Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <llvm/Support/Threading.h> |
| 18 | |
| 19 | #include "compiler_internals.h" |
| 20 | #include "driver/compiler_driver.h" |
| 21 | #include "dataflow_iterator-inl.h" |
| 22 | #include "leb128.h" |
| 23 | #include "mirror/object.h" |
| 24 | #include "runtime.h" |
| 25 | #include "backend.h" |
| 26 | #include "base/logging.h" |
| 27 | |
| 28 | #if defined(ART_USE_PORTABLE_COMPILER) |
| 29 | #include "dex/portable/mir_to_gbc.h" |
| 30 | #include "llvm/llvm_compilation_unit.h" |
| 31 | #endif |
| 32 | |
| 33 | namespace { |
| 34 | #if !defined(ART_USE_PORTABLE_COMPILER) |
| 35 | pthread_once_t llvm_multi_init = PTHREAD_ONCE_INIT; |
| 36 | #endif |
| 37 | void InitializeLLVMForQuick() { |
| 38 | ::llvm::llvm_start_multithreaded(); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | namespace art { |
| 43 | namespace llvm { |
| 44 | ::llvm::Module* makeLLVMModuleContents(::llvm::Module* module); |
| 45 | } |
| 46 | |
| 47 | LLVMInfo::LLVMInfo() { |
| 48 | #if !defined(ART_USE_PORTABLE_COMPILER) |
| 49 | pthread_once(&llvm_multi_init, InitializeLLVMForQuick); |
| 50 | #endif |
| 51 | // Create context, module, intrinsic helper & ir builder |
| 52 | llvm_context_.reset(new ::llvm::LLVMContext()); |
| 53 | llvm_module_ = new ::llvm::Module("art", *llvm_context_); |
| 54 | ::llvm::StructType::create(*llvm_context_, "JavaObject"); |
| 55 | art::llvm::makeLLVMModuleContents(llvm_module_); |
Brian Carlstrom | df62950 | 2013-07-17 22:39:56 -0700 | [diff] [blame] | 56 | intrinsic_helper_.reset(new art::llvm::IntrinsicHelper(*llvm_context_, *llvm_module_)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 57 | ir_builder_.reset(new art::llvm::IRBuilder(*llvm_context_, *llvm_module_, *intrinsic_helper_)); |
| 58 | } |
| 59 | |
| 60 | LLVMInfo::~LLVMInfo() { |
| 61 | } |
| 62 | |
| 63 | extern "C" void ArtInitQuickCompilerContext(art::CompilerDriver& compiler) { |
| 64 | CHECK(compiler.GetCompilerContext() == NULL); |
| 65 | LLVMInfo* llvm_info = new LLVMInfo(); |
| 66 | compiler.SetCompilerContext(llvm_info); |
| 67 | } |
| 68 | |
| 69 | extern "C" void ArtUnInitQuickCompilerContext(art::CompilerDriver& compiler) { |
| 70 | delete reinterpret_cast<LLVMInfo*>(compiler.GetCompilerContext()); |
| 71 | compiler.SetCompilerContext(NULL); |
| 72 | } |
| 73 | |
| 74 | /* Default optimizer/debug setting for the compiler. */ |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 75 | static uint32_t kCompilerOptimizerDisableFlags = 0 | // Disable specific optimizations |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 76 | (1 << kLoadStoreElimination) | |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 77 | // (1 << kLoadHoisting) | |
| 78 | // (1 << kSuppressLoads) | |
| 79 | // (1 << kNullCheckElimination) | |
| 80 | // (1 << kPromoteRegs) | |
| 81 | // (1 << kTrackLiveTemps) | |
| 82 | // (1 << kSafeOptimizations) | |
| 83 | // (1 << kBBOpt) | |
| 84 | // (1 << kMatch) | |
| 85 | // (1 << kPromoteCompilerTemps) | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 86 | 0; |
| 87 | |
| 88 | static uint32_t kCompilerDebugFlags = 0 | // Enable debug/testing modes |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 89 | // (1 << kDebugDisplayMissingTargets) | |
| 90 | // (1 << kDebugVerbose) | |
| 91 | // (1 << kDebugDumpCFG) | |
| 92 | // (1 << kDebugSlowFieldPath) | |
| 93 | // (1 << kDebugSlowInvokePath) | |
| 94 | // (1 << kDebugSlowStringPath) | |
| 95 | // (1 << kDebugSlowestFieldPath) | |
| 96 | // (1 << kDebugSlowestStringPath) | |
| 97 | // (1 << kDebugExerciseResolveMethod) | |
| 98 | // (1 << kDebugVerifyDataflow) | |
| 99 | // (1 << kDebugShowMemoryUsage) | |
| 100 | // (1 << kDebugShowNops) | |
| 101 | // (1 << kDebugCountOpcodes) | |
| 102 | // (1 << kDebugDumpCheckStats) | |
| 103 | // (1 << kDebugDumpBitcodeFile) | |
| 104 | // (1 << kDebugVerifyBitcode) | |
| 105 | // (1 << kDebugShowSummaryMemoryUsage) | |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame^] | 106 | // (1 << kDebugShowFilterStats) | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 107 | 0; |
| 108 | |
| 109 | static CompiledMethod* CompileMethod(CompilerDriver& compiler, |
| 110 | const CompilerBackend compiler_backend, |
