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