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ant/examples/jit/generate_jit.js
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generate_jit.js
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let pass = 0,
fail = 0;
function check(name, got, expected) {
if (got === expected) {
pass++;
console.log('PASS', name, 'got:', got, 'expected:', expected);
} else {
fail++;
console.log('FAIL', name, 'got:', got, 'expected:', expected);
}
}
function warm(fn) {
for (let i = 0; i < 110; i++) fn();
}
function warm1(fn) {
for (let i = 0; i < 110; i++) fn(i);
}
function warm2(fn) {
for (let i = 0; i < 110; i++) fn(i, i + 1);
}
function testConstI8() {
return 7;
}
warm(testConstI8);
check('CONST_I8', testConstI8(), 7);
function testConst() {
return 123456789;
}
warm(testConst);
check('CONST', testConst(), 123456789);
function testConst8() {
return 3.14;
}
warm(testConst8);
check('CONST8', testConst8(), 3.14);
function testUndef() {
return undefined;
}
warm(testUndef);
check('UNDEF', testUndef(), undefined);
function testNull() {
return null;
}
warm(testNull);
check('NULL', testNull(), null);
function testTrue() {
return true;
}
function testFalse() {
return false;
}
warm(testTrue);
warm(testFalse);
check('TRUE', testTrue(), true);
check('FALSE', testFalse(), false);
function testThis() {
return this;
}
warm(testThis);
check('THIS', testThis() === undefined || typeof testThis() === 'object', true);
function testPop() {
let x = 1;
2;
return x;
}
warm(testPop);
check('POP', testPop(), 1);
function testDup() {
let x;
return (x = 42);
}
warm(testDup);
check('DUP', testDup(), 42);
function testDup2() {
let a = 1,
b = 2;
return a + b + a + b;
}
warm(testDup2);
check('DUP2', testDup2(), 6);
function testSwap(a, b) {
return [b, a];
}
warm2(testSwap);
let sw = testSwap(1, 2);
check('SWAP', sw[0] === 2 && sw[1] === 1, true);
function testRot3l() {
let o = {};
o.x = 5;
return o.x;
}
warm(testRot3l);
check('ROT3L', testRot3l(), 5);
function testInsert2() {
let o = { x: 10 };
o.x += 5;
return o.x;
}
warm(testInsert2);
check('INSERT2', testInsert2(), 15);
function testInsert3() {
let o = { x: 10 };
let k = 'x';
o[k] += 3;
return o[k];
}
warm(testInsert3);
check('INSERT3', testInsert3(), 13);
function testGetArg(a, b, c) {
return a + b + c;
}
warm(function () {
testGetArg(1, 2, 3);
});
check('GET_ARG', testGetArg(10, 20, 30), 60);
function testSetArg(a) {
a = 99;
return a;
}
warm1(testSetArg);
check('SET_ARG', testSetArg(0), 99);
function testLocals() {
let x = 10;
let y = x + 5;
x = y * 2;
return x;
}
warm(testLocals);
check('GET/PUT/SET_LOCAL', testLocals(), 30);
function testLocal8() {
let a = 1;
return a;
}
warm(testLocal8);
check('LOCAL8', testLocal8(), 1);
function testSetLocalUndef() {
let x = 42;
return x;
}
warm(testSetLocalUndef);
check('SET_LOCAL_UNDEF', testSetLocalUndef(), 42);
function testIncLocal() {
let x = 0;
x++;
x++;
x++;
return x;
}
warm(testIncLocal);
check('INC_LOCAL', testIncLocal(), 3);
function testDecLocal() {
let x = 10;
x--;
x--;
return x;
}
warm(testDecLocal);
check('DEC_LOCAL', testDecLocal(), 8);
function testAddLocal() {
let x = 0;
x += 10;
x += 32;
return x;
}
warm(testAddLocal);
check('ADD_LOCAL', testAddLocal(), 42);
function testGetUpval() {
let v = 77;
function inner() {
return v;
}
return inner();
}
warm(testGetUpval);
check('GET_UPVAL', testGetUpval(), 77);
function testPutUpval() {
let v = 0;
function inc() {
v = v + 1;
}
inc();
inc();
return v;
}
warm(testPutUpval);
check('PUT_UPVAL', testPutUpval(), 2);
