Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 "compilation_unit.h" |
| 18 | |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 19 | #include "compiled_method.h" |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 20 | #include "compiler_llvm.h" |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 21 | #include "file.h" |
Elliott Hughes | 0f3c553 | 2012-03-30 14:51:51 -0700 | [diff] [blame] | 22 | #include "instruction_set.h" |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 23 | #include "ir_builder.h" |
| 24 | #include "logging.h" |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 25 | #include "os.h" |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 26 | |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 27 | #include "runtime_support_builder_arm.h" |
TDYa127 | b08ed12 | 2012-06-05 23:51:19 -0700 | [diff] [blame] | 28 | #include "runtime_support_builder_thumb2.h" |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 29 | #include "runtime_support_builder_x86.h" |
| 30 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 31 | #include <llvm/ADT/OwningPtr.h> |
| 32 | #include <llvm/ADT/StringSet.h> |
| 33 | #include <llvm/ADT/Triple.h> |
| 34 | #include <llvm/Analysis/CallGraph.h> |
| 35 | #include <llvm/Analysis/DebugInfo.h> |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 36 | #include <llvm/Analysis/Dominators.h> |
| 37 | #include <llvm/Analysis/LoopInfo.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 38 | #include <llvm/Analysis/LoopPass.h> |
| 39 | #include <llvm/Analysis/RegionPass.h> |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 40 | #include <llvm/Analysis/ScalarEvolution.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 41 | #include <llvm/Analysis/Verifier.h> |
| 42 | #include <llvm/Assembly/PrintModulePass.h> |
| 43 | #include <llvm/Bitcode/ReaderWriter.h> |
| 44 | #include <llvm/CallGraphSCCPass.h> |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 45 | #include <llvm/CodeGen/MachineFrameInfo.h> |
| 46 | #include <llvm/CodeGen/MachineFunction.h> |
| 47 | #include <llvm/CodeGen/MachineFunctionPass.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 48 | #include <llvm/DerivedTypes.h> |
| 49 | #include <llvm/LLVMContext.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 50 | #include <llvm/Module.h> |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 51 | #include <llvm/Object/ObjectFile.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 52 | #include <llvm/PassManager.h> |
| 53 | #include <llvm/Support/Debug.h> |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 54 | #include <llvm/Support/ELF.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 55 | #include <llvm/Support/FormattedStream.h> |
| 56 | #include <llvm/Support/ManagedStatic.h> |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 57 | #include <llvm/Support/MemoryBuffer.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 58 | #include <llvm/Support/PassNameParser.h> |
| 59 | #include <llvm/Support/PluginLoader.h> |
| 60 | #include <llvm/Support/PrettyStackTrace.h> |
| 61 | #include <llvm/Support/Signals.h> |
| 62 | #include <llvm/Support/SystemUtils.h> |
| 63 | #include <llvm/Support/TargetRegistry.h> |
| 64 | #include <llvm/Support/TargetSelect.h> |
| 65 | #include <llvm/Support/ToolOutputFile.h> |
| 66 | #include <llvm/Support/raw_ostream.h> |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 67 | #include <llvm/Support/system_error.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 68 | #include <llvm/Target/TargetData.h> |
| 69 | #include <llvm/Target/TargetLibraryInfo.h> |
| 70 | #include <llvm/Target/TargetMachine.h> |
