Reland addition of init function for asm->wasm.

test/mjsunit/wasm/asm-wasm.js

Index: test/mjsunit/wasm/asm-wasm.js
diff --git a/test/mjsunit/wasm/asm-wasm.js b/test/mjsunit/wasm/asm-wasm.js
index 8a803cdcd4616982e15a82020199df9e03d1bcdf..adb37d1268a387410fa1b17582ceca2cbc0d826d 100644
--- a/test/mjsunit/wasm/asm-wasm.js
+++ b/test/mjsunit/wasm/asm-wasm.js
@@ -512,48 +512,42 @@ function TestModDoubleNegative() {
 assertEquals(28, WASM.asmCompileRun(TestModDoubleNegative.toString()));
 */
 
-function TestGlobals() {
+function TestNamedFunctions() {
   "use asm";
 
   var a = 0.0;
   var b = 0.0;
-  var c = 0.0;
 
   function add() {
-    c = a + b;
+    return +(a + b);
   }
 
-  function caller() {
-    a = 23.75;
-    b = 7.75;
-    add();
-    return (~~c)|0;
+  function init() {
+    a = 43.25;
+    b = 34.25;
   }
 
-  return {caller:caller};
+  return {init:init,
+          add:add};
 }
 
-assertEquals(31, WASM.asmCompileRun(TestGlobals.toString()));
+var module = WASM.instantiateModuleFromAsm(TestNamedFunctions.toString());
+module.init();
+assertEquals(77.5, module.add());
 
 function TestGlobalsWithInit() {
   "use asm";
 
-  var a = 0.0;
-  var b = 0.0;
+  var a = 43.25;
+  var b = 34.25;
 
   function add() {
     return +(a + b);
   }
 
-  function init() {
-    a = 43.25;
-    b = 34.25;
-  }
-
-  return {init:init,
-          add:add};
+  return {add:add};
 }
 
 var module = WASM.instantiateModuleFromAsm(TestGlobalsWithInit.toString());
-module.init();
+module.__init__();
 assertEquals(77.5, module.add());