jdk8-mips64-public/hotspot: src/share/vm/c1/c1

     1 /*

     2  * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #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_ValueMap.hpp"

    33 #include "c1/c1_ValueStack.hpp"

    34 #include "code/debugInfoRec.hpp"

    37 typedef enum {

    38   _t_compile,

    39   _t_setup,

    40   _t_optimizeIR,

    41   _t_buildIR,

    42   _t_emit_lir,

    43   _t_linearScan,

    44   _t_lirGeneration,

    45   _t_lir_schedule,

    46   _t_codeemit,

    47   _t_codeinstall,

    48   max_phase_timers

    49 } TimerName;

    51 static const char * timer_name[] = {

    52   "compile",

    53   "setup",

    54   "optimizeIR",

    55   "buildIR",

    56   "emit_lir",

    57   "linearScan",

    58   "lirGeneration",

    59   "lir_schedule",

    60   "codeemit",

    61   "codeinstall"

    62 };

    64 static elapsedTimer timers[max_phase_timers];

    65 static int totalInstructionNodes = 0;

    67 class PhaseTraceTime: public TraceTime {

    68  private:

    69   JavaThread* _thread;

    71  public:

    72   PhaseTraceTime(TimerName timer):

    73     TraceTime("", &timers[timer], CITime || CITimeEach, Verbose) {

    74   }

    75 };

    77 // Implementation of Compilation

    80 #ifndef PRODUCT

    82 void Compilation::maybe_print_current_instruction() {

    83   if (_current_instruction != NULL && _last_instruction_printed != _current_instruction) {

    84     _last_instruction_printed = _current_instruction;

    85     _current_instruction->print_line();

    86   }

    87 }

    88 #endif // PRODUCT

    91 DebugInformationRecorder* Compilation::debug_info_recorder() const {

    92   return _env->debug_info();

    93 }

    96 Dependencies* Compilation::dependency_recorder() const {

    97   return _env->dependencies();

    98 }

   101 void Compilation::initialize() {

   102   // Use an oop recorder bound to the CI environment.

   103   // (The default oop recorder is ignorant of the CI.)

   104   OopRecorder* ooprec = new OopRecorder(_env->arena());

   105   _env->set_oop_recorder(ooprec);

   106   _env->set_debug_info(new DebugInformationRecorder(ooprec));

   107   debug_info_recorder()->set_oopmaps(new OopMapSet());

   108   _env->set_dependencies(new Dependencies(_env));

   109 }

   112 void Compilation::build_hir() {

   113   CHECK_BAILOUT();

   115   // setup ir

   116   _hir = new IR(this, method(), osr_bci());

   117   if (!_hir->is_valid()) {

   118     bailout("invalid parsing");

   119     return;

   120   }

   122 #ifndef PRODUCT

   123   if (PrintCFGToFile) {

   124     CFGPrinter::print_cfg(_hir, "After Generation of HIR", true, false);

   125   }

   126 #endif

   128 #ifndef PRODUCT

   129   if (PrintCFG || PrintCFG0) { tty->print_cr("CFG after parsing"); _hir->print(true); }

   130   if (PrintIR  || PrintIR0 ) { tty->print_cr("IR after parsing"); _hir->print(false); }

   131 #endif

   133   _hir->verify();

   135   if (UseC1Optimizations) {

   136     NEEDS_CLEANUP

   137     // optimization

   138     PhaseTraceTime timeit(_t_optimizeIR);

   140     _hir->optimize();

   141   }

   143   _hir->verify();

   145   _hir->split_critical_edges();

   147 #ifndef PRODUCT

   148   if (PrintCFG || PrintCFG1) { tty->print_cr("CFG after optimizations"); _hir->print(true); }

   149   if (PrintIR  || PrintIR1 ) { tty->print_cr("IR after optimizations"); _hir->print(false); }

   150 #endif

   152   _hir->verify();

   154   // compute block ordering for code generation

   155   // the control flow must not be changed from here on

   156   _hir->compute_code();

   158   if (UseGlobalValueNumbering) {

   159     ResourceMark rm;

   160     int instructions = Instruction::number_of_instructions();

