1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 const SMI_MAX = (1 << 29) - 1 + (1 << 29); // Create without overflowing.
29 const SMI_MIN = -SMI_MAX - 1; // Create without overflowing.
31 const ONE_HUNDRED = 100;
33 const OBJ_42 = new (function() {
34 this.valueOf = function() { return 42; };
37 assertEquals(42, OBJ_42.valueOf());
48 function Add1Reversed(x) {
52 function Add100Reversed(x) {
57 assertEquals(1, Add1(0)); // fast case
58 assertEquals(1, Add1Reversed(0)); // fast case
59 assertEquals(SMI_MAX + ONE, Add1(SMI_MAX), "smimax + 1");
60 assertEquals(SMI_MAX + ONE, Add1Reversed(SMI_MAX), "1 + smimax");
61 assertEquals(42 + ONE, Add1(OBJ_42)); // non-smi
62 assertEquals(42 + ONE, Add1Reversed(OBJ_42)); // non-smi
64 assertEquals(100, Add100(0)); // fast case
65 assertEquals(100, Add100Reversed(0)); // fast case
66 assertEquals(SMI_MAX + ONE_HUNDRED, Add100(SMI_MAX), "smimax + 100");
67 assertEquals(SMI_MAX + ONE_HUNDRED, Add100Reversed(SMI_MAX), " 100 + smimax");
68 assertEquals(42 + ONE_HUNDRED, Add100(OBJ_42)); // non-smi
69 assertEquals(42 + ONE_HUNDRED, Add100Reversed(OBJ_42)); // non-smi
81 function Sub1Reversed(x) {
85 function Sub100Reversed(x) {
90 assertEquals(0, Sub1(1)); // fast case
91 assertEquals(-1, Sub1Reversed(2)); // fast case
92 assertEquals(SMI_MIN - ONE, Sub1(SMI_MIN)); // overflow
93 assertEquals(ONE - SMI_MIN, Sub1Reversed(SMI_MIN)); // overflow
94 assertEquals(42 - ONE, Sub1(OBJ_42)); // non-smi
95 assertEquals(ONE - 42, Sub1Reversed(OBJ_42)); // non-smi
97 assertEquals(0, Sub100(100)); // fast case
98 assertEquals(1, Sub100Reversed(99)); // fast case
99 assertEquals(SMI_MIN - ONE_HUNDRED, Sub100(SMI_MIN)); // overflow
100 assertEquals(ONE_HUNDRED - SMI_MIN, Sub100Reversed(SMI_MIN)); // overflow
101 assertEquals(42 - ONE_HUNDRED, Sub100(OBJ_42)); // non-smi
102 assertEquals(ONE_HUNDRED - 42, Sub100Reversed(OBJ_42)); // non-smi
113 function Shr1Reversed(x) {
117 function Shr100Reversed(x) {
129 function Sar1Reversed(x) {
133 function Sar100Reversed(x) {
138 assertEquals(0, Shr1(1));
139 assertEquals(0, Sar1(1));
140 assertEquals(0, Shr1Reversed(2));
141 assertEquals(0, Sar1Reversed(2));
142 assertEquals(1610612736, Shr1(SMI_MIN));
143 assertEquals(-536870912, Sar1(SMI_MIN));
144 assertEquals(1, Shr1Reversed(SMI_MIN));
145 assertEquals(1, Sar1Reversed(SMI_MIN));
146 assertEquals(21, Shr1(OBJ_42));
147 assertEquals(21, Sar1(OBJ_42));
148 assertEquals(0, Shr1Reversed(OBJ_42));
149 assertEquals(0, Sar1Reversed(OBJ_42));
151 assertEquals(6, Shr100(100), "100 >>> 100");
152 assertEquals(6, Sar100(100), "100 >> 100");
153 assertEquals(12, Shr100Reversed(99));
154 assertEquals(12, Sar100Reversed(99));
155 assertEquals(201326592, Shr100(SMI_MIN));
156 assertEquals(-67108864, Sar100(SMI_MIN));
157 assertEquals(100, Shr100Reversed(SMI_MIN));
158 assertEquals(100, Sar100Reversed(SMI_MIN));
159 assertEquals(2, Shr100(OBJ_42));
160 assertEquals(2, Sar100(OBJ_42));
161 assertEquals(0, Shr100Reversed(OBJ_42));
162 assertEquals(0, Sar100Reversed(OBJ_42));
173 function Xor1Reversed(x) {
177 function Xor100Reversed(x) {
182 assertEquals(0, Xor1(1));
183 assertEquals(3, Xor1Reversed(2));
184 assertEquals(SMI_MIN + 1, Xor1(SMI_MIN));
185 assertEquals(SMI_MIN + 1, Xor1Reversed(SMI_MIN));
