1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/ADT/APInt.h"
11 #include "llvm/ADT/SmallString.h"
12 #include "gtest/gtest.h"
19 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
20 TEST(APIntTest, ShiftLeftByZero) {
21 APInt One = APInt::getNullValue(65) + 1;
22 APInt Shl = One.shl(0);
27 TEST(APIntTest, i128_NegativeCount) {
28 APInt Minus3(128, static_cast<uint64_t>(-3), true);
29 EXPECT_EQ(126u, Minus3.countLeadingOnes());
30 EXPECT_EQ(-3, Minus3.getSExtValue());
32 APInt Minus1(128, static_cast<uint64_t>(-1), true);
33 EXPECT_EQ(0u, Minus1.countLeadingZeros());
34 EXPECT_EQ(128u, Minus1.countLeadingOnes());
35 EXPECT_EQ(128u, Minus1.getActiveBits());
36 EXPECT_EQ(0u, Minus1.countTrailingZeros());
37 EXPECT_EQ(128u, Minus1.countTrailingOnes());
38 EXPECT_EQ(128u, Minus1.countPopulation());
39 EXPECT_EQ(-1, Minus1.getSExtValue());
42 // XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it.
43 #if defined(__llvm__) || !defined(__FreeBSD__)
45 TEST(APIntTest, i33_Count) {
46 APInt i33minus2(33, static_cast<uint64_t>(-2), true);
47 EXPECT_EQ(0u, i33minus2.countLeadingZeros());
48 EXPECT_EQ(32u, i33minus2.countLeadingOnes());
49 EXPECT_EQ(33u, i33minus2.getActiveBits());
50 EXPECT_EQ(1u, i33minus2.countTrailingZeros());
51 EXPECT_EQ(32u, i33minus2.countPopulation());
52 EXPECT_EQ(-2, i33minus2.getSExtValue());
53 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
58 TEST(APIntTest, i65_Count) {
59 APInt i65(65, 0, true);
60 EXPECT_EQ(65u, i65.countLeadingZeros());
61 EXPECT_EQ(0u, i65.countLeadingOnes());
62 EXPECT_EQ(0u, i65.getActiveBits());
63 EXPECT_EQ(1u, i65.getActiveWords());
64 EXPECT_EQ(65u, i65.countTrailingZeros());
65 EXPECT_EQ(0u, i65.countPopulation());
67 APInt i65minus(65, 0, true);
69 EXPECT_EQ(0u, i65minus.countLeadingZeros());
70 EXPECT_EQ(1u, i65minus.countLeadingOnes());
71 EXPECT_EQ(65u, i65minus.getActiveBits());
72 EXPECT_EQ(64u, i65minus.countTrailingZeros());
73 EXPECT_EQ(1u, i65minus.countPopulation());
76 TEST(APIntTest, i128_PositiveCount) {
77 APInt u128max = APInt::getAllOnesValue(128);
78 EXPECT_EQ(128u, u128max.countLeadingOnes());
79 EXPECT_EQ(0u, u128max.countLeadingZeros());
80 EXPECT_EQ(128u, u128max.getActiveBits());
81 EXPECT_EQ(0u, u128max.countTrailingZeros());
82 EXPECT_EQ(128u, u128max.countTrailingOnes());
83 EXPECT_EQ(128u, u128max.countPopulation());
85 APInt u64max(128, static_cast<uint64_t>(-1), false);
86 EXPECT_EQ(64u, u64max.countLeadingZeros());
87 EXPECT_EQ(0u, u64max.countLeadingOnes());
88 EXPECT_EQ(64u, u64max.getActiveBits());
