blob: f3bcf6f0e244973d553a1bb76ebdfafeb34630c2 [file] [log] [blame]
//@ skip if not $jitTests
//@ requireOptions("--forceUnlinkedDFG=0")
//@ runNoCJITValidatePhases
//@ runFTLNoCJITValidate
"use strict";
let logOfFour = Math.log(4);
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "NaN"],
["null", "-Infinity"],
["0", "-Infinity"],
["-0.", "-Infinity"],
["1.", "0"],
["4", "" + logOfFour],
["Math.E", "1"],
["Infinity", "Infinity"],
["-Infinity", "NaN"],
["NaN", "NaN"],
["\"WebKit\"", "NaN"],
["\"4\"", "" + logOfFour],
["{ valueOf: () => { return Math.E; } }", "1"],
["{ valueOf: () => { return 1; } }", "0"],
["{ valueOf: () => { return 4; } }", "" + logOfFour],
];
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.log() without arguments.
function opaqueLogNoArgument() {
return Math.log();
}
noInline(opaqueLogNoArgument);
noOSRExitFuzzing(opaqueLogNoArgument);
function testNoArgument() {
for (let i = 0; i < 1e4; ++i) {
let output = opaqueLogNoArgument();
if (output === output) {
throw "Failed opaqueLogNoArgument";
}
}
if (numberOfDFGCompiles(opaqueLogNoArgument) > 1)
throw "The call without arguments should never exit.";
}
testNoArgument();
// Test Math.log() with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesLog(argument) {
return Math.log(argument);
}
noInline(opaqueAllTypesLog);
noOSRExitFuzzing(opaqueAllTypesLog);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesLog(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesLog) > 2)
throw "We should have detected log() was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Test Math.log() on a completely typed input. Every call see only one type.
function testSingleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueLog(argument) {
return Math.log(argument);
}
noInline(opaqueLog);
noOSRExitFuzzing(opaqueLog);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueLog(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testSingleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueLog) > 1)
throw "We should have compiled a single log for the expected type.";
`);
}
}
testSingleTypeCall();
// Test Math.log() on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueLogOnConstant() {
return Math.log(${testCaseInput[0]});
}
noInline(opaqueLogOnConstant);
noOSRExitFuzzing(opaqueLogOnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueLogOnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueLogOnConstant) > 1)
throw "We should have compiled a single log for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueLogForSideEffects(argument) {
return Math.log(argument);
}
noInline(opaqueLogForSideEffects);
noOSRExitFuzzing(opaqueLogForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let log16 = Math.log(16);
for (let i = 0; i < 1e4; ++i) {
if (opaqueLogForSideEffects(testObject) !== log16)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueLogForSideEffects) > 1)
throw "opaqueLogForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify log() is not subject to CSE if the argument has side effects.
function opaqueLogForCSE(argument) {
return Math.log(argument) + Math.log(argument) + Math.log(argument);
}
noInline(opaqueLogForCSE);
noOSRExitFuzzing(opaqueLogForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let log16 = Math.log(16);
let threeLog16 = log16 + log16 + log16;
for (let i = 0; i < 1e4; ++i) {
if (opaqueLogForCSE(testObject) !== threeLog16)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueLogForCSE) > 1)
throw "opaqueLogForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify log() is not subject to DCE if the argument has side effects.
function opaqueLogForDCE(argument) {
Math.log(argument);
}
noInline(opaqueLogForDCE);
noOSRExitFuzzing(opaqueLogForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueLogForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueLogForDCE) > 1)
throw "opaqueLogForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueLogWithException(argument) {
let result = Math.log(argument);
++counter;
return result;
}
noInline(opaqueLogWithException);
let testObject = { valueOf: () => { return 64; } };
let log64 = Math.log(64);
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueLogWithException(testObject) !== log64)
throw "Incorrect result in opaqueLogWithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueLogWithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueLogWithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();