jdk8-mips64-public/hotspot: src/share/vm/shark/sharkCompiler.cpp@e863062e521d

7032458: Zero and Shark fixes
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

     1 /*

     2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2008, 2009, 2010, 2011 Red Hat, Inc.

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

     5  *

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

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

     8  * published by the Free Software Foundation.

     9  *

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

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

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

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

    14  * accompanied this code).

    15  *

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

    17  * 2 along with this work; if not, write to the Free Software Foundation,

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

    19  *

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

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

    22  * questions.

    23  *

    24  */

    26 #include "precompiled.hpp"

    27 #include "ci/ciEnv.hpp"

    28 #include "ci/ciMethod.hpp"

    29 #include "code/debugInfoRec.hpp"

    30 #include "code/dependencies.hpp"

    31 #include "code/exceptionHandlerTable.hpp"

    32 #include "code/oopRecorder.hpp"

    33 #include "compiler/abstractCompiler.hpp"

    34 #include "compiler/oopMap.hpp"

    35 #include "shark/llvmHeaders.hpp"

    36 #include "shark/sharkBuilder.hpp"

    37 #include "shark/sharkCodeBuffer.hpp"

    38 #include "shark/sharkCompiler.hpp"

    39 #include "shark/sharkContext.hpp"

    40 #include "shark/sharkEntry.hpp"

    41 #include "shark/sharkFunction.hpp"

    42 #include "shark/sharkMemoryManager.hpp"

    43 #include "shark/sharkNativeWrapper.hpp"

    44 #include "shark/shark_globals.hpp"

    45 #include "utilities/debug.hpp"

    47 #include <fnmatch.h>

    49 using namespace llvm;

    51 #if SHARK_LLVM_VERSION >= 27

    52 namespace {

    53   cl::opt<std::string>

    54   MCPU("mcpu");

    56   cl::list<std::string>

    57   MAttrs("mattr",

    58          cl::CommaSeparated);

    59 }

    60 #endif

    62 SharkCompiler::SharkCompiler()

    63   : AbstractCompiler() {

    64   // Create the lock to protect the memory manager and execution engine

    65   _execution_engine_lock = new Monitor(Mutex::leaf, "SharkExecutionEngineLock");

    66   MutexLocker locker(execution_engine_lock());

    68   // Make LLVM safe for multithreading

    69   if (!llvm_start_multithreaded())

    70     fatal("llvm_start_multithreaded() failed");

    72   // Initialize the native target

    73   InitializeNativeTarget();

    75   // Create the two contexts which we'll use

    76   _normal_context = new SharkContext("normal");

    77   _native_context = new SharkContext("native");

    79   // Create the memory manager

    80   _memory_manager = new SharkMemoryManager();

    82 #if SHARK_LLVM_VERSION >= 27

    83   // Finetune LLVM for the current host CPU.

    84   StringMap<bool> Features;

    85   bool gotCpuFeatures = llvm::sys::getHostCPUFeatures(Features);

    86   std::string cpu("-mcpu=" + llvm::sys::getHostCPUName());

    88   std::vector<const char*> args;

    89   args.push_back(""); // program name

    90   args.push_back(cpu.c_str());

    92   std::string mattr("-mattr=");

    93   if(gotCpuFeatures){

    94     for(StringMap<bool>::iterator I = Features.begin(),

    95       E = Features.end(); I != E; ++I){

    96       if(I->second){

    97         std::string attr(I->first());

    98         mattr+="+"+attr+",";

    99       }

   100     }

   101     args.push_back(mattr.c_str());

   102   }

   104   args.push_back(0);  // terminator

   105   cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]);

   107   // Create the JIT

   108   std::string ErrorMsg;

   110   EngineBuilder builder(_normal_context->module());

   111   builder.setMCPU(MCPU);

   112   builder.setMAttrs(MAttrs);

   113   builder.setJITMemoryManager(memory_manager());

   114   builder.setEngineKind(EngineKind::JIT);

   115   builder.setErrorStr(&ErrorMsg);

   116   _execution_engine = builder.create();

   118   if (!execution_engine()) {

   119     if (!ErrorMsg.empty())

   120       printf("Error while creating Shark JIT: %s\n",ErrorMsg.c_str());

   121     else

   122       printf("Unknown error while creating Shark JIT\n");

   123     exit(1);

   124   }

   126   execution_engine()->addModule(

   127     _native_context->module());

