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Diffstat (limited to 'deps/v8/test/mjsunit/compiler/strict-equal-symbol.js')
-rw-r--r-- | deps/v8/test/mjsunit/compiler/strict-equal-symbol.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/strict-equal-symbol.js b/deps/v8/test/mjsunit/compiler/strict-equal-symbol.js new file mode 100644 index 0000000000..aee1ecfa60 --- /dev/null +++ b/deps/v8/test/mjsunit/compiler/strict-equal-symbol.js @@ -0,0 +1,50 @@ +// 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 + +// Known symbols strict equality. +(function() { + const a = Symbol("a"); + const b = Symbol("b"); + + function foo() { return a === b; } + + assertFalse(foo()); + assertFalse(foo()); + %OptimizeFunctionOnNextCall(foo); + assertFalse(foo()); +})(); + +// Known symbol on one side strict equality. +(function() { + const a = Symbol("a"); + const b = Symbol("b"); + + function foo(a) { return a === b; } + + assertTrue(foo(b)); + assertFalse(foo(a)); + assertTrue(foo(b)); + assertFalse(foo(a)); + %OptimizeFunctionOnNextCall(foo); + assertTrue(foo(b)); + assertFalse(foo(a)); +})(); + +// Feedback based symbol strict equality. +(function() { + const a = Symbol("a"); + const b = Symbol("b"); + + function foo(a, b) { return a === b; } + + 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)); +})(); |