| 111 | const DexFile::CodeItem* code_item, |
| 112 | uint32_t access_flags, InvokeType invoke_type, |
| 113 | uint32_t class_def_idx, uint32_t method_idx, |
| 114 | jobject class_loader, const DexFile& dex_file |
| 115 | #if defined(ART_USE_PORTABLE_COMPILER) |
| 116 | , llvm::LlvmCompilationUnit* llvm_compilation_unit |
| 117 | #endif |
| 118 | ) { |
| 119 | VLOG(compiler) << "Compiling " << PrettyMethod(method_idx, dex_file) << "..."; |
| 120 | |
| 121 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 122 | UniquePtr<CompilationUnit> cu(new CompilationUnit); |
| 123 | |
| 124 | cu->compiler_driver = &compiler; |
| 125 | cu->class_linker = class_linker; |
| 126 | cu->instruction_set = compiler.GetInstructionSet(); |
| 127 | cu->compiler_backend = compiler_backend; |
| 128 | DCHECK((cu->instruction_set == kThumb2) || |
| 129 | (cu->instruction_set == kX86) || |
| 130 | (cu->instruction_set == kMips)); |
| 131 | |
| 132 | |
| 133 | /* Adjust this value accordingly once inlining is performed */ |
| 134 | cu->num_dalvik_registers = code_item->registers_size_; |
| 135 | // TODO: set this from command line |
| 136 | cu->compiler_flip_match = false; |
| 137 | bool use_match = !cu->compiler_method_match.empty(); |
| 138 | bool match = use_match && (cu->compiler_flip_match ^ |
| 139 | (PrettyMethod(method_idx, dex_file).find(cu->compiler_method_match) != |
| 140 | std::string::npos)); |
| 141 | if (!use_match || match) { |
| 142 | cu->disable_opt = kCompilerOptimizerDisableFlags; |
| 143 | cu->enable_debug = kCompilerDebugFlags; |
| 144 | cu->verbose = VLOG_IS_ON(compiler) || |
| 145 | (cu->enable_debug & (1 << kDebugVerbose)); |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * TODO: rework handling of optimization and debug flags. Should we split out |
| 150 | * MIR and backend flags? Need command-line setting as well. |
| 151 | */ |
| 152 | |
| 153 | if (compiler_backend == kPortable) { |
| 154 | // Fused long branches not currently usseful in bitcode. |
| 155 | cu->disable_opt |= (1 << kBranchFusing); |
| 156 | } |
| 157 | |
| 158 | if (cu->instruction_set == kMips) { |
| 159 | // Disable some optimizations for mips for now |
| 160 | cu->disable_opt |= ( |
| 161 | (1 << kLoadStoreElimination) | |
| 162 | (1 << kLoadHoisting) | |
| 163 | (1 << kSuppressLoads) | |
| 164 | (1 << kNullCheckElimination) | |
| 165 | (1 << kPromoteRegs) | |
| 166 | (1 << kTrackLiveTemps) | |
| 167 | (1 << kSafeOptimizations) | |
| 168 | (1 << kBBOpt) | |
| 169 | (1 << kMatch) | |
| 170 | (1 << kPromoteCompilerTemps)); |
| 171 | } |
| 172 | |
| 173 | cu->mir_graph.reset(new MIRGraph(cu.get(), &cu->arena)); |
| 174 | |
| 175 | /* Gathering opcode stats? */ |
| 176 | if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) { |
| 177 | cu->mir_graph->EnableOpcodeCounting(); |
| 178 | } |
| 179 | |
| 180 | /* Build the raw MIR graph */ |
| 181 | cu->mir_graph->InlineMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx, |
| 182 | class_loader, dex_file); |
| 183 | |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame^] | 184 | if (cu->mir_graph->SkipCompilation(Runtime::Current()->GetCompilerFilter())) { |
| 185 | return NULL; |
| 186 | } |
| 187 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 188 | /* Do a code layout pass */ |
| 189 | cu->mir_graph->CodeLayout(); |
| 190 | |
| 191 | /* Perform SSA transformation for the whole method */ |
| 192 | cu->mir_graph->SSATransformation(); |
| 193 | |
| 194 | /* Do constant propagation */ |
| 195 | cu->mir_graph->PropagateConstants(); |
| 196 | |
| 197 | /* Count uses */ |
| 198 | cu->mir_graph->MethodUseCount(); |
| 199 | |
| 200 | /* Perform null check elimination */ |
| 201 | cu->mir_graph->NullCheckElimination(); |
| 202 | |
| 203 | /* Combine basic blocks where possible */ |
| 204 | cu->mir_graph->BasicBlockCombine(); |
| 205 | |
| 206 | /* Do some basic block optimizations */ |
| 207 | cu->mir_graph->BasicBlockOptimization(); |
| 208 | |
| 209 | if (cu->enable_debug & (1 << kDebugDumpCheckStats)) { |
| 210 | cu->mir_graph->DumpCheckStats(); |
| 211 | } |
| 212 | |
| 213 | if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) { |
| 214 | cu->mir_graph->ShowOpcodeStats(); |
| 215 | } |
| 216 | |
| 217 | /* Set up regLocation[] array to describe values - one for each ssa_name. */ |
