[wasm][asm.js] Fail sooner if eval is present.

test/mjsunit/asm/regress-672045.js

Index: test/mjsunit/asm/regress-672045.js
diff --git a/test/mjsunit/asm/regress-672045.js b/test/mjsunit/asm/regress-672045.js
new file mode 100644
index 0000000000000000000000000000000000000000..43cde552fce6734353f99c07bd01e8f62082b67b
--- /dev/null
+++ b/test/mjsunit/asm/regress-672045.js
@@ -0,0 +1,13 @@
+// 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: --validate-asm --allow-natives-syntax
+
+function Module(stdlib, env) {
+  "use asm";
+  var x = env.bar|0;
+  return { foo: function(y) { return eval(1); } };
+}
+Module();
+assertTrue(%IsAsmWasmCode(Module));