89 EXPECT_EQ(0u, u64max.countTrailingZeros());
90 EXPECT_EQ(64u, u64max.countTrailingOnes());
91 EXPECT_EQ(64u, u64max.countPopulation());
92 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
94 APInt zero(128, 0, true);
95 EXPECT_EQ(128u, zero.countLeadingZeros());
96 EXPECT_EQ(0u, zero.countLeadingOnes());
97 EXPECT_EQ(0u, zero.getActiveBits());
98 EXPECT_EQ(128u, zero.countTrailingZeros());
99 EXPECT_EQ(0u, zero.countTrailingOnes());
100 EXPECT_EQ(0u, zero.countPopulation());
101 EXPECT_EQ(0u, zero.getSExtValue());
102 EXPECT_EQ(0u, zero.getZExtValue());
104 APInt one(128, 1, true);
105 EXPECT_EQ(127u, one.countLeadingZeros());
106 EXPECT_EQ(0u, one.countLeadingOnes());
107 EXPECT_EQ(1u, one.getActiveBits());
108 EXPECT_EQ(0u, one.countTrailingZeros());
109 EXPECT_EQ(1u, one.countTrailingOnes());
110 EXPECT_EQ(1u, one.countPopulation());
111 EXPECT_EQ(1, one.getSExtValue());
112 EXPECT_EQ(1u, one.getZExtValue());
115 TEST(APIntTest, i1) {
116 const APInt neg_two(1, static_cast<uint64_t>(-2), true);
117 const APInt neg_one(1, static_cast<uint64_t>(-1), true);
118 const APInt zero(1, 0);
119 const APInt one(1, 1);
120 const APInt two(1, 2);
122 EXPECT_EQ(0, neg_two.getSExtValue());
123 EXPECT_EQ(-1, neg_one.getSExtValue());
124 EXPECT_EQ(1u, neg_one.getZExtValue());
125 EXPECT_EQ(0u, zero.getZExtValue());
126 EXPECT_EQ(-1, one.getSExtValue());
127 EXPECT_EQ(1u, one.getZExtValue());
128 EXPECT_EQ(0u, two.getZExtValue());
129 EXPECT_EQ(0, two.getSExtValue());
131 // Basic equalities for 1-bit values.
132 EXPECT_EQ(zero, two);
133 EXPECT_EQ(zero, neg_two);
134 EXPECT_EQ(one, neg_one);
135 EXPECT_EQ(two, neg_two);
137 // Min/max signed values.
138 EXPECT_TRUE(zero.isMaxSignedValue());
139 EXPECT_FALSE(one.isMaxSignedValue());
140 EXPECT_FALSE(zero.isMinSignedValue());
141 EXPECT_TRUE(one.isMinSignedValue());
144 EXPECT_EQ(two, one + one);
145 EXPECT_EQ(zero, neg_one + one);
146 EXPECT_EQ(neg_two, neg_one + neg_one);
149 EXPECT_EQ(neg_two, neg_one - one);
150 EXPECT_EQ(two, one - neg_one);
151 EXPECT_EQ(zero, one - one);
154 EXPECT_EQ(zero, one << one);
155 EXPECT_EQ(one, one << zero);
156 EXPECT_EQ(zero, one.shl(1));
157 EXPECT_EQ(one, one.shl(0));
158 EXPECT_EQ(zero, one.lshr(1));
159 EXPECT_EQ(zero, one.ashr(1));
162 EXPECT_EQ(one, one.rotl(0));
163 EXPECT_EQ(one, one.rotl(1));
164 EXPECT_EQ(one, one.rotr(0));
165 EXPECT_EQ(one, one.rotr(1));
168 EXPECT_EQ(neg_one, neg_one * one);
169 EXPECT_EQ(neg_one, one * neg_one);
170 EXPECT_EQ(one, neg_one * neg_one);
171 EXPECT_EQ(one, one * one);
