1 /*
2 * Copyright (c) 1999, 2021, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "c1/c1_CFGPrinter.hpp"
27 #include "c1/c1_Compilation.hpp"
28 #include "c1/c1_IR.hpp"
29 #include "c1/c1_LIRAssembler.hpp"
30 #include "c1/c1_LinearScan.hpp"
31 #include "c1/c1_MacroAssembler.hpp"
32 #include "c1/c1_RangeCheckElimination.hpp"
33 #include "c1/c1_ValueMap.hpp"
34 #include "c1/c1_ValueStack.hpp"
35 #include "code/debugInfoRec.hpp"
36 #include "compiler/compileLog.hpp"
37 #include "compiler/compilerDirectives.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "runtime/sharedRuntime.hpp"
40 #include "runtime/timerTrace.hpp"
41
42 typedef enum {
43 _t_compile,
44 _t_setup,
45 _t_buildIR,
46 _t_hir_parse,
47 _t_gvn,
48 _t_optimize_blocks,
49 _t_optimize_null_checks,
50 _t_rangeCheckElimination,
51 _t_emit_lir,
52 _t_linearScan,
53 _t_lirGeneration,
54 _t_codeemit,
55 _t_codeinstall,
56 max_phase_timers
57 } TimerName;
58
59 static const char * timer_name[] = {
60 "compile",
61 "setup",
62 "buildIR",
63 "parse_hir",
64 "gvn",
65 "optimize_blocks",
66 "optimize_null_checks",
67 "rangeCheckElimination",
68 "emit_lir",
69 "linearScan",
70 "lirGeneration",
71 "codeemit",
72 "codeinstall"
73 };
74
75 static elapsedTimer timers[max_phase_timers];
76 static int totalInstructionNodes = 0;
77
78 class PhaseTraceTime: public TraceTime {
79 private:
80 JavaThread* _thread;
81 CompileLog* _log;
82 TimerName _timer;
83
84 public:
85 PhaseTraceTime(TimerName timer)
86 : TraceTime("", &timers[timer], CITime || CITimeEach, Verbose),
87 _log(NULL), _timer(timer)
88 {
89 if (Compilation::current() != NULL) {
90 _log = Compilation::current()->log();
91 }
92
93 if (_log != NULL) {
94 _log->begin_head("phase name='%s'", timer_name[_timer]);
95 _log->stamp();
96 _log->end_head();
97 }
98 }
99
100 ~PhaseTraceTime() {
101 if (_log != NULL)
102 _log->done("phase name='%s'", timer_name[_timer]);
103 }
104 };
105
106 // Implementation of Compilation
107
108
109 #ifndef PRODUCT
110
111 void Compilation::maybe_print_current_instruction() {
112 if (_current_instruction != NULL && _last_instruction_printed != _current_instruction) {
113 _last_instruction_printed = _current_instruction;
114 _current_instruction->print_line();
115 }
116 }
117 #endif // PRODUCT
118
119
120 DebugInformationRecorder* Compilation::debug_info_recorder() const {
121 return _env->debug_info();
122 }
123
124
125 Dependencies* Compilation::dependency_recorder() const {
126 return _env->dependencies();
127 }
128
129
130 void Compilation::initialize() {
131 // Use an oop recorder bound to the CI environment.
132 // (The default oop recorder is ignorant of the CI.)
