[wasm] instantiate expressed in terms of compile

test/mjsunit/wasm/wasm-api-overloading.js

Index: test/mjsunit/wasm/wasm-api-overloading.js
diff --git a/test/mjsunit/wasm/wasm-api-overloading.js b/test/mjsunit/wasm/wasm-api-overloading.js
new file mode 100644
index 0000000000000000000000000000000000000000..ccd4aa93ebea7e0f1bf550d84b6b19c30771e69f
--- /dev/null
+++ b/test/mjsunit/wasm/wasm-api-overloading.js
@@ -0,0 +1,39 @@
+// Copyright 2017 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: --allow-natives-syntax
+
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+%ResetWasmOverloads();
+let buffer = (() => {
+  let builder = new WasmModuleBuilder();
+  builder.addFunction("f", kSig_i_v)
+    .addBody([kExprI32Const, 42])
+    .exportAs("f");
+  return builder.toBuffer();
+})();
+
+var module = new WebAssembly.Module(buffer);
+var wrapper = [module];
+
+assertPromiseResult(
+  WebAssembly.instantiate(wrapper),
+  assertUnreachable,
+  e => assertTrue(e instanceof TypeError));
+
+assertPromiseResult(
+  (() => {
+    %SetWasmCompileFromPromiseOverload();
+    return WebAssembly.instantiate(wrapper);
+  })(),
+  pair => {
+    print(2);
+    var pair = result.pair;
+    assertTrue(pair.instance instanceof WebAssembly.Instance);
+    assertTrue(pair.module instanceof WebAssembly.Module);
+    %ResetWasmOverloads();
+  },
+  assertUnreachable);