp_cpp, "%s node->_prob = _leaf->as_If()->_prob;\n", indent);
3921 fprintf(fp_cpp, "%s node->_fcnt = _leaf->as_If()->_fcnt;\n", indent);
3922 }
3923 if( inst->is_ideal_fastlock() ) {
3924 fprintf(fp_cpp, "%s node->_counters = _leaf->as_FastLock()->counters();\n", indent);
3925 fprintf(fp_cpp, "%s node->_rtm_counters = _leaf->as_FastLock()->rtm_counters();\n", indent);
3926 fprintf(fp_cpp, "%s node->_stack_rtm_counters = _leaf->as_FastLock()->stack_rtm_counters();\n", indent);
3927 }
3929 }
3931 //---------------------------declare_cisc_version------------------------------
3932 // Build CISC version of this instruction
3933 void InstructForm::declare_cisc_version(ArchDesc &AD, FILE *fp_hpp) {
3934 if( AD.can_cisc_spill() ) {
3935 InstructForm *inst_cisc = cisc_spill_alternate();
3936 if (inst_cisc != NULL) {
3937 fprintf(fp_hpp, " virtual int cisc_operand() const { return %d; }\n", cisc_spill_operand());
3938 fprintf(fp_hpp, " virtual MachNode *cisc_version(int offset, Compile* C);\n");
3939 fprintf(fp_hpp, " virtual void use_cisc_RegMask();\n");
3940 fprintf(fp_hpp, " virtual const RegMask *cisc_RegMask() const { return _cisc_RegMask; }\n");
3941 }
3942 }
3943 }
3945 //---------------------------define_cisc_version-------------------------------
3946 // Build CISC version of this instruction
3947 bool InstructForm::define_cisc_version(ArchDesc &AD, FILE *fp_cpp) {
3948 InstructForm *inst_cisc = this->cisc_spill_alternate();
3949 if( AD.can_cisc_spill() && (inst_cisc != NULL) ) {
3950 const char *name = inst_cisc->_ident;
3951 assert( inst_cisc->num_opnds() == this->num_opnds(), "Must have same number of operands");
3952 OperandForm *cisc_oper = AD.cisc_spill_operand();
3953 assert( cisc_oper != NULL, "insanity check");
3954 const char *cisc_oper_name = cisc_oper->_ident;
3955 assert( cisc_oper_name != NULL, "insanity check");
3956 //
3957 // Set the correct reg_mask_or_stack for the cisc operand
3958 fprintf(fp_cpp, "\n");
3959 fprintf(fp_cpp, "void %sNode::use_cisc_RegMask() {\n", this->_ident);
3960 // Lookup the correct reg_mask_or_stack
3961 const char *reg_mask_name = cisc_reg_mask_name();
3962 fprintf(fp_cpp, " _cisc_RegMask = &STACK_OR_%s;\n", reg_mask_name);
3963 fprintf(fp_cpp, "}\n");
3964 //
3965 // Construct CISC version of this instruction
3966 fprintf(fp_cpp, "\n");
3967 fprintf(fp_cpp, "// Build CISC version of this instruction\n");
3968 fprintf(fp_cpp, "MachNode *%sNode::cisc_version( int offset, Compile* C ) {\n", this->_ident);
3969 // Create the MachNode object
3970 fprintf(fp_cpp, " %sNode *node = new (C) %sNode();\n", name, name);
3971 // Fill in the bottom_type where requested
3972 if ( this->captures_bottom_type(AD.globalNames()) ) {
3973 fprintf(fp_cpp, " node->_bottom_type = bottom_type();\n");
3974 }
3976 uint cur_num_opnds = num_opnds();
3977 if (cur_num_opnds > 1 && cur_num_opnds != num_unique_opnds()) {
3978 fprintf(fp_cpp," node->_num_opnds = %d;\n", num_unique_opnds());
3979 }
3981 fprintf(fp_cpp, "\n");
3982 fprintf(fp_cpp, " // Copy _idx, inputs and operands to new node\n");
3983 fprintf(fp_cpp, " fill_new_machnode(node, C);\n");
3984 // Construct operand to access [stack_pointer + offset]
3985 fprintf(fp_cpp, " // Construct operand to access [stack_pointer + offset]\n");
3986 fprintf(fp_cpp, " node->set_opnd_array(cisc_operand(), new (C) %sOper(offset));\n", cisc_oper_name);
3987 fprintf(fp_cpp, "\n");
3989 // Return result and exit scope
3990 fprintf(fp_cpp, " return node;\n");
3991 fprintf(fp_cpp, "}\n");
3992 fprintf(fp_cpp, "\n");
3993 return true;
3994 }
3995 return false;
3996 }
3998 //---------------------------declare_short_branch_methods----------------------
3999 // Build prototypes for short branch methods
4000 void InstructForm::declare_short_branch_methods(FILE *fp_hpp) {
4001 if (has_short_branch_form()) {
4002 fprintf(fp_hpp, " virtual MachNode *short_branch_version(Compile* C);\n");
4003 }
4004 }
4006 //---------------------------define_short_branch_methods-----------------------
4007 // Build definitions for short branch methods
4008 bool InstructForm::define_short_branch_methods(ArchDesc &AD, FILE *fp_cpp) {
4009 if (has_short_branch_form()) {
4010 InstructForm *short_branch = short_branch_form();
4011 const char *name = short_branch->_ident;
4013 // Construct short_branch_version() method.