Shih-wei Liao | f1cb9a5 | 2012-04-20 01:49:18 -0700 | [diff] [blame] | 71 | #include <llvm/Transforms/IPO.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 72 | #include <llvm/Transforms/IPO/PassManagerBuilder.h> |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 73 | #include <llvm/Transforms/Scalar.h> |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 74 | |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 75 | #include <sys/types.h> |
| 76 | #include <sys/wait.h> |
| 77 | #include <unistd.h> |
| 78 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 79 | #include <string> |
| 80 | |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 81 | namespace { |
| 82 | |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 83 | // TODO: We may need something to manage these passes. |
| 84 | // TODO: We need high-level IR to analysis and do this at the IRBuilder level. |
| 85 | class AddSuspendCheckToLoopLatchPass : public llvm::LoopPass { |
| 86 | public: |
| 87 | static char ID; |
| 88 | |
| 89 | AddSuspendCheckToLoopLatchPass() : llvm::LoopPass(ID), irb_(NULL) { |
| 90 | LOG(FATAL) << "Unexpected instantiation of AddSuspendCheckToLoopLatchPass"; |
| 91 | // NOTE: We have to declare this constructor for llvm::RegisterPass, but |
| 92 | // this constructor won't work because we have no information on |
| 93 | // IRBuilder. Thus, we should place a LOG(FATAL) here. |
| 94 | } |
| 95 | |
| 96 | AddSuspendCheckToLoopLatchPass(art::compiler_llvm::IRBuilder* irb) |
| 97 | : llvm::LoopPass(ID), irb_(irb) { |
| 98 | } |
| 99 | |
| 100 | virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const { |
| 101 | AU.addRequiredID(llvm::LoopSimplifyID); |
| 102 | |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 103 | AU.addPreserved<llvm::DominatorTree>(); |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 104 | AU.addPreserved<llvm::LoopInfo>(); |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 105 | AU.addPreservedID(llvm::LoopSimplifyID); |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 106 | AU.addPreserved<llvm::ScalarEvolution>(); |
| 107 | AU.addPreservedID(llvm::BreakCriticalEdgesID); |
| 108 | } |
| 109 | |
| 110 | virtual bool runOnLoop(llvm::Loop *loop, llvm::LPPassManager &lpm) { |
| 111 | CHECK_EQ(loop->getNumBackEdges(), 1U) << "Loop must be simplified!"; |
| 112 | llvm::BasicBlock* bb = loop->getLoopLatch(); |
| 113 | CHECK_NE(bb, static_cast<void*>(NULL)) << "A single loop latch must exist."; |
| 114 | |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 115 | irb_->SetInsertPoint(bb->getTerminator()); |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 116 | |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 117 | using art::compiler_llvm::runtime_support::TestSuspend; |
| 118 | llvm::Value* runtime_func = irb_->GetRuntime(TestSuspend); |
| 119 | irb_->CreateCall(runtime_func, irb_->getJNull()); |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 120 | |
| 121 | return true; |
| 122 | } |
| 123 | |
| 124 | private: |
| 125 | art::compiler_llvm::IRBuilder* irb_; |
| 126 | }; |
| 127 | |
| 128 | char AddSuspendCheckToLoopLatchPass::ID = 0; |
| 129 | |
| 130 | llvm::RegisterPass<AddSuspendCheckToLoopLatchPass> reg_add_suspend_check_to_loop_latch_pass_( |
| 131 | "add-suspend-check-to-loop-latch", "Add suspend check to loop latch pass", false, false); |
| 132 | |
| 133 | |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 134 | } // end anonymous namespace |
| 135 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 136 | namespace art { |
| 137 | namespace compiler_llvm { |
| 138 | |
Shih-wei Liao | 21d28f5 | 2012-06-12 05:55:00 -0700 | [diff] [blame^] | 139 | #ifdef ART_USE_DEXLANG_FRONTEND |
| 140 | llvm::FunctionPass* |
