[wasm] Implement parallel compilation.

test/mjsunit/wasm/wasm-module-builder.js

Index: test/mjsunit/wasm/wasm-module-builder.js
diff --git a/test/mjsunit/wasm/wasm-module-builder.js b/test/mjsunit/wasm/wasm-module-builder.js
index 2e8c23ee2ed7b87de359827fb42ca95b55b2764f..e317abf3c44e52155d24d55fe821f2949383d25d 100644
--- a/test/mjsunit/wasm/wasm-module-builder.js
+++ b/test/mjsunit/wasm/wasm-module-builder.js
@@ -342,3 +342,36 @@ WasmModuleBuilder.prototype.instantiate = function(ffi, memory) {
       return Wasm.instantiateModule(buffer, ffi);
     }
 }
+
+function assertModule(module, memsize) {

[titzer, 2016/05/10 12:32:11]

These are assertion (testing) functions, so they don't really belong with the
builder. It'd be better to either factor them out to another common file or just
duplicate them in the new test.

[ahaas, 2016/05/11 09:52:21]

I duplicated the code now.

+  // Check the module exists.
+  assertFalse(module === undefined);
+  assertFalse(module === null);
+  assertFalse(module === 0);
+  assertEquals("object", typeof module);
+
+  // Check the memory is an ArrayBuffer.
+  var mem = module.exports.memory;
+  assertFalse(mem === undefined);
+  assertFalse(mem === null);
+  assertFalse(mem === 0);
+  assertEquals("object", typeof mem);
+  assertTrue(mem instanceof ArrayBuffer);
+  for (var i = 0; i < 4; i++) {
+    module.exports.memory = 0;  // should be ignored
+    assertEquals(mem, module.exports.memory);
+  }
+
+  assertEquals(memsize, module.exports.memory.byteLength);
+}
+
+function assertFunction(module, func) {
+  assertEquals("object", typeof module.exports);
+
+  var exp = module.exports[func];
+  assertFalse(exp === undefined);
+  assertFalse(exp === null);
+  assertFalse(exp === 0);
+  assertEquals("function", typeof exp);
+  return exp;
+}