// Copyright 2021 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 --no-always-turbofan function f(x) { return BigInt.asUintN(3, x); } %PrepareFunctionForOptimization(f); assertEquals(7n, f(7n)); assertEquals(1n, f(9n)); %OptimizeFunctionOnNextCall(f); assertEquals(7n, f(7n)); assertEquals(1n, f(9n)); assertOptimized(f); // BigInt.asUintN throws TypeError for non-BigInt arguments. assertThrows(() => f(2), TypeError); if(%Is64Bit()) { // On 64 bit architectures TurboFan optimizes BigInt.asUintN to native code // that deoptimizes on non-BigInt arguments. assertUnoptimized(f); // The next time the function is optimized, speculation should be disabled // so the builtin call is kept, which won't deoptimize again. %PrepareFunctionForOptimization(f); %OptimizeFunctionOnNextCall(f); } assertEquals(7n, f(7n)); assertOptimized(f); // Re-optimized still throws but does not deopt-loop. assertThrows(() => f(2), TypeError); assertOptimized(f);