blob: 8da1520c307c2229d11b80361f93ecc4b1a1dac9 [file] [log] [blame]
/*
* Copyright (C) 2011 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 <llvm/Support/Threading.h>
#include "compiler_internals.h"
#include "driver/compiler_driver.h"
#include "dataflow_iterator-inl.h"
#include "leb128.h"
#include "mirror/object.h"
#include "runtime.h"
#include "backend.h"
#include "base/logging.h"
#if defined(ART_USE_PORTABLE_COMPILER)
#include "dex/portable/mir_to_gbc.h"
#include "llvm/llvm_compilation_unit.h"
#endif
namespace {
#if !defined(ART_USE_PORTABLE_COMPILER)
pthread_once_t llvm_multi_init = PTHREAD_ONCE_INIT;
#endif
void InitializeLLVMForQuick() {
::llvm::llvm_start_multithreaded();
}
}
namespace art {
namespace llvm {
::llvm::Module* makeLLVMModuleContents(::llvm::Module* module);
}
LLVMInfo::LLVMInfo() {
#if !defined(ART_USE_PORTABLE_COMPILER)
pthread_once(&llvm_multi_init, InitializeLLVMForQuick);
#endif
// Create context, module, intrinsic helper & ir builder
llvm_context_.reset(new ::llvm::LLVMContext());
llvm_module_ = new ::llvm::Module("art", *llvm_context_);
::llvm::StructType::create(*llvm_context_, "JavaObject");
art::llvm::makeLLVMModuleContents(llvm_module_);
intrinsic_helper_.reset(new art::llvm::IntrinsicHelper(*llvm_context_, *llvm_module_));
ir_builder_.reset(new art::llvm::IRBuilder(*llvm_context_, *llvm_module_, *intrinsic_helper_));
}
LLVMInfo::~LLVMInfo() {
}
extern "C" void ArtInitQuickCompilerContext(art::CompilerDriver& compiler) {
CHECK(compiler.GetCompilerContext() == NULL);
LLVMInfo* llvm_info = new LLVMInfo();
compiler.SetCompilerContext(llvm_info);
}
extern "C" void ArtUnInitQuickCompilerContext(art::CompilerDriver& compiler) {
delete reinterpret_cast<LLVMInfo*>(compiler.GetCompilerContext());
compiler.SetCompilerContext(NULL);
}
/* Default optimizer/debug setting for the compiler. */
static uint32_t kCompilerOptimizerDisableFlags = 0 | // Disable specific optimizations
(1 << kLoadStoreElimination) |
// (1 << kLoadHoisting) |
// (1 << kSuppressLoads) |
// (1 << kNullCheckElimination) |
// (1 << kPromoteRegs) |
// (1 << kTrackLiveTemps) |
// (1 << kSafeOptimizations) |
// (1 << kBBOpt) |
// (1 << kMatch) |
// (1 << kPromoteCompilerTemps) |
0;
static uint32_t kCompilerDebugFlags = 0 | // Enable debug/testing modes
// (1 << kDebugDisplayMissingTargets) |
// (1 << kDebugVerbose) |
// (1 << kDebugDumpCFG) |
// (1 << kDebugSlowFieldPath) |
// (1 << kDebugSlowInvokePath) |
// (1 << kDebugSlowStringPath) |
// (1 << kDebugSlowestFieldPath) |
// (1 << kDebugSlowestStringPath) |
// (1 << kDebugExerciseResolveMethod) |
// (1 << kDebugVerifyDataflow) |
// (1 << kDebugShowMemoryUsage) |
// (1 << kDebugShowNops) |
// (1 << kDebugCountOpcodes) |
// (1 << kDebugDumpCheckStats) |
// (1 << kDebugDumpBitcodeFile) |
// (1 << kDebugVerifyBitcode) |
// (1 << kDebugShowSummaryMemoryUsage) |
// (1 << kDebugShowFilterStats) |
0;
static CompiledMethod* CompileMethod(CompilerDriver& compiler,
const CompilerBackend compiler_backend,
const DexFile::CodeItem* code_item,
uint32_t access_flags, InvokeType invoke_type,
uint32_t class_def_idx, uint32_t method_idx,
jobject class_loader, const DexFile& dex_file
#if defined(ART_USE_PORTABLE_COMPILER)
, llvm::LlvmCompilationUnit* llvm_compilation_unit
#endif
) {
VLOG(compiler) << "Compiling " << PrettyMethod(method_idx, dex_file) << "...";
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
UniquePtr<CompilationUnit> cu(new CompilationUnit);
cu->compiler_driver = &compiler;
cu->class_linker = class_linker;
cu->instruction_set = compiler.GetInstructionSet();
cu->compiler_backend = compiler_backend;
DCHECK((cu->instruction_set == kThumb2) ||
(cu->instruction_set == kX86) ||
(cu->instruction_set == kMips));
/* Adjust this value accordingly once inlining is performed */
cu->num_dalvik_registers = code_item->registers_size_;
// TODO: set this from command line
cu->compiler_flip_match = false;
bool use_match = !cu->compiler_method_match.empty();
bool match = use_match && (cu->compiler_flip_match ^
(PrettyMethod(method_idx, dex_file).find(cu->compiler_method_match) !=
std::string::npos));
if (!use_match || match) {
cu->disable_opt = kCompilerOptimizerDisableFlags;
cu->enable_debug = kCompilerDebugFlags;
cu->verbose = VLOG_IS_ON(compiler) ||
(cu->enable_debug & (1 << kDebugVerbose));
}
/*
* TODO: rework handling of optimization and debug flags. Should we split out
* MIR and backend flags? Need command-line setting as well.