| 141 | CreateGBCExpanderPass(const greenland::IntrinsicHelper& intrinsic_helper, |
| 142 | IRBuilder& irb); |
| 143 | #endif |
| 144 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 145 | llvm::Module* makeLLVMModuleContents(llvm::Module* module); |
| 146 | |
| 147 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 148 | CompilationUnit::CompilationUnit(const CompilerLLVM* compiler_llvm, |
| 149 | size_t cunit_idx) |
| 150 | : compiler_llvm_(compiler_llvm), cunit_idx_(cunit_idx), |
| 151 | context_(new llvm::LLVMContext()) { |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 152 | |
| 153 | // Create the module and include the runtime function declaration |
| 154 | module_ = new llvm::Module("art", *context_); |
| 155 | makeLLVMModuleContents(module_); |
| 156 | |
Shih-wei Liao | 21d28f5 | 2012-06-12 05:55:00 -0700 | [diff] [blame^] | 157 | #ifdef ART_USE_DEXLANG_FRONTEND |
| 158 | dex_lang_ctx_ = new greenland::DexLang::Context(*module_); |
| 159 | #endif |
| 160 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 161 | // Create IRBuilder |
| 162 | irb_.reset(new IRBuilder(*context_, *module_)); |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 163 | |
| 164 | // We always need a switch case, so just use a normal function. |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 165 | switch(GetInstructionSet()) { |
TDYa127 | b08ed12 | 2012-06-05 23:51:19 -0700 | [diff] [blame] | 166 | default: |
| 167 | runtime_support_.reset(new RuntimeSupportBuilder(*context_, *module_, *irb_)); |
| 168 | break; |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 169 | case kArm: |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 170 | runtime_support_.reset(new RuntimeSupportBuilderARM(*context_, *module_, *irb_)); |
| 171 | break; |
TDYa127 | b08ed12 | 2012-06-05 23:51:19 -0700 | [diff] [blame] | 172 | case kThumb2: |
| 173 | runtime_support_.reset(new RuntimeSupportBuilderThumb2(*context_, *module_, *irb_)); |
| 174 | break; |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 175 | case kX86: |
| 176 | runtime_support_.reset(new RuntimeSupportBuilderX86(*context_, *module_, *irb_)); |
| 177 | break; |
| 178 | } |
| 179 | |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 180 | runtime_support_->OptimizeRuntimeSupport(); |
| 181 | |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 182 | irb_->SetRuntimeSupport(runtime_support_.get()); |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | |
| 186 | CompilationUnit::~CompilationUnit() { |
Shih-wei Liao | 21d28f5 | 2012-06-12 05:55:00 -0700 | [diff] [blame^] | 187 | #ifdef ART_USE_DEXLANG_FRONTEND |
| 188 | delete dex_lang_ctx_; |
| 189 | #endif |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 193 | InstructionSet CompilationUnit::GetInstructionSet() const { |
| 194 | return compiler_llvm_->GetInstructionSet(); |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 198 | bool CompilationUnit::Materialize() { |
| 199 | std::string elf_image; |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 200 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 201 | // Compile and prelink llvm::Module |
| 202 | if (!MaterializeToString(elf_image)) { |
| 203 | LOG(ERROR) << "Failed to materialize compilation unit " << cunit_idx_; |
| 204 | DeleteResources(); |
| 205 | return false; |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 206 | } |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 207 | |
| 208 | #if 0 |
| 209 | // Dump the ELF image for debugging |
| 210 | std::string filename(StringPrintf("%s/Art%zu.elf", |
| 211 | GetArtCacheOrDie(GetAndroidData()).c_str(), |
| 212 | cunit_idx_)); |
| 213 | UniquePtr<File> output(OS::OpenFile(filename.c_str(), true)); |
