Add __init__ function to all modules created in asm-to-wasm

src/wasm/encoder.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_WASM_ENCODER_H_
 #define V8_WASM_ENCODER_H_
 
 #include "src/signature.h"
 #include "src/zone-containers.h"
 
@@ skipping 47 matching lines @@
   void EmitCode(const byte* code, uint32_t code_size);
   void EmitCode(const byte* code, uint32_t code_size,
                 const uint32_t* local_indices, uint32_t indices_size);
   void Emit(WasmOpcode opcode);
   void EmitWithU8(WasmOpcode opcode, const byte immediate);
   void EmitWithLocal(WasmOpcode opcode);
   uint32_t EmitEditableImmediate(const byte immediate);
   void EditImmediate(uint32_t offset, const byte immediate);
   void Exported(uint8_t flag);
   void External(uint8_t flag);
+  void SetName(const unsigned char* name, int name_length);
   WasmFunctionEncoder* Build(Zone* zone, WasmModuleBuilder* mb) const;
 
  private:
-  WasmFunctionBuilder(Zone* zone, const unsigned char* name, int name_length);
+  explicit WasmFunctionBuilder(Zone* zone);
   friend class WasmModuleBuilder;
   LocalType return_type_;
   struct Type;
   ZoneVector<Type> locals_;
   uint8_t exported_;
   uint8_t external_;
   ZoneVector<uint8_t> body_;
   ZoneVector<uint32_t> local_indices_;
   ZoneVector<char> name_;
   uint16_t AddVar(LocalType type, bool param);
@@ skipping 36 matching lines @@
   ZoneVector<WasmFunctionEncoder*> functions_;
   ZoneVector<WasmDataSegmentEncoder*> data_segments_;
   ZoneVector<FunctionSig*> signatures_;
   ZoneVector<uint16_t> indirect_functions_;
   ZoneVector<std::pair<MachineType, bool>> globals_;
 };
 
 class WasmModuleBuilder : public ZoneObject {
  public:
   explicit WasmModuleBuilder(Zone* zone);
-  uint16_t AddFunction(const unsigned char* name = nullptr,
-                       int name_length = 0);
+  uint16_t AddFunction();
   uint32_t AddGlobal(MachineType type, bool exported);
   WasmFunctionBuilder* FunctionAt(size_t index);
   void AddDataSegment(WasmDataSegmentEncoder* data);
   uint16_t AddSignature(FunctionSig* sig);
   void AddIndirectFunction(uint16_t index);
   WasmModuleWriter* Build(Zone* zone);
 
  private:
   struct CompareFunctionSigs {
     int operator()(FunctionSig* a, FunctionSig* b) const;
   };
   typedef ZoneMap<FunctionSig*, uint16_t, CompareFunctionSigs> SignatureMap;
 
   Zone* zone_;
   ZoneVector<FunctionSig*> signatures_;
   ZoneVector<WasmFunctionBuilder*> functions_;
   ZoneVector<WasmDataSegmentEncoder*> data_segments_;
   ZoneVector<uint16_t> indirect_functions_;
   ZoneVector<std::pair<MachineType, bool>> globals_;
   SignatureMap signature_map_;
 };
 
 std::vector<uint8_t> UnsignedLEB128From(uint32_t result);
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_ENCODER_H_