   161     GlobalValueNumbering gvn(_hir);

   162     assert(instructions == Instruction::number_of_instructions(),

   163            "shouldn't have created an instructions");

   164   }

   166   // compute use counts after global value numbering

   167   _hir->compute_use_counts();

   169 #ifndef PRODUCT

   170   if (PrintCFG || PrintCFG2) { tty->print_cr("CFG before code generation"); _hir->code()->print(true); }

   171   if (PrintIR  || PrintIR2 ) { tty->print_cr("IR before code generation"); _hir->code()->print(false, true); }

   172 #endif

   174   _hir->verify();

   175 }

   178 void Compilation::emit_lir() {

   179   CHECK_BAILOUT();

   181   LIRGenerator gen(this, method());

   182   {

   183     PhaseTraceTime timeit(_t_lirGeneration);

   184     hir()->iterate_linear_scan_order(&gen);

   185   }

   187   CHECK_BAILOUT();

   189   {

   190     PhaseTraceTime timeit(_t_linearScan);

   192     LinearScan* allocator = new LinearScan(hir(), &gen, frame_map());

   193     set_allocator(allocator);

   194     // Assign physical registers to LIR operands using a linear scan algorithm.

   195     allocator->do_linear_scan();

   196     CHECK_BAILOUT();

   198     _max_spills = allocator->max_spills();

   199   }

   201   if (BailoutAfterLIR) {

   202     if (PrintLIR && !bailed_out()) {

   203       print_LIR(hir()->code());

   204     }

   205     bailout("Bailing out because of -XX:+BailoutAfterLIR");

   206   }

   207 }

   210 void Compilation::emit_code_epilog(LIR_Assembler* assembler) {

   211   CHECK_BAILOUT();

   213   CodeOffsets* code_offsets = assembler->offsets();

   215   // generate code or slow cases

   216   assembler->emit_slow_case_stubs();

   217   CHECK_BAILOUT();

   219   // generate exception adapters

   220   assembler->emit_exception_entries(exception_info_list());

   221   CHECK_BAILOUT();

   223   // Generate code for exception handler.

   224   code_offsets->set_value(CodeOffsets::Exceptions, assembler->emit_exception_handler());

   225   CHECK_BAILOUT();

   227   // Generate code for deopt handler.

   228   code_offsets->set_value(CodeOffsets::Deopt, assembler->emit_deopt_handler());

   229   CHECK_BAILOUT();

   231   // Emit the MethodHandle deopt handler code (if required).

   232   if (has_method_handle_invokes()) {

   233     // We can use the same code as for the normal deopt handler, we

   234     // just need a different entry point address.

   235     code_offsets->set_value(CodeOffsets::DeoptMH, assembler->emit_deopt_handler());

   236     CHECK_BAILOUT();

   237   }

   239   // Emit the handler to remove the activation from the stack and

   240   // dispatch to the caller.

   241   offsets()->set_value(CodeOffsets::UnwindHandler, assembler->emit_unwind_handler());

   243   // done

   244   masm()->flush();

   245 }

   248 bool Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {

   249   // Preinitialize the consts section to some large size:

   250   int locs_buffer_size = 20 * (relocInfo::length_limit + sizeof(relocInfo));

   251   char* locs_buffer = NEW_RESOURCE_ARRAY(char, locs_buffer_size);

   252   code->insts()->initialize_shared_locs((relocInfo*)locs_buffer,

   253                                         locs_buffer_size / sizeof(relocInfo));

   254   code->initialize_consts_size(Compilation::desired_max_constant_size());

   255   // Call stubs + two deopt handlers (regular and MH) + exception handler

   256   int stub_size = (call_stub_estimate * LIR_Assembler::call_stub_size) +

   257                    LIR_Assembler::exception_handler_size +

   258                    (2 * LIR_Assembler::deopt_handler_size);

   259   if (stub_size >= code->insts_capacity()) return false;

   260   code->initialize_stubs_size(stub_size);

   261   return true;

   262 }

   265 int Compilation::emit_code_body() {

   266   // emit code

   267   if (!setup_code_buffer(code(), allocator()->num_calls())) {

   268     BAILOUT_("size requested greater than avail code buffer size", 0);

   269   }

   270   code()->initialize_oop_recorder(env()->oop_recorder());