133 OopRecorder* ooprec = new OopRecorder(_env->arena());
134 _env->set_oop_recorder(ooprec);
135 _env->set_debug_info(new DebugInformationRecorder(ooprec));
136 debug_info_recorder()->set_oopmaps(new OopMapSet());
137 _env->set_dependencies(new Dependencies(_env));
138 }
139
140
141 void Compilation::build_hir() {
142 CHECK_BAILOUT();
143
144 // setup ir
145 CompileLog* log = this->log();
146 if (log != NULL) {
147 log->begin_head("parse method='%d' ",
148 log->identify(_method));
149 log->stamp();
150 log->end_head();
151 }
152 {
153 PhaseTraceTime timeit(_t_hir_parse);
154 _hir = new IR(this, method(), osr_bci());
155 }
156 if (log) log->done("parse");
157 if (!_hir->is_valid()) {
158 bailout("invalid parsing");
159 return;
160 }
161
162 #ifndef PRODUCT
163 if (PrintCFGToFile) {
164 CFGPrinter::print_cfg(_hir, "After Generation of HIR", true, false);
165 }
166 #endif
167
168 #ifndef PRODUCT
169 if (PrintCFG || PrintCFG0) { tty->print_cr("CFG after parsing"); _hir->print(true); }
170 if (PrintIR || PrintIR0 ) { tty->print_cr("IR after parsing"); _hir->print(false); }
171 #endif
172
173 _hir->verify();
174
175 if (UseC1Optimizations) {
176 NEEDS_CLEANUP
177 // optimization
178 PhaseTraceTime timeit(_t_optimize_blocks);
179
180 _hir->optimize_blocks();
181 }
182
183 _hir->verify();
184
185 _hir->split_critical_edges();
186
187 #ifndef PRODUCT
188 if (PrintCFG || PrintCFG1) { tty->print_cr("CFG after optimizations"); _hir->print(true); }
189 if (PrintIR || PrintIR1 ) { tty->print_cr("IR after optimizations"); _hir->print(false); }
190 #endif
191
192 _hir->verify();
193
194 // compute block ordering for code generation
195 // the control flow must not be changed from here on
196 _hir->compute_code();
197
198 if (UseGlobalValueNumbering) {
199 // No resource mark here! LoopInvariantCodeMotion can allocate ValueStack objects.
200 PhaseTraceTime timeit(_t_gvn);
201 int instructions = Instruction::number_of_instructions();
202 GlobalValueNumbering gvn(_hir);
203 assert(instructions == Instruction::number_of_instructions(),
204 "shouldn't have created an instructions");
205 }
206
207 _hir->verify();
208
209 #ifndef PRODUCT
210 if (PrintCFGToFile) {
211 CFGPrinter::print_cfg(_hir, "Before RangeCheckElimination", true, false);
212 }
213 #endif
214
215 if (RangeCheckElimination) {
216 if (_hir->osr_entry() == NULL) {
217 PhaseTraceTime timeit(_t_rangeCheckElimination);
218 RangeCheckElimination::eliminate(_hir);
219 }
220 }
221
222 #ifndef PRODUCT
223 if (PrintCFGToFile) {
224 CFGPrinter::print_cfg(_hir, "After RangeCheckElimination", true, false);
225 }
226 #endif
227
228 if (UseC1Optimizations) {
229 // loop invariant code motion reorders instructions and range
230 // check elimination adds new instructions so do null check
231 // elimination after.
232 NEEDS_CLEANUP
233 // optimization
234 PhaseTraceTime timeit(_t_optimize_null_checks);
235
236 _hir->eliminate_null_checks();
237 }
238
239 _hir->verify();
240
241 // compute use counts after global value numbering
242 _hir->compute_use_counts();
243
244 #ifndef PRODUCT
245 if (PrintCFG || PrintCFG2) { tty->print_cr("CFG before code generation"); _hir->code()->print(true); }
246 if (PrintIR || PrintIR2 ) { tty->print_cr("IR before code generation"); _hir->code()->print(false, true); }
247 #endif
248
249 _hir->verify();
250 }
251
252
253 void Compilation::emit_lir() {
254 CHECK_BAILOUT();
255
256 LIRGenerator gen(this, method());
257 {
258 PhaseTraceTime timeit(_t_lirGeneration);
259 hir()->iterate_linear_scan_order(&gen);
260 }
261
262 CHECK_BAILOUT();
263
264 {
265 PhaseTraceTime timeit(_t_linearScan);
266
267 LinearScan* allocator = new LinearScan(hir(), &gen, frame_map());
268 set_allocator(allocator);
269 // Assign physical registers to LIR operands using a linear scan algorithm.
