5cef85023b
Files that use ResourceMark are missing the include of resourceArea.hpp Reviewed-by: tschatzl, jwilhelm
373 lines
12 KiB
C++
373 lines
12 KiB
C++
/*
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* Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2008, 2009, 2010, 2011 Red Hat, Inc.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "ci/ciEnv.hpp"
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#include "ci/ciMethod.hpp"
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#include "code/debugInfoRec.hpp"
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#include "code/dependencies.hpp"
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#include "code/exceptionHandlerTable.hpp"
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#include "code/oopRecorder.hpp"
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#include "compiler/abstractCompiler.hpp"
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#include "compiler/oopMap.hpp"
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#include "memory/resourceArea.hpp"
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#include "shark/llvmHeaders.hpp"
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#include "shark/sharkBuilder.hpp"
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#include "shark/sharkCodeBuffer.hpp"
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#include "shark/sharkCompiler.hpp"
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#include "shark/sharkContext.hpp"
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#include "shark/sharkEntry.hpp"
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#include "shark/sharkFunction.hpp"
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#include "shark/sharkMemoryManager.hpp"
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#include "shark/sharkNativeWrapper.hpp"
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#include "shark/shark_globals.hpp"
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#include "utilities/debug.hpp"
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#include <fnmatch.h>
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using namespace llvm;
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namespace {
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cl::opt<std::string>
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MCPU("mcpu");
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cl::list<std::string>
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MAttrs("mattr",
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cl::CommaSeparated);
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}
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SharkCompiler::SharkCompiler()
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: AbstractCompiler(shark) {
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// Create the lock to protect the memory manager and execution engine
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_execution_engine_lock = new Monitor(Mutex::leaf, "SharkExecutionEngineLock");
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MutexLocker locker(execution_engine_lock());
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// Make LLVM safe for multithreading
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if (!llvm_start_multithreaded())
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fatal("llvm_start_multithreaded() failed");
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// Initialize the native target
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InitializeNativeTarget();
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// MCJIT require a native AsmPrinter
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InitializeNativeTargetAsmPrinter();
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// Create the two contexts which we'll use
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_normal_context = new SharkContext("normal");
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_native_context = new SharkContext("native");
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// Create the memory manager
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_memory_manager = new SharkMemoryManager();
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// Finetune LLVM for the current host CPU.
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StringMap<bool> Features;
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bool gotCpuFeatures = llvm::sys::getHostCPUFeatures(Features);
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std::string cpu("-mcpu=" + llvm::sys::getHostCPUName());
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std::vector<const char*> args;
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args.push_back(""); // program name
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args.push_back(cpu.c_str());
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std::string mattr("-mattr=");
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if(gotCpuFeatures){
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for(StringMap<bool>::iterator I = Features.begin(),
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E = Features.end(); I != E; ++I){
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if(I->second){
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std::string attr(I->first());
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mattr+="+"+attr+",";
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}
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}
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args.push_back(mattr.c_str());
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}
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args.push_back(0); // terminator
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cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]);
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// Create the JIT
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std::string ErrorMsg;
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EngineBuilder builder(_normal_context->module());
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builder.setMCPU(MCPU);
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builder.setMAttrs(MAttrs);
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builder.setJITMemoryManager(memory_manager());
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builder.setEngineKind(EngineKind::JIT);
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builder.setErrorStr(&ErrorMsg);
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if (! fnmatch(SharkOptimizationLevel, "None", 0)) {
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tty->print_cr("Shark optimization level set to: None");
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builder.setOptLevel(llvm::CodeGenOpt::None);
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} else if (! fnmatch(SharkOptimizationLevel, "Less", 0)) {
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tty->print_cr("Shark optimization level set to: Less");
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builder.setOptLevel(llvm::CodeGenOpt::Less);
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} else if (! fnmatch(SharkOptimizationLevel, "Aggressive", 0)) {
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tty->print_cr("Shark optimization level set to: Aggressive");
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builder.setOptLevel(llvm::CodeGenOpt::Aggressive);
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} // else Default is selected by, well, default :-)
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_execution_engine = builder.create();
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if (!execution_engine()) {
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if (!ErrorMsg.empty())
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printf("Error while creating Shark JIT: %s\n",ErrorMsg.c_str());
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else
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printf("Unknown error while creating Shark JIT\n");
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exit(1);
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}
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execution_engine()->addModule(_native_context->module());