186 assertEquals(43, Xor1(OBJ_42));
187 assertEquals(43, Xor1Reversed(OBJ_42));
189 assertEquals(0, Xor100(100));
190 assertEquals(7, Xor100Reversed(99));
191 assertEquals(-1073741724, Xor100(SMI_MIN));
192 assertEquals(-1073741724, Xor100Reversed(SMI_MIN));
193 assertEquals(78, Xor100(OBJ_42));
194 assertEquals(78, Xor100Reversed(OBJ_42));
196 var x = 0x23; var y = 0x35;
197 assertEquals(0x16, x ^ y);
202 assertEquals(-1, ~v);
204 assertEquals(0x3fffffff, ~v, "~smimin");
206 assertEquals(-0x40000000, ~v, "~smimax");
208 // Overflowing ++ and --.
211 assertEquals(0x40000000, v, "smimax++");
214 assertEquals(-0x40000001, v, "smimin--");
216 // Check that comparisons of numbers separated by MIN_SMI work.
217 assertFalse(SMI_MIN > 0);
218 assertFalse(SMI_MIN + 1 > 1);
219 assertFalse(SMI_MIN + 1 > 2);
220 assertFalse(SMI_MIN + 2 > 1);
221 assertFalse(0 < SMI_MIN);
222 assertTrue(-1 < SMI_MAX);
223 assertFalse(SMI_MAX < -1);
225 // Not actually Smi operations.
226 // Check that relations on unary ops work.
235 assertFalse(v !== v);
237 // Right hand side of unary minus is overwritable.
239 assertEquals(-2.25, -(v * v));
241 // Smi input to bitop gives non-smi result where the rhs is a float that
242 // can be overwritten.
246 assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<1(1)");
248 // Smi input to bitop gives non-smi result where the rhs could be overwritten
249 // if it were a float, but it isn't.
253 assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<2(2)");
256 // Test shift operators on non-smi inputs, giving smi and non-smi results.
257 function testShiftNonSmis() {
258 var pos_non_smi = 2000000000;
259 var neg_non_smi = -pos_non_smi;
260 var pos_smi = 1000000000;
261 var neg_smi = -pos_smi;
264 assertEquals(pos_non_smi, (pos_non_smi) >> 0);
265 assertEquals(pos_non_smi, (pos_non_smi) >>> 0);
266 assertEquals(pos_non_smi, (pos_non_smi) << 0);
267 assertEquals(neg_non_smi, (neg_non_smi) >> 0);
268 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> 0);
269 assertEquals(neg_non_smi, (neg_non_smi) << 0);
270 assertEquals(pos_smi, (pos_smi) >> 0, "possmi >> 0");
271 assertEquals(pos_smi, (pos_smi) >>> 0, "possmi >>>0");
272 assertEquals(pos_smi, (pos_smi) << 0, "possmi << 0");
273 assertEquals(neg_smi, (neg_smi) >> 0, "negsmi >> 0");
274 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> 0, "negsmi >>> 0");
275 assertEquals(neg_smi, (neg_smi) << 0), "negsmi << 0";
277 assertEquals(pos_non_smi / 2, (pos_non_smi) >> 1);
278 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> 1);
279 assertEquals(-0x1194D800, (pos_non_smi) << 1);
280 assertEquals(pos_non_smi / 8, (pos_non_smi) >> 3);
281 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> 3);
282 assertEquals(-0x46536000, (pos_non_smi) << 3);
283 assertEquals(0x73594000, (pos_non_smi) << 4);
284 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> 0);
285 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> 0);
286 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << 0);
287 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> 1);
288 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> 1);
289 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << 1);
290 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> 3);
