/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "compiler_llvm.h"
#include "backend_options.h"
#include "base/stl_util.h"
#include "class_linker.h"
#include "compiled_method.h"
#include "dex/verification_results.h"
#include "dex/verified_method.h"
#include "driver/compiler_driver.h"
#include "driver/dex_compilation_unit.h"
#include "globals.h"
#include "ir_builder.h"
#include "jni/portable/jni_compiler.h"
#include "llvm_compilation_unit.h"
#include "thread-inl.h"
#include "utils_llvm.h"
#include "verifier/method_verifier.h"
#include <llvm/LinkAllPasses.h>
#include <llvm/Support/ManagedStatic.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Support/Threading.h>
namespace art {
void CompileOneMethod(CompilerDriver& driver,
Compiler* compiler,
const DexFile::CodeItem* code_item,
uint32_t access_flags, InvokeType invoke_type,
uint16_t class_def_idx, uint32_t method_idx, jobject class_loader,
const DexFile& dex_file,
void* llvm_info);
}
namespace llvm {
extern bool TimePassesIsEnabled;
}
namespace {
pthread_once_t llvm_initialized = PTHREAD_ONCE_INIT;
void InitializeLLVM() {
// Initialize LLVM internal data structure for multithreading
llvm::llvm_start_multithreaded();
// NOTE: Uncomment following line to show the time consumption of LLVM passes
// llvm::TimePassesIsEnabled = true;
// Initialize LLVM target-specific options.
art::llvm::InitialBackendOptions();
// Initialize LLVM target, MC subsystem, asm printer, and asm parser.
if (art::kIsTargetBuild) {
// Don't initialize all targets on device. Just initialize the device's native target
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmPrinter();
llvm::InitializeNativeTargetAsmParser();
} else {
llvm::InitializeAllTargets();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllAsmPrinters();
llvm::InitializeAllAsmParsers();
}
// Initialize LLVM optimization passes
llvm::PassRegistry ®istry = *llvm::PassRegistry::getPassRegistry();
llvm::initializeCore(registry);
llvm::initializeScalarOpts(registry);
llvm::initializeIPO(registry);
llvm::initializeAnalysis(registry);
llvm::initializeIPA(registry);
llvm::initializeTransformUtils(registry);
llvm::initializeInstCombine(registry);
llvm::initializeInstrumentation(registry);
llvm::initializeTarget(registry);
}
// The Guard to Shutdown LLVM
// llvm::llvm_shutdown_obj llvm_guard;
// TODO: We are commenting out this line because this will cause SEGV from
// time to time.
// Two reasons: (1) the order of the destruction of static objects, or
// (2) dlopen/dlclose side-effect on static objects.
} // anonymous namespace
namespace art {
namespace llvm {
::llvm::Module* makeLLVMModuleContents(::llvm::Module* module);
CompilerLLVM::CompilerLLVM(CompilerDriver* driver, InstructionSet insn_set)
: compiler_driver_(driver), insn_set_(insn_set),
next_cunit_id_lock_("compilation unit id lock"), next_cunit_id_(1) {
// Initialize LLVM libraries
pthread_once(&llvm_initialized, InitializeLLVM);
}
CompilerLLVM::~CompilerLLVM() {
}
LlvmCompilationUnit* CompilerLLVM::AllocateCompilationUnit() {
MutexLock GUARD(Thread::Current(), next_cunit_id_lock_);
LlvmCompilationUnit* cunit = new LlvmCompilationUnit(this, next_cunit_id_++);
if (!bitcode_filename_.empty()) {
cunit->SetBitcodeFileName(StringPrintf("%s-%u",
bitcode_filename_.c_str(),
cunit->GetCompilationUnitId()));
}
return cunit;
}
CompiledMethod* CompilerLLVM::
CompileDexMethod(DexCompilationUnit* dex_compilation_unit, InvokeType invoke_type) {
