Revert "Revert "[wasm] Complete separation of compilation and instantiation""

src/wasm/wasm-js.cc

 // 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.
 
 #include "src/api-natives.h"
 #include "src/api.h"
 #include "src/assert-scope.h"
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/execution.h"
@@ skipping 179 matching lines @@
       ffi = i::Handle<i::JSReceiver>::cast(v8::Utils::OpenHandle(*obj));
     }
 
     i::Handle<i::JSArrayBuffer> memory = i::Handle<i::JSArrayBuffer>::null();
     if (args.Length() > 2 && args[2]->IsArrayBuffer()) {
       Local<Object> obj = Local<Object>::Cast(args[2]);
       i::Handle<i::Object> mem_obj = v8::Utils::OpenHandle(*obj);
       memory = i::Handle<i::JSArrayBuffer>(i::JSArrayBuffer::cast(*mem_obj));
     }
 
-    object = result.val->Instantiate(isolate, ffi, memory);
-    if (!object.is_null()) {
-      args.GetReturnValue().Set(v8::Utils::ToLocal(object.ToHandleChecked()));
+    i::MaybeHandle<i::FixedArray> compiled_module =
+        result.val->CompileFunctions(isolate);
+    if (!compiled_module.is_null()) {
+      object = i::wasm::WasmModule::Instantiate(
+          isolate, compiled_module.ToHandleChecked(), ffi, memory);
+      if (!object.is_null()) {
+        args.GetReturnValue().Set(v8::Utils::ToLocal(object.ToHandleChecked()));
+      }
     }
   }
 
   if (result.val) delete result.val;
   return object;
 }
 
 void InstantiateModuleFromAsm(const v8::FunctionCallbackInfo<v8::Value>& args) {
   HandleScope scope(args.GetIsolate());
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate());
@@ skipping 279 matching lines @@
     int unused_property_fields = in_object_properties - pre_allocated;
     Handle<Map> map = Map::CopyInitialMap(
         prev_map, instance_size, in_object_properties, unused_property_fields);
 
     context->set_wasm_function_map(*map);
   }
 }
 
 }  // namespace internal
 }  // namespace v8