291 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> 3);
292 assertEquals(-0x46536000, (pos_non_smi + 0.5) << 3);
293 assertEquals(0x73594000, (pos_non_smi + 0.5) << 4);
295 assertEquals(neg_non_smi / 2, (neg_non_smi) >> 1, "negnonsmi >> 1");
297 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> 1,
299 assertEquals(0x1194D800, (neg_non_smi) << 1);
300 assertEquals(neg_non_smi / 8, (neg_non_smi) >> 3);
301 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> 3);
302 assertEquals(0x46536000, (neg_non_smi) << 3);
303 assertEquals(-0x73594000, (neg_non_smi) << 4);
304 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> 0);
305 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> 0,
306 "negnonsmi.5 >>> 0");
307 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << 0);
308 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> 1);
309 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> 1,
310 "negnonsmi.5 >>> 1");
311 assertEquals(0x1194D800, (neg_non_smi - 0.5) << 1);
312 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> 3);
313 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5) >>> 3);
314 assertEquals(0x46536000, (neg_non_smi - 0.5) << 3);
315 assertEquals(-0x73594000, (neg_non_smi - 0.5) << 4);
317 assertEquals(pos_smi / 2, (pos_smi) >> 1);
318 assertEquals(pos_smi / 2, (pos_smi) >>> 1);
319 assertEquals(pos_non_smi, (pos_smi) << 1);
320 assertEquals(pos_smi / 8, (pos_smi) >> 3);
321 assertEquals(pos_smi / 8, (pos_smi) >>> 3);
322 assertEquals(-0x2329b000, (pos_smi) << 3);
323 assertEquals(0x73594000, (pos_smi) << 5);
324 assertEquals(pos_smi, (pos_smi + 0.5) >> 0, "possmi.5 >> 0");
325 assertEquals(pos_smi, (pos_smi + 0.5) >>> 0, "possmi.5 >>> 0");
326 assertEquals(pos_smi, (pos_smi + 0.5) << 0, "possmi.5 << 0");
327 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> 1);
328 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> 1);
329 assertEquals(pos_non_smi, (pos_smi + 0.5) << 1);
330 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> 3);
331 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> 3);
332 assertEquals(-0x2329b000, (pos_smi + 0.5) << 3);
333 assertEquals(0x73594000, (pos_smi + 0.5) << 5);
335 assertEquals(neg_smi / 2, (neg_smi) >> 1);
336 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> 1);
337 assertEquals(neg_non_smi, (neg_smi) << 1);
338 assertEquals(neg_smi / 8, (neg_smi) >> 3);
339 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> 3);
340 assertEquals(0x46536000, (neg_smi) << 4);
341 assertEquals(-0x73594000, (neg_smi) << 5);
342 assertEquals(neg_smi, (neg_smi - 0.5) >> 0, "negsmi.5 >> 0");
343 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> 0, "negsmi.5 >>> 0");
344 assertEquals(neg_smi, (neg_smi - 0.5) << 0, "negsmi.5 << 0");
345 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> 1);
346 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> 1);
347 assertEquals(neg_non_smi, (neg_smi - 0.5) << 1);
348 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> 3);
349 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> 3);
350 assertEquals(0x46536000, (neg_smi - 0.5) << 4);
351 assertEquals(-0x73594000, (neg_smi - 0.5) << 5);
354 // Repeat block A with 2^32 added to positive numbers and
355 // 2^32 subtracted from negative numbers.
