blob: 7d3f19209ffed4da701bbf9c60b17997929fa1d3 [file] [log] [blame]
//@ skip if not $jitTests
//@ defaultNoEagerRun
"use strict";
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "NaN"],
["null", "-0"],
["0", "-0"],
["-0.", "0"],
["0.5", "-0.5"],
["-0.5", "0.5"],
["4", "-4"],
["42.1", "-42.1"],
["42.5", "-42.5"],
["42.9", "-42.9"],
["-42.1", "42.1"],
["-42.5", "42.5"],
["-42.9", "42.9"],
["Math.PI", "-Math.PI"],
["Infinity", "-Infinity"],
["-Infinity", "Infinity"],
["NaN", "NaN"],
["\"WebKit\"", "NaN"],
["\"4\"", "-4"],
["\"42.5\"", "-42.5"],
["{ valueOf: () => { return 4; } }", "-4"],
["{ valueOf: () => { return 0; } }", "-0"],
["{ valueOf: () => { return -0; } }", "0"],
["{ valueOf: () => { return 0.5; } }", "-0.5"],
["{ valueOf: () => { return -0.5; } }", "0.5"],
["{ valueOf: () => { return Number.MIN_SAFE_INTEGER; } }", "9007199254740991"],
["{ valueOf: () => { return Number.MAX_SAFE_INTEGER; } }", "-9007199254740991"],
["{ valueOf: () => { return 0x80000000|0; } }", "2147483648"],
["{ valueOf: () => { return 0x7fffffff|0; } }", "-2147483647"],
["{ valueOf: () => { return (0x80000000|0) - 0.5; } }", "2147483648.5"],
["{ valueOf: () => { return (0x7fffffff|0) + 0.5; } }", "-2147483647.5"],
];
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) !== (1 / result))
return false;
return true;
}
return result !== result;
}
// Test negate with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesNegate(argument) {
return -(argument);
}
noInline(opaqueAllTypesNegate);
noOSRExitFuzzing(opaqueAllTypesNegate);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesNegate(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesNegate) > 3)
throw "We should have detected negate was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Polymorphic input but negative zero is not observable.
function opaqueAllTypesNegateWithoutNegativeZero(argument) {
return -(argument) + 0;
}
noInline(opaqueAllTypesNegateWithoutNegativeZero);
noOSRExitFuzzing(opaqueAllTypesNegateWithoutNegativeZero);
function testAllTypesWithoutNegativeZeroCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesNegateWithoutNegativeZero(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1] + 0))
throw "Failed testAllTypesWithoutNegativeZeroCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesNegate) > 3)
throw "We should have detected negate was polymorphic and generated a generic version.";
}
testAllTypesWithoutNegativeZeroCall();
// Test negate on a completely typed input. Every call see only one type.
function testSingleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueNegate(argument) {
return -(argument);
}
noInline(opaqueNegate);
noOSRExitFuzzing(opaqueNegate);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueNegate(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testSingleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueNegate) > 1)
throw "Failed testSingleTypeCall(). We should have compiled a single negate for the expected type.";
`);
}
}
testSingleTypeCall();
function checkCompileCountForUselessNegativeZero(testFunction)
{
if (jscOptions().useMaximalFlushInsertionPhase) {
// If we forced a flush after the operation, the negative zero becomes
// observable and we may be overly optimistic.
return numberOfDFGCompiles(testFunction) <= 2;
}
return numberOfDFGCompiles(testFunction) <= 1;
}
// Test negate on a completely typed input, but without negative zero.
function testSingleTypeWithoutNegativeZeroCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueNegate(argument) {
return -(argument) + 0;
}
noInline(opaqueNegate);
noOSRExitFuzzing(opaqueNegate);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueNegate(${testCaseInput[0]}), ${testCaseInput[1]} + 0)) {
throw "Failed testSingleTypeWithoutNegativeZeroCall()";
}
}
if (!checkCompileCountForUselessNegativeZero(opaqueNegate))
throw "Failed testSingleTypeWithoutNegativeZeroCall(). We should have compiled a single negate for the expected type.";
`);
}
}
testSingleTypeWithoutNegativeZeroCall();
// Test negate on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueNegateOnConstant() {
return -(${testCaseInput[0]});
}
noInline(opaqueNegateOnConstant);
noOSRExitFuzzing(opaqueNegateOnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueNegateOnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueNegateOnConstant) > 1)
throw "Failed testConstant(). We should have compiled a single negate for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueNegateForSideEffects(argument) {
return -(argument);
}
noInline(opaqueNegateForSideEffects);
noOSRExitFuzzing(opaqueNegateForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
if (opaqueNegateForSideEffects(testObject) !== -16)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueNegateForSideEffects) > 1)
throw "opaqueNegateForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify negate is not subject to CSE if the argument has side effects.
function opaqueNegateForCSE(argument) {
return -(argument) + -(argument) + -(argument);
}
noInline(opaqueNegateForCSE);
noOSRExitFuzzing(opaqueNegateForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
if (opaqueNegateForCSE(testObject) !== -48)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueNegateForCSE) > 1)
throw "opaqueNegateForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify negate is not subject to DCE if the argument has side effects.
function opaqueNegateForDCE(argument) {
-(argument);
}
noInline(opaqueNegateForDCE);
noOSRExitFuzzing(opaqueNegateForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueNegateForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueNegateForDCE) > 1)
throw "opaqueNegateForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueNegateWithException(argument) {
let result = -(argument);
++counter;
return result;
}
noInline(opaqueNegateWithException);
let testObject = { valueOf: () => { return 64; } };
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueNegateWithException(testObject) !== -64)
throw "Incorrect result in opaqueNegateWithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueNegateWithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueNegateWithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();