| 214 | output->WriteFully(elf_image.data(), elf_image.size()); |
| 215 | #endif |
| 216 | |
| 217 | // Extract the .text section and prelink the code |
| 218 | if (!ExtractCodeAndPrelink(elf_image)) { |
| 219 | LOG(ERROR) << "Failed to extract code from compilation unit " << cunit_idx_; |
| 220 | DeleteResources(); |
| 221 | return false; |
| 222 | } |
| 223 | |
| 224 | DeleteResources(); |
| 225 | return true; |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 226 | } |
| 227 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 228 | |
| 229 | bool CompilationUnit::MaterializeToString(std::string& str_buffer) { |
| 230 | llvm::raw_string_ostream str_os(str_buffer); |
| 231 | return MaterializeToRawOStream(str_os); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | bool CompilationUnit::MaterializeToRawOStream(llvm::raw_ostream& out_stream) { |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 236 | // Lookup the LLVM target |
Logan Chien | 1258417 | 2012-07-10 04:07:28 -0700 | [diff] [blame] | 237 | const char* target_triple = NULL; |
| 238 | const char* target_cpu = ""; |
| 239 | const char* target_attr = NULL; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 240 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 241 | InstructionSet insn_set = GetInstructionSet(); |
| 242 | switch (insn_set) { |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 243 | case kThumb2: |
| 244 | target_triple = "thumb-none-linux-gnueabi"; |
Shih-wei Liao | 53519bf | 2012-06-17 03:45:00 -0700 | [diff] [blame] | 245 | target_cpu = "cortex-a9"; |
TDYa127 | b08ed12 | 2012-06-05 23:51:19 -0700 | [diff] [blame] | 246 | target_attr = "+thumb2,+neon,+neonfp,+vfp3,+db"; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 247 | break; |
| 248 | |
| 249 | case kArm: |
| 250 | target_triple = "armv7-none-linux-gnueabi"; |
Shih-wei Liao | 53519bf | 2012-06-17 03:45:00 -0700 | [diff] [blame] | 251 | // TODO: Fix for Nexus S. |
| 252 | target_cpu = "cortex-a9"; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 253 | // TODO: Fix for Xoom. |
TDYa127 | b08ed12 | 2012-06-05 23:51:19 -0700 | [diff] [blame] | 254 | target_attr = "+v7,+neon,+neonfp,+vfp3,+db"; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 255 | break; |
| 256 | |
| 257 | case kX86: |
| 258 | target_triple = "i386-pc-linux-gnu"; |
| 259 | target_attr = ""; |
| 260 | break; |
| 261 | |
| 262 | case kMips: |
| 263 | target_triple = "mipsel-unknown-linux"; |
| 264 | target_attr = "mips32r2"; |
| 265 | break; |
| 266 | |
| 267 | default: |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 268 | LOG(FATAL) << "Unknown instruction set: " << insn_set; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | std::string errmsg; |
Logan Chien | 1258417 | 2012-07-10 04:07:28 -0700 | [diff] [blame] | 272 | const llvm::Target* target = |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 273 | llvm::TargetRegistry::lookupTarget(target_triple, errmsg); |
| 274 | |
| 275 | CHECK(target != NULL) << errmsg; |
| 276 | |
| 277 | // Target options |
| 278 | llvm::TargetOptions target_options; |
| 279 | target_options.FloatABIType = llvm::FloatABI::Soft; |
| 280 | target_options.NoFramePointerElim = true; |
| 281 | target_options.NoFramePointerElimNonLeaf = true; |
| 282 | target_options.UseSoftFloat = false; |
TDYa127 | 3978da5 | 2012-05-19 07:45:39 -0700 | [diff] [blame] | 283 | target_options.EnableFastISel = false; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 284 | |
| 285 | // Create the llvm::TargetMachine |
Logan Chien | b6bed0b | 2012-05-04 15:03:56 +0800 | [diff] [blame] | 286 | llvm::OwningPtr<llvm::TargetMachine> target_machine( |
