1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/ADT/APInt.h"
11 #include "llvm/ADT/SmallString.h"
12 #include "gtest/gtest.h"
13 #include <array>
14 #include <ostream>
15
16 using namespace llvm;
17
18 namespace {
19
TEST(APIntTest,ValueInit)20 TEST(APIntTest, ValueInit) {
21 APInt Zero = APInt();
22 EXPECT_TRUE(!Zero);
23 EXPECT_TRUE(!Zero.zext(64));
24 EXPECT_TRUE(!Zero.sext(64));
25 }
26
27 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
TEST(APIntTest,ShiftLeftByZero)28 TEST(APIntTest, ShiftLeftByZero) {
29 APInt One = APInt::getNullValue(65) + 1;
30 APInt Shl = One.shl(0);
31 EXPECT_TRUE(Shl[0]);
32 EXPECT_FALSE(Shl[1]);
33 }
34
TEST(APIntTest,i128_NegativeCount)35 TEST(APIntTest, i128_NegativeCount) {
36 APInt Minus3(128, static_cast<uint64_t>(-3), true);
37 EXPECT_EQ(126u, Minus3.countLeadingOnes());
38 EXPECT_EQ(-3, Minus3.getSExtValue());
39
40 APInt Minus1(128, static_cast<uint64_t>(-1), true);
41 EXPECT_EQ(0u, Minus1.countLeadingZeros());
42 EXPECT_EQ(128u, Minus1.countLeadingOnes());
43 EXPECT_EQ(128u, Minus1.getActiveBits());
44 EXPECT_EQ(0u, Minus1.countTrailingZeros());
45 EXPECT_EQ(128u, Minus1.countTrailingOnes());
46 EXPECT_EQ(128u, Minus1.countPopulation());
47 EXPECT_EQ(-1, Minus1.getSExtValue());
48 }
49
50 // XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it.
51 #if defined(__llvm__) || !defined(__FreeBSD__)
52
TEST(APIntTest,i33_Count)53 TEST(APIntTest, i33_Count) {
54 APInt i33minus2(33, static_cast<uint64_t>(-2), true);
55 EXPECT_EQ(0u, i33minus2.countLeadingZeros());
56 EXPECT_EQ(32u, i33minus2.countLeadingOnes());
57 EXPECT_EQ(33u, i33minus2.getActiveBits());
58 EXPECT_EQ(1u, i33minus2.countTrailingZeros());
59 EXPECT_EQ(32u, i33minus2.countPopulation());
60 EXPECT_EQ(-2, i33minus2.getSExtValue());
61 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
62 }
63
64 #endif
65
TEST(APIntTest,i65_Count)66 TEST(APIntTest, i65_Count) {
67 APInt i65(65, 0, true);
68 EXPECT_EQ(65u, i65.countLeadingZeros());
69 EXPECT_EQ(0u, i65.countLeadingOnes());
70 EXPECT_EQ(0u, i65.getActiveBits());
71 EXPECT_EQ(1u, i65.getActiveWords());
72 EXPECT_EQ(65u, i65.countTrailingZeros());
73 EXPECT_EQ(0u, i65.countPopulation());
74
75 APInt i65minus(65, 0, true);
76 i65minus.setBit(64);
77 EXPECT_EQ(0u, i65minus.countLeadingZeros());
78 EXPECT_EQ(1u, i65minus.countLeadingOnes());
79 EXPECT_EQ(65u, i65minus.getActiveBits());
80 EXPECT_EQ(64u, i65minus.countTrailingZeros());
81 EXPECT_EQ(1u, i65minus.countPopulation());
82 }
83
TEST(APIntTest,i128_PositiveCount)84 TEST(APIntTest, i128_PositiveCount) {
85 APInt u128max = APInt::getAllOnesValue(128);
86 EXPECT_EQ(128u, u128max.countLeadingOnes());
87 EXPECT_EQ(0u, u128max.countLeadingZeros());
88 EXPECT_EQ(128u, u128max.getActiveBits());
89 EXPECT_EQ(0u, u128max.countTrailingZeros());
90 EXPECT_EQ(128u, u128max.countTrailingOnes());
91 EXPECT_EQ(128u, u128max.countPopulation());
92
93 APInt u64max(128, static_cast<uint64_t>(-1), false);
94 EXPECT_EQ(64u, u64max.countLeadingZeros());
95 EXPECT_EQ(0u, u64max.countLeadingOnes());
96 EXPECT_EQ(64u, u64max.getActiveBits());
