blob: 73eec2a313d9d5f064fa056ac7f658efd5a349f4 [file] [log] [blame]
//@ skip if not $jitTests
//@ requireOptions("--forceUnlinkedDFG=0")
//@ defaultNoEagerRun
"use strict";
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "32"],
["null", "32"],
["0", "32"],
["-0.", "32"],
["4", "29"],
["Math.PI", "30"],
["Infinity", "32"],
["-Infinity", "32"],
["NaN", "32"],
["\"WebKit\"", "32"],
["\"4\"", "29"],
["{ valueOf: () => { return 4; } }", "29"],
];
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.clz32() without arguments.
function opaqueClz32NoArgument() {
return Math.clz32();
}
noInline(opaqueClz32NoArgument);
noOSRExitFuzzing(opaqueClz32NoArgument);
function testNoArgument() {
for (let i = 0; i < 1e4; ++i) {
let output = opaqueClz32NoArgument();
if (output !== 32) {
throw "Failed opaqueClz32NoArgument";
}
}
if (numberOfDFGCompiles(opaqueClz32NoArgument) > 1)
throw "The call without arguments should never exit.";
}
testNoArgument();
// Test Math.clz32() with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesClz32(argument) {
return Math.clz32(argument);
}
noInline(opaqueAllTypesClz32);
noOSRExitFuzzing(opaqueAllTypesClz32);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesClz32(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesClz32) > 2)
throw "We should have detected clz32() was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Test Math.clz32() on a completely typed input. Every call see only one type.
function testSingleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueClz32(argument) {
return Math.clz32(argument);
}
noInline(opaqueClz32);
noOSRExitFuzzing(opaqueClz32);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueClz32(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testSingleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueClz32) > 1)
throw "We should have compiled a single clz32 for the expected type.";
`);
}
}
testSingleTypeCall();
// Test Math.clz32() on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueClz32OnConstant() {
return Math.clz32(${testCaseInput[0]});
}
noInline(opaqueClz32OnConstant);
noOSRExitFuzzing(opaqueClz32OnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueClz32OnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueClz32OnConstant) > 1)
throw "We should have compiled a single clz32 for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueClz32ForSideEffects(argument) {
return Math.clz32(argument);
}
noInline(opaqueClz32ForSideEffects);
noOSRExitFuzzing(opaqueClz32ForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let clz3216 = Math.clz32(16);
for (let i = 0; i < 1e4; ++i) {
if (opaqueClz32ForSideEffects(testObject) !== clz3216)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueClz32ForSideEffects) > 1)
throw "opaqueClz32ForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify clz32() is not subject to CSE if the argument has side effects.
function opaqueClz32ForCSE(argument) {
return Math.clz32(argument) + Math.clz32(argument) + Math.clz32(argument);
}
noInline(opaqueClz32ForCSE);
noOSRExitFuzzing(opaqueClz32ForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let clz3216 = Math.clz32(16);
let threeClz3216 = clz3216 + clz3216 + clz3216;
for (let i = 0; i < 1e4; ++i) {
if (opaqueClz32ForCSE(testObject) !== threeClz3216)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueClz32ForCSE) > 1)
throw "opaqueClz32ForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify clz32() is not subject to DCE if the argument has side effects.
function opaqueClz32ForDCE(argument) {
Math.clz32(argument);
}
noInline(opaqueClz32ForDCE);
noOSRExitFuzzing(opaqueClz32ForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueClz32ForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueClz32ForDCE) > 1)
throw "opaqueClz32ForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueClz32WithException(argument) {
let result = Math.clz32(argument);
++counter;
return result;
}
noInline(opaqueClz32WithException);
let testObject = { valueOf: () => { return 64; } };
let clz3264 = Math.clz32(64);
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueClz32WithException(testObject) !== clz3264)
throw "Incorrect result in opaqueClz32WithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueClz32WithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueClz32WithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();