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// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --allow-natives-syntax --opt
"use strict";
// Check that the following functions are optimizable.
var functions = [ f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14,
f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26,
f27, f28, f29, f30, f31, f32, f33];
for (var i = 0; i < functions.length; ++i) {
var func = functions[i];
%PrepareFunctionForOptimization(func);
print("Testing:");
print(func);
for (var j = 0; j < 10; ++j) {
func(12);
}
%OptimizeFunctionOnNextCall(func);
func(12);
assertOptimized(func);
}
function f1() { }
function f2(x) { }
function f3() {
let x;
}
function f4() {
function foo() {
}
}
function f5() {
let x = 1;
}
function f6() {
const x = 1;
}
function f7(x) {
return x;
}
function f8() {
let x;
return x;
}
function f9() {
function x() {
}
return x;
}
function f10(x) {
x = 1;
}
function f11() {
let x;
x = 1;
}
function f12() {
function x() {};
x = 1;
}
function f13(x) {
(function() { x; });
}
function f14() {
let x;
(function() { x; });
}
function f15() {
function x() {
}
(function() { x; });
}
function f16() {
let x = 1;
(function() { x; });
}
function f17() {
const x = 1;
(function() { x; });
}
function f18(x) {
return x;
(function() { x; });
}
function f19() {
let x;
return x;
(function() { x; });
}
function f20() {
function x() {
}
return x;
(function() { x; });
}
function f21(x) {
x = 1;
(function() { x; });
}
function f22() {
let x;
x = 1;
(function() { x; });
}
function f23() {
function x() { }
x = 1;
(function() { x; });
}
function f24() {
let x = 1;
{
let x = 2;
{
let x = 3;
assertEquals(3, x);
}
assertEquals(2, x);
}
assertEquals(1, x);
}
function f25() {
{
let x = 2;
L: {
let x = 3;
assertEquals(3, x);
break L;
assertTrue(false);
}
assertEquals(2, x);
}
assertTrue(true);
}
function f26() {
{
let x = 1;
L: {
let x = 2;
{
let x = 3;
assertEquals(3, x);
break L;
assertTrue(false);
}
assertTrue(false);
}
assertEquals(1, x);
}
}
function f27() {
do {
let x = 4;
assertEquals(4,x);
{
let x = 5;
assertEquals(5, x);
continue;
assertTrue(false);
}
} while (false);
}
function f28() {
label: for (var i = 0; i < 10; ++i) {
let x = 'middle' + i;
for (var j = 0; j < 10; ++j) {
let x = 'inner' + j;
continue label;
}
}
}
function f29() {
// Verify that the context is correctly set in the stack frame after exiting
// from with.
let x = 'outer';
label: {
let x = 'inner';
break label;
}
f(); // The context could be restored from the stack after the call.
assertEquals('outer', x);
function f() {
assertEquals('outer', x);
};
}
function f30() {
let x = 'outer';
for (var i = 0; i < 10; ++i) {
let x = 'inner';
continue;
}
f();
assertEquals('outer', x);
function f() {
assertEquals('outer', x);
};
}
function f31() {
{
let x = 'outer';
label: for (var i = 0; assertEquals('outer', x), i < 10; ++i) {
let x = 'middle' + i;
{
let x = 'inner' + j;
continue label;
}
}
assertEquals('outer', x);
}
}
var c = true;
function f32() {
{
let x = 'outer';
L: {
{
let x = 'inner';
if (c) {
break L;
}
}
foo();
}
}
function foo() {
return 'bar';
}
}
function f33() {
{
let x = 'outer';
L: {
{
let x = 'inner';
if (c) {
break L;
}
foo();
}
}
}
function foo() {
return 'bar';
}
}
function TestThrow() {
function f() {
let x = 'outer';
{
let x = 'inner';
throw x;
}
}
%PrepareFunctionForOptimization(f);
for (var i = 0; i < 5; i++) {
try {
f();
} catch (e) {
assertEquals('inner', e);
}
}
%OptimizeFunctionOnNextCall(f);
try {
f();
} catch (e) {
assertEquals('inner', e);
}
assertOptimized(f);
}
TestThrow();
// Test that temporal dead zone semantics for function and block scoped
// let bindings are handled by the optimizing compiler.
function TestFunctionLocal(s) {
'use strict';
var func = eval("(function baz(){" + s + "; })");
%PrepareFunctionForOptimization(func);
print("Testing:");
print(func);
for (var i = 0; i < 5; ++i) {
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
%OptimizeFunctionOnNextCall(func);
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
function TestFunctionContext(s) {
'use strict';
var func = eval("(function baz(){ " + s + "; (function() { x; }); })");
%PrepareFunctionForOptimization(func);
print("Testing:");
print(func);
for (var i = 0; i < 5; ++i) {
print(i);
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
print("optimize");
%OptimizeFunctionOnNextCall(func);
try {
print("call");
func();
assertUnreachable();
} catch (e) {
print("catch");
assertInstanceof(e, ReferenceError);
}
}
function TestBlockLocal(s) {
'use strict';
var func = eval("(function baz(){ { " + s + "; } })");
%PrepareFunctionForOptimization(func);
print("Testing:");
print(func);
for (var i = 0; i < 5; ++i) {
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
%OptimizeFunctionOnNextCall(func);
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
function TestBlockContext(s) {
'use strict';
var func = eval("(function baz(){ { " + s + "; (function() { x; }); } })");
%PrepareFunctionForOptimization(func);
print("Testing:");
print(func);
for (var i = 0; i < 5; ++i) {
print(i);
try {
func();
assertUnreachable();
} catch (e) {
assertInstanceof(e, ReferenceError);
}
}
print("optimize");
%OptimizeFunctionOnNextCall(func);
try {
print("call");
func();
assertUnreachable();
} catch (e) {
print("catch");
assertInstanceof(e, ReferenceError);
}
}
function TestAll(s) {
TestFunctionLocal(s);
TestFunctionContext(s);
TestBlockLocal(s);
TestBlockContext(s);
}
// Use before initialization in declaration statement.
TestAll('let x = x + 1');
TestAll('let x = x += 1');
TestAll('let x = x++');
TestAll('let x = ++x');
TestAll('const x = x + 1');
// Use before initialization in prior statement.
TestAll('x + 1; let x;');
TestAll('x = 1; let x;');
TestAll('x += 1; let x;');
TestAll('++x; let x;');
TestAll('x++; let x;');
TestAll('let y = x; const x = 1;');
function f(x) {
let y = x + 42;
return y;
}
function g(x) {
{
let y = x + 42;
return y;
}
}
%PrepareFunctionForOptimization(f);
%PrepareFunctionForOptimization(g);
for (var i=0; i<10; i++) {
f(i);
g(i);
}
%OptimizeFunctionOnNextCall(f);
%OptimizeFunctionOnNextCall(g);
f(12);
g(12);
assertOptimized(f);
assertOptimized(g);