Shih-wei Liao | 53519bf | 2012-06-17 03:45:00 -0700 | [diff] [blame] | 287 | target->createTargetMachine(target_triple, target_cpu, target_attr, target_options, |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 288 | llvm::Reloc::Static, llvm::CodeModel::Small, |
Shih-wei Liao | dac5eb2 | 2012-06-03 14:06:04 -0700 | [diff] [blame] | 289 | llvm::CodeGenOpt::Aggressive)); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 290 | |
Logan Chien | b6bed0b | 2012-05-04 15:03:56 +0800 | [diff] [blame] | 291 | CHECK(target_machine.get() != NULL) << "Failed to create target machine"; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 292 | |
| 293 | // Add target data |
Logan Chien | 1258417 | 2012-07-10 04:07:28 -0700 | [diff] [blame] | 294 | const llvm::TargetData* target_data = target_machine->getTargetData(); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 295 | |
| 296 | // PassManager for code generation passes |
| 297 | llvm::PassManager pm; |
| 298 | pm.add(new llvm::TargetData(*target_data)); |
| 299 | |
| 300 | // FunctionPassManager for optimization pass |
Logan Chien | 799ef4f | 2012-04-23 00:17:47 +0800 | [diff] [blame] | 301 | llvm::FunctionPassManager fpm(module_); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 302 | fpm.add(new llvm::TargetData(*target_data)); |
| 303 | |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 304 | if (bitcode_filename_.empty()) { |
| 305 | // If we don't need write the bitcode to file, add the AddSuspendCheckToLoopLatchPass to the |
| 306 | // regular FunctionPass. |
Shih-wei Liao | 21d28f5 | 2012-06-12 05:55:00 -0700 | [diff] [blame^] | 307 | #ifdef ART_USE_DEXLANG_FRONTEND |
| 308 | fpm.add(CreateGBCExpanderPass(dex_lang_ctx_->GetIntrinsicHelper(), *irb_.get())); |
| 309 | #endif |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 310 | fpm.add(new ::AddSuspendCheckToLoopLatchPass(irb_.get())); |
| 311 | } else { |
| 312 | // Run AddSuspendCheckToLoopLatchPass before we write the bitcode to file. |
| 313 | llvm::FunctionPassManager fpm2(module_); |
Shih-wei Liao | 21d28f5 | 2012-06-12 05:55:00 -0700 | [diff] [blame^] | 314 | #ifdef ART_USE_DEXLANG_FRONTEND |
| 315 | fpm2.add(CreateGBCExpanderPass(dex_lang_ctx_->GetIntrinsicHelper(), *irb_.get())); |
| 316 | #endif |
TDYa127 | f15b0ab | 2012-05-11 21:01:36 -0700 | [diff] [blame] | 317 | fpm2.add(new ::AddSuspendCheckToLoopLatchPass(irb_.get())); |
| 318 | fpm2.doInitialization(); |
| 319 | for (llvm::Module::iterator F = module_->begin(), E = module_->end(); |
| 320 | F != E; ++F) { |
| 321 | fpm2.run(*F); |
| 322 | } |
| 323 | fpm2.doFinalization(); |
| 324 | |
| 325 | |
| 326 | // Write bitcode to file |
| 327 | std::string errmsg; |
| 328 | |
| 329 | llvm::OwningPtr<llvm::tool_output_file> out_file( |
| 330 | new llvm::tool_output_file(bitcode_filename_.c_str(), errmsg, |
| 331 | llvm::raw_fd_ostream::F_Binary)); |
| 332 | |
| 333 | |
| 334 | if (!errmsg.empty()) { |
| 335 | LOG(ERROR) << "Failed to create bitcode output file: " << errmsg; |
| 336 | return false; |
| 337 | } |
| 338 | |
| 339 | llvm::WriteBitcodeToFile(module_, out_file->os()); |
| 340 | out_file->keep(); |
| 341 | } |
| 342 | |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 343 | // Add optimization pass |
| 344 | llvm::PassManagerBuilder pm_builder; |
Shih-wei Liao | e0e4024 | 2012-05-08 01:04:03 -0700 | [diff] [blame] | 345 | //pm_builder.Inliner = llvm::createFunctionInliningPass(); |
Shih-wei Liao | ba67d7d | 2012-06-23 18:48:04 -0700 | [diff] [blame] | 346 | pm_builder.Inliner = llvm::createAlwaysInlinerPass(); |
Shih-wei Liao | 415576b | 2012-04-23 15:28:53 -0700 | [diff] [blame] | 347 | //pm_builder.Inliner = llvm::createPartialInliningPass(); |
