blob: 2d8ae75e7738dde13f0341a6e83f4b006d1ea4a1 [file] [log] [blame]
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Test that type tests are not misoptimized.
// VMOptions=--optimization-counter-threshold=1000 --optimization-filter=IsAnInt
main() {
if (IsAnInt("This is not an int")) throw "oops";
// Prime the IC with things that are and are not ints.
void train() {
for (int i = 0; i < 10000; i++) {
IsAnInt(42); // Smi - always goes first in the generated code.
IsAnInt(1 << 62); // Mint on 64 bit platforms.
IsAnInt(1 << 62);
// This one that is not an int goes last in the IC because it is called
// less frequently.
bool IsAnInt(f) => f is int;