blob: 7809d72c9d2f3b1709dcf94f5a332e8f3d3f6789 [file] [log] [blame]
//@ skip if not $jitTests
//@ requireOptions("--forceUnlinkedDFG=0")
//@ defaultNoEagerRun
"use strict";
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "NaN"],
["null", "0"],
["0", "0"],
["-0.", "0"],
["1.", "1"],
["42", "42"],
["-42", "42"],
["Math.E", "Math.E"],
["Infinity", "Infinity"],
["-Infinity", "Infinity"],
["NaN", "NaN"],
["-NaN", "NaN"],
["\"WebKit\"", "NaN"],
["\"4\"", "4"],
["\"-4\"", "4"],
["{ valueOf: () => { return Math.E; } }", "Math.E"],
["{ valueOf: () => { return 4; } }", "4"],
["{ valueOf: () => { return -4; } }", "4"],
];
let validInputTypedTestCases = validInputTestCases.map((element) => { return [eval("(" + element[0] + ")"), eval(element[1])] });
function isIdentical(result, expected)
{
if (expected === expected) {
if (result !== expected)
return false;
if (!expected && 1 / expected === -Infinity && 1 / result !== -Infinity)
return false;
return true;
}
return result !== result;
}
// Test Math.abs() without arguments.
function opaqueAbsNoArgument() {
return Math.abs();
}
noInline(opaqueAbsNoArgument);
noOSRExitFuzzing(opaqueAbsNoArgument);
function testNoArgument() {
for (let i = 0; i < 1e4; ++i) {
let output = opaqueAbsNoArgument();
if (output === output) {
throw "Failed opaqueAbsNoArgument";
}
}
if (numberOfDFGCompiles(opaqueAbsNoArgument) > 1)
throw "The call without arguments should never exit.";
}
testNoArgument();
// Test Math.abs() with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesAbs(argument) {
return Math.abs(argument);
}
noInline(opaqueAllTypesAbs);
noOSRExitFuzzing(opaqueAllTypesAbs);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesAbs(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesAbs) > 3)
throw "We should have detected abs() was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Test Math.abs() on a completely typed input. Every call see only one type.
function testSingleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueAbs(argument) {
return Math.abs(argument);
}
noInline(opaqueAbs);
noOSRExitFuzzing(opaqueAbs);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueAbs(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testSingleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueAbs) > 1)
throw "We should have compiled a single abs for the expected type. The argument was " + ${testCaseInput[0]};
`);
}
}
testSingleTypeCall();
// Test Math.abs() on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueAbsOnConstant() {
return Math.abs(${testCaseInput[0]});
}
noInline(opaqueAbsOnConstant);
noOSRExitFuzzing(opaqueAbsOnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueAbsOnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueAbsOnConstant) > 1)
throw "We should have compiled a single abs for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueAbsForSideEffects(argument) {
return Math.abs(argument);
}
noInline(opaqueAbsForSideEffects);
noOSRExitFuzzing(opaqueAbsForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let abs16 = Math.abs(16);
for (let i = 0; i < 1e4; ++i) {
if (opaqueAbsForSideEffects(testObject) !== abs16)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueAbsForSideEffects) > 1)
throw "opaqueAbsForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify abs() is not subject to CSE if the argument has side effects.
function opaqueAbsForCSE(argument) {
return Math.abs(argument) + Math.abs(argument) + Math.abs(argument);
}
noInline(opaqueAbsForCSE);
noOSRExitFuzzing(opaqueAbsForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let abs16 = Math.abs(16);
let threeAbs16 = abs16 + abs16 + abs16;
for (let i = 0; i < 1e4; ++i) {
if (opaqueAbsForCSE(testObject) !== threeAbs16)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueAbsForCSE) > 1)
throw "opaqueAbsForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify abs() is not subject to DCE if the argument has side effects.
function opaqueAbsForDCE(argument) {
Math.abs(argument);
}
noInline(opaqueAbsForDCE);
noOSRExitFuzzing(opaqueAbsForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueAbsForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueAbsForDCE) > 1)
throw "opaqueAbsForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueAbsWithException(argument) {
let result = Math.abs(argument);
++counter;
return result;
}
noInline(opaqueAbsWithException);
let testObject = { valueOf: () => { return 64; } };
let abs64 = Math.abs(64);
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueAbsWithException(testObject) !== abs64)
throw "Incorrect result in opaqueAbsWithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueAbsWithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueAbsWithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();