4014 fprintf(fp_cpp, "// Build short branch version of this instruction\n");
4015 fprintf(fp_cpp, "MachNode *%sNode::short_branch_version(Compile* C) {\n", this->_ident);
4016 // Create the MachNode object
4017 fprintf(fp_cpp, " %sNode *node = new (C) %sNode();\n", name, name);
4018 if( is_ideal_if() ) {
4019 fprintf(fp_cpp, " node->_prob = _prob;\n");
4020 fprintf(fp_cpp, " node->_fcnt = _fcnt;\n");
4021 }
4022 // Fill in the bottom_type where requested
4023 if ( this->captures_bottom_type(AD.globalNames()) ) {
4024 fprintf(fp_cpp, " node->_bottom_type = bottom_type();\n");
4025 }
4027 fprintf(fp_cpp, "\n");
4028 // Short branch version must use same node index for access
4029 // through allocator's tables
4030 fprintf(fp_cpp, " // Copy _idx, inputs and operands to new node\n");
4031 fprintf(fp_cpp, " fill_new_machnode(node, C);\n");
4033 // Return result and exit scope
4034 fprintf(fp_cpp, " return node;\n");
4035 fprintf(fp_cpp, "}\n");
4036 fprintf(fp_cpp,"\n");
4037 return true;
4038 }
4039 return false;
4040 }
4043 //---------------------------buildMachNodeGenerator----------------------------
4044 // Build switch to invoke appropriate "new" MachNode for an opcode
4045 void ArchDesc::buildMachNodeGenerator(FILE *fp_cpp) {
4047 // Build switch to invoke 'new' for a specific MachNode
4048 fprintf(fp_cpp, "\n");
4049 fprintf(fp_cpp, "\n");
4050 fprintf(fp_cpp,
4051 "//------------------------- MachNode Generator ---------------\n");
4052 fprintf(fp_cpp,
4053 "// A switch statement on the dense-packed user-defined type system\n"
4054 "// that invokes 'new' on the corresponding class constructor.\n");
4055 fprintf(fp_cpp, "\n");
4056 fprintf(fp_cpp, "MachNode *State::MachNodeGenerator");
4057 fprintf(fp_cpp, "(int opcode, Compile* C)");
4058 fprintf(fp_cpp, "{\n");
4059 fprintf(fp_cpp, " switch(opcode) {\n");
4061 // Provide constructor for all user-defined instructions
4062 _instructions.reset();
4063 int opIndex = operandFormCount();
4064 InstructForm *inst;
4065 for( ; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
4066 // Ensure that matrule is defined.
4067 if ( inst->_matrule == NULL ) continue;
4069 int opcode = opIndex++;
4070 const char *opClass = inst->_ident;
4071 char *opType = NULL;
4073 // Generate the case statement for this instruction
4074 fprintf(fp_cpp, " case %s_rule:", opClass);
4076 // Start local scope
4077 fprintf(fp_cpp, " {\n");
4078 // Generate code to construct the new MachNode
4079 buildMachNode(fp_cpp, inst, " ");
4080 // Return result and exit scope
4081 fprintf(fp_cpp, " return node;\n");
4082 fprintf(fp_cpp, " }\n");
4083 }
4085 // Generate the default case for switch(opcode)
4086 fprintf(fp_cpp, " \n");
4087 fprintf(fp_cpp, " default:\n");
4088 fprintf(fp_cpp, " fprintf(stderr, \"Default MachNode Generator invoked for: \\n\");\n");
4089 fprintf(fp_cpp, " fprintf(stderr, \" opcode = %cd\\n\", opcode);\n", '%');
4090 fprintf(fp_cpp, " break;\n");
4091 fprintf(fp_cpp, " };\n");
4093 // Generate the closing for method Matcher::MachNodeGenerator
4094 fprintf(fp_cpp, " return NULL;\n");
4095 fprintf(fp_cpp, "}\n");
4096 }
4099 //---------------------------buildInstructMatchCheck--------------------------
4100 // Output the method to Matcher which checks whether or not a specific
4101 // instruction has a matching rule for the host architecture.