   128 #else

   129   _execution_engine = ExecutionEngine::createJIT(

   130     _normal_context->module_provider(),

   131     NULL, memory_manager(), CodeGenOpt::Default);

   132   execution_engine()->addModuleProvider(

   133     _native_context->module_provider());

   134 #endif

   136   // All done

   137   mark_initialized();

   138 }

   140 void SharkCompiler::initialize() {

   141   ShouldNotCallThis();

   142 }

   144 void SharkCompiler::compile_method(ciEnv*    env,

   145                                    ciMethod* target,

   146                                    int       entry_bci) {

   147   assert(is_initialized(), "should be");

   148   ResourceMark rm;

   149   const char *name = methodname(

   150     target->holder()->name()->as_utf8(), target->name()->as_utf8());

   152   // Do the typeflow analysis

   153   ciTypeFlow *flow;

   154   if (entry_bci == InvocationEntryBci)

   155     flow = target->get_flow_analysis();

   156   else

   157     flow = target->get_osr_flow_analysis(entry_bci);

   158   if (flow->failing())

   159     return;

   160   if (SharkPrintTypeflowOf != NULL) {

   161     if (!fnmatch(SharkPrintTypeflowOf, name, 0))

   162       flow->print_on(tty);

   163   }

   165   // Create the recorders

   166   Arena arena;

   167   env->set_oop_recorder(new OopRecorder(&arena));

   168   OopMapSet oopmaps;

   169   env->set_debug_info(new DebugInformationRecorder(env->oop_recorder()));

   170   env->debug_info()->set_oopmaps(&oopmaps);

   171   env->set_dependencies(new Dependencies(env));

   173   // Create the code buffer and builder

   174   CodeBuffer hscb("Shark", 256 * K, 64 * K);

   175   hscb.initialize_oop_recorder(env->oop_recorder());

   176   MacroAssembler *masm = new MacroAssembler(&hscb);

   177   SharkCodeBuffer cb(masm);

   178   SharkBuilder builder(&cb);

   180   // Emit the entry point

   181   SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));

   183   // Build the LLVM IR for the method

   184   Function *function = SharkFunction::build(env, &builder, flow, name);

   186   // Generate native code.  It's unpleasant that we have to drop into

   187   // the VM to do this -- it blocks safepoints -- but I can't see any

   188   // other way to handle the locking.

   189   {

   190     ThreadInVMfromNative tiv(JavaThread::current());

   191     generate_native_code(entry, function, name);

   192   }

   194   // Install the method into the VM

   195   CodeOffsets offsets;

   196   offsets.set_value(CodeOffsets::Deopt, 0);

   197   offsets.set_value(CodeOffsets::Exceptions, 0);

   198   offsets.set_value(CodeOffsets::Verified_Entry,

   199                     target->is_static() ? 0 : wordSize);

   201   ExceptionHandlerTable handler_table;

   202   ImplicitExceptionTable inc_table;

   204   env->register_method(target,

   205                        entry_bci,

   206                        &offsets,

   207                        0,

   208                        &hscb,

   209                        0,

   210                        &oopmaps,

   211                        &handler_table,

   212                        &inc_table,

   213                        this,

   214                        env->comp_level(),

   215                        false,

   216                        false);

   217 }

   219 nmethod* SharkCompiler::generate_native_wrapper(MacroAssembler* masm,

   220                                                 methodHandle    target,

   221                                                 int             compile_id,

   222                                                 BasicType*      arg_types,

   223                                                 BasicType       return_type) {

   224   assert(is_initialized(), "should be");

   225   ResourceMark rm;

   226   const char *name = methodname(

   227     target->klass_name()->as_utf8(), target->name()->as_utf8());

   229   // Create the code buffer and builder

   230   SharkCodeBuffer cb(masm);

   231   SharkBuilder builder(&cb);

   233   // Emit the entry point

   234   SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));

   236   // Build the LLVM IR for the method

   237   SharkNativeWrapper *wrapper = SharkNativeWrapper::build(

   238     &builder, target, name, arg_types, return_type);

   240   // Generate native code

   241   generate_native_code(entry, wrapper->function(), name);

   243   // Return the nmethod for installation in the VM

   244   return nmethod::new_native_nmethod(target,

   245                                      compile_id,

   246                                      masm->code(),

   247                                      0,

   248                                      0,

   249                                      wrapper->frame_size(),

   250                                      wrapper->receiver_offset(),

   251                                      wrapper->lock_offset(),

   252                                      wrapper->oop_maps());

