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

7177003: C1: LogCompilation support
Summary: add LogCompilation support in C1 - both client and tiered mode.
Reviewed-by: twisti, kvn

     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"

    35 #include "compiler/compileLog.hpp"

    38 typedef enum {

    39   _t_compile,

    40   _t_setup,

    41   _t_optimizeIR,

    42   _t_buildIR,

    43   _t_emit_lir,

    44   _t_linearScan,

    45   _t_lirGeneration,

    46   _t_lir_schedule,

    47   _t_codeemit,

    48   _t_codeinstall,

    49   max_phase_timers

    50 } TimerName;

    52 static const char * timer_name[] = {

    53   "compile",

    54   "setup",

    55   "optimizeIR",

    56   "buildIR",

    57   "emit_lir",

    58   "linearScan",

    59   "lirGeneration",

    60   "lir_schedule",

    61   "codeemit",

    62   "codeinstall"

    63 };

    65 static elapsedTimer timers[max_phase_timers];

    66 static int totalInstructionNodes = 0;

    68 class PhaseTraceTime: public TraceTime {

    69  private:

    70   JavaThread* _thread;

    71   CompileLog* _log;

    73  public:

    74   PhaseTraceTime(TimerName timer)

    75   : TraceTime("", &timers[timer], CITime || CITimeEach, Verbose), _log(NULL) {

    76     if (Compilation::current() != NULL) {

    77       _log = Compilation::current()->log();

    78     }

    80     if (_log != NULL) {

    81       _log->begin_head("phase name='%s'", timer_name[timer]);

    82       _log->stamp();

    83       _log->end_head();

    84     }

    85   }

    87   ~PhaseTraceTime() {

    88     if (_log != NULL)

    89       _log->done("phase");

    90   }

    91 };

    93 // Implementation of Compilation

    96 #ifndef PRODUCT

    98 void Compilation::maybe_print_current_instruction() {

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

   100     _last_instruction_printed = _current_instruction;

   101     _current_instruction->print_line();

   102   }

   103 }

   104 #endif // PRODUCT

   107 DebugInformationRecorder* Compilation::debug_info_recorder() const {

   108   return _env->debug_info();

   109 }

   112 Dependencies* Compilation::dependency_recorder() const {

   113   return _env->dependencies();

   114 }

   117 void Compilation::initialize() {

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

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

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

   121   _env->set_oop_recorder(ooprec);

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

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

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

   125 }

   128 void Compilation::build_hir() {

   129   CHECK_BAILOUT();

   131   // setup ir

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

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

   134     bailout("invalid parsing");

   135     return;

   136   }

   138 #ifndef PRODUCT

   139   if (PrintCFGToFile) {

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

   141   }

   142 #endif

   144 #ifndef PRODUCT

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

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

   147 #endif

   149   _hir->verify();

   151   if (UseC1Optimizations) {

   152     NEEDS_CLEANUP

   153     // optimization

   154     PhaseTraceTime timeit(_t_optimizeIR);

   156     _hir->optimize();

   157   }

   159   _hir->verify();

   161   _hir->split_critical_edges();

   163 #ifndef PRODUCT

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

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

   166 #endif

   168   _hir->verify();

   170   // compute block ordering for code generation

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

   172   _hir->compute_code();

   174   if (UseGlobalValueNumbering) {

   175     ResourceMark rm;

   176     int instructions = Instruction::number_of_instructions();

   177     GlobalValueNumbering gvn(_hir);

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

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

   180   }

   182   // compute use counts after global value numbering

   183   _hir->compute_use_counts();

   185 #ifndef PRODUCT

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

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

   188 #endif

   190   _hir->verify();

   191 }

   194 void Compilation::emit_lir() {

   195   CHECK_BAILOUT();

   197   LIRGenerator gen(this, method());

   198   {

   199     PhaseTraceTime timeit(_t_lirGeneration);

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

   201   }

   203   CHECK_BAILOUT();

   205   {

   206     PhaseTraceTime timeit(_t_linearScan);

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

   209     set_allocator(allocator);