356 // Begin block A repeat 1
357 var two_32 = 0x100000000;
358 var neg_32 = -two_32;
359 assertEquals(pos_non_smi, (two_32 + pos_non_smi) >> 0);
360 assertEquals(pos_non_smi, (two_32 + pos_non_smi) >>> 0);
361 assertEquals(pos_non_smi, (two_32 + pos_non_smi) << 0);
362 assertEquals(neg_non_smi, (neg_32 + neg_non_smi) >> 0);
363 assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi) >>> 0);
364 assertEquals(neg_non_smi, (neg_32 + neg_non_smi) << 0);
365 assertEquals(pos_smi, (two_32 + pos_smi) >> 0, "2^32+possmi >> 0");
366 assertEquals(pos_smi, (two_32 + pos_smi) >>> 0, "2^32+possmi >>> 0");
367 assertEquals(pos_smi, (two_32 + pos_smi) << 0, "2^32+possmi << 0");
368 assertEquals(neg_smi, (neg_32 + neg_smi) >> 0, "2^32+negsmi >> 0");
369 assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi) >>> 0);
370 assertEquals(neg_smi, (neg_32 + neg_smi) << 0, "2^32+negsmi << 0");
372 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >> 1);
373 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >>> 1);
374 assertEquals(-0x1194D800, (two_32 + pos_non_smi) << 1);
375 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >> 3);
376 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >>> 3);
377 assertEquals(-0x46536000, (two_32 + pos_non_smi) << 3);
378 assertEquals(0x73594000, (two_32 + pos_non_smi) << 4);
379 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >> 0);
380 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >>> 0);
381 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) << 0);
382 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >> 1);
383 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >>> 1);
384 assertEquals(-0x1194D800, (two_32 + pos_non_smi + 0.5) << 1);
385 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >> 3);
386 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >>> 3);
387 assertEquals(-0x46536000, (two_32 + pos_non_smi + 0.5) << 3);
388 assertEquals(0x73594000, (two_32 + pos_non_smi + 0.5) << 4);
390 assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi) >> 1);
391 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi) >>> 1);
392 assertEquals(0x1194D800, (neg_32 + neg_non_smi) << 1);
393 assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi) >> 3);
394 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi) >>> 3);
395 assertEquals(0x46536000, (neg_32 + neg_non_smi) << 3);
396 assertEquals(-0x73594000, (neg_32 + neg_non_smi) << 4);
397 assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) >> 0);
398 assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi - 0.5) >>> 0);
399 assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) << 0);
400 assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi - 0.5) >> 1);
401 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi - 0.5)
403 assertEquals(0x1194D800, (neg_32 + neg_non_smi - 0.5) << 1);
404 assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi - 0.5) >> 3);
405 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi - 0.5)
407 assertEquals(0x46536000, (neg_32 + neg_non_smi - 0.5) << 3);
408 assertEquals(-0x73594000, (neg_32 + neg_non_smi - 0.5) << 4);
410 assertEquals(pos_smi / 2, (two_32 + pos_smi) >> 1);
411 assertEquals(pos_smi / 2, (two_32 + pos_smi) >>> 1);
412 assertEquals(pos_non_smi, (two_32 + pos_smi) << 1);
413 assertEquals(pos_smi / 8, (two_32 + pos_smi) >> 3);
414 assertEquals(pos_smi / 8, (two_32 + pos_smi) >>> 3);
415 assertEquals(-0x2329b000, (two_32 + pos_smi) << 3);
416 assertEquals(0x73594000, (two_32 + pos_smi) << 5);
417 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >> 0);
418 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >>> 0);
419 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) << 0);
420 assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >> 1);
421 assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >>> 1);
422 assertEquals(pos_non_smi, (two_32 + pos_smi + 0.5) << 1);
423 assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >> 3);
424 assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >>> 3);
425 assertEquals(-0x2329b000, (two_32 + pos_smi + 0.5) << 3);
426 assertEquals(0x73594000, (two_32 + pos_smi + 0.5) << 5);
428 assertEquals(neg_smi / 2, (neg_32 + neg_smi) >> 1);