174 EXPECT_EQ(neg_one, one.sdiv(neg_one));
175 EXPECT_EQ(neg_one, neg_one.sdiv(one));
176 EXPECT_EQ(one, neg_one.sdiv(neg_one));
177 EXPECT_EQ(one, one.sdiv(one));
179 EXPECT_EQ(neg_one, one.udiv(neg_one));
180 EXPECT_EQ(neg_one, neg_one.udiv(one));
181 EXPECT_EQ(one, neg_one.udiv(neg_one));
182 EXPECT_EQ(one, one.udiv(one));
185 EXPECT_EQ(zero, neg_one.srem(one));
186 EXPECT_EQ(zero, neg_one.urem(one));
187 EXPECT_EQ(zero, one.srem(neg_one));
198 EXPECT_EQ(nine.srem(two), one);
199 EXPECT_EQ(nine.srem(-two), one);
200 EXPECT_EQ((-nine).srem(two), -one);
201 EXPECT_EQ((-nine).srem(-two), -one);
203 APInt::sdivrem(nine, two, q, r);
206 APInt::sdivrem(-nine, two, q, r);
209 APInt::sdivrem(nine, -two, q, r);
212 APInt::sdivrem(-nine, -two, q, r);
219 // Tests different div/rem varaints using scheme (a * b + c) / a
220 void testDiv(APInt a, APInt b, APInt c) {
221 ASSERT_TRUE(a.uge(b)); // Must: a >= b
222 ASSERT_TRUE(a.ugt(c)); // Must: a > c
230 APInt::udivrem(p, a, q, r);
237 APInt::sdivrem(p, a, q, r);
241 if (b.ugt(c)) { // Test also symmetric case
246 APInt::udivrem(p, b, q, r);
253 APInt::sdivrem(p, b, q, r);
259 TEST(APIntTest, divrem_big1) {
260 // Tests KnuthDiv rare step D6
261 testDiv({256, "1ffffffffffffffff", 16},
262 {256, "1ffffffffffffffff", 16},
266 TEST(APIntTest, divrem_big2) {
267 // Tests KnuthDiv rare step D6
268 testDiv({1024, "112233ceff"
269 "cecece000000ffffffffffffffffffff"
270 "ffffffffffffffffffffffffffffffff"
271 "ffffffffffffffffffffffffffffffff"
272 "ffffffffffffffffffffffffffffff33", 16},
273 {1024, "111111ffffffffffffffff"
274 "ffffffffffffffffffffffffffffffff"
275 "fffffffffffffffffffffffffffffccf"
276 "ffffffffffffffffffffffffffffff00", 16},
280 TEST(APIntTest, divrem_big3) {
281 // Tests KnuthDiv case without shift
282 testDiv({256, "80000001ffffffffffffffff", 16},
283 {256, "ffffffffffffff0000000", 16},
287 TEST(APIntTest, divrem_big4) {
288 // Tests heap allocation in divide() enfoced by huge numbers
289 testDiv(APInt{4096, 5}.shl(2001),
290 APInt{4096, 1}.shl(2000),
291 APInt{4096, 4219*13});
294 TEST(APIntTest, divrem_big5) {
295 // Tests one word divisor case of divide()
296 testDiv(APInt{1024, 19}.shl(811),
297 APInt{1024, 4356013}, // one word
301 TEST(APIntTest, divrem_big6) {
302 // Tests some rare "borrow" cases in D4 step
303 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16},
304 APInt{512, "10000000000000001000000000000001", 16},
305 APInt{512, "10000000000000000000000000000000", 16});
308 TEST(APIntTest, divrem_big7) {
309 // Yet another test for KnuthDiv rare step D6.