270 allocator->do_linear_scan();
271 CHECK_BAILOUT();
272
273 _max_spills = allocator->max_spills();
274 }
275
276 if (BailoutAfterLIR) {
277 if (PrintLIR && !bailed_out()) {
278 print_LIR(hir()->code());
279 }
280 bailout("Bailing out because of -XX:+BailoutAfterLIR");
281 }
282 }
283
284
285 void Compilation::emit_code_epilog(LIR_Assembler* assembler) {
286 CHECK_BAILOUT();
287
288 CodeOffsets* code_offsets = assembler->offsets();
289
290 // generate code or slow cases
291 assembler->emit_slow_case_stubs();
292 CHECK_BAILOUT();
293
294 // generate exception adapters
295 assembler->emit_exception_entries(exception_info_list());
296 CHECK_BAILOUT();
297
298 // Generate code for exception handler.
299 code_offsets->set_value(CodeOffsets::Exceptions, assembler->emit_exception_handler());
300 CHECK_BAILOUT();
301
302 // Generate code for deopt handler.
303 code_offsets->set_value(CodeOffsets::Deopt, assembler->emit_deopt_handler());
304 CHECK_BAILOUT();
305
306 // Emit the MethodHandle deopt handler code (if required).
307 if (has_method_handle_invokes()) {
308 // We can use the same code as for the normal deopt handler, we
309 // just need a different entry point address.
310 code_offsets->set_value(CodeOffsets::DeoptMH, assembler->emit_deopt_handler());
311 CHECK_BAILOUT();
312 }
313
314 // Emit the handler to remove the activation from the stack and
315 // dispatch to the caller.
316 offsets()->set_value(CodeOffsets::UnwindHandler, assembler->emit_unwind_handler());
317
318 // done
319 masm()->flush();
320 }
321
322
323 bool Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {
324 // Preinitialize the consts section to some large size:
325 int locs_buffer_size = 20 * (relocInfo::length_limit + sizeof(relocInfo));
326 char* locs_buffer = NEW_RESOURCE_ARRAY(char, locs_buffer_size);
327 code->insts()->initialize_shared_locs((relocInfo*)locs_buffer,
328 locs_buffer_size / sizeof(relocInfo));
329 code->initialize_consts_size(Compilation::desired_max_constant_size());
330 // Call stubs + two deopt handlers (regular and MH) + exception handler
331 int stub_size = (call_stub_estimate * LIR_Assembler::call_stub_size()) +
332 LIR_Assembler::exception_handler_size() +
333 (2 * LIR_Assembler::deopt_handler_size());
334 if (stub_size >= code->insts_capacity()) return false;
335 code->initialize_stubs_size(stub_size);
336 return true;
337 }
338
339
340 int Compilation::emit_code_body() {
341 // emit code
342 if (!setup_code_buffer(code(), allocator()->num_calls())) {
343 BAILOUT_("size requested greater than avail code buffer size", 0);
344 }
345 code()->initialize_oop_recorder(env()->oop_recorder());
346
347 _masm = new C1_MacroAssembler(code());
348 _masm->set_oop_recorder(env()->oop_recorder());
349
350 LIR_Assembler lir_asm(this);
351
352 lir_asm.emit_code(hir()->code());
353 CHECK_BAILOUT_(0);
354
355 emit_code_epilog(&lir_asm);
356 CHECK_BAILOUT_(0);
357
358 generate_exception_handler_table();
359
360 #ifndef PRODUCT
361 if (PrintExceptionHandlers && Verbose) {
362 exception_handler_table()->print();
363 }
364 #endif /* PRODUCT */
365
366 return frame_map()->framesize();
367 }
368
369
370 int Compilation::compile_java_method() {
371 assert(!method()->is_native(), "should not reach here");
372
373 if (BailoutOnExceptionHandlers) {
374 if (method()->has_exception_handlers()) {
375 bailout("linear scan can't handle exception handlers");
376 }
377 }
378
379 CHECK_BAILOUT_(no_frame_size);
380
381 if (is_profiling() && !method()->ensure_method_data()) {
382 BAILOUT_("mdo allocation failed", no_frame_size);
383 }
384
385 {
386 PhaseTraceTime timeit(_t_buildIR);
387 build_hir();
388 }
389 if (BailoutAfterHIR) {
390 BAILOUT_("Bailing out because of -XX:+BailoutAfterHIR", no_frame_size);
391 }
392
393
394 {
395 PhaseTraceTime timeit(_t_emit_lir);
396
