v8/test/mjsunit/compiler/array-buffer-is-view.js
Camillo Bruni e3e8ea5d65 [flags] Rename --opt to --turbofan
To be consistent with the all the other tiers and avoid confusion, we
rename --opt to ---turbofan, and --always-opt to --always-turbofan.

Change-Id: Ie23dc8282b3fb4cf2fbf73b6c3d5264de5d09718
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3610431
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80336}
2022-05-03 12:10:30 +00:00

67 lines
2.2 KiB
JavaScript

// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --turbofan
// Test that ObjectIsArrayBufferView lowering works correctly
// in EffectControlLinearizer in the case that the input is
// known to be a HeapObject by TurboFan. For this we use the
// simple trick with an object literal whose field `x` will
// only ever contain HeapObjects and so the representation
// tracking is going to pick it up.
(function() {
function foo(x) {
return ArrayBuffer.isView({x}.x);
}
%PrepareFunctionForOptimization(foo);
assertFalse(foo(Symbol()));
assertFalse(foo("some string"));
assertFalse(foo(new Object()));
assertFalse(foo(new Array()));
assertFalse(foo(new ArrayBuffer(1)));
assertTrue(foo(new Int32Array(1)));
assertTrue(foo(new DataView(new ArrayBuffer(1))));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(Symbol()));
assertFalse(foo("some string"));
assertFalse(foo(new Object()));
assertFalse(foo(new Array()));
assertFalse(foo(new ArrayBuffer(1)));
assertTrue(foo(new Int32Array(1)));
assertTrue(foo(new DataView(new ArrayBuffer(1))));
assertOptimized(foo);
})();
// Test that ObjectIsArrayBufferView lowering works correctly
// in EffectControlLinearizer in the case that the input is
// some arbitrary tagged value.
(function() {
function foo(x) {
return ArrayBuffer.isView(x);
}
%PrepareFunctionForOptimization(foo);
assertFalse(foo(1));
assertFalse(foo(1.1));
assertFalse(foo(Symbol()));
assertFalse(foo("some string"));
assertFalse(foo(new Object()));
assertFalse(foo(new Array()));
assertFalse(foo(new ArrayBuffer(1)));
assertTrue(foo(new Int32Array(1)));
assertTrue(foo(new DataView(new ArrayBuffer(1))));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(1));
assertFalse(foo(1.1));
assertFalse(foo(Symbol()));
assertFalse(foo("some string"));
assertFalse(foo(new Object()));
assertFalse(foo(new Array()));
assertFalse(foo(new ArrayBuffer(1)));
assertTrue(foo(new Int32Array(1)));
assertTrue(foo(new DataView(new ArrayBuffer(1))));
assertOptimized(foo);
})();