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// All done
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set_state(initialized);
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}
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void SharkCompiler::initialize() {
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ShouldNotCallThis();
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}
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void SharkCompiler::compile_method(ciEnv* env,
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ciMethod* target,
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int entry_bci,
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DirectiveSet* directive) {
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assert(is_initialized(), "should be");
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ResourceMark rm;
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const char *name = methodname(
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target->holder()->name()->as_utf8(), target->name()->as_utf8());
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// Do the typeflow analysis
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ciTypeFlow *flow;
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if (entry_bci == InvocationEntryBci)
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flow = target->get_flow_analysis();
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else
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flow = target->get_osr_flow_analysis(entry_bci);
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if (flow->failing())
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return;
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if (SharkPrintTypeflowOf != NULL) {
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if (!fnmatch(SharkPrintTypeflowOf, name, 0))
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flow->print_on(tty);
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}
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// Create the recorders
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Arena arena;
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env->set_oop_recorder(new OopRecorder(&arena));
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OopMapSet oopmaps;
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env->set_debug_info(new DebugInformationRecorder(env->oop_recorder()));
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env->debug_info()->set_oopmaps(&oopmaps);
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env->set_dependencies(new Dependencies(env));
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// Create the code buffer and builder
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CodeBuffer hscb("Shark", 256 * K, 64 * K);
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hscb.initialize_oop_recorder(env->oop_recorder());
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MacroAssembler *masm = new MacroAssembler(&hscb);
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SharkCodeBuffer cb(masm);
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SharkBuilder builder(&cb);
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// Emit the entry point
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SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));
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// Build the LLVM IR for the method
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Function *function = SharkFunction::build(env, &builder, flow, name);
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if (env->failing()) {
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return;
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}
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// Generate native code. It's unpleasant that we have to drop into
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// the VM to do this -- it blocks safepoints -- but I can't see any
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// other way to handle the locking.
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{
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ThreadInVMfromNative tiv(JavaThread::current());
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generate_native_code(entry, function, name);
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}
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// Install the method into the VM
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CodeOffsets offsets;
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offsets.set_value(CodeOffsets::Deopt, 0);
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offsets.set_value(CodeOffsets::Exceptions, 0);
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offsets.set_value(CodeOffsets::Verified_Entry,
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target->is_static() ? 0 : wordSize);
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ExceptionHandlerTable handler_table;
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ImplicitExceptionTable inc_table;
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env->register_method(target,
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entry_bci,
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&offsets,
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0,
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&hscb,
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0,
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&oopmaps,
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&handler_table,
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&inc_table,
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this,
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false,
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directive(),
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false);
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}
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nmethod* SharkCompiler::generate_native_wrapper(MacroAssembler* masm,
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const methodHandle& target,
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int compile_id,
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BasicType* arg_types,
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BasicType return_type) {
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assert(is_initialized(), "should be");
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ResourceMark rm;
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const char *name = methodname(
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target->klass_name()->as_utf8(), target->name()->as_utf8());
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// Create the code buffer and builder
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SharkCodeBuffer cb(masm);
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SharkBuilder builder(&cb);
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// Emit the entry point
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SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));
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// Build the LLVM IR for the method
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SharkNativeWrapper *wrapper = SharkNativeWrapper::build(
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&builder, target, name, arg_types, return_type);
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// Generate native code
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generate_native_code(entry, wrapper->function(), name);
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// Return the nmethod for installation in the VM
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return nmethod::new_native_nmethod(target,
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compile_id,
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masm->code(),
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0,
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0,
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wrapper->frame_size(),
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wrapper->receiver_offset(),