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

   211     allocator->do_linear_scan();

   212     CHECK_BAILOUT();

   214     _max_spills = allocator->max_spills();

   215   }

   217   if (BailoutAfterLIR) {

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

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

   220     }

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

   222   }

   223 }

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

   227   CHECK_BAILOUT();

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

   231   // generate code or slow cases

   232   assembler->emit_slow_case_stubs();

   233   CHECK_BAILOUT();

   235   // generate exception adapters

   236   assembler->emit_exception_entries(exception_info_list());

   237   CHECK_BAILOUT();

   239   // Generate code for exception handler.

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

   241   CHECK_BAILOUT();

   243   // Generate code for deopt handler.

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

   245   CHECK_BAILOUT();

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

   248   if (has_method_handle_invokes()) {

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

   250     // just need a different entry point address.

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

   252     CHECK_BAILOUT();

   253   }

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

   256   // dispatch to the caller.

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

   259   // done

   260   masm()->flush();

   261 }

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

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

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

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

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

   269                                         locs_buffer_size / sizeof(relocInfo));

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

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

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

   273                    LIR_Assembler::exception_handler_size +

   274                    (2 * LIR_Assembler::deopt_handler_size);

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

   276   code->initialize_stubs_size(stub_size);

   277   return true;

   278 }

   281 int Compilation::emit_code_body() {

   282   // emit code

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

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

   285   }

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

   288   _masm = new C1_MacroAssembler(code());

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

   291   LIR_Assembler lir_asm(this);

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

   294   CHECK_BAILOUT_(0);

   296   emit_code_epilog(&lir_asm);

   297   CHECK_BAILOUT_(0);

   299   generate_exception_handler_table();

   301 #ifndef PRODUCT

   302   if (PrintExceptionHandlers && Verbose) {

   303     exception_handler_table()->print();

   304   }

   305 #endif /* PRODUCT */

   307   return frame_map()->framesize();

   308 }

   311 int Compilation::compile_java_method() {

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

   314   if (BailoutOnExceptionHandlers) {

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

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

   317     }

   318   }

   320   CHECK_BAILOUT_(no_frame_size);

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

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

   324   }

   326   {

   327     PhaseTraceTime timeit(_t_buildIR);

   328     build_hir();

   329   }

   330   if (BailoutAfterHIR) {

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

   332   }

   335   {

   336     PhaseTraceTime timeit(_t_emit_lir);

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

   339     emit_lir();

   340   }

   341   CHECK_BAILOUT_(no_frame_size);

   343   {

   344     PhaseTraceTime timeit(_t_codeemit);

   345     return emit_code_body();

   346   }

   347 }

   349 void Compilation::install_code(int frame_size) {

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

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

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

   353   _env->register_method(

   354     method(),

   355     osr_bci(),

   356     &_offsets,

   357     in_bytes(_frame_map->sp_offset_for_orig_pc()),

   358     code(),

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

   360     debug_info_recorder()->_oopmaps,

   361     exception_handler_table(),

   362     implicit_exception_table(),

   363     compiler(),

   364     _env->comp_level(),

   365     has_unsafe_access(),

   366     SharedRuntime::is_wide_vector(max_vector_size())

   367   );

   368 }

   371 void Compilation::compile_method() {

   372   // setup compilation

   373   initialize();

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

   376     // Prevent race condition 6328518.

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

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

   379     return;

   380   }

   382   if (_env->jvmti_can_hotswap_or_post_breakpoint()) {

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

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

   385   }

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

   388     BREAKPOINT;

   389   }

   391 #ifndef PRODUCT

   392   if (PrintCFGToFile) {

   393     CFGPrinter::print_compilation(this);

   394   }

   395 #endif

   397   // compile method

   398   int frame_size = compile_java_method();

   400   // bailout if method couldn't be compiled

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

   402   CHECK_BAILOUT();

   404   if (InstallMethods) {

   405     // install code

   406     PhaseTraceTime timeit(_t_codeinstall);

   407     install_code(frame_size);

   408   }

   410   if (log() != NULL) // Print code cache state into compiler log

   411     log()->code_cache_state();

   413   totalInstructionNodes += Instruction::number_of_instructions();

   414 }

   417 void Compilation::generate_exception_handler_table() {

   418   // Generate an ExceptionHandlerTable from the exception handler

   419   // information accumulated during the compilation.