*/
if (compiler_backend == kPortable) {
// Fused long branches not currently usseful in bitcode.
cu->disable_opt |= (1 << kBranchFusing);
}
if (cu->instruction_set == kMips) {
// Disable some optimizations for mips for now
cu->disable_opt |= (
(1 << kLoadStoreElimination) |
(1 << kLoadHoisting) |
(1 << kSuppressLoads) |
(1 << kNullCheckElimination) |
(1 << kPromoteRegs) |
(1 << kTrackLiveTemps) |
(1 << kSafeOptimizations) |
(1 << kBBOpt) |
(1 << kMatch) |
(1 << kPromoteCompilerTemps));
}
cu->mir_graph.reset(new MIRGraph(cu.get(), &cu->arena));
/* Gathering opcode stats? */
if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) {
cu->mir_graph->EnableOpcodeCounting();
}
/* Build the raw MIR graph */
cu->mir_graph->InlineMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx,
class_loader, dex_file);
if (cu->mir_graph->SkipCompilation(Runtime::Current()->GetCompilerFilter())) {
return NULL;
}
/* Do a code layout pass */
cu->mir_graph->CodeLayout();
/* Perform SSA transformation for the whole method */
cu->mir_graph->SSATransformation();
/* Do constant propagation */
cu->mir_graph->PropagateConstants();
/* Count uses */
cu->mir_graph->MethodUseCount();
/* Perform null check elimination */
cu->mir_graph->NullCheckElimination();
/* Combine basic blocks where possible */
cu->mir_graph->BasicBlockCombine();
/* Do some basic block optimizations */
cu->mir_graph->BasicBlockOptimization();
if (cu->enable_debug & (1 << kDebugDumpCheckStats)) {
cu->mir_graph->DumpCheckStats();
}
if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) {
cu->mir_graph->ShowOpcodeStats();
}
/* Set up regLocation[] array to describe values - one for each ssa_name. */
cu->mir_graph->BuildRegLocations();
CompiledMethod* result = NULL;
#if defined(ART_USE_PORTABLE_COMPILER)
if (compiler_backend == kPortable) {
cu->cg.reset(PortableCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena,
llvm_compilation_unit));
} else {
#endif
switch (compiler.GetInstructionSet()) {
case kThumb2:
cu->cg.reset(ArmCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena));
break;
case kMips:
cu->cg.reset(MipsCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena));
break;
case kX86:
cu->cg.reset(X86CodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena));
break;
default:
LOG(FATAL) << "Unexpected instruction set: " << compiler.GetInstructionSet();
}
#if defined(ART_USE_PORTABLE_COMPILER)
}
#endif
cu->cg->Materialize();
result = cu->cg->GetCompiledMethod();
if (result) {
VLOG(compiler) << "Compiled " << PrettyMethod(method_idx, dex_file);
} else {
VLOG(compiler) << "Deferred " << PrettyMethod(method_idx, dex_file);
}
if (cu->enable_debug & (1 << kDebugShowMemoryUsage)) {
if (cu->arena.BytesAllocated() > (5 * 1024 *1024)) {
MemStats mem_stats(cu->arena);
LOG(INFO) << PrettyMethod(method_idx, dex_file) << " " << Dumpable<MemStats>(mem_stats);
}
}
if (cu->enable_debug & (1 << kDebugShowSummaryMemoryUsage)) {
LOG(INFO) << "MEMINFO " << cu->arena.BytesAllocated() << " " << cu->mir_graph->GetNumBlocks()
<< " " << PrettyMethod(method_idx, dex_file);
}
return result;
}
CompiledMethod* CompileOneMethod(CompilerDriver& compiler,
const CompilerBackend backend,
const DexFile::CodeItem* code_item,
uint32_t access_flags,
InvokeType invoke_type,
uint32_t class_def_idx,
uint32_t method_idx,
jobject class_loader,
const DexFile& dex_file,
llvm::LlvmCompilationUnit* llvm_compilation_unit) {
return CompileMethod(compiler, backend, code_item, access_flags, invoke_type, class_def_idx,
method_idx, class_loader, dex_file
#if defined(ART_USE_PORTABLE_COMPILER)
, llvm_compilation_unit
#endif
); // NOLINT(whitespace/parens)
}
} // namespace art
extern "C" art::CompiledMethod*
ArtQuickCompileMethod(art::CompilerDriver& compiler,
const art::DexFile::CodeItem* code_item,
uint32_t access_flags, art::InvokeType invoke_type,
uint32_t class_def_idx, uint32_t method_idx, jobject class_loader,
const art::DexFile& dex_file) {
// TODO: check method fingerprint here to determine appropriate backend type. Until then, use build default
art::CompilerBackend backend = compiler.GetCompilerBackend();
return art::CompileOneMethod(compiler, backend, code_item, access_flags, invoke_type,
class_def_idx, method_idx, class_loader, dex_file,
NULL /* use thread llvm_info */);
}