Thu, 08 Apr 2010 12:13:07 -0700
6942223: c1 64 bit fixes
Summary: This fixes lir_cmp_l2i on x64 and sparc 64bit, and the debug info generation.
Reviewed-by: never
1 /*
2 * Copyright 1999-2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_c1_Compilation.cpp.incl"
29 typedef enum {
30 _t_compile,
31 _t_setup,
32 _t_optimizeIR,
33 _t_buildIR,
34 _t_emit_lir,
35 _t_linearScan,
36 _t_lirGeneration,
37 _t_lir_schedule,
38 _t_codeemit,
39 _t_codeinstall,
40 max_phase_timers
41 } TimerName;
43 static const char * timer_name[] = {
44 "compile",
45 "setup",
46 "optimizeIR",
47 "buildIR",
48 "emit_lir",
49 "linearScan",
50 "lirGeneration",
51 "lir_schedule",
52 "codeemit",
53 "codeinstall"
54 };
56 static elapsedTimer timers[max_phase_timers];
57 static int totalInstructionNodes = 0;
59 class PhaseTraceTime: public TraceTime {
60 private:
61 JavaThread* _thread;
63 public:
64 PhaseTraceTime(TimerName timer):
65 TraceTime("", &timers[timer], CITime || CITimeEach, Verbose) {
66 }
67 };
69 Arena* Compilation::_arena = NULL;
70 Compilation* Compilation::_compilation = NULL;
72 // Implementation of Compilation
75 #ifndef PRODUCT
77 void Compilation::maybe_print_current_instruction() {
78 if (_current_instruction != NULL && _last_instruction_printed != _current_instruction) {
79 _last_instruction_printed = _current_instruction;
80 _current_instruction->print_line();
81 }
82 }
83 #endif // PRODUCT
86 DebugInformationRecorder* Compilation::debug_info_recorder() const {
87 return _env->debug_info();
88 }
91 Dependencies* Compilation::dependency_recorder() const {
92 return _env->dependencies();
93 }
96 void Compilation::initialize() {
97 // Use an oop recorder bound to the CI environment.
98 // (The default oop recorder is ignorant of the CI.)
99 OopRecorder* ooprec = new OopRecorder(_env->arena());
100 _env->set_oop_recorder(ooprec);
101 _env->set_debug_info(new DebugInformationRecorder(ooprec));
102 debug_info_recorder()->set_oopmaps(new OopMapSet());
103 _env->set_dependencies(new Dependencies(_env));
104 }
107 void Compilation::build_hir() {
108 CHECK_BAILOUT();
110 // setup ir
111 _hir = new IR(this, method(), osr_bci());
112 if (!_hir->is_valid()) {
113 bailout("invalid parsing");
114 return;
115 }
117 #ifndef PRODUCT
118 if (PrintCFGToFile) {
119 CFGPrinter::print_cfg(_hir, "After Generation of HIR", true, false);
120 }
121 #endif
123 #ifndef PRODUCT
124 if (PrintCFG || PrintCFG0) { tty->print_cr("CFG after parsing"); _hir->print(true); }
125 if (PrintIR || PrintIR0 ) { tty->print_cr("IR after parsing"); _hir->print(false); }
126 #endif
128 _hir->verify();
130 if (UseC1Optimizations) {
131 NEEDS_CLEANUP
132 // optimization
133 PhaseTraceTime timeit(_t_optimizeIR);
135 _hir->optimize();
136 }
138 _hir->verify();
140 _hir->split_critical_edges();
142 #ifndef PRODUCT
143 if (PrintCFG || PrintCFG1) { tty->print_cr("CFG after optimizations"); _hir->print(true); }
144 if (PrintIR || PrintIR1 ) { tty->print_cr("IR after optimizations"); _hir->print(false); }
145 #endif
147 _hir->verify();
149 // compute block ordering for code generation
150 // the control flow must not be changed from here on
151 _hir->compute_code();
153 if (UseGlobalValueNumbering) {
154 ResourceMark rm;
155 int instructions = Instruction::number_of_instructions();
156 GlobalValueNumbering gvn(_hir);
157 assert(instructions == Instruction::number_of_instructions(),
158 "shouldn't have created an instructions");
159 }
161 // compute use counts after global value numbering
162 _hir->compute_use_counts();
164 #ifndef PRODUCT
165 if (PrintCFG || PrintCFG2) { tty->print_cr("CFG before code generation"); _hir->code()->print(true); }
166 if (PrintIR || PrintIR2 ) { tty->print_cr("IR before code generation"); _hir->code()->print(false, true); }
167 #endif
169 _hir->verify();
170 }
173 void Compilation::emit_lir() {
174 CHECK_BAILOUT();
176 LIRGenerator gen(this, method());
177 {
178 PhaseTraceTime timeit(_t_lirGeneration);
179 hir()->iterate_linear_scan_order(&gen);
180 }
182 CHECK_BAILOUT();
184 {
185 PhaseTraceTime timeit(_t_linearScan);
187 LinearScan* allocator = new LinearScan(hir(), &gen, frame_map());
188 set_allocator(allocator);
189 // Assign physical registers to LIR operands using a linear scan algorithm.