   420   ExceptionInfoList* info_list = exception_info_list();

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

   423     return;

   424   }

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

   427   const int num_handlers = 5;

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

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

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

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

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

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

   436     // empty the arrays

   437     bcis->trunc_to(0);

   438     scope_depths->trunc_to(0);

   439     pcos->trunc_to(0);

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

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

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

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

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

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

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

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

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

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

   452         continue;

   453       }

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

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

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

   458         // exception lookup logic with find it.

   459         scope_depths->append(0);

   460       } else {

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

   462     }

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

   465       // stop processing once we hit a catch any

   466       if (handler->is_catch_all()) {

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

   468   }

   469     }

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

   471   }

   472 }

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

   476                          int osr_bci, BufferBlob* buffer_blob)

   477 : _compiler(compiler)

   478 , _env(env)

   479 , _log(env->log())

   480 , _method(method)

   481 , _osr_bci(osr_bci)

   482 , _hir(NULL)

   483 , _max_spills(-1)

   484 , _frame_map(NULL)

   485 , _masm(NULL)

   486 , _has_exception_handlers(false)

   487 , _has_fpu_code(true)   // pessimistic assumption

   488 , _would_profile(false)

   489 , _has_unsafe_access(false)

   490 , _has_method_handle_invokes(false)

   491 , _bailout_msg(NULL)

   492 , _exception_info_list(NULL)

   493 , _allocator(NULL)

   494 , _next_id(0)

   495 , _next_block_id(0)

   496 , _code(buffer_blob)

   497 , _current_instruction(NULL)

   498 #ifndef PRODUCT

   499 , _last_instruction_printed(NULL)

   500 #endif // PRODUCT

   501 {

   502   PhaseTraceTime timeit(_t_compile);

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

   504   _env->set_compiler_data(this);

   505   _exception_info_list = new ExceptionInfoList();

   506   _implicit_exception_table.set_size(0);

   507   compile_method();

   508   if (bailed_out()) {

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

   510     if (is_profiling()) {

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

   512       // to start profiling on its own.

   513       _method->ensure_method_data();

   514     }

   515   } else if (is_profiling()) {

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

   517     if (md != NULL) {

   518       md->set_would_profile(_would_profile);

   519     }

   520   }

   521 }

   523 Compilation::~Compilation() {

   524   _env->set_compiler_data(NULL);

   525 }

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

   529 #ifndef PRODUCT

   530   if (PrintExceptionHandlers && Verbose) {

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

   532   }

   533 #endif

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

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

   536 }

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

   540   _env->notice_inlined_method(method);

   541 }

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

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

   546   if (!bailed_out()) {

   547     // keep first bailout message

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

   549     _bailout_msg = msg;

   550   }

   551 }

   554 void Compilation::print_timers() {

   555   // 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);

   556   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();

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

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

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

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

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

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

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

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

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

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

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

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

   572   NOT_PRODUCT(LinearScan::print_statistics());

   573 }

   576 #ifndef PRODUCT

   577 void Compilation::compile_only_this_method() {

   578   ResourceMark rm;

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

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

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

   582 }

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

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

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

   588   st->print(".");

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

   590   st->cr();

   591 }

   594 void Compilation::exclude_this_method() {

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

   596   stream.print("exclude ");

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

   598   stream.print(" ");

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

   600   stream.cr();

   601   stream.cr();

   602 }

   603 #endif

src/share/vm/c1/c1_Compilation.cpp@c3e799c37717

src/share/vm/c1/c1_Compilation.cpp

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

src/share/vm/c1/c1_Compilation.cpp@c3e799c37717

src/share/vm/c1/c1_Compilation.cpp