310 testDiv({224, "800000008000000200000005", 16},
311 {224, "fffffffd", 16},
312 {224, "80000000800000010000000f", 16});
315 TEST(APIntTest, fromString) {
316 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2));
317 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2));
318 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2));
319 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2));
320 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2));
322 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2));
323 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2));
324 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2));
325 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2));
326 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2));
328 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2));
329 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2));
330 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2));
331 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2));
332 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2));
335 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8));
336 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8));
337 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8));
338 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8));
339 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8));
340 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8));
342 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8));
343 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8));
344 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8));
345 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8));
346 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8));
347 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8));
349 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8));
350 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8));
351 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8));
352 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8));
353 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8));
354 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8));
357 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10));
358 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10));
359 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10));
360 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10));
361 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10));
362 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10));
364 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10));
365 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10));
366 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10));
367 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10));
368 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10));
369 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10));
372 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16));
373 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16));
374 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16));
375 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16));
376 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16));
377 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16));
379 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16));
380 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16));
381 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16));
382 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16));
383 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16));
384 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16));
386 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36));
387 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36));
388 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36));
389 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36));
390 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36));
391 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36));
393 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36));
394 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36));
395 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36));
396 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36));
397 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36));
398 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36));
401 TEST(APIntTest, FromArray) {
402 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1)));
405 TEST(APIntTest, StringBitsNeeded2) {
406 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2));
407 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2));
408 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2));
409 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2));
410 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2));
412 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2));
413 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2));
414 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2));
415 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2));
416 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2));
418 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2));
419 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2));
420 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2));
421 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2));
422 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2));
425 TEST(APIntTest, StringBitsNeeded8) {
426 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8));
427 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8));
428 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8));
429 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8));
430 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8));
432 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8));
433 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8));
434 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8));
435 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8));
436 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8));
438 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8));
439 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8));
440 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8));
441 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8));
442 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8));
445 TEST(APIntTest, StringBitsNeeded10) {
446 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10));
447 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10));
448 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10));
449 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10));
450 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10));
451 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10));
453 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10));
454 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10));
455 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10));
456 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10));
457 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10));
459 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10));
460 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10));
461 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
462 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
463 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
466 TEST(APIntTest, StringBitsNeeded16) {
467 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16));
468 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16));
469 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16));
470 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16));
471 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16));
473 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16));
474 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16));
475 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16));
476 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16));
477 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16));
479 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16));
480 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16));
481 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16));
482 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16));
483 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
486 TEST(APIntTest, toString) {
490 APInt(8, 0).toString(S, 2, true, true);
491 EXPECT_EQ(S.str().str(), "0b0");
493 APInt(8, 0).toString(S, 8, true, true);
494 EXPECT_EQ(S.str().str(), "00");
496 APInt(8, 0).toString(S, 10, true, true);
497 EXPECT_EQ(S.str().str(), "0");
499 APInt(8, 0).toString(S, 16, true, true);
500 EXPECT_EQ(S.str().str(), "0x0");
502 APInt(8, 0).toString(S, 36, true, false);
503 EXPECT_EQ(S.str().str(), "0");
507 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
508 EXPECT_EQ(S.str().str(), "0b11111111");
510 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
511 EXPECT_EQ(S.str().str(), "0377");
513 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
514 EXPECT_EQ(S.str().str(), "255");
516 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
517 EXPECT_EQ(S.str().str(), "0xFF");
519 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
520 EXPECT_EQ(S.str().str(), "73");
524 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
525 EXPECT_EQ(S.str().str(), "-0b1");
527 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
528 EXPECT_EQ(S.str().str(), "-01");
530 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
531 EXPECT_EQ(S.str().str(), "-1");
533 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
534 EXPECT_EQ(S.str().str(), "-0x1");
536 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
537 EXPECT_EQ(S.str().str(), "-1");
541 TEST(APIntTest, Log2) {
542 EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
543 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);
544 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1);
545 EXPECT_EQ(APInt(15, 8).logBase2(), 3U);
546 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U);
547 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3);
548 EXPECT_EQ(APInt(15, 9).logBase2(), 3U);
549 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U);
550 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1);
553 TEST(APIntTest, magic) {
554 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16));
555 EXPECT_EQ(APInt(32, 3).magic().s, 0U);
556 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16));
557 EXPECT_EQ(APInt(32, 5).magic().s, 1U);
558 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16));
559 EXPECT_EQ(APInt(32, 7).magic().s, 2U);
562 TEST(APIntTest, magicu) {
563 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16));
564 EXPECT_EQ(APInt(32, 3).magicu().s, 1U);
565 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16));
566 EXPECT_EQ(APInt(32, 5).magicu().s, 2U);
567 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16));
568 EXPECT_EQ(APInt(32, 7).magicu().s, 3U);
569 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16));
570 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U);
573 #ifdef GTEST_HAS_DEATH_TEST
575 TEST(APIntTest, StringDeath) {
576 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small");
577 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length");
578 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!");
579 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length");
580 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value.");
581 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width");
582 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length");
583 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string");
584 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string");
589 TEST(APIntTest, mul_clear) {
590 APInt ValA(65, -1ULL);
595 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
598 TEST(APIntTest, Rotate) {
599 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0));
600 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1));
601 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2));
602 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4));
603 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8));
605 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0));
606 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1));
607 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2));
608 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4));
609 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8));
611 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0));
612 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1));
613 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2));
614 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4));
615 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8));
617 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0));
618 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1));
619 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2));
620 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4));
621 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8));
623 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16);
624 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16);
625 EXPECT_EQ(Rot, Big.rotr(144));
628 TEST(APIntTest, Splat) {
630 EXPECT_EQ(ValA, APInt::getSplat(8, ValA));
631 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA));
634 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB));
635 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB));
638 TEST(APIntTest, tcDecrement) {
639 // Test single word decrement.
