[wasm] Get rid of extra wrappers when import another wasm export

test/cctest/wasm/wasm-run-utils.h

 // Copyright 2016 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 WASM_RUN_UTILS_H
 #define WASM_RUN_UTILS_H
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 193 matching lines @@
   }
 
   Handle<JSFunction> WrapCode(uint32_t index) {
     // Wrap the code so it can be called as a JS function.
     Handle<String> name = isolate_->factory()->NewStringFromStaticChars("main");
     Handle<JSObject> module_object = Handle<JSObject>(0, isolate_);
     Handle<Code> code = instance->function_code[index];
     WasmJs::InstallWasmFunctionMap(isolate_, isolate_->native_context());
     Handle<Code> ret_code =
         compiler::CompileJSToWasmWrapper(isolate_, this, code, index);
+    FunctionSig* funcSig = this->module->functions[index].sig;
+    Handle<ByteArray> exportedSig = isolate_->factory()->NewByteArray(
+        static_cast<int>(funcSig->parameter_count() + funcSig->return_count()),
+        TENURED);
+    exportedSig->copy_in(0, reinterpret_cast<const byte*>(funcSig->raw_data()),
+                         exportedSig->length());
     Handle<JSFunction> ret = WrapExportCodeAsJSFunction(
         isolate_, ret_code, name,
         static_cast<int>(this->module->functions[index].sig->parameter_count()),
-        module_object);
+        exportedSig, module_object);
     return ret;
   }
 
   void SetFunctionCode(uint32_t index, Handle<Code> code) {
     instance->function_code[index] = code;
   }
 
   void AddIndirectFunctionTable(uint16_t* functions, uint32_t table_size) {
     module_.function_tables.push_back(
         {table_size, table_size, std::vector<uint16_t>()});
@@ skipping 540 matching lines @@
 // interpreter.
 #define WASM_EXEC_TEST(name)                                               \
   void RunWasm_##name(WasmExecutionMode execution_mode);                   \
   TEST(RunWasmCompiled_##name) { RunWasm_##name(kExecuteCompiled); }       \
   TEST(RunWasmInterpreted_##name) { RunWasm_##name(kExecuteInterpreted); } \
   void RunWasm_##name(WasmExecutionMode execution_mode)
 
 }  // namespace
 
 #endif