[wasm] Avoid double-serializing the wire bytes

test/mjsunit/wasm/compiled-module-serialization.js

 // 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.
 
 // Flags: --expose-wasm --allow-natives-syntax --expose-gc
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 (function SerializeAndDeserializeModule() {
@@ skipping 17 matching lines @@
     ]).exportFunc();
 
   // writer(mem[i]);
   // return mem[i] + some_value();
   builder.addFunction("_wrap_writer", signature)
     .addBody([
       kExprGetLocal, 0,
       kExprCallFunction, 1]);
   builder.appendToTable([2, 3]);
 
-
-  var module = new WebAssembly.Module(builder.toBuffer());
+  var wire_bytes = builder.toBuffer();
+  var module = new WebAssembly.Module(wire_bytes);
   var buff = %SerializeWasmModule(module);
   module = null;
   gc();
-  module = %DeserializeWasmModule(buff);
+  module = %DeserializeWasmModule(buff, wire_bytes);
 
   var mem_1 = new ArrayBuffer(4);
   var view_1 = new Int32Array(mem_1);
 
   view_1[0] = 42;
 
   var outval_1;
   var i1 = new WebAssembly.Instance(module, {some_value: () => 1,
                                     writer: (x)=>outval_1 = x }, mem_1);
 
   assertEquals(43, i1.exports.main(0));
 
   assertEquals(42, outval_1);
 })();
 
 (function DeserializeInvalidObject() {
   var invalid_buffer = new ArrayBuffer(10);
 
-  module = %DeserializeWasmModule(invalid_buffer);
+  module = %DeserializeWasmModule(invalid_buffer, invalid_buffer);
   assertEquals(module, undefined);
 })();
 
 (function RelationBetweenModuleAndClone() {
   let builder = new WasmModuleBuilder();
   builder.addFunction("main", kSig_i_v)
     .addBody([kExprI8Const, 42])
     .exportFunc();
 
-  var compiled_module = new WebAssembly.Module(builder.toBuffer());
+  var wire_bytes = builder.toBuffer();
+  var compiled_module = new WebAssembly.Module(wire_bytes);
   var serialized = %SerializeWasmModule(compiled_module);
-  var clone = %DeserializeWasmModule(serialized);
+  var clone = %DeserializeWasmModule(serialized, wire_bytes);
 
   assertNotNull(clone);
   assertFalse(clone == undefined);
   assertFalse(clone == compiled_module);
   assertEquals(clone.constructor, compiled_module.constructor);
 })();
 
 (function SerializeAfterInstantiation() {
   let builder = new WasmModuleBuilder();
   builder.addFunction("main", kSig_i_v)
     .addBody([kExprI8Const, 42])
     .exportFunc();
 
-  var compiled_module = new WebAssembly.Module(builder.toBuffer());
+  var wire_bytes = builder.toBuffer()
+  var compiled_module = new WebAssembly.Module(wire_bytes);
   var instance1 = new WebAssembly.Instance(compiled_module);
   var instance2 = new WebAssembly.Instance(compiled_module);
   var serialized = %SerializeWasmModule(compiled_module);
-  var clone = %DeserializeWasmModule(serialized);
+  var clone = %DeserializeWasmModule(serialized, wire_bytes);
 
   assertNotNull(clone);
   assertFalse(clone == undefined);
   assertFalse(clone == compiled_module);
   assertEquals(clone.constructor, compiled_module.constructor);
   var instance3 = new WebAssembly.Instance(clone);
   assertFalse(instance3 == undefined);
 })();