397 _frame_map = new FrameMap(method(), hir()->number_of_locks(), MAX2(4, hir()->max_stack()));
398 emit_lir();
399 }
400 CHECK_BAILOUT_(no_frame_size);
401
402 {
403 PhaseTraceTime timeit(_t_codeemit);
404 return emit_code_body();
405 }
406 }
407
408 void Compilation::install_code(int frame_size) {
409 // frame_size is in 32-bit words so adjust it intptr_t words
410 assert(frame_size == frame_map()->framesize(), "must match");
411 assert(in_bytes(frame_map()->framesize_in_bytes()) % sizeof(intptr_t) == 0, "must be at least pointer aligned");
412 _env->register_method(
413 method(),
414 osr_bci(),
415 &_offsets,
416 in_bytes(_frame_map->sp_offset_for_orig_pc()),
417 code(),
418 in_bytes(frame_map()->framesize_in_bytes()) / sizeof(intptr_t),
419 debug_info_recorder()->_oopmaps,
420 exception_handler_table(),
421 implicit_exception_table(),
422 compiler(),
423 has_unsafe_access(),
424 SharedRuntime::is_wide_vector(max_vector_size())
425 );
426 }
427
428
429 void Compilation::compile_method() {
430 {
431 PhaseTraceTime timeit(_t_setup);
432
433 // setup compilation
434 initialize();
435 }
436
437 if (!method()->can_be_compiled()) {
438 // Prevent race condition 6328518.
439 // This can happen if the method is obsolete or breakpointed.
440 bailout("Bailing out because method is not compilable");
441 return;
442 }
443
444 if (_env->jvmti_can_hotswap_or_post_breakpoint()) {
445 // We can assert evol_method because method->can_be_compiled is true.
446 dependency_recorder()->assert_evol_method(method());
447 }
448
449 if (env()->break_at_compile()) {
450 BREAKPOINT;
451 }
452
453 #ifndef PRODUCT
454 if (PrintCFGToFile) {
455 CFGPrinter::print_compilation(this);
456 }
457 #endif
458
459 // compile method
460 int frame_size = compile_java_method();
461
462 // bailout if method couldn't be compiled
463 // Note: make sure we mark the method as not compilable!
464 CHECK_BAILOUT();
465
466 if (should_install_code()) {
467 // install code
468 PhaseTraceTime timeit(_t_codeinstall);
469 install_code(frame_size);
470 }
471
472 if (log() != NULL) // Print code cache state into compiler log
473 log()->code_cache_state();
474
475 totalInstructionNodes += Instruction::number_of_instructions();
476 }
477
478
479 void Compilation::generate_exception_handler_table() {
480 // Generate an ExceptionHandlerTable from the exception handler
481 // information accumulated during the compilation.
482 ExceptionInfoList* info_list = exception_info_list();
483
484 if (info_list->length() == 0) {
485 return;
486 }
487
488 // allocate some arrays for use by the collection code.
489 const int num_handlers = 5;
490 GrowableArray<intptr_t>* bcis = new GrowableArray<intptr_t>(num_handlers);
491 GrowableArray<intptr_t>* scope_depths = new GrowableArray<intptr_t>(num_handlers);
492 GrowableArray<intptr_t>* pcos = new GrowableArray<intptr_t>(num_handlers);
493
494 for (int i = 0; i < info_list->length(); i++) {
495 ExceptionInfo* info = info_list->at(i);
496 XHandlers* handlers = info->exception_handlers();
497
498 // empty the arrays
499 bcis->trunc_to(0);
500 scope_depths->trunc_to(0);
501 pcos->trunc_to(0);
502
503 int prev_scope = 0;
504 for (int i = 0; i < handlers->length(); i++) {
505 XHandler* handler = handlers->handler_at(i);
506 assert(handler->entry_pco() != -1, "must have been generated");
507 assert(handler->scope_count() >= prev_scope, "handlers should be sorted by scope");
508
509 if (handler->scope_count() == prev_scope) {
510 int e = bcis->find_from_end(handler->handler_bci());
511 if (e >= 0 && scope_depths->at(e) == handler->scope_count()) {
512 // two different handlers are declared to dispatch to the same
513 // catch bci. During parsing we created edges for each
514 // handler but we really only need one. The exception handler
515 // table will also get unhappy if we try to declare both since
516 // it's nonsensical. Just skip this handler.