190 allocator->do_linear_scan();
191 CHECK_BAILOUT();
193 _max_spills = allocator->max_spills();
194 }
196 if (BailoutAfterLIR) {
197 if (PrintLIR && !bailed_out()) {
198 print_LIR(hir()->code());
199 }
200 bailout("Bailing out because of -XX:+BailoutAfterLIR");
201 }
202 }
205 void Compilation::emit_code_epilog(LIR_Assembler* assembler) {
206 CHECK_BAILOUT();
208 CodeOffsets* code_offsets = assembler->offsets();
210 // generate code or slow cases
211 assembler->emit_slow_case_stubs();
212 CHECK_BAILOUT();
214 // generate exception adapters
215 assembler->emit_exception_entries(exception_info_list());
216 CHECK_BAILOUT();
218 // Generate code for exception handler.
219 code_offsets->set_value(CodeOffsets::Exceptions, assembler->emit_exception_handler());
220 CHECK_BAILOUT();
222 // Generate code for deopt handler.
223 code_offsets->set_value(CodeOffsets::Deopt, assembler->emit_deopt_handler());
224 CHECK_BAILOUT();
226 // Generate code for MethodHandle deopt handler. We can use the
227 // same code as for the normal deopt handler, we just need a
228 // different entry point address.
229 code_offsets->set_value(CodeOffsets::DeoptMH, assembler->emit_deopt_handler());
230 CHECK_BAILOUT();
232 // done
233 masm()->flush();
234 }
237 int Compilation::emit_code_body() {
238 // emit code
239 Runtime1::setup_code_buffer(code(), allocator()->num_calls());
240 code()->initialize_oop_recorder(env()->oop_recorder());
242 _masm = new C1_MacroAssembler(code());
243 _masm->set_oop_recorder(env()->oop_recorder());
245 LIR_Assembler lir_asm(this);
247 lir_asm.emit_code(hir()->code());
248 CHECK_BAILOUT_(0);
250 emit_code_epilog(&lir_asm);
251 CHECK_BAILOUT_(0);
253 generate_exception_handler_table();
255 #ifndef PRODUCT
256 if (PrintExceptionHandlers && Verbose) {
257 exception_handler_table()->print();
258 }
259 #endif /* PRODUCT */
261 return frame_map()->framesize();
262 }
265 int Compilation::compile_java_method() {
266 assert(!method()->is_native(), "should not reach here");
268 if (BailoutOnExceptionHandlers) {
269 if (method()->has_exception_handlers()) {
270 bailout("linear scan can't handle exception handlers");
271 }
272 }
274 CHECK_BAILOUT_(no_frame_size);
276 {
277 PhaseTraceTime timeit(_t_buildIR);
278 build_hir();
279 }
280 if (BailoutAfterHIR) {
281 BAILOUT_("Bailing out because of -XX:+BailoutAfterHIR", no_frame_size);
282 }
285 {
286 PhaseTraceTime timeit(_t_emit_lir);
288 _frame_map = new FrameMap(method(), hir()->number_of_locks(), MAX2(4, hir()->max_stack()));
289 emit_lir();
290 }
291 CHECK_BAILOUT_(no_frame_size);
293 {
294 PhaseTraceTime timeit(_t_codeemit);
295 return emit_code_body();
296 }
297 }
299 void Compilation::install_code(int frame_size) {
300 // frame_size is in 32-bit words so adjust it intptr_t words
301 assert(frame_size == frame_map()->framesize(), "must match");
302 assert(in_bytes(frame_map()->framesize_in_bytes()) % sizeof(intptr_t) == 0, "must be at least pointer aligned");
303 _env->register_method(
304 method(),
305 osr_bci(),
306 &_offsets,
307 in_bytes(_frame_map->sp_offset_for_orig_pc()),
308 code(),
309 in_bytes(frame_map()->framesize_in_bytes()) / sizeof(intptr_t),
310 debug_info_recorder()->_oopmaps,
311 exception_handler_table(),
312 implicit_exception_table(),
313 compiler(),
314 _env->comp_level(),
315 needs_debug_information(),
316 has_unsafe_access()
317 );
318 }
321 void Compilation::compile_method() {
322 // setup compilation
323 initialize();
325 if (!method()->can_be_compiled()) {
326 // Prevent race condition 6328518.