643 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1);
644 integerPart carry = APInt::tcDecrement(&singleWord, 1);
645 EXPECT_EQ(carry, integerPart(0));
646 EXPECT_EQ(singleWord, ~integerPart(0) >> 1);
651 integerPart singleWord = 0;
652 integerPart carry = APInt::tcDecrement(&singleWord, 1);
653 EXPECT_EQ(carry, integerPart(1));
654 EXPECT_EQ(singleWord, ~integerPart(0));
657 // Test multiword decrement.
659 // No across word borrow, no out borrow.
661 integerPart test[4] = {0x1, 0x1, 0x1, 0x1};
662 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1};
663 APInt::tcDecrement(test, 4);
664 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
667 // 1 across word borrow, no out borrow.
669 integerPart test[4] = {0x0, 0xF, 0x1, 0x1};
670 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1};
671 integerPart carry = APInt::tcDecrement(test, 4);
672 EXPECT_EQ(carry, integerPart(0));
673 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
676 // 2 across word borrow, no out borrow.
678 integerPart test[4] = {0x0, 0x0, 0xC, 0x1};
679 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1};
680 integerPart carry = APInt::tcDecrement(test, 4);
681 EXPECT_EQ(carry, integerPart(0));
682 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
685 // 3 across word borrow, no out borrow.
687 integerPart test[4] = {0x0, 0x0, 0x0, 0x1};
688 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0};
689 integerPart carry = APInt::tcDecrement(test, 4);
690 EXPECT_EQ(carry, integerPart(0));
691 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
694 // 3 across word borrow, with out borrow.
696 integerPart test[4] = {0x0, 0x0, 0x0, 0x0};
697 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)};
698 integerPart carry = APInt::tcDecrement(test, 4);
699 EXPECT_EQ(carry, integerPart(1));
700 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
704 TEST(APIntTest, arrayAccess) {
705 // Single word check.
706 uint64_t E1 = 0x2CA7F46BF6569915ULL;
708 for (unsigned i = 0, e = 64; i < e; ++i) {
709 EXPECT_EQ(bool(E1 & (1ULL << i)),
714 integerPart E2[4] = {
715 0xEB6EB136591CBA21ULL,
716 0x7B9358BD6A33F10AULL,
717 0x7E7FFA5EADD8846ULL,
718 0x305F341CA00B613DULL
720 APInt A2(integerPartWidth*4, E2);
721 for (unsigned i = 0; i < 4; ++i) {
722 for (unsigned j = 0; j < integerPartWidth; ++j) {
723 EXPECT_EQ(bool(E2[i] & (1ULL << j)),
724 A2[i*integerPartWidth + j]);
729 TEST(APIntTest, LargeAPIntConstruction) {
730 // Check that we can properly construct very large APInt. It is very
731 // unlikely that people will ever do this, but it is a legal input,
732 // so we should not crash on it.