| 348 | pm_builder.OptLevel = 3; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 349 | pm_builder.DisableSimplifyLibCalls = 1; |
TDYa127 | e4c2ccc | 2012-05-13 21:10:36 -0700 | [diff] [blame] | 350 | pm_builder.DisableUnitAtATime = 1; |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 351 | pm_builder.populateFunctionPassManager(fpm); |
TDYa127 | ce9c317 | 2012-05-15 06:09:27 -0700 | [diff] [blame] | 352 | pm_builder.populateModulePassManager(pm); |
| 353 | pm.add(llvm::createStripDeadPrototypesPass()); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 354 | |
| 355 | // Add passes to emit ELF image |
| 356 | { |
Logan Chien | 08e1ba3 | 2012-05-08 15:08:51 +0800 | [diff] [blame] | 357 | llvm::formatted_raw_ostream formatted_os(out_stream, false); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 358 | |
| 359 | // Ask the target to add backend passes as necessary. |
| 360 | if (target_machine->addPassesToEmitFile(pm, |
| 361 | formatted_os, |
| 362 | llvm::TargetMachine::CGFT_ObjectFile, |
| 363 | true)) { |
| 364 | LOG(FATAL) << "Unable to generate ELF for this target"; |
| 365 | return false; |
| 366 | } |
| 367 | |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 368 | // Run the per-function optimization |
| 369 | fpm.doInitialization(); |
Logan Chien | 799ef4f | 2012-04-23 00:17:47 +0800 | [diff] [blame] | 370 | for (llvm::Module::iterator F = module_->begin(), E = module_->end(); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 371 | F != E; ++F) { |
| 372 | fpm.run(*F); |
| 373 | } |
| 374 | fpm.doFinalization(); |
| 375 | |
| 376 | // Run the code generation passes |
Logan Chien | 799ef4f | 2012-04-23 00:17:47 +0800 | [diff] [blame] | 377 | pm.run(*module_); |
Shih-wei Liao | d7726e4 | 2012-04-20 15:23:36 -0700 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | return true; |
| 381 | } |
Logan Chien | 110bcba | 2012-04-16 19:11:28 +0800 | [diff] [blame] | 382 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 383 | |
| 384 | bool CompilationUnit::ExtractCodeAndPrelink(const std::string& elf_image) { |
Shih-wei Liao | 02a1e35 | 2012-06-30 00:42:07 -0700 | [diff] [blame] | 385 | if (GetInstructionSet() == kX86) { |
| 386 | compiled_code_.push_back(0xccU); |
| 387 | compiled_code_.push_back(0xccU); |
| 388 | compiled_code_.push_back(0xccU); |
| 389 | compiled_code_.push_back(0xccU); |
| 390 | return true; |
| 391 | } |
| 392 | |
Logan Chien | 971bf3f | 2012-05-01 15:47:55 +0800 | [diff] [blame] | 393 | llvm::OwningPtr<llvm::MemoryBuffer> elf_image_buff( |
| 394 | llvm::MemoryBuffer::getMemBuffer(llvm::StringRef(elf_image.data(), |
| 395 | elf_image.size()))); |
| 396 | |
| 397 | llvm::OwningPtr<llvm::object::ObjectFile> elf_file( |
| 398 | llvm::object::ObjectFile::createELFObjectFile(elf_image_buff.take())); |
| 399 | |
| 400 | llvm::error_code ec; |
| 401 | |
| 402 | const ProcedureLinkageTable& plt = compiler_llvm_->GetProcedureLinkageTable(); |
| 403 | |
| 404 | for (llvm::object::section_iterator |
| 405 | sec_iter = elf_file->begin_sections(), |
| 406 | sec_end = elf_file->end_sections(); |
| 407 | sec_iter != sec_end; sec_iter.increment(ec)) { |
| 408 | |
| 409 | CHECK(ec == 0) << "Failed to read section because " << ec.message(); |
| 410 | |
| 411 | // Read the section information |
| 412 | llvm::StringRef name; |
| 413 | uint64_t alignment = 0u; |
| 414 | uint64_t size = 0u; |
| 415 | |
| 416 | CHECK(sec_iter->getName(name) == 0); |
| 417 | CHECK(sec_iter->getSize(size) == 0); |
| 418 | CHECK(sec_iter->getAlignment(alignment) == 0); |
| 419 | |
| 420 | if (name == ".data" || name == ".bss" || name == ".rodata") { |
| 421 | if (size > 0) { |
| 422 | LOG(FATAL) << "Compilation unit " << cunit_idx_ << " has non-empty " |