429 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi) >>> 1);
430 assertEquals(neg_non_smi, (neg_32 + neg_smi) << 1);
431 assertEquals(neg_smi / 8, (neg_32 + neg_smi) >> 3);
432 assertEquals((neg_smi + 0x100000000) / 8, (neg_32 + neg_smi) >>> 3);
433 assertEquals(0x46536000, (neg_32 + neg_smi) << 4);
434 assertEquals(-0x73594000, (neg_32 + neg_smi) << 5);
435 assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) >> 0, "-2^32+negsmi.5 >> 0");
436 assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi - 0.5) >>> 0);
437 assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) << 0, "-2^32+negsmi.5 << 0");
438 assertEquals(neg_smi / 2, (neg_32 + neg_smi - 0.5) >> 1);
439 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi - 0.5) >>> 1);
440 assertEquals(neg_non_smi, (neg_32 + neg_smi - 0.5) << 1);
441 assertEquals(neg_smi / 8, (neg_32 + neg_smi - 0.5) >> 3);
442 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_32 + neg_smi - 0.5) >>> 3);
443 assertEquals(0x46536000, (neg_32 + neg_smi - 0.5) << 4);
444 assertEquals(-0x73594000, (neg_32 + neg_smi - 0.5) << 5);
445 // End block A repeat 1
446 // Repeat block A with shift amounts in variables intialized with
453 // Begin block A repeat 2
454 assertEquals(pos_non_smi, (pos_non_smi) >> zero);
455 assertEquals(pos_non_smi, (pos_non_smi) >>> zero);
456 assertEquals(pos_non_smi, (pos_non_smi) << zero);
457 assertEquals(neg_non_smi, (neg_non_smi) >> zero);
458 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero);
459 assertEquals(neg_non_smi, (neg_non_smi) << zero);
460 assertEquals(pos_smi, (pos_smi) >> zero);
461 assertEquals(pos_smi, (pos_smi) >>> zero);
462 assertEquals(pos_smi, (pos_smi) << zero);
463 assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero");
464 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero);
465 assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero");
467 assertEquals(pos_non_smi / 2, (pos_non_smi) >> one);
468 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one);
469 assertEquals(-0x1194D800, (pos_non_smi) << one);
470 assertEquals(pos_non_smi / 8, (pos_non_smi) >> three);
471 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three);
472 assertEquals(-0x46536000, (pos_non_smi) << three);
473 assertEquals(0x73594000, (pos_non_smi) << four);
474 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero);
475 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero);
476 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero);
477 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one);
478 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one);
479 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one);
480 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three);
481 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three);
482 assertEquals(-0x46536000, (pos_non_smi + 0.5) << three);
483 assertEquals(0x73594000, (pos_non_smi + 0.5) << four);
485 assertEquals(neg_non_smi / 2, (neg_non_smi) >> one);
486 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one);
487 assertEquals(0x1194D800, (neg_non_smi) << one);
488 assertEquals(neg_non_smi / 8, (neg_non_smi) >> three);
489 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three);
490 assertEquals(0x46536000, (neg_non_smi) << three);
491 assertEquals(-0x73594000, (neg_non_smi) << four);
492 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero);
493 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero);
494 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero);
495 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one);
496 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one);
497 assertEquals(0x1194D800, (neg_non_smi - 0.5) << one);
498 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three);
499 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5)
501 assertEquals(0x46536000, (neg_non_smi - 0.5) << three);
502 assertEquals(-0x73594000, (neg_non_smi - 0.5) << four);
504 assertEquals(pos_smi / 2, (pos_smi) >> one);
505 assertEquals(pos_smi / 2, (pos_smi) >>> one);
506 assertEquals(pos_non_smi, (pos_smi) << one);
507 assertEquals(pos_smi / 8, (pos_smi) >> three);
508 assertEquals(pos_smi / 8, (pos_smi) >>> three);
509 assertEquals(-0x2329b000, (pos_smi) << three);