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wrapper->lock_offset(),
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wrapper->oop_maps());
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}
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void SharkCompiler::generate_native_code(SharkEntry* entry,
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Function* function,
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const char* name) {
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// Print the LLVM bitcode, if requested
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if (SharkPrintBitcodeOf != NULL) {
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if (!fnmatch(SharkPrintBitcodeOf, name, 0))
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function->dump();
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}
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if (SharkVerifyFunction != NULL) {
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if (!fnmatch(SharkVerifyFunction, name, 0)) {
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verifyFunction(*function);
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}
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}
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// Compile to native code
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address code = NULL;
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context()->add_function(function);
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{
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MutexLocker locker(execution_engine_lock());
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free_queued_methods();
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#ifndef NDEBUG
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#if SHARK_LLVM_VERSION <= 31
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#define setCurrentDebugType SetCurrentDebugType
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#endif
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if (SharkPrintAsmOf != NULL) {
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if (!fnmatch(SharkPrintAsmOf, name, 0)) {
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llvm::setCurrentDebugType(X86_ONLY("x86-emitter") NOT_X86("jit"));
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llvm::DebugFlag = true;
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}
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else {
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llvm::setCurrentDebugType("");
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llvm::DebugFlag = false;
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}
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}
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#ifdef setCurrentDebugType
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#undef setCurrentDebugType
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#endif
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#endif // !NDEBUG
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memory_manager()->set_entry_for_function(function, entry);
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code = (address) execution_engine()->getPointerToFunction(function);
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}
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assert(code != NULL, "code must be != NULL");
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entry->set_entry_point(code);
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entry->set_function(function);
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entry->set_context(context());
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address code_start = entry->code_start();
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address code_limit = entry->code_limit();
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// Register generated code for profiling, etc
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if (JvmtiExport::should_post_dynamic_code_generated())
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JvmtiExport::post_dynamic_code_generated(name, code_start, code_limit);
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// Print debug information, if requested
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if (SharkTraceInstalls) {
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tty->print_cr(
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" [%p-%p): %s (%d bytes code)",
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code_start, code_limit, name, code_limit - code_start);
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}
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}
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void SharkCompiler::free_compiled_method(address code) {
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// This method may only be called when the VM is at a safepoint.
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// All _thread_in_vm threads will be waiting for the safepoint to
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// finish with the exception of the VM thread, so we can consider
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// ourself the owner of the execution engine lock even though we
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// can't actually acquire it at this time.
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assert(Thread::current()->is_Compiler_thread(), "must be called by compiler thread");
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assert_locked_or_safepoint(CodeCache_lock);
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SharkEntry *entry = (SharkEntry *) code;
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entry->context()->push_to_free_queue(entry->function());
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}
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void SharkCompiler::free_queued_methods() {
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// The free queue is protected by the execution engine lock
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assert(execution_engine_lock()->owned_by_self(), "should be");
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while (true) {
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Function *function = context()->pop_from_free_queue();
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if (function == NULL)
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break;
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execution_engine()->freeMachineCodeForFunction(function);
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function->eraseFromParent();
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}
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}
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const char* SharkCompiler::methodname(const char* klass, const char* method) {
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char *buf = NEW_RESOURCE_ARRAY(char, strlen(klass) + 2 + strlen(method) + 1);
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char *dst = buf;
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for (const char *c = klass; *c; c++) {
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if (*c == '/')
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*(dst++) = '.';
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else
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*(dst++) = *c;
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}
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*(dst++) = ':';
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*(dst++) = ':';
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for (const char *c = method; *c; c++) {
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*(dst++) = *c;
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}
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*(dst++) = '\0';
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return buf;
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}
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void SharkCompiler::print_timers() {
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// do nothing
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}
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