517 continue;
518 }
519 }
520
521 bcis->append(handler->handler_bci());
522 if (handler->handler_bci() == -1) {
523 // insert a wildcard handler at scope depth 0 so that the
524 // exception lookup logic with find it.
525 scope_depths->append(0);
526 } else {
527 scope_depths->append(handler->scope_count());
528 }
529 pcos->append(handler->entry_pco());
530
531 // stop processing once we hit a catch any
532 if (handler->is_catch_all()) {
533 assert(i == handlers->length() - 1, "catch all must be last handler");
534 }
535 prev_scope = handler->scope_count();
536 }
537 exception_handler_table()->add_subtable(info->pco(), bcis, scope_depths, pcos);
538 }
539 }
540
541 Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
542 int osr_bci, BufferBlob* buffer_blob, bool install_code, DirectiveSet* directive)
543 : _next_id(0)
544 , _next_block_id(0)
545 , _compiler(compiler)
546 , _directive(directive)
547 , _env(env)
548 , _log(env->log())
549 , _method(method)
550 , _osr_bci(osr_bci)
551 , _hir(NULL)
552 , _max_spills(-1)
553 , _frame_map(NULL)
554 , _masm(NULL)
555 , _has_exception_handlers(false)
556 , _has_fpu_code(true) // pessimistic assumption
557 , _has_unsafe_access(false)
558 , _would_profile(false)
559 , _has_method_handle_invokes(false)
560 , _has_reserved_stack_access(method->has_reserved_stack_access())
561 , _install_code(install_code)
562 , _bailout_msg(NULL)
563 , _exception_info_list(NULL)
564 , _allocator(NULL)
565 , _code(buffer_blob)
566 , _has_access_indexed(false)
567 , _interpreter_frame_size(0)
568 , _current_instruction(NULL)
569 #ifndef PRODUCT
570 , _last_instruction_printed(NULL)
571 , _cfg_printer_output(NULL)
572 #endif // PRODUCT
573 {
574 PhaseTraceTime timeit(_t_compile);
575 _arena = Thread::current()->resource_area();
576 _env->set_compiler_data(this);
577 _exception_info_list = new ExceptionInfoList();
578 _implicit_exception_table.set_size(0);
579 #ifndef PRODUCT
580 if (PrintCFGToFile) {
581 _cfg_printer_output = new CFGPrinterOutput(this);
582 }
583 #endif
584 compile_method();
585 if (bailed_out()) {
586 _env->record_method_not_compilable(bailout_msg());
587 if (is_profiling()) {
588 // Compilation failed, create MDO, which would signal the interpreter
589 // to start profiling on its own.
590 _method->ensure_method_data();
591 }
592 } else if (is_profiling()) {
593 ciMethodData *md = method->method_data_or_null();
594 if (md != NULL) {
595 md->set_would_profile(_would_profile);
596 }
597 }
598 }
599
600 Compilation::~Compilation() {
601 _env->set_compiler_data(NULL);
602 }
603
604 void Compilation::add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers) {
605 #ifndef PRODUCT
606 if (PrintExceptionHandlers && Verbose) {
607 tty->print_cr(" added exception scope for pco %d", pco);
608 }
609 #endif
610 // Note: we do not have program counters for these exception handlers yet
611 exception_info_list()->push(new ExceptionInfo(pco, exception_handlers));
612 }
613
614
615 void Compilation::notice_inlined_method(ciMethod* method) {
616 _env->notice_inlined_method(method);
617 }
618
619
620 void Compilation::bailout(const char* msg) {
621 assert(msg != NULL, "bailout message must exist");
622 if (!bailed_out()) {
623 // keep first bailout message
624 if (PrintCompilation || PrintBailouts) tty->print_cr("compilation bailout: %s", msg);
625 _bailout_msg = msg;
626 }
627 }
628
629 ciKlass* Compilation::cha_exact_type(ciType* type) {
630 if (type != NULL && type->is_loaded() && type->is_instance_klass()) {