510 assertEquals(0x73594000, (pos_smi) << five);
511 assertEquals(pos_smi, (pos_smi + 0.5) >> zero);
512 assertEquals(pos_smi, (pos_smi + 0.5) >>> zero);
513 assertEquals(pos_smi, (pos_smi + 0.5) << zero);
514 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one);
515 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one);
516 assertEquals(pos_non_smi, (pos_smi + 0.5) << one);
517 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three);
518 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three);
519 assertEquals(-0x2329b000, (pos_smi + 0.5) << three);
520 assertEquals(0x73594000, (pos_smi + 0.5) << five);
522 assertEquals(neg_smi / 2, (neg_smi) >> one);
523 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one);
524 assertEquals(neg_non_smi, (neg_smi) << one);
525 assertEquals(neg_smi / 8, (neg_smi) >> three);
526 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three);
527 assertEquals(0x46536000, (neg_smi) << four);
528 assertEquals(-0x73594000, (neg_smi) << five);
529 assertEquals(neg_smi, (neg_smi - 0.5) >> zero);
530 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero);
531 assertEquals(neg_smi, (neg_smi - 0.5) << zero);
532 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one);
533 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one);
534 assertEquals(neg_non_smi, (neg_smi - 0.5) << one);
535 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three);
536 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three);
537 assertEquals(0x46536000, (neg_smi - 0.5) << four);
538 assertEquals(-0x73594000, (neg_smi - 0.5) << five);
539 // End block A repeat 2
541 // Repeat previous block, with computed values in the shift variables.
543 while (five < 5 ) ++five;
549 // Begin block A repeat 3
550 assertEquals(pos_non_smi, (pos_non_smi) >> zero);
551 assertEquals(pos_non_smi, (pos_non_smi) >>> zero);
552 assertEquals(pos_non_smi, (pos_non_smi) << zero);
553 assertEquals(neg_non_smi, (neg_non_smi) >> zero);
554 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero);
555 assertEquals(neg_non_smi, (neg_non_smi) << zero);
556 assertEquals(pos_smi, (pos_smi) >> zero);
557 assertEquals(pos_smi, (pos_smi) >>> zero);
558 assertEquals(pos_smi, (pos_smi) << zero);
559 assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero(2)");
560 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero);
561 assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero(2)");
563 assertEquals(pos_non_smi / 2, (pos_non_smi) >> one);
564 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one);
565 assertEquals(-0x1194D800, (pos_non_smi) << one);
566 assertEquals(pos_non_smi / 8, (pos_non_smi) >> three);
567 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three);
568 assertEquals(-0x46536000, (pos_non_smi) << three);
569 assertEquals(0x73594000, (pos_non_smi) << four);
570 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero);
571 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero);
572 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero);
573 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one);
574 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one);
575 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one);
576 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three);
577 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three);
578 assertEquals(-0x46536000, (pos_non_smi + 0.5) << three);
579 assertEquals(0x73594000, (pos_non_smi + 0.5) << four);
581 assertEquals(neg_non_smi / 2, (neg_non_smi) >> one);
582 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one);
583 assertEquals(0x1194D800, (neg_non_smi) << one);
584 assertEquals(neg_non_smi / 8, (neg_non_smi) >> three);
585 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three);
586 assertEquals(0x46536000, (neg_non_smi) << three);
587 assertEquals(-0x73594000, (neg_non_smi) << four);
588 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero);
589 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero);
590 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero);
591 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one);
592 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one);