   272   _masm = new C1_MacroAssembler(code());

   273   _masm->set_oop_recorder(env()->oop_recorder());

   275   LIR_Assembler lir_asm(this);

   277   lir_asm.emit_code(hir()->code());

   278   CHECK_BAILOUT_(0);

   280   emit_code_epilog(&lir_asm);

   281   CHECK_BAILOUT_(0);

   283   generate_exception_handler_table();

   285 #ifndef PRODUCT

   286   if (PrintExceptionHandlers && Verbose) {

   287     exception_handler_table()->print();

   288   }

   289 #endif /* PRODUCT */

   291   return frame_map()->framesize();

   292 }

   295 int Compilation::compile_java_method() {

   296   assert(!method()->is_native(), "should not reach here");

   298   if (BailoutOnExceptionHandlers) {

   299     if (method()->has_exception_handlers()) {

   300       bailout("linear scan can't handle exception handlers");

   301     }

   302   }

   304   CHECK_BAILOUT_(no_frame_size);

   306   if (is_profiling() && !method()->ensure_method_data()) {

   307     BAILOUT_("mdo allocation failed", no_frame_size);

   308   }

   310   {

   311     PhaseTraceTime timeit(_t_buildIR);

   312     build_hir();

   313   }

   314   if (BailoutAfterHIR) {

   315     BAILOUT_("Bailing out because of -XX:+BailoutAfterHIR", no_frame_size);

   316   }

   319   {

   320     PhaseTraceTime timeit(_t_emit_lir);

   322     _frame_map = new FrameMap(method(), hir()->number_of_locks(), MAX2(4, hir()->max_stack()));

   323     emit_lir();

   324   }

   325   CHECK_BAILOUT_(no_frame_size);

   327   {

   328     PhaseTraceTime timeit(_t_codeemit);

   329     return emit_code_body();

   330   }

   331 }

   333 void Compilation::install_code(int frame_size) {

   334   // frame_size is in 32-bit words so adjust it intptr_t words

   335   assert(frame_size == frame_map()->framesize(), "must match");

   336   assert(in_bytes(frame_map()->framesize_in_bytes()) % sizeof(intptr_t) == 0, "must be at least pointer aligned");

   337   _env->register_method(

   338     method(),

   339     osr_bci(),

   340     &_offsets,

   341     in_bytes(_frame_map->sp_offset_for_orig_pc()),

   342     code(),

   343     in_bytes(frame_map()->framesize_in_bytes()) / sizeof(intptr_t),

   344     debug_info_recorder()->_oopmaps,

   345     exception_handler_table(),

   346     implicit_exception_table(),

   347     compiler(),

   348     _env->comp_level(),

   349     has_unsafe_access()

   350   );

   351 }

   354 void Compilation::compile_method() {

   355   // setup compilation

   356   initialize();

   358   if (!method()->can_be_compiled()) {

   359     // Prevent race condition 6328518.

   360     // This can happen if the method is obsolete or breakpointed.

   361     bailout("Bailing out because method is not compilable");

   362     return;

   363   }

   365   if (_env->jvmti_can_hotswap_or_post_breakpoint()) {

   366     // We can assert evol_method because method->can_be_compiled is true.

   367     dependency_recorder()->assert_evol_method(method());

   368   }

   370   if (method()->break_at_execute()) {

   371     BREAKPOINT;

   372   }

   374 #ifndef PRODUCT

   375   if (PrintCFGToFile) {

   376     CFGPrinter::print_compilation(this);

   377   }

   378 #endif

   380   // compile method

   381   int frame_size = compile_java_method();

   383   // bailout if method couldn't be compiled

   384   // Note: make sure we mark the method as not compilable!

   385   CHECK_BAILOUT();

   387   if (InstallMethods) {

   388     // install code

   389     PhaseTraceTime timeit(_t_codeinstall);

   390     install_code(frame_size);

   391   }

   392   totalInstructionNodes += Instruction::number_of_instructions();

   393 }

   396 void Compilation::generate_exception_handler_table() {

   397   // Generate an ExceptionHandlerTable from the exception handler

   398   // information accumulated during the compilation.

