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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
// We need a NumberModulus, so we make sure that we have a
// SpeculativeNumberModulus with Number feedback, and later
// on use it with known Number inputs (via the bitwise or),
// such that JSTypedLowering turns it into the NumberModulus.
function bar(x) { return x % 2; }
bar(0.1);
// Check that the Word32->Float64 conversion works properly.
(function() {
function foo(x) {
// The NumberEqual identifies 0 and -0.
return bar(x | -1) == 4294967295;
}
assertFalse(foo(1));
assertFalse(foo(0));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(1));
assertFalse(foo(0));
})();
// Check that the Word32->Word32 conversion works properly.
(function() {
function makeFoo(y) {
return function foo(x) {
return bar(x | -1) == y;
}
}
makeFoo(0); // Defeat the function context specialization.
const foo = makeFoo(1);
assertFalse(foo(1));
assertFalse(foo(0));
%OptimizeFunctionOnNextCall(foo);
assertFalse(foo(1));
assertFalse(foo(0));
})();
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