4102 void ArchDesc::buildInstructMatchCheck(FILE *fp_cpp) const {
4103 fprintf(fp_cpp, "\n\n");
4104 fprintf(fp_cpp, "const bool Matcher::has_match_rule(int opcode) {\n");
4105 fprintf(fp_cpp, " assert(_last_machine_leaf < opcode && opcode < _last_opcode, \"opcode in range\");\n");
4106 fprintf(fp_cpp, " return _hasMatchRule[opcode];\n");
4107 fprintf(fp_cpp, "}\n\n");
4109 fprintf(fp_cpp, "const bool Matcher::_hasMatchRule[_last_opcode] = {\n");
4110 int i;
4111 for (i = 0; i < _last_opcode - 1; i++) {
4112 fprintf(fp_cpp, " %-5s, // %s\n",
4113 _has_match_rule[i] ? "true" : "false",
4114 NodeClassNames[i]);
4115 }
4116 fprintf(fp_cpp, " %-5s // %s\n",
4117 _has_match_rule[i] ? "true" : "false",
4118 NodeClassNames[i]);
4119 fprintf(fp_cpp, "};\n");
4120 }
4122 //---------------------------buildFrameMethods---------------------------------
4123 // Output the methods to Matcher which specify frame behavior
4124 void ArchDesc::buildFrameMethods(FILE *fp_cpp) {
4125 fprintf(fp_cpp,"\n\n");
4126 // Stack Direction
4127 fprintf(fp_cpp,"bool Matcher::stack_direction() const { return %s; }\n\n",
4128 _frame->_direction ? "true" : "false");
4129 // Sync Stack Slots
4130 fprintf(fp_cpp,"int Compile::sync_stack_slots() const { return %s; }\n\n",
4131 _frame->_sync_stack_slots);
4132 // Java Stack Alignment
4133 fprintf(fp_cpp,"uint Matcher::stack_alignment_in_bytes() { return %s; }\n\n",
4134 _frame->_alignment);
4135 // Java Return Address Location
4136 fprintf(fp_cpp,"OptoReg::Name Matcher::return_addr() const {");
4137 if (_frame->_return_addr_loc) {
4138 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4139 _frame->_return_addr);
4140 }
4141 else {
4142 fprintf(fp_cpp," return OptoReg::stack2reg(%s); }\n\n",
4143 _frame->_return_addr);
4144 }
4145 // Java Stack Slot Preservation
4146 fprintf(fp_cpp,"uint Compile::in_preserve_stack_slots() ");
4147 fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_in_preserve_slots);
4148 // Top Of Stack Slot Preservation, for both Java and C
4149 fprintf(fp_cpp,"uint Compile::out_preserve_stack_slots() ");
4150 fprintf(fp_cpp,"{ return SharedRuntime::out_preserve_stack_slots(); }\n\n");
4151 // varargs C out slots killed
4152 fprintf(fp_cpp,"uint Compile::varargs_C_out_slots_killed() const ");
4153 fprintf(fp_cpp,"{ return %s; }\n\n", _frame->_varargs_C_out_slots_killed);
4154 // Java Argument Position
4155 fprintf(fp_cpp,"void Matcher::calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length, bool is_outgoing) {\n");
4156 fprintf(fp_cpp,"%s\n", _frame->_calling_convention);
4157 fprintf(fp_cpp,"}\n\n");
4158 // Native Argument Position
4159 fprintf(fp_cpp,"void Matcher::c_calling_convention(BasicType *sig_bt, VMRegPair *regs, uint length) {\n");
4160 fprintf(fp_cpp,"%s\n", _frame->_c_calling_convention);
4161 fprintf(fp_cpp,"}\n\n");
4162 // Java Return Value Location
4163 fprintf(fp_cpp,"OptoRegPair Matcher::return_value(uint ideal_reg, bool is_outgoing) {\n");
4164 fprintf(fp_cpp,"%s\n", _frame->_return_value);
4165 fprintf(fp_cpp,"}\n\n");
4166 // Native Return Value Location
4167 fprintf(fp_cpp,"OptoRegPair Matcher::c_return_value(uint ideal_reg, bool is_outgoing) {\n");
4168 fprintf(fp_cpp,"%s\n", _frame->_c_return_value);
4169 fprintf(fp_cpp,"}\n\n");
4171 // Inline Cache Register, mask definition, and encoding
4172 fprintf(fp_cpp,"OptoReg::Name Matcher::inline_cache_reg() {");
4173 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4174 _frame->_inline_cache_reg);
4175 fprintf(fp_cpp,"int Matcher::inline_cache_reg_encode() {");
4176 fprintf(fp_cpp," return _regEncode[inline_cache_reg()]; }\n\n");