97 EXPECT_EQ(0u, u64max.countTrailingZeros());
98 EXPECT_EQ(64u, u64max.countTrailingOnes());
99 EXPECT_EQ(64u, u64max.countPopulation());
100 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
101
102 APInt zero(128, 0, true);
103 EXPECT_EQ(128u, zero.countLeadingZeros());
104 EXPECT_EQ(0u, zero.countLeadingOnes());
105 EXPECT_EQ(0u, zero.getActiveBits());
106 EXPECT_EQ(128u, zero.countTrailingZeros());
107 EXPECT_EQ(0u, zero.countTrailingOnes());
108 EXPECT_EQ(0u, zero.countPopulation());
109 EXPECT_EQ(0u, zero.getSExtValue());
110 EXPECT_EQ(0u, zero.getZExtValue());
111
112 APInt one(128, 1, true);
113 EXPECT_EQ(127u, one.countLeadingZeros());
114 EXPECT_EQ(0u, one.countLeadingOnes());
115 EXPECT_EQ(1u, one.getActiveBits());
116 EXPECT_EQ(0u, one.countTrailingZeros());
117 EXPECT_EQ(1u, one.countTrailingOnes());
118 EXPECT_EQ(1u, one.countPopulation());
119 EXPECT_EQ(1, one.getSExtValue());
120 EXPECT_EQ(1u, one.getZExtValue());
121 }
122
TEST(APIntTest,i1)123 TEST(APIntTest, i1) {
124 const APInt neg_two(1, static_cast<uint64_t>(-2), true);
125 const APInt neg_one(1, static_cast<uint64_t>(-1), true);
126 const APInt zero(1, 0);
127 const APInt one(1, 1);
128 const APInt two(1, 2);
129
130 EXPECT_EQ(0, neg_two.getSExtValue());
131 EXPECT_EQ(-1, neg_one.getSExtValue());
132 EXPECT_EQ(1u, neg_one.getZExtValue());
133 EXPECT_EQ(0u, zero.getZExtValue());
134 EXPECT_EQ(-1, one.getSExtValue());
135 EXPECT_EQ(1u, one.getZExtValue());
136 EXPECT_EQ(0u, two.getZExtValue());
137 EXPECT_EQ(0, two.getSExtValue());
138
139 // Basic equalities for 1-bit values.
140 EXPECT_EQ(zero, two);
141 EXPECT_EQ(zero, neg_two);
142 EXPECT_EQ(one, neg_one);
143 EXPECT_EQ(two, neg_two);
144
145 // Min/max signed values.
146 EXPECT_TRUE(zero.isMaxSignedValue());
147 EXPECT_FALSE(one.isMaxSignedValue());
148 EXPECT_FALSE(zero.isMinSignedValue());
149 EXPECT_TRUE(one.isMinSignedValue());
150
151 // Additions.
152 EXPECT_EQ(two, one + one);
153 EXPECT_EQ(zero, neg_one + one);
154 EXPECT_EQ(neg_two, neg_one + neg_one);
155
156 // Subtractions.
157 EXPECT_EQ(neg_two, neg_one - one);
158 EXPECT_EQ(two, one - neg_one);
159 EXPECT_EQ(zero, one - one);
160
161 // Shifts.
162 EXPECT_EQ(zero, one << one);
163 EXPECT_EQ(one, one << zero);
164 EXPECT_EQ(zero, one.shl(1));
165 EXPECT_EQ(one, one.shl(0));
166 EXPECT_EQ(zero, one.lshr(1));
167 EXPECT_EQ(zero, one.ashr(1));
168
169 // Rotates.
170 EXPECT_EQ(one, one.rotl(0));
171 EXPECT_EQ(one, one.rotl(1));
172 EXPECT_EQ(one, one.rotr(0));
173 EXPECT_EQ(one, one.rotr(1));
174
175 // Multiplies.
176 EXPECT_EQ(neg_one, neg_one * one);
177 EXPECT_EQ(neg_one, one * neg_one);
178 EXPECT_EQ(one, neg_one * neg_one);
179 EXPECT_EQ(one, one * one);
180
181 // Divides.
182 EXPECT_EQ(neg_one, one.sdiv(neg_one));
183 EXPECT_EQ(neg_one, neg_one.sdiv(one));
184 EXPECT_EQ(one, neg_one.sdiv(neg_one));
185 EXPECT_EQ(one, one.sdiv(one));
186
187 EXPECT_EQ(neg_one, one.udiv(neg_one));
188 EXPECT_EQ(neg_one, neg_one.udiv(one));
189 EXPECT_EQ(one, neg_one.udiv(neg_one));
190 EXPECT_EQ(one, one.udiv(one));
191
192 // Remainders.