   399   ExceptionInfoList* info_list = exception_info_list();

   401   if (info_list->length() == 0) {

   402     return;

   403   }

   405   // allocate some arrays for use by the collection code.

   406   const int num_handlers = 5;

   407   GrowableArray<intptr_t>* bcis = new GrowableArray<intptr_t>(num_handlers);

   408   GrowableArray<intptr_t>* scope_depths = new GrowableArray<intptr_t>(num_handlers);

   409   GrowableArray<intptr_t>* pcos = new GrowableArray<intptr_t>(num_handlers);

   411   for (int i = 0; i < info_list->length(); i++) {

   412     ExceptionInfo* info = info_list->at(i);

   413     XHandlers* handlers = info->exception_handlers();

   415     // empty the arrays

   416     bcis->trunc_to(0);

   417     scope_depths->trunc_to(0);

   418     pcos->trunc_to(0);

   420     for (int i = 0; i < handlers->length(); i++) {

   421       XHandler* handler = handlers->handler_at(i);

   422       assert(handler->entry_pco() != -1, "must have been generated");

   424       int e = bcis->find(handler->handler_bci());

   425       if (e >= 0 && scope_depths->at(e) == handler->scope_count()) {

   426         // two different handlers are declared to dispatch to the same

   427         // catch bci.  During parsing we created edges for each

   428         // handler but we really only need one.  The exception handler

   429         // table will also get unhappy if we try to declare both since

   430         // it's nonsensical.  Just skip this handler.

   431         continue;

   432       }

   434       bcis->append(handler->handler_bci());

   435       if (handler->handler_bci() == -1) {

   436         // insert a wildcard handler at scope depth 0 so that the

   437         // exception lookup logic with find it.

   438         scope_depths->append(0);

   439       } else {

   440         scope_depths->append(handler->scope_count());

   441     }

   442       pcos->append(handler->entry_pco());

   444       // stop processing once we hit a catch any

   445       if (handler->is_catch_all()) {

   446         assert(i == handlers->length() - 1, "catch all must be last handler");

   447   }

   448     }

   449     exception_handler_table()->add_subtable(info->pco(), bcis, scope_depths, pcos);

   450   }

   451 }

   454 Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,

   455                          int osr_bci, BufferBlob* buffer_blob)

   456 : _compiler(compiler)

   457 , _env(env)

   458 , _method(method)

   459 , _osr_bci(osr_bci)

   460 , _hir(NULL)

   461 , _max_spills(-1)

   462 , _frame_map(NULL)

   463 , _masm(NULL)

   464 , _has_exception_handlers(false)

   465 , _has_fpu_code(true)   // pessimistic assumption

   466 , _would_profile(false)

   467 , _has_unsafe_access(false)

   468 , _has_method_handle_invokes(false)

   469 , _bailout_msg(NULL)

   470 , _exception_info_list(NULL)

   471 , _allocator(NULL)

   472 , _next_id(0)

   473 , _next_block_id(0)

   474 , _code(buffer_blob)

   475 , _current_instruction(NULL)

   476 #ifndef PRODUCT

   477 , _last_instruction_printed(NULL)

   478 #endif // PRODUCT

   479 {

   480   PhaseTraceTime timeit(_t_compile);

   481   _arena = Thread::current()->resource_area();

   482   _env->set_compiler_data(this);

   483   _exception_info_list = new ExceptionInfoList();

   484   _implicit_exception_table.set_size(0);

   485   compile_method();

   486   if (bailed_out()) {

   487     _env->record_method_not_compilable(bailout_msg(), !TieredCompilation);

   488     if (is_profiling()) {

   489       // Compilation failed, create MDO, which would signal the interpreter

   490       // to start profiling on its own.