4178 // Interpreter's Method Oop Register, mask definition, and encoding
4179 fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_method_oop_reg() {");
4180 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4181 _frame->_interpreter_method_oop_reg);
4182 fprintf(fp_cpp,"int Matcher::interpreter_method_oop_reg_encode() {");
4183 fprintf(fp_cpp," return _regEncode[interpreter_method_oop_reg()]; }\n\n");
4185 // Interpreter's Frame Pointer Register, mask definition, and encoding
4186 fprintf(fp_cpp,"OptoReg::Name Matcher::interpreter_frame_pointer_reg() {");
4187 if (_frame->_interpreter_frame_pointer_reg == NULL)
4188 fprintf(fp_cpp," return OptoReg::Bad; }\n\n");
4189 else
4190 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4191 _frame->_interpreter_frame_pointer_reg);
4193 // Frame Pointer definition
4194 /* CNC - I can not contemplate having a different frame pointer between
4195 Java and native code; makes my head hurt to think about it.
4196 fprintf(fp_cpp,"OptoReg::Name Matcher::frame_pointer() const {");
4197 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4198 _frame->_frame_pointer);
4199 */
4200 // (Native) Frame Pointer definition
4201 fprintf(fp_cpp,"OptoReg::Name Matcher::c_frame_pointer() const {");
4202 fprintf(fp_cpp," return OptoReg::Name(%s_num); }\n\n",
4203 _frame->_frame_pointer);
4205 // Number of callee-save + always-save registers for calling convention
4206 fprintf(fp_cpp, "// Number of callee-save + always-save registers\n");
4207 fprintf(fp_cpp, "int Matcher::number_of_saved_registers() {\n");
4208 RegDef *rdef;
4209 int nof_saved_registers = 0;
4210 _register->reset_RegDefs();
4211 while( (rdef = _register->iter_RegDefs()) != NULL ) {
4212 if( !strcmp(rdef->_callconv, "SOE") || !strcmp(rdef->_callconv, "AS") )
4213 ++nof_saved_registers;
4214 }
4215 fprintf(fp_cpp, " return %d;\n", nof_saved_registers);
4216 fprintf(fp_cpp, "};\n\n");
4217 }
4222 static int PrintAdlcCisc = 0;
4223 //---------------------------identify_cisc_spilling----------------------------
4224 // Get info for the CISC_oracle and MachNode::cisc_version()
4225 void ArchDesc::identify_cisc_spill_instructions() {
4227 if (_frame == NULL)
4228 return;
4230 // Find the user-defined operand for cisc-spilling
4231 if( _frame->_cisc_spilling_operand_name != NULL ) {
4232 const Form *form = _globalNames[_frame->_cisc_spilling_operand_name];
4233 OperandForm *oper = form ? form->is_operand() : NULL;
4234 // Verify the user's suggestion
4235 if( oper != NULL ) {
4236 // Ensure that match field is defined.
4237 if ( oper->_matrule != NULL ) {
4238 MatchRule &mrule = *oper->_matrule;
4239 if( strcmp(mrule._opType,"AddP") == 0 ) {
4240 MatchNode *left = mrule._lChild;
4241 MatchNode *right= mrule._rChild;
4242 if( left != NULL && right != NULL ) {
4243 const Form *left_op = _globalNames[left->_opType]->is_operand();
4244 const Form *right_op = _globalNames[right->_opType]->is_operand();
4245 if( (left_op != NULL && right_op != NULL)
4246 && (left_op->interface_type(_globalNames) == Form::register_interface)
4247 && (right_op->interface_type(_globalNames) == Form::constant_interface) ) {
4248 // Successfully verified operand
4249 set_cisc_spill_operand( oper );
4250 if( _cisc_spill_debug ) {
4251 fprintf(stderr, "\n\nVerified CISC-spill operand %s\n\n", oper->_ident);
4252 }
4253 }
4254 }
4255 }
4256 }
4257 }
4258 }
4260 if( cisc_spill_operand() != NULL ) {
4261 // N^2 comparison of instructions looking for a cisc-spilling version
4262 _instructions.reset();
4263 InstructForm *instr;
4264 for( ; (instr = (InstructForm*)_instructions.iter()) != NULL; ) {
4265 // Ensure that match field is defined.
