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// Test transpiling of LoadFunctionLengthResult and cover possible bailout conditions.
function empty() {}
// Note: Typically won't use LoadFunctionLengthResult, because the "length"
// property will be resolved on the first access.
function testGlobalFunction() {
for (var i = 0; i < 200; ++i) {
assertEq(empty.length, 0);
}
}
testGlobalFunction();
// Note: Typically won't use LoadFunctionLengthResult, because the "length"
// property will be resolved on the first access.
function testInnerFunction() {
function f() {}
for (var i = 0; i < 200; ++i) {
assertEq(f.length, 0);
}
}
testInnerFunction();
function testPerLoopFunction() {
for (var i = 0; i < 200; ++i) {
assertEq(function(){}.length, 0);
}
}
testPerLoopFunction();
// Note: Typically won't use LoadFunctionLengthResult, because the "length"
// property will be resolved on the first access.
function testNativeFunction() {
for (var i = 0; i < 200; ++i) {
assertEq(Math.max.length, 2);
}
}
testNativeFunction();
// Note: Typically won't use LoadFunctionLengthResult, because the "length"
// property will be resolved on the first access.
function testSelfHostedFunction() {
for (var i = 0; i < 200; ++i) {
assertEq(Array.prototype.forEach.length, 1);
}
}
testSelfHostedFunction();
// Bailout when the length doesn't fit into int32.
function testBailoutLength() {
var values = [0, 0x80000000];
var bound = empty.bind();
for (var i = 0; i < 10; ++i) {
var value = values[0 + (i >= 5)];
// Define on each iteration to get the same shape.
Object.defineProperty(bound, "length", {value});
for (var j = 0; j < 100; ++j) {
var f = bound.bind();
assertEq(f.length, value);
}
}
}
testBailoutLength();
// Bailout when trying to read "length" from a property with a lazy script.
function testBailoutLazyFunction() {
for (var i = 0; i < 200; ++i) {
var values = [function(){}, function(a){}];
var index = 0 + (i >= 100);
assertEq(values[index].length, index);
}
}
testBailoutLazyFunction();
// Bailout when trying to read "length" from a property with a lazy self-hosted script.
function testBailoutLazySelfHostedFunction() {
for (var i = 0; i < 200; ++i) {
var values = [function(){}, Array.prototype.map];
var index = 0 + (i >= 100);
assertEq(values[index].length, index);
}
}
testBailoutLazySelfHostedFunction();