Function warmUpTestFn

deps/v8/test/mjsunit/compiler/string-or-oddball-compare.js:12–33

(test_fn_src)

let uniqueId = 0;

function warmUpTestFn(test_fn_src) {
  // Create a fresh and uncached function
  test_fn_src = test_fn_src.toString();
  const pattern = '(x, y) {\n';
  assertTrue(test_fn_src.includes(pattern))
  parts = test_fn_src.split(pattern)
  assertEquals(parts.length, 2)
  let test_fn = new Function('x', 'y', `{/*${uniqueId++}*/\n${parts[1]}`);

  assertUnoptimized(test_fn);
  %PrepareFunctionForOptimization(test_fn);

  // Warm up with internalized strings and oddballs.
  assertEquals(1, test_fn("2", "2"));
  assertEquals(0, test_fn("2", null));
  assertEquals(1, test_fn(internalized1234, internalized1234));

  %OptimizeFunctionOnNextCall(test_fn);
  assertEquals(0, test_fn("1", "2"));
  assertOptimized(test_fn);
  return test_fn;
}

function test(test_fn_src) {
  assertEquals(internalized1234, nonInternalized1234);