327 // This can happen if the method is obsolete or breakpointed.
328 bailout("Bailing out because method is not compilable");
329 return;
330 }
332 if (_env->jvmti_can_hotswap_or_post_breakpoint()) {
333 // We can assert evol_method because method->can_be_compiled is true.
334 dependency_recorder()->assert_evol_method(method());
335 }
337 if (method()->break_at_execute()) {
338 BREAKPOINT;
339 }
341 #ifndef PRODUCT
342 if (PrintCFGToFile) {
343 CFGPrinter::print_compilation(this);
344 }
345 #endif
347 // compile method
348 int frame_size = compile_java_method();
350 // bailout if method couldn't be compiled
351 // Note: make sure we mark the method as not compilable!
352 CHECK_BAILOUT();
354 if (InstallMethods) {
355 // install code
356 PhaseTraceTime timeit(_t_codeinstall);
357 install_code(frame_size);
358 }
359 totalInstructionNodes += Instruction::number_of_instructions();
360 }
363 void Compilation::generate_exception_handler_table() {
364 // Generate an ExceptionHandlerTable from the exception handler
365 // information accumulated during the compilation.
366 ExceptionInfoList* info_list = exception_info_list();
368 if (info_list->length() == 0) {
369 return;
370 }
372 // allocate some arrays for use by the collection code.
373 const int num_handlers = 5;
374 GrowableArray<intptr_t>* bcis = new GrowableArray<intptr_t>(num_handlers);
375 GrowableArray<intptr_t>* scope_depths = new GrowableArray<intptr_t>(num_handlers);
376 GrowableArray<intptr_t>* pcos = new GrowableArray<intptr_t>(num_handlers);
378 for (int i = 0; i < info_list->length(); i++) {
379 ExceptionInfo* info = info_list->at(i);
380 XHandlers* handlers = info->exception_handlers();
382 // empty the arrays
383 bcis->trunc_to(0);
384 scope_depths->trunc_to(0);
385 pcos->trunc_to(0);
387 for (int i = 0; i < handlers->length(); i++) {
388 XHandler* handler = handlers->handler_at(i);
389 assert(handler->entry_pco() != -1, "must have been generated");
391 int e = bcis->find(handler->handler_bci());
392 if (e >= 0 && scope_depths->at(e) == handler->scope_count()) {
393 // two different handlers are declared to dispatch to the same
394 // catch bci. During parsing we created edges for each
395 // handler but we really only need one. The exception handler
396 // table will also get unhappy if we try to declare both since
397 // it's nonsensical. Just skip this handler.
398 continue;
399 }
401 bcis->append(handler->handler_bci());
402 if (handler->handler_bci() == -1) {
403 // insert a wildcard handler at scope depth 0 so that the
404 // exception lookup logic with find it.
405 scope_depths->append(0);
406 } else {
407 scope_depths->append(handler->scope_count());
408 }
409 pcos->append(handler->entry_pco());
411 // stop processing once we hit a catch any
412 if (handler->is_catch_all()) {
413 assert(i == handlers->length() - 1, "catch all must be last handler");
414 }
415 }
416 exception_handler_table()->add_subtable(info->pco(), bcis, scope_depths, pcos);
417 }
418 }
421 Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, int osr_bci)
422 : _compiler(compiler)
423 , _env(env)
424 , _method(method)
425 , _osr_bci(osr_bci)
426 , _hir(NULL)
427 , _max_spills(-1)
428 , _frame_map(NULL)
429 , _masm(NULL)
430 , _has_exception_handlers(false)
431 , _has_fpu_code(true) // pessimistic assumption
432 , _has_unsafe_access(false)
433 , _bailout_msg(NULL)
434 , _exception_info_list(NULL)
435 , _allocator(NULL)
436 , _code(Runtime1::get_buffer_blob()->instructions_begin(),
437 Runtime1::get_buffer_blob()->instructions_size())
438 , _current_instruction(NULL)
439 #ifndef PRODUCT
440 , _last_instruction_printed(NULL)
441 #endif // PRODUCT
442 {
443 PhaseTraceTime timeit(_t_compile);
445 assert(_arena == NULL, "shouldn't only one instance of Compilation in existence at a time");
446 _arena = Thread::current()->resource_area();
447 _compilation = this;