193 EXPECT_EQ(zero, neg_one.srem(one));
194 EXPECT_EQ(zero, neg_one.urem(one));
195 EXPECT_EQ(zero, one.srem(neg_one));
196
197 // sdivrem
198 {
199 APInt q(8, 0);
200 APInt r(8, 0);
201 APInt one(8, 1);
202 APInt two(8, 2);
203 APInt nine(8, 9);
204 APInt four(8, 4);
205
206 EXPECT_EQ(nine.srem(two), one);
207 EXPECT_EQ(nine.srem(-two), one);
208 EXPECT_EQ((-nine).srem(two), -one);
209 EXPECT_EQ((-nine).srem(-two), -one);
210
211 APInt::sdivrem(nine, two, q, r);
212 EXPECT_EQ(four, q);
213 EXPECT_EQ(one, r);
214 APInt::sdivrem(-nine, two, q, r);
215 EXPECT_EQ(-four, q);
216 EXPECT_EQ(-one, r);
217 APInt::sdivrem(nine, -two, q, r);
218 EXPECT_EQ(-four, q);
219 EXPECT_EQ(one, r);
220 APInt::sdivrem(-nine, -two, q, r);
221 EXPECT_EQ(four, q);
222 EXPECT_EQ(-one, r);
223 }
224 }
225
TEST(APIntTest,compare)226 TEST(APIntTest, compare) {
227 std::array<APInt, 5> testVals{{
228 APInt{16, 2},
229 APInt{16, 1},
230 APInt{16, 0},
231 APInt{16, (uint64_t)-1, true},
232 APInt{16, (uint64_t)-2, true},
233 }};
234
235 for (auto &arg1 : testVals)
236 for (auto &arg2 : testVals) {
237 auto uv1 = arg1.getZExtValue();
238 auto uv2 = arg2.getZExtValue();
239 auto sv1 = arg1.getSExtValue();
240 auto sv2 = arg2.getSExtValue();
241
242 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2));
243 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2));
244 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2));
245 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2));
246
247 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2));
248 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2));
249 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2));
250 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2));
251
252 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2));
253 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2));
254 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2));
255 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2));
256
257 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2));
258 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2));
259 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2));
260 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2));
261 }
262 }
263
TEST(APIntTest,compareWithRawIntegers)264 TEST(APIntTest, compareWithRawIntegers) {
265 EXPECT_TRUE(!APInt(8, 1).uge(256));
266 EXPECT_TRUE(!APInt(8, 1).ugt(256));
267 EXPECT_TRUE( APInt(8, 1).ule(256));
268 EXPECT_TRUE( APInt(8, 1).ult(256));
269 EXPECT_TRUE(!APInt(8, 1).sge(256));
270 EXPECT_TRUE(!APInt(8, 1).sgt(256));
271 EXPECT_TRUE( APInt(8, 1).sle(256));
272 EXPECT_TRUE( APInt(8, 1).slt(256));
273 EXPECT_TRUE(!(APInt(8, 0) == 256));
274 EXPECT_TRUE( APInt(8, 0) != 256);
275 EXPECT_TRUE(!(APInt(8, 1) == 256));
276 EXPECT_TRUE( APInt(8, 1) != 256);
277
278 auto uint64max = UINT64_MAX;
279 auto int64max = INT64_MAX;
280 auto int64min = INT64_MIN;
281
282 auto u64 = APInt{128, uint64max};
283 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true};
284 auto big = u64 + 1;
285
