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// 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 --opt --noalways-opt
// Known symbols abstract equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo() { return a == b; }
%PrepareFunctionForOptimization(foo);
assertFalse(foo());
assertFalse(foo());
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo());
})();
// Known symbols abstract in-equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo() { return a != b; }
%PrepareFunctionForOptimization(foo);
assertTrue(foo());
assertTrue(foo());
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo());
})();
// Known symbol on one side abstract equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo(a) { return a == b; }
// Warmup
%PrepareFunctionForOptimization(foo);
assertTrue(foo(b));
assertFalse(foo(a));
assertTrue(foo(b));
assertFalse(foo(a));
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo(b));
assertFalse(foo(a));
assertOptimized(foo);
// Make optimized code bail out
assertFalse(foo("a"));
assertUnoptimized(foo);
// Make sure TurboFan learns the new feedback
%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo("a"));
assertOptimized(foo);
})();
// Known symbol on one side abstract in-equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo(a) { return a != b; }
// Warmup
%PrepareFunctionForOptimization(foo);
assertFalse(foo(b));
assertTrue(foo(a));
assertFalse(foo(b));
assertTrue(foo(a));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(b));
assertTrue(foo(a));
// Make optimized code bail out
assertTrue(foo("a"));
assertUnoptimized(foo);
// Make sure TurboFan learns the new feedback
%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo("a"));
assertOptimized(foo);
})();
// Feedback based symbol abstract equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo(a, b) { return a == b; }
// Warmup
%PrepareFunctionForOptimization(foo);
assertTrue(foo(b, b));
assertFalse(foo(a, b));
assertTrue(foo(a, a));
assertFalse(foo(b, a));
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo(a, a));
assertFalse(foo(b, a));
// Make optimized code bail out
assertFalse(foo("a", b));
assertUnoptimized(foo);
// Make sure TurboFan learns the new feedback
%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo("a", b));
assertOptimized(foo);
})();
// Feedback based symbol abstract in-equality.
(function() {
const a = Symbol("a");
const b = Symbol("b");
function foo(a, b) { return a != b; }
%PrepareFunctionForOptimization(foo);
assertFalse(foo(b, b));
assertTrue(foo(a, b));
assertFalse(foo(a, a));
assertTrue(foo(b, a));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(a, a));
assertTrue(foo(b, a));
// Make optimized code bail out
assertTrue(foo("a", b));
assertUnoptimized(foo);
// Make sure TurboFan learns the new feedback
%PrepareFunctionForOptimization(foo);
%OptimizeFunctionOnNextCall(foo);
assertTrue(foo("a", b));
assertOptimized(foo);
})();
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