function testSetUpval() {
let v = 0;
function set() {
return (v = 42);
}
return set();
}
warm(testSetUpval);
check('SET_UPVAL', testSetUpval(), 42);
function testClosure() {
function inner(x) {
return x + 1;
}
return inner(41);
}
warm(testClosure);
check('CLOSURE', testClosure(), 42);
function testCloseUpval() {
let fns = [];
for (let i = 0; i < 3; i++) {
fns.push(function () {
return i;
});
}
return fns[0]() + fns[1]() + fns[2]();
}
check('CLOSE_UPVAL', testCloseUpval(), 3);
function testSetName() {
let fn = function myName() {
return 1;
};
return fn.name;
}
warm(testSetName);
check('SET_NAME', testSetName(), 'myName');
function testGetGlobal() {
return Math;
}
warm(testGetGlobal);
check('GET_GLOBAL', typeof testGetGlobal(), 'object');
function testGetGlobalUndef() {
return typeof nonExistentVar123;
}
warm(testGetGlobalUndef);
check('GET_GLOBAL_UNDEF', testGetGlobalUndef(), 'undefined');
var gval = 0;
function testPutGlobal() {
gval = 42;
return gval;
}
warm(testPutGlobal);
check('PUT_GLOBAL', testPutGlobal(), 42);
function testAdd(a, b) {
return a + b;
}
warm2(testAdd);
check('ADD', testAdd(20, 22), 42);
check('ADD str', testAdd('a', 'b'), 'ab');
function testSub(a, b) {
return a - b;
}
warm2(testSub);
check('SUB', testSub(50, 8), 42);
function testMul(a, b) {
return a * b;
}
warm2(testMul);
check('MUL', testMul(6, 7), 42);
function testDiv(a, b) {
return a / b;
}
warm2(testDiv);
check('DIV', testDiv(84, 2), 42);
function testMod(a, b) {
return a % b;
}
warm2(testMod);
check('MOD', testMod(47, 5), 2);
function testNeg(a) {
return -a;
}
warm1(testNeg);
check('NEG', testNeg(42), -42);
check('NEG zero', testNeg(0), -0);
function testLt(a, b) {
return a < b;
}
warm2(testLt);
check('LT true', testLt(1, 2), true);
check('LT false', testLt(2, 1), false);
check('LT eq', testLt(1, 1), false);
function testLe(a, b) {
return a <= b;
}
warm2(testLe);
check('LE true', testLe(1, 1), true);
check('LE false', testLe(2, 1), false);
function testGt(a, b) {
return a > b;
}
warm2(testGt);
check('GT true', testGt(2, 1), true);
check('GT false', testGt(1, 2), false);
function testGe(a, b) {
return a >= b;
}
warm2(testGe);
check('GE true', testGe(1, 1), true);
check('GE false', testGe(0, 1), false);
function testEq(a, b) {
return a == b;
}
warm2(testEq);
check('EQ', testEq(1, 1), true);
check('EQ coerce', testEq(1, '1'), true);
check('EQ null/undef', testEq(null, undefined), true);
function testNe(a, b) {
return a != b;
}
warm2(testNe);
check('NE', testNe(1, 2), true);
check('NE false', testNe(1, 1), false);
function testSeq(a, b) {
return a === b;
}
warm2(testSeq);
check('SEQ true', testSeq(42, 42), true);
check('SEQ false', testSeq(1, '1'), false);
function testSne(a, b) {
return a !== b;
}
warm2(testSne);
check('SNE true', testSne(1, '1'), true);
check('SNE false', testSne(1, 1), false);
function testIsUndef(v) {
return v === undefined;
}
warm1(testIsUndef);
check('IS_UNDEF true', testIsUndef(undefined), true);
check('IS_UNDEF false', testIsUndef(0), false);
function testIsNull(v) {
return v === null;
}
warm1(testIsNull);
check('IS_NULL true', testIsNull(null), true);
check('IS_NULL false', testIsNull(0), false);
function Ctor() {}
function testInstanceof(v) {
return v instanceof Ctor;
}
warm(function () {
testInstanceof(new Ctor());
});
check('INSTANCEOF true', testInstanceof(new Ctor()), true);
check('INSTANCEOF false', testInstanceof({}), false);
function testIn(k, o) {
return k in o;
}
warm(function () {
testIn('x', { x: 1 });
