| /* |
| * 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/driver/compiler_driver.h" |
| #include "compiler_internals.h" |
| #include "dataflow_iterator.h" |
| #if defined(ART_USE_PORTABLE_COMPILER) |
| #include "compiler/llvm/llvm_compilation_unit.h" |
| #include "compiler/dex/portable/mir_to_gbc.h" |
| #endif |
| #include "leb128.h" |
| #include "mirror/object.h" |
| #include "runtime.h" |
| #include "backend.h" |
| #include "base/logging.h" |
| |
| 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) | |
| 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); |
| |
| /* 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(); |
| } |
| } |
| |
| 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); |
| } |
| } |
| |
| cu->arena.ArenaReset(); |
| |
| 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 |
| ); |
| } |
| |
| } // 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 */); |
| } |