122   CompilationUnit cu(&compiler.GetArenaPool());  in CompileMethod()  local
124   cu.compiler_driver = &compiler;  in CompileMethod()
125   cu.class_linker = class_linker;  in CompileMethod()
126   cu.instruction_set = compiler.GetInstructionSet();  in CompileMethod()
127   cu.compiler_backend = compiler_backend;  in CompileMethod()
128   DCHECK((cu.instruction_set == kThumb2) ||  in CompileMethod()
129          (cu.instruction_set == kX86) ||  in CompileMethod()
130          (cu.instruction_set == kMips));  in CompileMethod()
134   cu.num_dalvik_registers = code_item->registers_size_;  in CompileMethod()
136   cu.compiler_flip_match = false;  in CompileMethod()
137   bool use_match = !cu.compiler_method_match.empty();  in CompileMethod()
138   bool match = use_match && (cu.compiler_flip_match ^  in CompileMethod()
139       (PrettyMethod(method_idx, dex_file).find(cu.compiler_method_match) !=  in CompileMethod()
142     cu.disable_opt = kCompilerOptimizerDisableFlags;  in CompileMethod()
143     cu.enable_debug = kCompilerDebugFlags;  in CompileMethod()
144     cu.verbose = VLOG_IS_ON(compiler) ||  in CompileMethod()
145         (cu.enable_debug & (1 << kDebugVerbose));  in CompileMethod()
155     cu.disable_opt |= (1 << kBranchFusing);  in CompileMethod()
158   if (cu.instruction_set == kMips) {  in CompileMethod()
160     cu.disable_opt |= (  in CompileMethod()
173   cu.mir_graph.reset(new MIRGraph(&cu, &cu.arena));  in CompileMethod()
177     cu.mir_graph->EnableOpcodeCounting();  in CompileMethod()
181   cu.mir_graph->InlineMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx,  in CompileMethod()
185   if (cu.mir_graph->SkipCompilation(Runtime::Current()->GetCompilerFilter())) {  in CompileMethod()
191   cu.mir_graph->CodeLayout();  in CompileMethod()
194   cu.mir_graph->SSATransformation();  in CompileMethod()
197   cu.mir_graph->PropagateConstants();  in CompileMethod()
200   cu.mir_graph->MethodUseCount();  in CompileMethod()
203   cu.mir_graph->NullCheckElimination();  in CompileMethod()
206   cu.mir_graph->BasicBlockCombine();  in CompileMethod()
209   cu.mir_graph->BasicBlockOptimization();  in CompileMethod()
211   if (cu.enable_debug & (1 << kDebugDumpCheckStats)) {  in CompileMethod()
212     cu.mir_graph->DumpCheckStats();  in CompileMethod()
216     cu.mir_graph->ShowOpcodeStats();  in CompileMethod()
220   cu.mir_graph->BuildRegLocations();  in CompileMethod()
226     cu.cg.reset(PortableCodeGenerator(&cu, cu.mir_graph.get(), &cu.arena, llvm_compilation_unit));  in CompileMethod()
231         cu.cg.reset(ArmCodeGenerator(&cu, cu.mir_graph.get(), &cu.arena));  in CompileMethod()
234         cu.cg.reset(MipsCodeGenerator(&cu, cu.mir_graph.get(), &cu.arena));  in CompileMethod()
237         cu.cg.reset(X86CodeGenerator(&cu, cu.mir_graph.get(), &cu.arena));  in CompileMethod()
246   cu.cg->Materialize();  in CompileMethod()
248   result = cu.cg->GetCompiledMethod();  in CompileMethod()
256   if (cu.enable_debug & (1 << kDebugShowMemoryUsage)) {  in CompileMethod()
257     if (cu.arena.BytesAllocated() > (5 * 1024 *1024)) {  in CompileMethod()
258       MemStats mem_stats(cu.arena);  in CompileMethod()
263   if (cu.enable_debug & (1 << kDebugShowSummaryMemoryUsage)) {  in CompileMethod()
264     LOG(INFO) << "MEMINFO " << cu.arena.BytesAllocated() << " " << cu.mir_graph->GetNumBlocks()  in CompileMethod()