Function test

deps/v8/test/mjsunit/migrations.js:10–80

(ctor_desc, use_desc, migr_desc)

var verbose = 0;

function test(ctor_desc, use_desc, migr_desc) {
  var n = 5;
  var objects = [];
  var results = [];

  if (verbose) {
    print();
    print("===========================================================");
    print("=== " + ctor_desc.name +
          " | " + use_desc.name + " |--> " + migr_desc.name);
    print("===========================================================");
  }

  // Clean ICs and transitions.
  %NotifyContextDisposed();
  gc(); gc(); gc();


  // create objects
  if (verbose) {
    print("-----------------------------");
    print("--- construct");
    print();
  }
  for (var i = 0; i < n; i++) {
    objects[i] = ctor_desc.ctor.apply(ctor_desc, ctor_desc.args(i));
  }

  try {
    // use them
    if (verbose) {
      print("-----------------------------");
      print("--- use 1");
      print();
    }
    var use = use_desc.use1;
    for (var i = 0; i < n; i++) {
      if (i == 3) %OptimizeFunctionOnNextCall(use);
      results[i] = use(objects[i], i);
    }

    // trigger migrations
    if (verbose) {
      print("-----------------------------");
      print("--- trigger migration");
      print();
    }
    var migr = migr_desc.migr;
    for (var i = 0; i < n; i++) {
      if (i == 3) %OptimizeFunctionOnNextCall(migr);
      migr(objects[i], i);
    }

    // use again
    if (verbose) {
      print("-----------------------------");
      print("--- use 2");
      print();