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// Copyright 2020 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: --opt --allow-natives-syntax --no-always-opt
function foo(n) {
try {
let v = 0n;
for (let i = 0; i < n; ++i) {
v = 3n + v;
v = i;
}
} catch (e) {
return 1;
}
return 0;
}
%PrepareFunctionForOptimization(foo);
assertEquals(foo(1), 0);
assertEquals(foo(1), 0);
%OptimizeFunctionOnNextCall(foo);
assertEquals(foo(1), 0);
assertOptimized(foo);
%PrepareFunctionForOptimization(foo);
assertEquals(foo(2), 1);
if (%Is64Bit()) {
assertUnoptimized(foo);
}
// Check that we learned something and do not loop deoptimizations.
%OptimizeFunctionOnNextCall(foo);
assertEquals(foo(1), 0);
assertOptimized(foo);
assertEquals(foo(2), 1);
assertOptimized(foo);
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