blob: 73bb1dd9c92f62245983a5d8c468cdb748adad99 [file] [log] [blame]
//@ defaultNoEagerRun
"use strict";
let froundOfPi = Math.fround(Math.PI);
let froundOfE = Math.fround(Math.E);
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "NaN"],
["null", "0"],
["0", "0"],
["-0.", "-0"],
["1.", "1"],
["Math.PI", "" + froundOfPi],
["Math.E", "" + froundOfE],
["Infinity", "Infinity"],
["-Infinity", "-Infinity"],
["NaN", "NaN"],
["\"WebKit\"", "NaN"],
["\"" + Math.PI + "\"", "" + froundOfPi],
["{ valueOf: () => { return Math.E; } }", "" + froundOfE],
["{ valueOf: () => { return 1; } }", "1"],
["{ valueOf: () => { return Math.PI; } }", "" + froundOfPi],
];
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.fround() without arguments.
function opaqueFRoundNoArgument() {
return Math.fround();
}
noInline(opaqueFRoundNoArgument);
noOSRExitFuzzing(opaqueFRoundNoArgument);
function testNoArgument() {
for (let i = 0; i < 1e4; ++i) {
let output = opaqueFRoundNoArgument();
if (output === output) {
throw "Failed opaqueFRoundNoArgument";
}
}
if (numberOfDFGCompiles(opaqueFRoundNoArgument) > 1)
throw "The call without arguments should never exit.";
}
testNoArgument();
// Test Math.fround() with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesFround(argument) {
return Math.fround(argument);
}
noInline(opaqueAllTypesFround);
noOSRExitFuzzing(opaqueAllTypesFround);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesFround(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesFround) > 2)
throw "We should have detected fround() was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Test Math.fround() on a completely typed input. Every call see only one type.
function testSingleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueFround(argument) {
return Math.fround(argument);
}
noInline(opaqueFround);
noOSRExitFuzzing(opaqueFround);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueFround(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testSingleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueFround) > 1)
throw "We should have compiled a single fround for the expected type.";
`);
}
}
testSingleTypeCall();
// Test Math.fround() on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueFroundOnConstant() {
return Math.fround(${testCaseInput[0]});
}
noInline(opaqueFroundOnConstant);
noOSRExitFuzzing(opaqueFroundOnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueFroundOnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueFroundOnConstant) > 1)
throw "We should have compiled a single fround for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueFroundForSideEffects(argument) {
return Math.fround(argument);
}
noInline(opaqueFroundForSideEffects);
noOSRExitFuzzing(opaqueFroundForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let fround16 = Math.fround(16);
for (let i = 0; i < 1e4; ++i) {
if (opaqueFroundForSideEffects(testObject) !== fround16)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueFroundForSideEffects) > 1)
throw "opaqueFroundForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify fround() is not subject to CSE if the argument has side effects.
function opaqueFroundForCSE(argument) {
return Math.fround(argument) + Math.fround(argument) + Math.fround(argument);
}
noInline(opaqueFroundForCSE);
noOSRExitFuzzing(opaqueFroundForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let fround16 = Math.fround(16);
let threeFround16 = fround16 + fround16 + fround16;
for (let i = 0; i < 1e4; ++i) {
if (opaqueFroundForCSE(testObject) !== threeFround16)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueFroundForCSE) > 1)
throw "opaqueFroundForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify fround() is not subject to DCE if the argument has side effects.
function opaqueFroundForDCE(argument) {
Math.fround(argument);
}
noInline(opaqueFroundForDCE);
noOSRExitFuzzing(opaqueFroundForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueFroundForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueFroundForDCE) > 1)
throw "opaqueFroundForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueFroundWithException(argument) {
let result = Math.fround(argument);
++counter;
return result;
}
noInline(opaqueFroundWithException);
let testObject = { valueOf: () => { return 64; } };
let fround64 = Math.fround(64);
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueFroundWithException(testObject) !== fround64)
throw "Incorrect result in opaqueFroundWithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueFroundWithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueFroundWithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();