v8/test/mjsunit/compiler/try-deopt.js
2015-06-15 09:43:11 +00:00

56 lines
1.2 KiB
JavaScript

// Copyright 2015 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
function DeoptFromTry(x) {
try {
%DeoptimizeFunction(DeoptFromTry);
throw x;
} catch (e) {
return e + 1;
}
return x + 2;
}
%OptimizeFunctionOnNextCall(DeoptFromTry);
assertEquals(24, DeoptFromTry(23));
function DeoptFromCatch(x) {
try {
throw x;
} catch (e) {
%DeoptimizeFunction(DeoptFromCatch);
return e + 1;
}
return x + 2;
}
%OptimizeFunctionOnNextCall(DeoptFromCatch);
assertEquals(24, DeoptFromCatch(23));
function DeoptFromFinally_Return(x) {
try {
throw x;
} finally {
%DeoptimizeFunction(DeoptFromFinally_Return);
return x + 1;
}
return x + 2;
}
%OptimizeFunctionOnNextCall(DeoptFromFinally_Return);
assertEquals(24, DeoptFromFinally_Return(23));
function DeoptFromFinally_ReThrow(x) {
try {
throw x;
} finally {
%DeoptimizeFunction(DeoptFromFinally_ReThrow);
}
return x + 2;
}
%OptimizeFunctionOnNextCall(DeoptFromFinally_ReThrow);
assertThrows("DeoptFromFinally_ReThrow(new Error)", Error);