   253 }

   255 void SharkCompiler::generate_native_code(SharkEntry* entry,

   256                                          Function*   function,

   257                                          const char* name) {

   258   // Print the LLVM bitcode, if requested

   259   if (SharkPrintBitcodeOf != NULL) {

   260     if (!fnmatch(SharkPrintBitcodeOf, name, 0))

   261       function->dump();

   262   }

   264   // Compile to native code

   265   address code = NULL;

   266   context()->add_function(function);

   267   {

   268     MutexLocker locker(execution_engine_lock());

   269     free_queued_methods();

   271     if (SharkPrintAsmOf != NULL) {

   272 #if SHARK_LLVM_VERSION >= 27

   273 #ifndef NDEBUG

   274       if (!fnmatch(SharkPrintAsmOf, name, 0)) {

   275         llvm::SetCurrentDebugType(X86_ONLY("x86-emitter") NOT_X86("jit"));

   276         llvm::DebugFlag = true;

   277       }

   278       else {

   279         llvm::SetCurrentDebugType("");

   280         llvm::DebugFlag = false;

   281       }

   282 #endif // !NDEBUG

   283 #else

   284       // NB you need to patch LLVM with http://tinyurl.com/yf3baln for this

   285       std::vector<const char*> args;

   286       args.push_back(""); // program name

   287       if (!fnmatch(SharkPrintAsmOf, name, 0))

   288         args.push_back("-debug-only=x86-emitter");

   289       else

   290         args.push_back("-debug-only=none");

   291       args.push_back(0);  // terminator

   292       cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]);

   293 #endif // SHARK_LLVM_VERSION

   294     }

   295     memory_manager()->set_entry_for_function(function, entry);

   296     code = (address) execution_engine()->getPointerToFunction(function);

   297   }

   298   entry->set_entry_point(code);

   299   entry->set_function(function);

   300   entry->set_context(context());

   301   address code_start = entry->code_start();

   302   address code_limit = entry->code_limit();

   304   // Register generated code for profiling, etc

   305   if (JvmtiExport::should_post_dynamic_code_generated())

   306     JvmtiExport::post_dynamic_code_generated(name, code_start, code_limit);

   308   // Print debug information, if requested

   309   if (SharkTraceInstalls) {

   310     tty->print_cr(

   311       " [%p-%p): %s (%d bytes code)",

   312       code_start, code_limit, name, code_limit - code_start);

   313   }

   314 }

   316 void SharkCompiler::free_compiled_method(address code) {

   317   // This method may only be called when the VM is at a safepoint.

   318   // All _thread_in_vm threads will be waiting for the safepoint to

   319   // finish with the exception of the VM thread, so we can consider

   320   // ourself the owner of the execution engine lock even though we

   321   // can't actually acquire it at this time.

   322   assert(Thread::current()->is_VM_thread(), "must be called by VM thread");

   323   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");

   325   SharkEntry *entry = (SharkEntry *) code;

   326   entry->context()->push_to_free_queue(entry->function());

   327 }

   329 void SharkCompiler::free_queued_methods() {

   330   // The free queue is protected by the execution engine lock

   331   assert(execution_engine_lock()->owned_by_self(), "should be");

   333   while (true) {

   334     Function *function = context()->pop_from_free_queue();

   335     if (function == NULL)

   336       break;

   338     execution_engine()->freeMachineCodeForFunction(function);

   339     function->eraseFromParent();

   340   }

   341 }

   343 const char* SharkCompiler::methodname(const char* klass, const char* method) {

   344   char *buf = NEW_RESOURCE_ARRAY(char, strlen(klass) + 2 + strlen(method) + 1);

   346   char *dst = buf;

   347   for (const char *c = klass; *c; c++) {

   348     if (*c == '/')

   349       *(dst++) = '.';

   350     else

   351       *(dst++) = *c;

   352   }

   353   *(dst++) = ':';

   354   *(dst++) = ':';

   355   for (const char *c = method; *c; c++) {

   356     *(dst++) = *c;

   357   }

   358   *(dst++) = '\0';

   359   return buf;

   360 }

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

src/share/vm/shark/sharkCompiler.cpp@e863062e521d

src/share/vm/shark/sharkCompiler.cpp