593 assertEquals(0x1194D800, (neg_non_smi - 0.5) << one);
594 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three);
595 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5)
597 assertEquals(0x46536000, (neg_non_smi - 0.5) << three);
598 assertEquals(-0x73594000, (neg_non_smi - 0.5) << four);
600 assertEquals(pos_smi / 2, (pos_smi) >> one);
601 assertEquals(pos_smi / 2, (pos_smi) >>> one);
602 assertEquals(pos_non_smi, (pos_smi) << one);
603 assertEquals(pos_smi / 8, (pos_smi) >> three);
604 assertEquals(pos_smi / 8, (pos_smi) >>> three);
605 assertEquals(-0x2329b000, (pos_smi) << three);
606 assertEquals(0x73594000, (pos_smi) << five);
607 assertEquals(pos_smi, (pos_smi + 0.5) >> zero);
608 assertEquals(pos_smi, (pos_smi + 0.5) >>> zero);
609 assertEquals(pos_smi, (pos_smi + 0.5) << zero);
610 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one);
611 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one);
612 assertEquals(pos_non_smi, (pos_smi + 0.5) << one);
613 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three);
614 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three);
615 assertEquals(-0x2329b000, (pos_smi + 0.5) << three);
616 assertEquals(0x73594000, (pos_smi + 0.5) << five);
618 assertEquals(neg_smi / 2, (neg_smi) >> one);
619 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one);
620 assertEquals(neg_non_smi, (neg_smi) << one);
621 assertEquals(neg_smi / 8, (neg_smi) >> three);
622 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three);
623 assertEquals(0x46536000, (neg_smi) << four);
624 assertEquals(-0x73594000, (neg_smi) << five);
625 assertEquals(neg_smi, (neg_smi - 0.5) >> zero, "negsmi.5 >> zero");
626 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero);
627 assertEquals(neg_smi, (neg_smi - 0.5) << zero, "negsmi.5 << zero");
628 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one);
629 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one);
630 assertEquals(neg_non_smi, (neg_smi - 0.5) << one);
631 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three);
632 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three);
633 assertEquals(0x46536000, (neg_smi - 0.5) << four);
634 assertEquals(-0x73594000, (neg_smi - 0.5) << five);
635 // End block A repeat 3
637 // Test non-integer shift value
638 assertEquals(5, 20.5 >> 2.4);
639 assertEquals(5, 20.5 >> 2.7);
641 assertEquals(5, 20.5 >> shift);
642 assertEquals(5, 20.5 >> shift + 0.3);
643 shift = shift + zero;
644 assertEquals(5, 20.5 >> shift);
645 assertEquals(5, 20.5 >> shift + 0.3);
650 function intConversion() {
652 assertEquals(x, (x * 1.0000000001) | 0, "foo more " + x);
653 assertEquals(x, x | 0, "foo " + x);
655 assertEquals(x - 1, (x * 0.9999999999) | 0, "foo less " + x);
657 assertEquals(x + 1, (x * 0.9999999999) | 0, "foo less " + x);
660 for (var i = 1; i < 0x80000000; i *= 2) {
664 for (var i = 1; i < 1/0; i *= 2) {
665 assertEquals(i | 0, (i * 1.0000000000000001) | 0, "b" + i);
666 assertEquals(-i | 0, (i * -1.0000000000000001) | 0, "c" + i);
668 for (var i = 0.5; i > 0; i /= 2) {
669 assertEquals(0, i | 0, "d" + i);
670 assertEquals(0, -i | 0, "e" + i);
676 // Verify that we handle the (optimized) corner case of shifting by
677 // zero even for non-smis.
678 function shiftByZero(n) { return n << 0; }
680 assertEquals(3, shiftByZero(3.1415));
682 // Verify that the static type information of x >>> 32 is computed correctly.
683 function LogicalShiftRightByMultipleOf32(x) {
688 assertEquals(4589934592, LogicalShiftRightByMultipleOf32(-2000000000));
689 assertEquals(4589934592, LogicalShiftRightByMultipleOf32(-2000000000));
691 // Verify that the shift amount is reduced modulo 32, not modulo 64.
692 function LeftShiftThreeBy(x) {return 3 << x;}
693 assertEquals(24, LeftShiftThreeBy(3));
694 assertEquals(24, LeftShiftThreeBy(35));
695 assertEquals(24, LeftShiftThreeBy(67));
696 assertEquals(24, LeftShiftThreeBy(-29));
698 // Regression test for a bug in the ARM code generator. For some register
699 // allocations we got the Smi overflow case wrong.
700 function f(x, y) { return y + ( 1 << (x & 31)); }
701 assertEquals(-2147483647, f(31, 1));
703 // Regression test for correct handling of overflow in smi comparison.
704 assertTrue(-0x40000000 < 42);