   491       _method->ensure_method_data();

   492     }

   493   } else if (is_profiling()) {

   494     ciMethodData *md = method->method_data_or_null();

   495     if (md != NULL) {

   496       md->set_would_profile(_would_profile);

   497     }

   498   }

   499 }

   501 Compilation::~Compilation() {

   502   _env->set_compiler_data(NULL);

   503 }

   506 void Compilation::add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers) {

   507 #ifndef PRODUCT

   508   if (PrintExceptionHandlers && Verbose) {

   509     tty->print_cr("  added exception scope for pco %d", pco);

   510   }

   511 #endif

   512   // Note: we do not have program counters for these exception handlers yet

   513   exception_info_list()->push(new ExceptionInfo(pco, exception_handlers));

   514 }

   517 void Compilation::notice_inlined_method(ciMethod* method) {

   518   _env->notice_inlined_method(method);

   519 }

   522 void Compilation::bailout(const char* msg) {

   523   assert(msg != NULL, "bailout message must exist");

   524   if (!bailed_out()) {

   525     // keep first bailout message

   526     if (PrintBailouts) tty->print_cr("compilation bailout: %s", msg);

   527     _bailout_msg = msg;

   528   }

   529 }

   532 void Compilation::print_timers() {

   533   // 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);

   534   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();

   537   tty->print_cr("    Detailed C1 Timings");

   538   tty->print_cr("       Setup time:        %6.3f s (%4.1f%%)",    timers[_t_setup].seconds(),           (timers[_t_setup].seconds() / total) * 100.0);

   539   tty->print_cr("       Build IR:          %6.3f s (%4.1f%%)",    timers[_t_buildIR].seconds(),         (timers[_t_buildIR].seconds() / total) * 100.0);

   540   tty->print_cr("         Optimize:           %6.3f s (%4.1f%%)", timers[_t_optimizeIR].seconds(),      (timers[_t_optimizeIR].seconds() / total) * 100.0);

   541   tty->print_cr("       Emit LIR:          %6.3f s (%4.1f%%)",    timers[_t_emit_lir].seconds(),        (timers[_t_emit_lir].seconds() / total) * 100.0);

   542   tty->print_cr("         LIR Gen:          %6.3f s (%4.1f%%)",   timers[_t_lirGeneration].seconds(), (timers[_t_lirGeneration].seconds() / total) * 100.0);

   543   tty->print_cr("         Linear Scan:      %6.3f s (%4.1f%%)",   timers[_t_linearScan].seconds(),    (timers[_t_linearScan].seconds() / total) * 100.0);

   544   NOT_PRODUCT(LinearScan::print_timers(timers[_t_linearScan].seconds()));

   545   tty->print_cr("       LIR Schedule:      %6.3f s (%4.1f%%)",    timers[_t_lir_schedule].seconds(),  (timers[_t_lir_schedule].seconds() / total) * 100.0);

   546   tty->print_cr("       Code Emission:     %6.3f s (%4.1f%%)",    timers[_t_codeemit].seconds(),        (timers[_t_codeemit].seconds() / total) * 100.0);

   547   tty->print_cr("       Code Installation: %6.3f s (%4.1f%%)",    timers[_t_codeinstall].seconds(),     (timers[_t_codeinstall].seconds() / total) * 100.0);

   548   tty->print_cr("       Instruction Nodes: %6d nodes",    totalInstructionNodes);

   550   NOT_PRODUCT(LinearScan::print_statistics());

   551 }

   554 #ifndef PRODUCT

   555 void Compilation::compile_only_this_method() {

   556   ResourceMark rm;

   557   fileStream stream(fopen("c1_compile_only", "wt"));

   558   stream.print_cr("# c1 compile only directives");

   559   compile_only_this_scope(&stream, hir()->top_scope());

   560 }

   563 void Compilation::compile_only_this_scope(outputStream* st, IRScope* scope) {

   564   st->print("CompileOnly=");

   565   scope->method()->holder()->name()->print_symbol_on(st);

   566   st->print(".");

   567   scope->method()->name()->print_symbol_on(st);

   568   st->cr();

   569 }

   572 void Compilation::exclude_this_method() {

   573   fileStream stream(fopen(".hotspot_compiler", "at"));

   574   stream.print("exclude ");

   575   method()->holder()->name()->print_symbol_on(&stream);

   576   stream.print(" ");

   577   method()->name()->print_symbol_on(&stream);

   578   stream.cr();

   579   stream.cr();

   580 }

   581 #endif

src/share/vm/c1/c1_Compilation.cpp@c124e2e7463e

src/share/vm/c1/c1_Compilation.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/c1/c1_Compilation.cpp@c124e2e7463e

src/share/vm/c1/c1_Compilation.cpp