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

6958292: C1: Enable parallel compilation
Summary: Enable parallel compilation in C1
Reviewed-by: never, kvn

     1 /*

     2  * Copyright (c) 1999, 2010, 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 "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 // Implementation of Compilation

    72 #ifndef PRODUCT

    74 void Compilation::maybe_print_current_instruction() {

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

    76     _last_instruction_printed = _current_instruction;

    77     _current_instruction->print_line();

    78   }

    79 }

    80 #endif // PRODUCT

    83 DebugInformationRecorder* Compilation::debug_info_recorder() const {

    84   return _env->debug_info();

    85 }

    88 Dependencies* Compilation::dependency_recorder() const {

    89   return _env->dependencies();

    90 }

    93 void Compilation::initialize() {

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

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

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

    97   _env->set_oop_recorder(ooprec);

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

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

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

   101 }

   104 void Compilation::build_hir() {

   105   CHECK_BAILOUT();

   107   // setup ir

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

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

   110     bailout("invalid parsing");

   111     return;

   112   }

   114 #ifndef PRODUCT

   115   if (PrintCFGToFile) {

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

   117   }

   118 #endif

   120 #ifndef PRODUCT

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

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

   123 #endif

   125   _hir->verify();

   127   if (UseC1Optimizations) {

   128     NEEDS_CLEANUP

   129     // optimization

   130     PhaseTraceTime timeit(_t_optimizeIR);

   132     _hir->optimize();

   133   }

   135   _hir->verify();

   137   _hir->split_critical_edges();

   139 #ifndef PRODUCT

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

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

   142 #endif

   144   _hir->verify();

   146   // compute block ordering for code generation

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

   148   _hir->compute_code();

   150   if (UseGlobalValueNumbering) {

   151     ResourceMark rm;

   152     int instructions = Instruction::number_of_instructions();

   153     GlobalValueNumbering gvn(_hir);

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

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

   156   }

   158   // compute use counts after global value numbering

   159   _hir->compute_use_counts();

   161 #ifndef PRODUCT

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

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

   164 #endif

   166   _hir->verify();

   167 }

   170 void Compilation::emit_lir() {

   171   CHECK_BAILOUT();

   173   LIRGenerator gen(this, method());

   174   {

   175     PhaseTraceTime timeit(_t_lirGeneration);

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

   177   }

   179   CHECK_BAILOUT();

   181   {

   182     PhaseTraceTime timeit(_t_linearScan);

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

   185     set_allocator(allocator);

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

   187     allocator->do_linear_scan();

   188     CHECK_BAILOUT();

   190     _max_spills = allocator->max_spills();

   191   }

   193   if (BailoutAfterLIR) {

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

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

   196     }

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

   198   }

   199 }

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

   203   CHECK_BAILOUT();

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

   207   // generate code or slow cases

   208   assembler->emit_slow_case_stubs();

   209   CHECK_BAILOUT();

   211   // generate exception adapters

   212   assembler->emit_exception_entries(exception_info_list());

   213   CHECK_BAILOUT();

   215   // Generate code for exception handler.

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

   217   CHECK_BAILOUT();

   219   // Generate code for deopt handler.

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

   221   CHECK_BAILOUT();

   223   // Generate code for MethodHandle deopt handler.  We can use the

   224   // same code as for the normal deopt handler, we just need a

   225   // different entry point address.

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

   227   CHECK_BAILOUT();

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

   230   // dispatch to the caller.

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

   233   // done

   234   masm()->flush();

   235 }

   238 void Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {

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

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

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

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

   243                                         locs_buffer_size / sizeof(relocInfo));

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

   245   // Call stubs + deopt/exception handler

   246   code->initialize_stubs_size((call_stub_estimate * LIR_Assembler::call_stub_size) +

   247                               LIR_Assembler::exception_handler_size +

   248                               LIR_Assembler::deopt_handler_size);

   249 }

   252 int Compilation::emit_code_body() {

   253   // emit code

   254   setup_code_buffer(code(), allocator()->num_calls());

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

   257   _masm = new C1_MacroAssembler(code());

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

   260   LIR_Assembler lir_asm(this);

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

   263   CHECK_BAILOUT_(0);

   265   emit_code_epilog(&lir_asm);

   266   CHECK_BAILOUT_(0);

   268   generate_exception_handler_table();

   270 #ifndef PRODUCT

   271   if (PrintExceptionHandlers && Verbose) {

   272     exception_handler_table()->print();

   273   }

   274 #endif /* PRODUCT */

   276   return frame_map()->framesize();

   277 }

   280 int Compilation::compile_java_method() {

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

   283   if (BailoutOnExceptionHandlers) {

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

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

   286     }

   287   }

   289   CHECK_BAILOUT_(no_frame_size);

   291   {

   292     PhaseTraceTime timeit(_t_buildIR);

   293   build_hir();

   294   }

   295   if (BailoutAfterHIR) {

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

   297   }

   300   {

   301     PhaseTraceTime timeit(_t_emit_lir);

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

   304     emit_lir();

