[wasm] Names of exported functions should be the stringified function index.

test/mjsunit/wasm/indirect-tables.js

 // 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.
 
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 function AddFunctions(builder) {
@@ skipping 63 matching lines @@
 
     print("  mul=" + mul);
     print("  add=" + add);
     print("  sub=" + sub);
     assertEquals("function", typeof mul);
     assertEquals("function", typeof add);
     assertEquals("function", typeof sub);
     assertEquals(2, mul.length);
     assertEquals(2, add.length);
     assertEquals(2, sub.length);
-    assertEquals("blarg", add.name);
+    assertEquals(String(f.add.index), add.name);
 
     let exp_div = table.get(i+3);
     assertEquals("function", typeof exp_div);
     print("  js_div=" + exp_div);
     // Should have a new, wrapped version of the import.
     assertFalse(js_div == exp_div);
 
 
     for (let j = i + 4; j < 10; j++) {
       assertSame(null, table.get(j));
@@ skipping 273 matching lines @@
         var i2 = new WebAssembly.Instance(m2, ffi);
       } else {
         assertThrows(() => new WebAssembly.Instance(m2, ffi));
       }
     }
   }
 
 
 
 })();