blob: fb685c0a76c0661ef46ded945da080ca33c13910 [file] [log] [blame]
// Copyright 2016 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 LazyDeoptFromTryBlock() {
function g(dummy) {
%DeoptimizeFunction(f);
throw 42;
}
function f() {
var a = 1;
try {
var dummy = 2; // perturb the stack height.
g(dummy);
} catch (e) {
return e + a;
}
}
%PrepareFunctionForOptimization(f);
assertEquals(43, f());
assertEquals(43, f());
%NeverOptimizeFunction(g);
%OptimizeFunctionOnNextCall(f);
assertEquals(43, f());
})();
(function LazyDeoptDoublyNestedTryBlock() {
function g(dummy) {
%DeoptimizeFunction(f);
throw 42;
}
function f() {
var b;
try {
var a = 1;
try {
var dummy = 2; // perturb the stack height.
g(dummy);
} catch (e) {
b = e + a;
}
} catch (e) {
return 0;
}
return b;
}
%PrepareFunctionForOptimization(f);
assertEquals(43, f());
assertEquals(43, f());
%NeverOptimizeFunction(g);
%OptimizeFunctionOnNextCall(f);
assertEquals(43, f());
})();
(function LazyDeoptInlinedTry() {
function g(dummy) {
%DeoptimizeFunction(f);
%DeoptimizeFunction(h);
throw 42;
}
function h() {
var a = 1;
try {
var dummy = 2; // perturb the stack height.
g(dummy);
} catch (e) {
b = e + a;
}
return b;
}
function f() {
var c = 1;
return h() + 1;
}
%PrepareFunctionForOptimization(f);
assertEquals(44, f());
assertEquals(44, f());
%NeverOptimizeFunction(g);
%OptimizeFunctionOnNextCall(f);
assertEquals(44, f());
})();
(function LazyDeoptInlinedIntoTry() {
function g(c) {
%DeoptimizeFunction(f);
%DeoptimizeFunction(h);
throw c;
}
function h(c) {
return g(c);
}
function f() {
var a = 1;
try {
var c = 42; // perturb the stack height.
h(c);
} catch (e) {
a += e;
}
return a;
}
%PrepareFunctionForOptimization(f);
assertEquals(43, f());
assertEquals(43, f());
%NeverOptimizeFunction(g);
%OptimizeFunctionOnNextCall(f);
assertEquals(43, f());
})();
(function LazyDeoptTryBlockContextCatch() {
var global = 0;
function g() {
%DeoptimizeFunction(f);
throw "boom!";
}
function f(a) {
var x = a + 23
try {
let y = a + 42;
function capture() { return x + y }
g();
} catch(e) {
global = x;
}
return x;
}
%PrepareFunctionForOptimization(f);
assertEquals(23, f(0));
assertEquals(24, f(1));
%OptimizeFunctionOnNextCall(f);
assertEquals(25, f(2));
assertEquals(25, global);
})();
(function LazyDeoptTryBlockFinally() {
var global = 0;
function g() {
%DeoptimizeFunction(f);
throw "boom!";
}
function f(a) {
var x = a + 23
try {
let y = a + 42;
function capture() { return x + y }
g();
} finally {
global = x;
}
return x;
}
%PrepareFunctionForOptimization(f);
assertThrows(function() { f(0) });
assertThrows(function() { f(1) });
%OptimizeFunctionOnNextCall(f);
assertThrowsEquals(function() { f(2) }, "boom!");
assertEquals(25, global);
})();
(function LazyDeoptTryCatchContextCatch() {
var global = 0;
function g() {
%DeoptimizeFunction(f);
throw 5;
}
function f(a) {
var x = a + 23
try {
try {
throw 1;
} catch(e2) {
function capture() { return x + y }
g();
}
} catch(e) {
global = x + e;
}
return x;
}
%PrepareFunctionForOptimization(f);
assertEquals(23, f(0));
assertEquals(24, f(1));
%OptimizeFunctionOnNextCall(f);
assertEquals(25, f(2));
assertEquals(30, global);
})();
(function LazyDeoptTryWithContextCatch() {
var global = 0;
function g() {
%DeoptimizeFunction(f);
throw 5;
}
function f(a) {
var x = a + 23
try {
with ({ y : a + 42 }) {
function capture() { return x + y }
g();
}
} catch(e) {
global = x + e;
}
return x;
}
%PrepareFunctionForOptimization(f);
assertEquals(23, f(0));
assertEquals(24, f(1));
%OptimizeFunctionOnNextCall(f);
assertEquals(25, f(2));
assertEquals(30, global);
})();