   305   }

   306   CHECK_BAILOUT_(no_frame_size);

   308   {

   309     PhaseTraceTime timeit(_t_codeemit);

   310     return emit_code_body();

   311   }

   312 }

   314 void Compilation::install_code(int frame_size) {

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

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

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

   318   _env->register_method(

   319     method(),

   320     osr_bci(),

   321     &_offsets,

   322     in_bytes(_frame_map->sp_offset_for_orig_pc()),

   323     code(),

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

   325     debug_info_recorder()->_oopmaps,

   326     exception_handler_table(),

   327     implicit_exception_table(),

   328     compiler(),

   329     _env->comp_level(),

   330     true,

   331     has_unsafe_access()

   332   );

   333 }

   336 void Compilation::compile_method() {

   337   // setup compilation

   338   initialize();

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

   341     // Prevent race condition 6328518.

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

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

   344     return;

   345   }

   347   if (_env->jvmti_can_hotswap_or_post_breakpoint()) {

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

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

   350   }

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

   353     BREAKPOINT;

   354   }

   356 #ifndef PRODUCT

   357   if (PrintCFGToFile) {

   358     CFGPrinter::print_compilation(this);

   359   }

   360 #endif

   362   // compile method

   363   int frame_size = compile_java_method();

   365   // bailout if method couldn't be compiled

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

   367   CHECK_BAILOUT();

   369   if (InstallMethods) {

   370     // install code

   371     PhaseTraceTime timeit(_t_codeinstall);

   372     install_code(frame_size);

   373   }

   374   totalInstructionNodes += Instruction::number_of_instructions();

   375 }

   378 void Compilation::generate_exception_handler_table() {

   379   // Generate an ExceptionHandlerTable from the exception handler

   380   // information accumulated during the compilation.

   381   ExceptionInfoList* info_list = exception_info_list();

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

   384     return;

   385   }

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

   388   const int num_handlers = 5;

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

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

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

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

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

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

   397     // empty the arrays

   398     bcis->trunc_to(0);

   399     scope_depths->trunc_to(0);

   400     pcos->trunc_to(0);

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

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

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

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

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

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

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

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

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

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

   413         continue;

   414       }

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

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

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

   419         // exception lookup logic with find it.

   420         scope_depths->append(0);

   421       } else {

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

   423     }

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

   426       // stop processing once we hit a catch any

   427       if (handler->is_catch_all()) {

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

   429   }

   430     }

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

   432   }

   433 }

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

   437                          int osr_bci, BufferBlob* buffer_blob)

   438 : _compiler(compiler)

   439 , _env(env)

   440 , _method(method)

   441 , _osr_bci(osr_bci)

   442 , _hir(NULL)

   443 , _max_spills(-1)

   444 , _frame_map(NULL)

   445 , _masm(NULL)

   446 , _has_exception_handlers(false)

   447 , _has_fpu_code(true)   // pessimistic assumption

   448 , _has_unsafe_access(false)

   449 , _bailout_msg(NULL)

   450 , _exception_info_list(NULL)

   451 , _allocator(NULL)

   452 , _next_id(0)

   453 , _next_block_id(0)

   454 , _code(buffer_blob->instructions_begin(),

   455         buffer_blob->instructions_size())

   456 , _current_instruction(NULL)

   457 #ifndef PRODUCT

   458 , _last_instruction_printed(NULL)

   459 #endif // PRODUCT

   460 {

   461   PhaseTraceTime timeit(_t_compile);

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

   464   _env->set_compiler_data(this);

   465   _exception_info_list = new ExceptionInfoList();

   466   _implicit_exception_table.set_size(0);

   467   compile_method();

   468 }

   470 Compilation::~Compilation() {

   471   _env->set_compiler_data(NULL);

   472 }

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

   476 #ifndef PRODUCT

   477   if (PrintExceptionHandlers && Verbose) {

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

   479   }

   480 #endif

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

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

   483 }

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

   487   _env->notice_inlined_method(method);

   488 }

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

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

   493   if (!bailed_out()) {

   494     // keep first bailout message

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

   496     _bailout_msg = msg;

   497   }

   498 }

   501 void Compilation::print_timers() {

   502   // 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);

   503   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();

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

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

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

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

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

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

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

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

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

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

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

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

   519   NOT_PRODUCT(LinearScan::print_statistics());

   520 }

   523 #ifndef PRODUCT

   524 void Compilation::compile_only_this_method() {

   525   ResourceMark rm;

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

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

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

   529 }

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

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

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

   535   st->print(".");

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

   537   st->cr();

   538 }

   541 void Compilation::exclude_this_method() {

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

   543   stream.print("exclude ");

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

   545   stream.print(" ");

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

   547   stream.cr();

   548   stream.cr();

   549 }

   550 #endif

src/share/vm/c1/c1_Compilation.cpp@b812ff5abc73

src/share/vm/c1/c1_Compilation.cpp

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

src/share/vm/c1/c1_Compilation.cpp@b812ff5abc73

src/share/vm/c1/c1_Compilation.cpp