| 423 | << name.str() << " section"; |
| 424 | } |
| 425 | |
| 426 | } else if (name == "" || name == ".rel.text" || |
| 427 | name == ".ARM.attributes" || name == ".symtab" || |
| 428 | name == ".strtab" || name == ".shstrtab") { |
| 429 | // We can ignore these sections. We don't have to copy them into |
| 430 | // the result Oat file. |
| 431 | |
| 432 | } else if (name == ".text") { |
| 433 | // Ensure the alignment requirement is less than or equal to |
| 434 | // kArchAlignment |
| 435 | CheckCodeAlign(alignment); |
| 436 | |
| 437 | // Copy the compiled code |
| 438 | llvm::StringRef contents; |
| 439 | CHECK(sec_iter->getContents(contents) == 0); |
| 440 | |
| 441 | copy(contents.data(), |
| 442 | contents.data() + contents.size(), |
| 443 | back_inserter(compiled_code_)); |
| 444 | |
| 445 | // Prelink the compiled code |
| 446 | for (llvm::object::relocation_iterator |
| 447 | rel_iter = sec_iter->begin_relocations(), |
| 448 | rel_end = sec_iter->end_relocations(); rel_iter != rel_end; |
| 449 | rel_iter.increment(ec)) { |
| 450 | |
| 451 | CHECK(ec == 0) << "Failed to read relocation because " << ec.message(); |
| 452 | |
| 453 | // Read the relocation information |
| 454 | llvm::object::SymbolRef sym_ref; |
| 455 | uint64_t rel_offset = 0; |
| 456 | uint64_t rel_type = 0; |
| 457 | int64_t rel_addend = 0; |
| 458 | |
| 459 | CHECK(rel_iter->getSymbol(sym_ref) == 0); |
| 460 | CHECK(rel_iter->getOffset(rel_offset) == 0); |
| 461 | CHECK(rel_iter->getType(rel_type) == 0); |
| 462 | CHECK(rel_iter->getAdditionalInfo(rel_addend) == 0); |
| 463 | |
| 464 | // Read the symbol related to this relocation fixup |
| 465 | llvm::StringRef sym_name; |
| 466 | CHECK(sym_ref.getName(sym_name) == 0); |
| 467 | |
| 468 | // Relocate the fixup. |
| 469 | // TODO: Support more relocation type. |
| 470 | CHECK(rel_type == llvm::ELF::R_ARM_ABS32); |
| 471 | CHECK_LE(rel_offset + 4, compiled_code_.size()); |
| 472 | |
| 473 | uintptr_t dest_addr = plt.GetEntryAddress(sym_name.str().c_str()); |
| 474 | uintptr_t final_addr = dest_addr + rel_addend; |
| 475 | compiled_code_[rel_offset] = final_addr & 0xff; |
| 476 | compiled_code_[rel_offset + 1] = (final_addr >> 8) & 0xff; |
| 477 | compiled_code_[rel_offset + 2] = (final_addr >> 16) & 0xff; |
| 478 | compiled_code_[rel_offset + 3] = (final_addr >> 24) & 0xff; |
| 479 | } |
| 480 | |
| 481 | } else { |
| 482 | LOG(WARNING) << "Unexpected section: " << name.str(); |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | return true; |
| 487 | } |
| 488 | |
| 489 | |
| 490 | // Check whether the align is less than or equal to the code alignment of |
| 491 | // that architecture. Since the Oat writer only guarantee that the compiled |
| 492 | // method being aligned to kArchAlignment, we have no way to align the ELf |
| 493 | // section if the section alignment is greater than kArchAlignment. |
| 494 | void CompilationUnit::CheckCodeAlign(uint32_t align) const { |
| 495 | InstructionSet insn_set = GetInstructionSet(); |
| 496 | switch (insn_set) { |
| 497 | case kThumb2: |
| 498 | case kArm: |
| 499 | CHECK_LE(align, static_cast<uint32_t>(kArmAlignment)); |
| 500 | break; |
| 501 | |
| 502 | case kX86: |
| 503 | CHECK_LE(align, static_cast<uint32_t>(kX86Alignment)); |
| 504 | break; |
| 505 | |
| 506 | case kMips: |
| 507 | CHECK_LE(align, static_cast<uint32_t>(kMipsAlignment)); |
| 508 | break; |
| 509 | |
| 510 | default: |
| 511 | LOG(FATAL) << "Unknown instruction set: " << insn_set; |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | |
Logan Chien | 8b977d3 | 2012-02-21 19:14:55 +0800 | [diff] [blame] | 516 | } // namespace compiler_llvm |
| 517 | } // namespace art |