| 218 | cu->mir_graph->BuildRegLocations(); |
| 219 | |
| 220 | CompiledMethod* result = NULL; |
| 221 | |
| 222 | #if defined(ART_USE_PORTABLE_COMPILER) |
| 223 | if (compiler_backend == kPortable) { |
| 224 | cu->cg.reset(PortableCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena, |
| 225 | llvm_compilation_unit)); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 226 | } else { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 227 | #endif |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 228 | switch (compiler.GetInstructionSet()) { |
| 229 | case kThumb2: |
Brian Carlstrom | f69863b | 2013-07-17 21:53:13 -0700 | [diff] [blame] | 230 | cu->cg.reset(ArmCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena)); |
| 231 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 232 | case kMips: |
Brian Carlstrom | f69863b | 2013-07-17 21:53:13 -0700 | [diff] [blame] | 233 | cu->cg.reset(MipsCodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena)); |
| 234 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 235 | case kX86: |
Brian Carlstrom | f69863b | 2013-07-17 21:53:13 -0700 | [diff] [blame] | 236 | cu->cg.reset(X86CodeGenerator(cu.get(), cu->mir_graph.get(), &cu->arena)); |
| 237 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 238 | default: |
| 239 | LOG(FATAL) << "Unexpected instruction set: " << compiler.GetInstructionSet(); |
| 240 | } |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 241 | #if defined(ART_USE_PORTABLE_COMPILER) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 242 | } |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 243 | #endif |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 244 | |
| 245 | cu->cg->Materialize(); |
| 246 | |
| 247 | result = cu->cg->GetCompiledMethod(); |
| 248 | |
| 249 | if (result) { |
| 250 | VLOG(compiler) << "Compiled " << PrettyMethod(method_idx, dex_file); |
| 251 | } else { |
| 252 | VLOG(compiler) << "Deferred " << PrettyMethod(method_idx, dex_file); |
| 253 | } |
| 254 | |
| 255 | if (cu->enable_debug & (1 << kDebugShowMemoryUsage)) { |
| 256 | if (cu->arena.BytesAllocated() > (5 * 1024 *1024)) { |
| 257 | MemStats mem_stats(cu->arena); |
| 258 | LOG(INFO) << PrettyMethod(method_idx, dex_file) << " " << Dumpable<MemStats>(mem_stats); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | if (cu->enable_debug & (1 << kDebugShowSummaryMemoryUsage)) { |
| 263 | LOG(INFO) << "MEMINFO " << cu->arena.BytesAllocated() << " " << cu->mir_graph->GetNumBlocks() |
| 264 | << " " << PrettyMethod(method_idx, dex_file); |
| 265 | } |
| 266 | |
| 267 | return result; |
| 268 | } |
| 269 | |
| 270 | CompiledMethod* CompileOneMethod(CompilerDriver& compiler, |
| 271 | const CompilerBackend backend, |
| 272 | const DexFile::CodeItem* code_item, |
| 273 | uint32_t access_flags, |
| 274 | InvokeType invoke_type, |
| 275 | uint32_t class_def_idx, |
| 276 | uint32_t method_idx, |
| 277 | jobject class_loader, |
| 278 | const DexFile& dex_file, |
| 279 | llvm::LlvmCompilationUnit* llvm_compilation_unit) { |
| 280 | return CompileMethod(compiler, backend, code_item, access_flags, invoke_type, class_def_idx, |
| 281 | method_idx, class_loader, dex_file |
| 282 | #if defined(ART_USE_PORTABLE_COMPILER) |
| 283 | , llvm_compilation_unit |
| 284 | #endif |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 285 | ); // NOLINT(whitespace/parens) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | } // namespace art |
| 289 | |
| 290 | extern "C" art::CompiledMethod* |
| 291 | ArtQuickCompileMethod(art::CompilerDriver& compiler, |
| 292 | const art::DexFile::CodeItem* code_item, |
| 293 | uint32_t access_flags, art::InvokeType invoke_type, |
| 294 | uint32_t class_def_idx, uint32_t method_idx, jobject class_loader, |
| 295 | const art::DexFile& dex_file) { |
| 296 | // TODO: check method fingerprint here to determine appropriate backend type. Until then, use build default |
| 297 | art::CompilerBackend backend = compiler.GetCompilerBackend(); |
| 298 | return art::CompileOneMethod(compiler, backend, code_item, access_flags, invoke_type, |
| 299 | class_def_idx, method_idx, class_loader, dex_file, |
| 300 | NULL /* use thread llvm_info */); |
| 301 | } |