Enabling some embenchen tests running through asm->wasm.

test/mjsunit/wasm/embenchen/primes.js

 // Modified embenchen to direct to asm-wasm.
 // Flags: --expose-wasm
 
 var EXPECTED_OUTPUT = 'lastprime: 387677.\n';
 var Module = {
   arguments: [1],
   print: function(x) {Module.printBuffer += x + '\n';},
   preRun: [function() {Module.printBuffer = ''}],
   postRun: [function() {
     assertEquals(EXPECTED_OUTPUT, Module.printBuffer);
@@ skipping 5761 matching lines @@
  return STACKTOP | 0;
 }
 
 // EMSCRIPTEN_END_FUNCS
 
 
   return { _strlen: _strlen, _memcpy: _memcpy, _main: _main, _memset: _memset, runPostSets: runPostSets, stackAlloc: stackAlloc, stackSave: stackSave, stackRestore: stackRestore, setThrew: setThrew, setTempRet0: setTempRet0, setTempRet1: setTempRet1, setTempRet2: setTempRet2, setTempRet3: setTempRet3, setTempRet4: setTempRet4, setTempRet5: setTempRet5, setTempRet6: setTempRet6, setTempRet7: setTempRet7, setTempRet8: setTempRet8, setTempRet9: setTempRet9 };
 }).toString(),
 // EMSCRIPTEN_END_ASM
 { "Math": Math, "Int8Array": Int8Array, "Int16Array": Int16Array, "Int32Array": Int32Array, "Uint8Array": Uint8Array, "Uint16Array": Uint16Array, "Uint32Array": Uint32Array, "Float32Array": Float32Array, "Float64Array": Float64Array, "abort": abort, "assert": assert, "asmPrintInt": asmPrintInt, "asmPrintFloat": asmPrintFloat, "min": Math_min, "_free": _free, "_emscripten_memcpy_big": _emscripten_memcpy_big, "_printf": _printf, "_send": _send, "_pwrite": _pwrite, "_sqrtf": _sqrtf, "__reallyNegative": __reallyNegative, "_fwrite": _fwrite, "_malloc": _malloc, "_mkport": _mkport, "_fprintf": _fprintf, "___setErrNo": ___setErrNo, "__formatString": __formatString, "_fileno": _fileno, "_fflush": _fflush, "_write": _write, "STACKTOP": STACKTOP, "STACK_MAX": STACK_MAX, "tempDoublePtr": tempDoublePtr, "ABORT": ABORT, "NaN": NaN, "Infinity": Infinity }, buffer);
-asm.__init__();
 var _strlen = Module["_strlen"] = asm["_strlen"];
 var _memcpy = Module["_memcpy"] = asm["_memcpy"];
 var _main = Module["_main"] = asm["_main"];
 var _memset = Module["_memset"] = asm["_memset"];
 var runPostSets = Module["runPostSets"] = asm["runPostSets"];
 
 Runtime.stackAlloc = function(size) { return asm['stackAlloc'](size) };
 Runtime.stackSave = function() { return asm['stackSave']() };
 Runtime.stackRestore = function(top) { asm['stackRestore'](top) };
 
@@ skipping 186 matching lines @@
 }
 
 // shouldRunNow refers to calling main(), not run().
 var shouldRunNow = true;
 if (Module['noInitialRun']) {
   shouldRunNow = false;
 }
 
 
 run([].concat(Module["arguments"]));