});
check('IN true', testIn('x', { x: 1 }), true);
check('IN false', testIn('y', { x: 1 }), false);
function testBand(a, b) {
return a & b;
}
warm2(testBand);
check('BAND', testBand(0xff, 0x0f), 15);
function testBor(a, b) {
return a | b;
}
warm2(testBor);
check('BOR', testBor(0x0f, 0xf0), 255);
function testBxor(a, b) {
return a ^ b;
}
warm2(testBxor);
check('BXOR', testBxor(0xff, 0x0f), 240);
function testBnot(a) {
return ~a;
}
warm1(testBnot);
check('BNOT 0', testBnot(0), -1);
check('BNOT -1', testBnot(-1), 0);
function testShl(a, b) {
return a << b;
}
warm2(testShl);
check('SHL', testShl(1, 4), 16);
function testShr(a, b) {
return a >> b;
}
warm2(testShr);
check('SHR', testShr(-16, 2), -4);
function testUshr(a, b) {
return a >>> b;
}
warm2(testUshr);
check('USHR', testUshr(-1, 28), 15);
function testNot(a) {
return !a;
}
warm1(testNot);
check('NOT 0', testNot(0), true);
check('NOT 1', testNot(1), false);
check('NOT null', testNot(null), true);
check('NOT str', testNot('hi'), false);
function testTypeof(a) {
return typeof a;
}
warm1(testTypeof);
check('TYPEOF num', testTypeof(1), 'number');
check('TYPEOF str', testTypeof('x'), 'string');
check('TYPEOF bool', testTypeof(true), 'boolean');
check('TYPEOF undef', testTypeof(undefined), 'undefined');
check('TYPEOF obj', testTypeof({}), 'object');
check(
'TYPEOF fn',
testTypeof(function () {}),
'function'
);
function testVoid(a) {
return void a;
}
warm1(testVoid);
check('VOID', testVoid(42), undefined);
function testDelete() {
let o = { x: 1, y: 2 };
delete o.x;
return o.x;
}
warm(testDelete);
check('DELETE', testDelete(), undefined);
function testJmp(x) {
if (x) return 1;
else return 2;
}
warm1(testJmp);
check('JMP true', testJmp(true), 1);
check('JMP false', testJmp(false), 2);
function testJmpFalse(x) {
if (x) {
return 'yes';
}
return 'no';
}
warm1(testJmpFalse);
check('JMP_FALSE', testJmpFalse(false), 'no');
check('JMP_TRUE', testJmpFalse(true), 'yes');
function testJmp8(x) {
return x ? 1 : 0;
}
warm1(testJmp8);
check('JMP8', testJmp8(true), 1);
function testLoop(n) {
let s = 0;
for (let i = 0; i < n; i++) s += i;
return s;
}
warm1(testLoop);
check('LOOP', testLoop(10), 45);
function helper(x) {
return x * 2;
}
function testCall(x) {
return helper(x);
}
warm1(testCall);
check('CALL', testCall(21), 42);
function testCallMethod() {
let o = {
f(x) {
return x + 1;
}
};
return o.f(41);
}
warm(testCallMethod);
check('CALL_METHOD', testCallMethod(), 42);
function tailHelper(n, acc) {
if (n <= 0) return acc;
return tailHelper(n - 1, acc + n);
}
function testTailCall(n) {
return tailHelper(n, 0);
}
warm(function () {
testTailCall(10);
});
check('TAIL_CALL', testTailCall(100), 5050);
function testTailCallMethod() {
let o = {
count(n, acc) {
if (n <= 0) return acc;
return this.count(n - 1, acc + n);
}
};
return o.count(10, 0);
}
warm(testTailCallMethod);
check('TAIL_CALL_METHOD', testTailCallMethod(), 55);
function Point(x, y) {
this.x = x;
this.y = y;
}
function testNew() {
let p = new Point(3, 4);
return p.x + p.y;
}
warm(testNew);
check('NEW', testNew(), 7);
function testReturn() {
return 42;
}
warm(testReturn);
check('RETURN', testReturn(), 42);
function testReturnUndef() {
let x = 1;
}
warm(testReturnUndef);
check('RETURN_UNDEF', testReturnUndef(), undefined);
function testField() {
let o = {};
o.x = 42;
return o.x;
}
warm(testField);
check('GET/PUT_FIELD', testField(), 42);
function testGetField2() {
let o = {
m() {
return 42;
}
};
return o.m();
}
warm(testGetField2);