448 _needs_debug_information = _env->jvmti_can_examine_or_deopt_anywhere() ||
449 JavaMonitorsInStackTrace || AlwaysEmitDebugInfo || DeoptimizeALot;
450 _exception_info_list = new ExceptionInfoList();
451 _implicit_exception_table.set_size(0);
452 compile_method();
453 }
455 Compilation::~Compilation() {
456 _arena = NULL;
457 _compilation = NULL;
458 }
461 void Compilation::add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers) {
462 #ifndef PRODUCT
463 if (PrintExceptionHandlers && Verbose) {
464 tty->print_cr(" added exception scope for pco %d", pco);
465 }
466 #endif
467 // Note: we do not have program counters for these exception handlers yet
468 exception_info_list()->push(new ExceptionInfo(pco, exception_handlers));
469 }
472 void Compilation::notice_inlined_method(ciMethod* method) {
473 _env->notice_inlined_method(method);
474 }
477 void Compilation::bailout(const char* msg) {
478 assert(msg != NULL, "bailout message must exist");
479 if (!bailed_out()) {
480 // keep first bailout message
481 if (PrintBailouts) tty->print_cr("compilation bailout: %s", msg);
482 _bailout_msg = msg;
483 }
484 }
487 void Compilation::print_timers() {
488 // tty->print_cr(" Native methods : %6.3f s, Average : %2.3f", CompileBroker::_t_native_compilation.seconds(), CompileBroker::_t_native_compilation.seconds() / CompileBroker::_total_native_compile_count);
489 float total = timers[_t_setup].seconds() + timers[_t_buildIR].seconds() + timers[_t_emit_lir].seconds() + timers[_t_lir_schedule].seconds() + timers[_t_codeemit].seconds() + timers[_t_codeinstall].seconds();
492 tty->print_cr(" Detailed C1 Timings");
493 tty->print_cr(" Setup time: %6.3f s (%4.1f%%)", timers[_t_setup].seconds(), (timers[_t_setup].seconds() / total) * 100.0);
494 tty->print_cr(" Build IR: %6.3f s (%4.1f%%)", timers[_t_buildIR].seconds(), (timers[_t_buildIR].seconds() / total) * 100.0);
495 tty->print_cr(" Optimize: %6.3f s (%4.1f%%)", timers[_t_optimizeIR].seconds(), (timers[_t_optimizeIR].seconds() / total) * 100.0);
496 tty->print_cr(" Emit LIR: %6.3f s (%4.1f%%)", timers[_t_emit_lir].seconds(), (timers[_t_emit_lir].seconds() / total) * 100.0);
497 tty->print_cr(" LIR Gen: %6.3f s (%4.1f%%)", timers[_t_lirGeneration].seconds(), (timers[_t_lirGeneration].seconds() / total) * 100.0);
498 tty->print_cr(" Linear Scan: %6.3f s (%4.1f%%)", timers[_t_linearScan].seconds(), (timers[_t_linearScan].seconds() / total) * 100.0);
499 NOT_PRODUCT(LinearScan::print_timers(timers[_t_linearScan].seconds()));
500 tty->print_cr(" LIR Schedule: %6.3f s (%4.1f%%)", timers[_t_lir_schedule].seconds(), (timers[_t_lir_schedule].seconds() / total) * 100.0);
501 tty->print_cr(" Code Emission: %6.3f s (%4.1f%%)", timers[_t_codeemit].seconds(), (timers[_t_codeemit].seconds() / total) * 100.0);
502 tty->print_cr(" Code Installation: %6.3f s (%4.1f%%)", timers[_t_codeinstall].seconds(), (timers[_t_codeinstall].seconds() / total) * 100.0);
503 tty->print_cr(" Instruction Nodes: %6d nodes", totalInstructionNodes);
505 NOT_PRODUCT(LinearScan::print_statistics());
506 }
509 #ifndef PRODUCT
510 void Compilation::compile_only_this_method() {
511 ResourceMark rm;
512 fileStream stream(fopen("c1_compile_only", "wt"));
513 stream.print_cr("# c1 compile only directives");
514 compile_only_this_scope(&stream, hir()->top_scope());
515 }
518 void Compilation::compile_only_this_scope(outputStream* st, IRScope* scope) {
519 st->print("CompileOnly=");
520 scope->method()->holder()->name()->print_symbol_on(st);
521 st->print(".");
522 scope->method()->name()->print_symbol_on(st);
523 st->cr();
524 }
527 void Compilation::exclude_this_method() {
528 fileStream stream(fopen(".hotspot_compiler", "at"));
529 stream.print("exclude ");
530 method()->holder()->name()->print_symbol_on(&stream);
531 stream.print(" ");
532 method()->name()->print_symbol_on(&stream);
533 stream.cr();
534 stream.cr();
535 }
536 #endif