631 ciInstanceKlass* ik = type->as_instance_klass();
632 assert(ik->exact_klass() == NULL, "no cha for final klass");
633 if (DeoptC1 && UseCHA && !(ik->has_subklass() || ik->is_interface())) {
634 dependency_recorder()->assert_leaf_type(ik);
635 return ik;
636 }
637 }
638 return NULL;
639 }
640
641 void Compilation::print_timers() {
642 tty->print_cr(" C1 Compile Time: %7.3f s", timers[_t_compile].seconds());
643 tty->print_cr(" Setup time: %7.3f s", timers[_t_setup].seconds());
644
645 {
646 tty->print_cr(" Build HIR: %7.3f s", timers[_t_buildIR].seconds());
647 tty->print_cr(" Parse: %7.3f s", timers[_t_hir_parse].seconds());
648 tty->print_cr(" Optimize blocks: %7.3f s", timers[_t_optimize_blocks].seconds());
649 tty->print_cr(" GVN: %7.3f s", timers[_t_gvn].seconds());
650 tty->print_cr(" Null checks elim: %7.3f s", timers[_t_optimize_null_checks].seconds());
651 tty->print_cr(" Range checks elim: %7.3f s", timers[_t_rangeCheckElimination].seconds());
652
653 double other = timers[_t_buildIR].seconds() -
654 (timers[_t_hir_parse].seconds() +
655 timers[_t_optimize_blocks].seconds() +
656 timers[_t_gvn].seconds() +
657 timers[_t_optimize_null_checks].seconds() +
658 timers[_t_rangeCheckElimination].seconds());
659 if (other > 0) {
660 tty->print_cr(" Other: %7.3f s", other);
661 }
662 }
663
664 {
665 tty->print_cr(" Emit LIR: %7.3f s", timers[_t_emit_lir].seconds());
666 tty->print_cr(" LIR Gen: %7.3f s", timers[_t_lirGeneration].seconds());
667 tty->print_cr(" Linear Scan: %7.3f s", timers[_t_linearScan].seconds());
668 NOT_PRODUCT(LinearScan::print_timers(timers[_t_linearScan].seconds()));
669
670 double other = timers[_t_emit_lir].seconds() -
671 (timers[_t_lirGeneration].seconds() +
672 timers[_t_linearScan].seconds());
673 if (other > 0) {
674 tty->print_cr(" Other: %7.3f s", other);
675 }
676 }
677
678 tty->print_cr(" Code Emission: %7.3f s", timers[_t_codeemit].seconds());
679 tty->print_cr(" Code Installation: %7.3f s", timers[_t_codeinstall].seconds());
680
681 double other = timers[_t_compile].seconds() -
682 (timers[_t_setup].seconds() +
683 timers[_t_buildIR].seconds() +
684 timers[_t_emit_lir].seconds() +
685 timers[_t_codeemit].seconds() +
686 timers[_t_codeinstall].seconds());
687 if (other > 0) {
688 tty->print_cr(" Other: %7.3f s", other);
689 }
690
691 NOT_PRODUCT(LinearScan::print_statistics());
692 }
693
694
695 #ifndef PRODUCT
696 void Compilation::compile_only_this_method() {
697 ResourceMark rm;
698 fileStream stream(fopen("c1_compile_only", "wt"));
699 stream.print_cr("# c1 compile only directives");
700 compile_only_this_scope(&stream, hir()->top_scope());
701 }
702
703 void Compilation::compile_only_this_scope(outputStream* st, IRScope* scope) {
704 st->print("CompileOnly=");
705 scope->method()->holder()->name()->print_symbol_on(st);
706 st->print(".");
707 scope->method()->name()->print_symbol_on(st);
708 st->cr();
709 }
710
711 void Compilation::exclude_this_method() {
712 fileStream stream(fopen(".hotspot_compiler", "at"));
713 stream.print("exclude ");
714 method()->holder()->name()->print_symbol_on(&stream);
715 stream.print(" ");
716 method()->name()->print_symbol_on(&stream);
717 stream.cr();
718 stream.cr();
719 }
720
721 // Called from debugger to get the interval with 'reg_num' during register allocation.
722 Interval* find_interval(int reg_num) {
723 return Compilation::current()->allocator()->find_interval_at(reg_num);
724 }
725
726 #endif // NOT PRODUCT