286 EXPECT_TRUE( u64.uge(uint64max));
287 EXPECT_TRUE(!u64.ugt(uint64max));
288 EXPECT_TRUE( u64.ule(uint64max));
289 EXPECT_TRUE(!u64.ult(uint64max));
290 EXPECT_TRUE( u64.sge(int64max));
291 EXPECT_TRUE( u64.sgt(int64max));
292 EXPECT_TRUE(!u64.sle(int64max));
293 EXPECT_TRUE(!u64.slt(int64max));
294 EXPECT_TRUE( u64.sge(int64min));
295 EXPECT_TRUE( u64.sgt(int64min));
296 EXPECT_TRUE(!u64.sle(int64min));
297 EXPECT_TRUE(!u64.slt(int64min));
298
299 EXPECT_TRUE(u64 == uint64max);
300 EXPECT_TRUE(u64 != int64max);
301 EXPECT_TRUE(u64 != int64min);
302
303 EXPECT_TRUE(!s64.uge(uint64max));
304 EXPECT_TRUE(!s64.ugt(uint64max));
305 EXPECT_TRUE( s64.ule(uint64max));
306 EXPECT_TRUE( s64.ult(uint64max));
307 EXPECT_TRUE( s64.sge(int64max));
308 EXPECT_TRUE(!s64.sgt(int64max));
309 EXPECT_TRUE( s64.sle(int64max));
310 EXPECT_TRUE(!s64.slt(int64max));
311 EXPECT_TRUE( s64.sge(int64min));
312 EXPECT_TRUE( s64.sgt(int64min));
313 EXPECT_TRUE(!s64.sle(int64min));
314 EXPECT_TRUE(!s64.slt(int64min));
315
316 EXPECT_TRUE(s64 != uint64max);
317 EXPECT_TRUE(s64 == int64max);
318 EXPECT_TRUE(s64 != int64min);
319
320 EXPECT_TRUE( big.uge(uint64max));
321 EXPECT_TRUE( big.ugt(uint64max));
322 EXPECT_TRUE(!big.ule(uint64max));
323 EXPECT_TRUE(!big.ult(uint64max));
324 EXPECT_TRUE( big.sge(int64max));
325 EXPECT_TRUE( big.sgt(int64max));
326 EXPECT_TRUE(!big.sle(int64max));
327 EXPECT_TRUE(!big.slt(int64max));
328 EXPECT_TRUE( big.sge(int64min));
329 EXPECT_TRUE( big.sgt(int64min));
330 EXPECT_TRUE(!big.sle(int64min));
331 EXPECT_TRUE(!big.slt(int64min));
332
333 EXPECT_TRUE(big != uint64max);
334 EXPECT_TRUE(big != int64max);
335 EXPECT_TRUE(big != int64min);
336 }
337
TEST(APIntTest,compareWithInt64Min)338 TEST(APIntTest, compareWithInt64Min) {
339 int64_t edge = INT64_MIN;
340 int64_t edgeP1 = edge + 1;
341 int64_t edgeM1 = INT64_MAX;
342 auto a = APInt{64, static_cast<uint64_t>(edge), true};
343
344 EXPECT_TRUE(!a.slt(edge));
345 EXPECT_TRUE( a.sle(edge));
346 EXPECT_TRUE(!a.sgt(edge));
347 EXPECT_TRUE( a.sge(edge));
348 EXPECT_TRUE( a.slt(edgeP1));
349 EXPECT_TRUE( a.sle(edgeP1));
350 EXPECT_TRUE(!a.sgt(edgeP1));
351 EXPECT_TRUE(!a.sge(edgeP1));
352 EXPECT_TRUE( a.slt(edgeM1));
353 EXPECT_TRUE( a.sle(edgeM1));
354 EXPECT_TRUE(!a.sgt(edgeM1));
355 EXPECT_TRUE(!a.sge(edgeM1));
356 }
357
TEST(APIntTest,compareWithHalfInt64Max)358 TEST(APIntTest, compareWithHalfInt64Max) {
359 uint64_t edge = 0x4000000000000000;
360 uint64_t edgeP1 = edge + 1;
361 uint64_t edgeM1 = edge - 1;
362 auto a = APInt{64, edge};
363
364 EXPECT_TRUE(!a.ult(edge));
365 EXPECT_TRUE( a.ule(edge));
366 EXPECT_TRUE(!a.ugt(edge));
367 EXPECT_TRUE( a.uge(edge));
368 EXPECT_TRUE( a.ult(edgeP1));
369 EXPECT_TRUE( a.ule(edgeP1));
370 EXPECT_TRUE(!a.ugt(edgeP1));
371 EXPECT_TRUE(!a.uge(edgeP1));
372 EXPECT_TRUE(!a.ult(edgeM1));
373 EXPECT_TRUE(!a.ule(edgeM1));
374 EXPECT_TRUE( a.ugt(edgeM1));
375 EXPECT_TRUE( a.uge(edgeM1));
376
377 EXPECT_TRUE(!a.slt(edge));
378 EXPECT_TRUE( a.sle(edge));
379 EXPECT_TRUE(!a.sgt(edge));
380 EXPECT_TRUE( a.sge(edge));
