235 lines
6.9 KiB
JavaScript
235 lines
6.9 KiB
JavaScript
//@ skip if not $jitTests
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//@ defaultNoEagerRun
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"use strict";
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let validInputTestCases = [
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// input as string, expected result as string.
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["undefined", "32"],
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["null", "32"],
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["0", "32"],
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["-0.", "32"],
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["4", "29"],
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["Math.PI", "30"],
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["Infinity", "32"],
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["-Infinity", "32"],
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["NaN", "32"],
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["\"WebKit\"", "32"],
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["\"4\"", "29"],
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["{ valueOf: () => { return 4; } }", "29"],
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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.clz32() without arguments.
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function opaqueClz32NoArgument() {
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return Math.clz32();
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}
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noInline(opaqueClz32NoArgument);
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noOSRExitFuzzing(opaqueClz32NoArgument);
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function testNoArgument() {
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for (let i = 0; i < 1e4; ++i) {
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let output = opaqueClz32NoArgument();
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if (output !== 32) {
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throw "Failed opaqueClz32NoArgument";
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}
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}
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if (numberOfDFGCompiles(opaqueClz32NoArgument) > 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.clz32() with a very polymorphic input. All test cases are seen at each iteration.
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function opaqueAllTypesClz32(argument) {
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return Math.clz32(argument);
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}
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noInline(opaqueAllTypesClz32);
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noOSRExitFuzzing(opaqueAllTypesClz32);
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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 = opaqueAllTypesClz32(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(opaqueAllTypesClz32) > 2)
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throw "We should have detected clz32() was polymorphic and generated a generic version.";
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}
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testAllTypesCall();
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// Test Math.clz32() 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 opaqueClz32(argument) {
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return Math.clz32(argument);
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}
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noInline(opaqueClz32);
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noOSRExitFuzzing(opaqueClz32);
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for (let i = 0; i < 1e4; ++i) {
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if (!isIdentical(opaqueClz32(${testCaseInput[0]}), ${testCaseInput[1]})) {
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throw "Failed testSingleTypeCall()";
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}
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}
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if (numberOfDFGCompiles(opaqueClz32) > 1)
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throw "We should have compiled a single clz32 for the expected type.";
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`);
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}
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}
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testSingleTypeCall();
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// Test Math.clz32() on constants
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function testConstant() {
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for (let testCaseInput of validInputTestCases) {
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eval(`
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function opaqueClz32OnConstant() {
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return Math.clz32(${testCaseInput[0]});
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}
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noInline(opaqueClz32OnConstant);
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noOSRExitFuzzing(opaqueClz32OnConstant);
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for (let i = 0; i < 1e4; ++i) {
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if (!isIdentical(opaqueClz32OnConstant(), ${testCaseInput[1]})) {
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throw "Failed testConstant()";
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}
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}
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if (numberOfDFGCompiles(opaqueClz32OnConstant) > 1)
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throw "We should have compiled a single clz32 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 opaqueClz32ForSideEffects(argument) {
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return Math.clz32(argument);
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}
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noInline(opaqueClz32ForSideEffects);
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noOSRExitFuzzing(opaqueClz32ForSideEffects);
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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 clz3216 = Math.clz32(16);
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for (let i = 0; i < 1e4; ++i) {
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if (opaqueClz32ForSideEffects(testObject) !== clz3216)
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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(opaqueClz32ForSideEffects) > 1)
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throw "opaqueClz32ForSideEffects() is predictable, it should only be compiled once.";
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}
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testSideEffect();
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// Verify clz32() is not subject to CSE if the argument has side effects.
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function opaqueClz32ForCSE(argument) {
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return Math.clz32(argument) + Math.clz32(argument) + Math.clz32(argument);
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}
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noInline(opaqueClz32ForCSE);
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noOSRExitFuzzing(opaqueClz32ForCSE);
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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 clz3216 = Math.clz32(16);
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let threeClz3216 = clz3216 + clz3216 + clz3216;
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for (let i = 0; i < 1e4; ++i) {
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if (opaqueClz32ForCSE(testObject) !== threeClz3216)
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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(opaqueClz32ForCSE) > 1)
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throw "opaqueClz32ForCSE() is predictable, it should only be compiled once.";
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}
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testCSE();
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// Verify clz32() is not subject to DCE if the argument has side effects.
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function opaqueClz32ForDCE(argument) {
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Math.clz32(argument);
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}
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noInline(opaqueClz32ForDCE);
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noOSRExitFuzzing(opaqueClz32ForDCE);
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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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opaqueClz32ForDCE(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(opaqueClz32ForDCE) > 1)
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throw "opaqueClz32ForDCE() 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 opaqueClz32WithException(argument) {
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let result = Math.clz32(argument);
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++counter;
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return result;
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}
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noInline(opaqueClz32WithException);
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let testObject = { valueOf: () => { return 64; } };
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let clz3264 = Math.clz32(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 (opaqueClz32WithException(testObject) !== clz3264)
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throw "Incorrect result in opaqueClz32WithException()";
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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 (opaqueClz32WithException(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 opaqueClz32WithException."
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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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