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/*
* Copyright (C) 2014 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_backend.h"
#include "elf_writer_quick.h"
#include "dex/quick/mir_to_lir.h"
#include "dex/mir_graph.h"
#include "driver/compiler_driver.h"
#include "mirror/art_method-inl.h"
#ifdef ART_USE_PORTABLE_COMPILER
#include "dex/portable/mir_to_gbc.h"
#include "elf_writer_mclinker.h"
#endif
namespace art {
#ifdef ART_SEA_IR_MODE
extern "C" art::CompiledMethod* SeaIrCompileMethod(art::CompilerDriver& compiler,
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);
#endif
extern "C" void ArtInitQuickCompilerContext(art::CompilerDriver& driver);
extern "C" void ArtUnInitQuickCompilerContext(art::CompilerDriver& driver);
extern "C" art::CompiledMethod* ArtQuickCompileMethod(art::CompilerDriver& compiler,
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);
extern "C" art::CompiledMethod* ArtQuickJniCompileMethod(art::CompilerDriver& compiler,
uint32_t access_flags, uint32_t method_idx,
const art::DexFile& dex_file);
static CompiledMethod* TryCompileWithSeaIR(art::CompilerDriver& compiler,
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) {
#ifdef ART_SEA_IR_MODE
bool use_sea = Runtime::Current()->IsSeaIRMode();
use_sea = use_sea &&
(std::string::npos != PrettyMethod(method_idx, dex_file).find("fibonacci"));
if (use_sea) {
LOG(INFO) << "Using SEA IR to compile..." << std::endl;
return SeaIrCompileMethod(compiler,
code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
}
#endif
return nullptr;
}
class QuickBackend : public CompilerBackend {
public:
QuickBackend() : CompilerBackend(100) {}
void Init(CompilerDriver& driver) const {
ArtInitQuickCompilerContext(driver);
}
void UnInit(CompilerDriver& driver) const {
ArtUnInitQuickCompilerContext(driver);
}
CompiledMethod* Compile(CompilerDriver& 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) const {
CompiledMethod* method = TryCompileWithSeaIR(compiler,
code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
if (method != nullptr) return method;
return ArtQuickCompileMethod(compiler,
code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
}
CompiledMethod* JniCompile(CompilerDriver& driver,
uint32_t access_flags,
uint32_t method_idx,
const DexFile& dex_file) const {
return ArtQuickJniCompileMethod(driver, access_flags, method_idx, dex_file);
}
uintptr_t GetEntryPointOf(mirror::ArtMethod* method) const {
return reinterpret_cast<uintptr_t>(method->GetEntryPointFromQuickCompiledCode());
}
bool WriteElf(art::File* file,
OatWriter* oat_writer,
const std::vector<const art::DexFile*>& dex_files,
const std::string& android_root,
bool is_host, const CompilerDriver& driver) const
OVERRIDE
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return art::ElfWriterQuick::Create(file, oat_writer, dex_files, android_root, is_host, driver);
}
Backend* GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) const {
Mir2Lir* mir_to_lir = nullptr;
switch (cu->instruction_set) {
case kThumb2:
mir_to_lir = ArmCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
break;
case kMips:
mir_to_lir = MipsCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
break;
case kX86:
mir_to_lir = X86CodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
break;
default:
LOG(FATAL) << "Unexpected instruction set: " << cu->instruction_set;
}
/* The number of compiler temporaries depends on backend so set it up now if possible */
if (mir_to_lir) {
size_t max_temps = mir_to_lir->GetMaxPossibleCompilerTemps();
bool set_max = cu->mir_graph->SetMaxAvailableNonSpecialCompilerTemps(max_temps);
CHECK(set_max);
}
return mir_to_lir;;
}
void InitCompilationUnit(CompilationUnit& cu) const {}
private:
DISALLOW_COPY_AND_ASSIGN(QuickBackend);
};
#ifdef ART_USE_PORTABLE_COMPILER
extern "C" void ArtInitCompilerContext(art::CompilerDriver& driver);
extern "C" void ArtUnInitCompilerContext(art::CompilerDriver& driver);
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);
extern "C" art::CompiledMethod* ArtLLVMJniCompileMethod(art::CompilerDriver& driver,
uint32_t access_flags, uint32_t method_idx,
const art::DexFile& dex_file);
extern "C" void compilerLLVMSetBitcodeFileName(art::CompilerDriver& driver,
std::string const& filename);
class LLVMBackend : public CompilerBackend {
public:
LLVMBackend() : CompilerBackend(1000) {}
void Init(CompilerDriver& driver) const {
ArtInitCompilerContext(driver);
}
void UnInit(CompilerDriver& driver) const {
ArtUnInitCompilerContext(driver);
}
CompiledMethod* Compile(CompilerDriver& 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) const {
CompiledMethod* method = TryCompileWithSeaIR(compiler,
code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
if (method != nullptr) return method;
return ArtCompileMethod(compiler,
code_item,
access_flags,
invoke_type,
class_def_idx,
method_idx,
class_loader,
dex_file);
}
CompiledMethod* JniCompile(CompilerDriver& driver,
uint32_t access_flags,
uint32_t method_idx,
const DexFile& dex_file) const {
return ArtLLVMJniCompileMethod(driver, access_flags, method_idx, dex_file);
}
uintptr_t GetEntryPointOf(mirror::ArtMethod* method) const {
return reinterpret_cast<uintptr_t>(method->GetEntryPointFromPortableCompiledCode());
}
bool WriteElf(art::File* file,
OatWriter* oat_writer,
const std::vector<const art::DexFile*>& dex_files,
const std::string& android_root,
bool is_host, const CompilerDriver& driver) const
OVERRIDE
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return art::ElfWriterMclinker::Create(
file, oat_writer, dex_files, android_root, is_host, driver);
}
Backend* GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) const {
return PortableCodeGenerator(
cu, cu->mir_graph.get(), &cu->arena,
reinterpret_cast<art::llvm::LlvmCompilationUnit*>(compilation_unit));
}
void InitCompilationUnit(CompilationUnit& cu) const {
// Fused long branches not currently useful in bitcode.
cu.disable_opt |=
(1 << kBranchFusing) |
(1 << kSuppressExceptionEdges);
}
bool IsPortable() const OVERRIDE {
return true;
}
void SetBitcodeFileName(const CompilerDriver& driver, const std::string& filename) {
typedef void (*SetBitcodeFileNameFn)(const CompilerDriver&, const std::string&);
SetBitcodeFileNameFn set_bitcode_file_name =
reinterpret_cast<SetBitcodeFileNameFn>(compilerLLVMSetBitcodeFileName);
set_bitcode_file_name(driver, filename);
}
private:
DISALLOW_COPY_AND_ASSIGN(LLVMBackend);
};
#endif
CompilerBackend* CompilerBackend::Create(CompilerBackend::Kind kind) {
switch (kind) {
case kQuick:
return new QuickBackend();
break;
case kPortable:
#ifdef ART_USE_PORTABLE_COMPILER
return new LLVMBackend();
#else
LOG(FATAL) << "Portable compiler not compiled";
#endif
break;
default:
LOG(FATAL) << "UNREACHABLE";
}
return nullptr;
}
} // namespace art
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