16e03e7968
PR-URL: https://github.com/nodejs/node/pull/45579 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
25 lines
813 B
JavaScript
25 lines
813 B
JavaScript
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --turbofan --no-always-turbofan
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function f(a, b, c) {
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// CheckBigInt64 is required if the type of input is UnsignedBigInt64
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// because its value can be out of the range of SignedBigInt64.
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let t = BigInt.asUintN(64, a + b);
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// The addition is speculated as CheckedInt64Add and triggers the deopt
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// for the large value coming in through <t>.
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return t + c;
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}
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%PrepareFunctionForOptimization(f);
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assertEquals(12n, f(9n, 2n, 1n));
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%OptimizeFunctionOnNextCall(f);
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assertEquals(12n, f(9n, 2n, 1n));
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assertOptimized(f);
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assertEquals(2n ** 64n, f(1n, -2n, 1n));
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if (%Is64Bit()) {
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assertUnoptimized(f);
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}
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