// Test transpiling of LoadArgumentsObjectArgResult and cover all possible bailout conditions. function blackhole() { // Direct eval prevents any compile-time optimisations. eval(""); } function testConstantArgAccess() { blackhole(arguments); // Create an arguments object. for (var i = 0; i < 50; ++i) { assertEq(arguments[0], 1); } } for (var i = 0; i < 20; ++i) testConstantArgAccess(1); function testDynamicArgAccess() { blackhole(arguments); // Create an arguments object. for (var i = 0; i < 50; ++i) { assertEq(arguments[i & 1], 1 + (i & 1)); } } for (var i = 0; i < 20; ++i) testDynamicArgAccess(1, 2); function markElementOveriddenIf(args, cond, value) { with ({}) ; // Don't Warp compile to avoid cold code bailouts. if (cond) { Object.defineProperty(args, 0, {value}); } } function testBailoutElementReified() { blackhole(arguments); // Create an arguments object. for (var i = 0; i < 50; ++i) { markElementOveriddenIf(arguments, i === 25, 2); var expected = 1 + (i >= 25); assertEq(arguments[0], expected); } } for (var i = 0; i < 20; ++i) testBailoutElementReified(1); function markLengthOveriddenIf(args, cond, value) { with ({}) ; // Don't Warp compile to avoid cold code bailouts. if (cond) { args.length = value; } } function testBailoutLengthReified() { blackhole(arguments); // Create an arguments object. for (var i = 0; i < 50; ++i) { markLengthOveriddenIf(arguments, i === 25, 0); assertEq(arguments[0], 1); } } for (var i = 0; i < 20; ++i) testBailoutLengthReified(1); function deleteElementIf(args, cond) { with ({}) ; // Don't Warp compile to avoid cold code bailouts. if (cond) { delete args[0]; } } function testBailoutElementDeleted() { blackhole(arguments); // Create an arguments object. // Load expected values from an array to avoid possible cold code bailouts. var values = [1, undefined]; for (var i = 0; i < 50; ++i) { deleteElementIf(arguments, i === 25); var expected = values[0 + (i >= 25)]; assertEq(arguments[0], expected); } } for (var i = 0; i < 20; ++i) testBailoutElementDeleted(1); function testBailoutOutOfBounds() { blackhole(arguments); // Create an arguments object. // Load expected values from an array to avoid possible cold code bailouts. var values = [1, undefined]; for (var i = 0; i < 50; ++i) { var index = 0 + (i >= 25); var expected = values[index]; assertEq(arguments[index], expected); } } for (var i = 0; i < 20; ++i) testBailoutOutOfBounds(1); function testBailoutArgForwarded(arg1, arg2) { blackhole(arguments); // Create an arguments object. blackhole(() => arg2); // Ensure |arg2| is marked as "forwarded". for (var i = 0; i < 50; ++i) { var index = 0 + (i >= 25); var expected = 1 + (i >= 25); assertEq(arguments[index], expected); } } for (var i = 0; i < 20; ++i) testBailoutArgForwarded(1, 2);