check('GET_FIELD2', testGetField2(), 42);
function testElem() {
let a = [0];
a[0] = 42;
return a[0];
}
warm(testElem);
check('GET/PUT_ELEM', testElem(), 42);
function testGetElem2() {
let o = {
f() {
return 42;
}
};
return o['f']();
}
warm(testGetElem2);
check('GET_ELEM2', testGetElem2(), 42);
function testDefineField() {
let o = { x: 42 };
return o.x;
}
warm(testDefineField);
check('DEFINE_FIELD', testDefineField(), 42);
function testGetLength() {
return [1, 2, 3].length;
}
warm(testGetLength);
check('GET_LENGTH', testGetLength(), 3);
function testObject() {
let o = {};
return typeof o;
}
warm(testObject);
check('OBJECT', testObject(), 'object');
function testArray() {
let a = [1, 2, 3];
return a[0] + a[1] + a[2];
}
warm(testArray);
check('ARRAY', testArray(), 6);
function testSetProto() {
let p = { x: 10 };
let c = { __proto__: p, y: 20 };
return c.x + c.y;
}
warm(testSetProto);
check('SET_PROTO', testSetProto(), 30);
function testToPropkey() {
let o = {};
let k = 42;
o[k] = 'v';
return o['42'];
}
warm(testToPropkey);
check('TO_PROPKEY', testToPropkey(), 'v');
function testTryCatch() {
try {
throw 'err';
} catch (e) {
return e;
}
}
warm(testTryCatch);
check('TRY/CATCH', testTryCatch(), 'err');
function testTryNoThrow() {
try {
return 42;
} catch (e) {
return -1;
}
}
warm(testTryNoThrow);
check('TRY no throw', testTryNoThrow(), 42);
function testThrowError() {
try {
let x = null;
x.foo;
return 'miss';
} catch (e) {
return 'caught';
}
}
warm(testThrowError);
check('THROW_ERROR', testThrowError(), 'caught');
function testNestedTry() {
try {
try {
throw 'inner';
} catch (e) {
return 'got: ' + e;
}
} catch (e) {
return 'outer';
}
}
warm(testNestedTry);
check('NESTED TRY', testNestedTry(), 'got: inner');
function testRethrow() {
try {
try {
throw 'a';
} catch (e) {
throw 'b' + e;
}
} catch (e) {
return e;
}
}
warm(testRethrow);
check('RETHROW', testRethrow(), 'ba');
function tfbNumAdd(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) tfbNumAdd(i, i);
check('TFB num_only ADD', tfbNumAdd(20, 22), 42);
function tfbBailout(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) tfbBailout(i, i);
check('TFB bailout', tfbBailout('x', 'y'), 'xy');
check('TFB post-bailout', tfbBailout(1, 2), 3);
function tfbStrAdd(a, b) {
return a + b;
}
for (let i = 0; i < 200; i++) tfbStrAdd('a', 'b');
check('TFB never_num ADD', tfbStrAdd('hello', ' world'), 'hello world');
function tfbStrLt(a, b) {
return a < b;
}
for (let i = 0; i < 200; i++) tfbStrLt('a', 'b');
check('TFB never_num LT', tfbStrLt('a', 'b'), true);
check('TFB never_num LT 2', tfbStrLt('b', 'a'), false);
function tfbMixed(a, b) {
return a + b;
}
for (let i = 0; i < 100; i++) tfbMixed(i, i);
for (let i = 0; i < 100; i++) tfbMixed('a', 'b');
check('TFB mixed num', tfbMixed(1, 2), 3);
check('TFB mixed str', tfbMixed('x', 'y'), 'xy');
function tfbLoop(n) {
let s = 0;
for (let i = 0; i < n; i++) s = s + i;
return s;
}
for (let i = 0; i < 200; i++) tfbLoop(10);
check('TFB loop', tfbLoop(1000), 499500);
function tfbCmpLoop(n) {
let c = 0;
for (let i = 0; i < n; i++) {
if (i > 50) c++;
}
return c;
}
for (let i = 0; i < 200; i++) tfbCmpLoop(100);
check('TFB cmp loop', tfbCmpLoop(100), 49);
function testSpecialObj() {
return new.target;
}
warm(testSpecialObj);
check('SPECIAL_OBJ', testSpecialObj(), undefined);
console.log('passed:', pass, 'failed:', fail, 'total:', pass + fail);
console.log('all tests passed:', fail === 0);

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