4266 if ( instr->_matrule == NULL ) continue;
4268 MatchRule &mrule = *instr->_matrule;
4269 Predicate *pred = instr->build_predicate();
4271 // Grab the machine type of the operand
4272 const char *rootOp = instr->_ident;
4273 mrule._machType = rootOp;
4275 // Find result type for match
4276 const char *result = instr->reduce_result();
4278 if( PrintAdlcCisc ) fprintf(stderr, " new instruction %s \n", instr->_ident ? instr->_ident : " ");
4279 bool found_cisc_alternate = false;
4280 _instructions.reset2();
4281 InstructForm *instr2;
4282 for( ; !found_cisc_alternate && (instr2 = (InstructForm*)_instructions.iter2()) != NULL; ) {
4283 // Ensure that match field is defined.
4284 if( PrintAdlcCisc ) fprintf(stderr, " instr2 == %s \n", instr2->_ident ? instr2->_ident : " ");
4285 if ( instr2->_matrule != NULL
4286 && (instr != instr2 ) // Skip self
4287 && (instr2->reduce_result() != NULL) // want same result
4288 && (strcmp(result, instr2->reduce_result()) == 0)) {
4289 MatchRule &mrule2 = *instr2->_matrule;
4290 Predicate *pred2 = instr2->build_predicate();
4291 found_cisc_alternate = instr->cisc_spills_to(*this, instr2);
4292 }
4293 }
4294 }
4295 }
4296 }
4298 //---------------------------build_cisc_spilling-------------------------------
4299 // Get info for the CISC_oracle and MachNode::cisc_version()
4300 void ArchDesc::build_cisc_spill_instructions(FILE *fp_hpp, FILE *fp_cpp) {
4301 // Output the table for cisc spilling
4302 fprintf(fp_cpp, "// The following instructions can cisc-spill\n");
4303 _instructions.reset();
4304 InstructForm *inst = NULL;
4305 for(; (inst = (InstructForm*)_instructions.iter()) != NULL; ) {
4306 // Ensure this is a machine-world instruction
4307 if ( inst->ideal_only() ) continue;
4308 const char *inst_name = inst->_ident;
4309 int operand = inst->cisc_spill_operand();
4310 if( operand != AdlcVMDeps::Not_cisc_spillable ) {
4311 InstructForm *inst2 = inst->cisc_spill_alternate();
4312 fprintf(fp_cpp, "// %s can cisc-spill operand %d to %s\n", inst->_ident, operand, inst2->_ident);
4313 }
4314 }
4315 fprintf(fp_cpp, "\n\n");
4316 }
4318 //---------------------------identify_short_branches----------------------------
4319 // Get info for our short branch replacement oracle.
4320 void ArchDesc::identify_short_branches() {
4321 // Walk over all instructions, checking to see if they match a short
4322 // branching alternate.
4323 _instructions.reset();
4324 InstructForm *instr;
4325 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4326 // The instruction must have a match rule.
4327 if (instr->_matrule != NULL &&
4328 instr->is_short_branch()) {
4330 _instructions.reset2();
4331 InstructForm *instr2;
4332 while( (instr2 = (InstructForm*)_instructions.iter2()) != NULL ) {
4333 instr2->check_branch_variant(*this, instr);
4334 }
4335 }
4336 }
4337 }
4340 //---------------------------identify_unique_operands---------------------------
4341 // Identify unique operands.
4342 void ArchDesc::identify_unique_operands() {
4343 // Walk over all instructions.
4344 _instructions.reset();
4345 InstructForm *instr;
4346 while( (instr = (InstructForm*)_instructions.iter()) != NULL ) {
4347 // Ensure this is a machine-world instruction
4348 if (!instr->ideal_only()) {
4349 instr->set_unique_opnds();
4350 }
4351 }
4352 }
