241 lines
7.0 KiB
JavaScript
241 lines
7.0 KiB
JavaScript
//@ skip if not $jitTests
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//@ runNoCJITValidatePhases
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//@ runFTLNoCJITValidate
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"use strict";
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let logOfFour = Math.log(4);
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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", "-Infinity"],
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["0", "-Infinity"],
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["-0.", "-Infinity"],
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["1.", "0"],
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["4", "" + logOfFour],
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["Math.E", "1"],
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["Infinity", "Infinity"],
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["-Infinity", "NaN"],
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["NaN", "NaN"],
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["\"WebKit\"", "NaN"],
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["\"4\"", "" + logOfFour],
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["{ valueOf: () => { return Math.E; } }", "1"],
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["{ valueOf: () => { return 1; } }", "0"],
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["{ valueOf: () => { return 4; } }", "" + logOfFour],
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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.log() without arguments.
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function opaqueLogNoArgument() {
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return Math.log();
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}
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noInline(opaqueLogNoArgument);
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noOSRExitFuzzing(opaqueLogNoArgument);
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function testNoArgument() {
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for (let i = 0; i < 1e4; ++i) {
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let output = opaqueLogNoArgument();
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if (output === output) {
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throw "Failed opaqueLogNoArgument";
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}
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}
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if (numberOfDFGCompiles(opaqueLogNoArgument) > 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.log() with a very polymorphic input. All test cases are seen at each iteration.
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function opaqueAllTypesLog(argument) {
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return Math.log(argument);
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}
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noInline(opaqueAllTypesLog);
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noOSRExitFuzzing(opaqueAllTypesLog);
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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 = opaqueAllTypesLog(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(opaqueAllTypesLog) > 2)
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throw "We should have detected log() was polymorphic and generated a generic version.";
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}
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testAllTypesCall();
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// Test Math.log() 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 opaqueLog(argument) {
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return Math.log(argument);
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}
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noInline(opaqueLog);
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noOSRExitFuzzing(opaqueLog);
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for (let i = 0; i < 1e4; ++i) {
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if (!isIdentical(opaqueLog(${testCaseInput[0]}), ${testCaseInput[1]})) {
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throw "Failed testSingleTypeCall()";
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}
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}
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if (numberOfDFGCompiles(opaqueLog) > 1)
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throw "We should have compiled a single log for the expected type.";
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`);
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}
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}
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testSingleTypeCall();
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// Test Math.log() on constants
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function testConstant() {
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for (let testCaseInput of validInputTestCases) {
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eval(`
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function opaqueLogOnConstant() {
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return Math.log(${testCaseInput[0]});
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}
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noInline(opaqueLogOnConstant);
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noOSRExitFuzzing(opaqueLogOnConstant);
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for (let i = 0; i < 1e4; ++i) {
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if (!isIdentical(opaqueLogOnConstant(), ${testCaseInput[1]})) {
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throw "Failed testConstant()";
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}
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}
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if (numberOfDFGCompiles(opaqueLogOnConstant) > 1)
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throw "We should have compiled a single log 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 opaqueLogForSideEffects(argument) {
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return Math.log(argument);
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}
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noInline(opaqueLogForSideEffects);
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noOSRExitFuzzing(opaqueLogForSideEffects);
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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 log16 = Math.log(16);
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for (let i = 0; i < 1e4; ++i) {
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if (opaqueLogForSideEffects(testObject) !== log16)
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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(opaqueLogForSideEffects) > 1)
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throw "opaqueLogForSideEffects() is predictable, it should only be compiled once.";
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}
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testSideEffect();
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// Verify log() is not subject to CSE if the argument has side effects.
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function opaqueLogForCSE(argument) {
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return Math.log(argument) + Math.log(argument) + Math.log(argument);
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}
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noInline(opaqueLogForCSE);
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noOSRExitFuzzing(opaqueLogForCSE);
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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 log16 = Math.log(16);
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let threeLog16 = log16 + log16 + log16;
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for (let i = 0; i < 1e4; ++i) {
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if (opaqueLogForCSE(testObject) !== threeLog16)
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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(opaqueLogForCSE) > 1)
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throw "opaqueLogForCSE() is predictable, it should only be compiled once.";
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}
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testCSE();
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// Verify log() is not subject to DCE if the argument has side effects.
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function opaqueLogForDCE(argument) {
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Math.log(argument);
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}
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noInline(opaqueLogForDCE);
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noOSRExitFuzzing(opaqueLogForDCE);
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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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opaqueLogForDCE(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(opaqueLogForDCE) > 1)
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throw "opaqueLogForDCE() 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 opaqueLogWithException(argument) {
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let result = Math.log(argument);
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++counter;
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return result;
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}
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noInline(opaqueLogWithException);
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let testObject = { valueOf: () => { return 64; } };
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let log64 = Math.log(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 (opaqueLogWithException(testObject) !== log64)
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throw "Incorrect result in opaqueLogWithException()";
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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 (opaqueLogWithException(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 opaqueLogWithException."
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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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