733 APInt A9(UINT32_MAX, 0);
734 EXPECT_FALSE(A9.getBoolValue());
737 TEST(APIntTest, nearestLogBase2) {
738 // Single word check.
741 uint64_t I1 = 0x1800001;
743 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2());
746 uint64_t I2 = 0x1000011;
748 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2());
750 // Test ties round up.
751 uint64_t I3 = 0x1800000;
753 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2());
755 // Multiple word check.
758 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0};
759 APInt A4(integerPartWidth*4, I4);
760 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2());
763 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0};
764 APInt A5(integerPartWidth*4, I5);
765 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2());
767 // Test ties round up.
768 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18};
769 APInt A6(integerPartWidth*4, I6);
770 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2());
772 // Test BitWidth == 1 special cases.
774 EXPECT_EQ(A7.nearestLogBase2(), 0ULL);
776 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX);
778 // Test the zero case when we have a bit width large enough such
779 // that the bit width is larger than UINT32_MAX-1.
780 APInt A9(UINT32_MAX, 0);
781 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX);
784 TEST(APIntTest, IsSplat) {
785 APInt A(32, 0x01010101);
786 EXPECT_FALSE(A.isSplat(1));
787 EXPECT_FALSE(A.isSplat(2));
788 EXPECT_FALSE(A.isSplat(4));
789 EXPECT_TRUE(A.isSplat(8));
790 EXPECT_TRUE(A.isSplat(16));
791 EXPECT_TRUE(A.isSplat(32));
793 APInt B(24, 0xAAAAAA);
794 EXPECT_FALSE(B.isSplat(1));
795 EXPECT_TRUE(B.isSplat(2));
796 EXPECT_TRUE(B.isSplat(4));
797 EXPECT_TRUE(B.isSplat(8));
798 EXPECT_TRUE(B.isSplat(24));
800 APInt C(24, 0xABAAAB);
801 EXPECT_FALSE(C.isSplat(1));
802 EXPECT_FALSE(C.isSplat(2));
803 EXPECT_FALSE(C.isSplat(4));
804 EXPECT_FALSE(C.isSplat(8));
805 EXPECT_TRUE(C.isSplat(24));
807 APInt D(32, 0xABBAABBA);
808 EXPECT_FALSE(D.isSplat(1));
809 EXPECT_FALSE(D.isSplat(2));
810 EXPECT_FALSE(D.isSplat(4));
811 EXPECT_FALSE(D.isSplat(8));
812 EXPECT_TRUE(D.isSplat(16));
813 EXPECT_TRUE(D.isSplat(32));
816 EXPECT_TRUE(E.isSplat(1));
817 EXPECT_TRUE(E.isSplat(2));
818 EXPECT_TRUE(E.isSplat(4));
819 EXPECT_TRUE(E.isSplat(8));
820 EXPECT_TRUE(E.isSplat(16));
821 EXPECT_TRUE(E.isSplat(32));
824 #if defined(__clang__)
825 // Disable the pragma warning from versions of Clang without -Wself-move
826 #pragma clang diagnostic push
827 #pragma clang diagnostic ignored "-Wunknown-pragmas"
828 // Disable the warning that triggers on exactly what is being tested.
829 #pragma clang diagnostic push
830 #pragma clang diagnostic ignored "-Wself-move"
832 TEST(APIntTest, SelfMoveAssignment) {
833 APInt X(32, 0xdeadbeef);
835 EXPECT_EQ(32u, X.getBitWidth());
836 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue());
838 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL};
841 EXPECT_EQ(128u, Y.getBitWidth());
842 EXPECT_EQ(~0ULL, Y.getLimitedValue());
843 const uint64_t *Raw = Y.getRawData();
844 EXPECT_EQ(2u, Y.getNumWords());
845 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]);
846 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]);
848 #if defined(__clang__)
849 #pragma clang diagnostic pop
850 #pragma clang diagnostic pop