std::unique_ptr<LlvmCompilationUnit> cunit(AllocateCompilationUnit());
cunit->SetDexCompilationUnit(dex_compilation_unit);
cunit->SetCompilerDriver(compiler_driver_);
// TODO: consolidate ArtCompileMethods
CompileOneMethod(*compiler_driver_,
compiler_driver_->GetCompiler(),
dex_compilation_unit->GetCodeItem(),
dex_compilation_unit->GetAccessFlags(),
invoke_type,
dex_compilation_unit->GetClassDefIndex(),
dex_compilation_unit->GetDexMethodIndex(),
dex_compilation_unit->GetClassLoader(),
*dex_compilation_unit->GetDexFile(),
cunit.get());
cunit->Materialize();
return new CompiledMethod(*compiler_driver_, compiler_driver_->GetInstructionSet(),
cunit->GetElfObject(),
dex_compilation_unit->GetVerifiedMethod()->GetDexGcMap(),
cunit->GetDexCompilationUnit()->GetSymbol());
}
CompiledMethod* CompilerLLVM::
CompileNativeMethod(DexCompilationUnit* dex_compilation_unit) {
std::unique_ptr<LlvmCompilationUnit> cunit(AllocateCompilationUnit());
std::unique_ptr<JniCompiler> jni_compiler(
new JniCompiler(cunit.get(), compiler_driver_, dex_compilation_unit));
return jni_compiler->Compile();
}
} // namespace llvm
} // namespace art
static art::llvm::CompilerLLVM* ContextOf(art::CompilerDriver* driver) {
void *compiler_context = driver->GetCompilerContext();
CHECK(compiler_context != NULL);
return reinterpret_cast<art::llvm::CompilerLLVM*>(compiler_context);
}
static art::llvm::CompilerLLVM* ContextOf(const art::CompilerDriver& driver) {
void *compiler_context = driver.GetCompilerContext();
CHECK(compiler_context != NULL);
return reinterpret_cast<art::llvm::CompilerLLVM*>(compiler_context);
}
extern "C" void ArtInitCompilerContext(art::CompilerDriver* driver) {
CHECK(driver->GetCompilerContext() == nullptr);
art::llvm::CompilerLLVM* compiler_llvm = new art::llvm::CompilerLLVM(driver,
driver->GetInstructionSet());
driver->SetCompilerContext(compiler_llvm);
}
extern "C" void ArtUnInitCompilerContext(art::CompilerDriver* driver) {
delete ContextOf(driver);
driver->SetCompilerContext(nullptr);
}
extern "C" art::CompiledMethod* ArtCompileMethod(art::CompilerDriver* driver,
const art::DexFile::CodeItem* code_item,
uint32_t access_flags,
art::InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
jobject class_loader,
const art::DexFile& dex_file) {
UNUSED(class_def_idx); // TODO: this is used with Compiler::RequiresConstructorBarrier.
art::ClassLinker *class_linker = art::Runtime::Current()->GetClassLinker();
art::DexCompilationUnit dex_compilation_unit(
NULL, class_loader, class_linker, dex_file, code_item,
class_def_idx, method_idx, access_flags, driver->GetVerifiedMethod(&dex_file, method_idx));
art::llvm::CompilerLLVM* compiler_llvm = ContextOf(driver);
art::CompiledMethod* result = compiler_llvm->CompileDexMethod(&dex_compilation_unit, invoke_type);
return result;
}
extern "C" art::CompiledMethod* ArtLLVMJniCompileMethod(art::CompilerDriver* driver,
uint32_t access_flags, uint32_t method_idx,
const art::DexFile& dex_file) {
art::ClassLinker *class_linker = art::Runtime::Current()->GetClassLinker();
art::DexCompilationUnit dex_compilation_unit(
nullptr, nullptr, class_linker, dex_file, nullptr,
0, method_idx, access_flags, nullptr);
art::llvm::CompilerLLVM* compiler_llvm = ContextOf(driver);
art::CompiledMethod* result = compiler_llvm->CompileNativeMethod(&dex_compilation_unit);
return result;
}
extern "C" void compilerLLVMSetBitcodeFileName(const art::CompilerDriver& driver,
const std::string& filename) {
ContextOf(driver)->SetBitcodeFileName(filename);
}