381 EXPECT_TRUE( a.slt(edgeP1));
382 EXPECT_TRUE( a.sle(edgeP1));
383 EXPECT_TRUE(!a.sgt(edgeP1));
384 EXPECT_TRUE(!a.sge(edgeP1));
385 EXPECT_TRUE(!a.slt(edgeM1));
386 EXPECT_TRUE(!a.sle(edgeM1));
387 EXPECT_TRUE( a.sgt(edgeM1));
388 EXPECT_TRUE( a.sge(edgeM1));
389 }
390
391
392 // Tests different div/rem varaints using scheme (a * b + c) / a
testDiv(APInt a,APInt b,APInt c)393 void testDiv(APInt a, APInt b, APInt c) {
394 ASSERT_TRUE(a.uge(b)); // Must: a >= b
395 ASSERT_TRUE(a.ugt(c)); // Must: a > c
396
397 auto p = a * b + c;
398
399 auto q = p.udiv(a);
400 auto r = p.urem(a);
401 EXPECT_EQ(b, q);
402 EXPECT_EQ(c, r);
403 APInt::udivrem(p, a, q, r);
404 EXPECT_EQ(b, q);
405 EXPECT_EQ(c, r);
406 q = p.sdiv(a);
407 r = p.srem(a);
408 EXPECT_EQ(b, q);
409 EXPECT_EQ(c, r);
410 APInt::sdivrem(p, a, q, r);
411 EXPECT_EQ(b, q);
412 EXPECT_EQ(c, r);
413
414 if (b.ugt(c)) { // Test also symmetric case
415 q = p.udiv(b);
416 r = p.urem(b);
417 EXPECT_EQ(a, q);
418 EXPECT_EQ(c, r);
419 APInt::udivrem(p, b, q, r);
420 EXPECT_EQ(a, q);
421 EXPECT_EQ(c, r);
422 q = p.sdiv(b);
423 r = p.srem(b);
424 EXPECT_EQ(a, q);
425 EXPECT_EQ(c, r);
426 APInt::sdivrem(p, b, q, r);
427 EXPECT_EQ(a, q);
428 EXPECT_EQ(c, r);
429 }
430 }
431
TEST(APIntTest,divrem_big1)432 TEST(APIntTest, divrem_big1) {
433 // Tests KnuthDiv rare step D6
434 testDiv({256, "1ffffffffffffffff", 16},
435 {256, "1ffffffffffffffff", 16},
436 {256, 0});
437 }
438
TEST(APIntTest,divrem_big2)439 TEST(APIntTest, divrem_big2) {
440 // Tests KnuthDiv rare step D6
441 testDiv({1024, "112233ceff"
442 "cecece000000ffffffffffffffffffff"
443 "ffffffffffffffffffffffffffffffff"
444 "ffffffffffffffffffffffffffffffff"
445 "ffffffffffffffffffffffffffffff33", 16},
446 {1024, "111111ffffffffffffffff"
447 "ffffffffffffffffffffffffffffffff"
448 "fffffffffffffffffffffffffffffccf"
449 "ffffffffffffffffffffffffffffff00", 16},
450 {1024, 7919});
451 }
452
TEST(APIntTest,divrem_big3)453 TEST(APIntTest, divrem_big3) {
454 // Tests KnuthDiv case without shift
455 testDiv({256, "80000001ffffffffffffffff", 16},
456 {256, "ffffffffffffff0000000", 16},
457 {256, 4219});
458 }
459
TEST(APIntTest,divrem_big4)460 TEST(APIntTest, divrem_big4) {
461 // Tests heap allocation in divide() enfoced by huge numbers
462 testDiv(APInt{4096, 5}.shl(2001),
463 APInt{4096, 1}.shl(2000),
464 APInt{4096, 4219*13});
465 }
466
TEST(APIntTest,divrem_big5)467 TEST(APIntTest, divrem_big5) {
468 // Tests one word divisor case of divide()
469 testDiv(APInt{1024, 19}.shl(811),
470 APInt{1024, 4356013}, // one word
471 APInt{1024, 1});
472 }
473
TEST(APIntTest,divrem_big6)474 TEST(APIntTest, divrem_big6) {
475 // Tests some rare "borrow" cases in D4 step
476 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16},
477 APInt{512, "10000000000000001000000000000001", 16},
478 APInt{512, "10000000000000000000000000000000", 16});
479 }
480
TEST(APIntTest,divrem_big7)481 TEST(APIntTest, divrem_big7) {
482 // Yet another test for KnuthDiv rare step D6.
483 testDiv({224, "800000008000000200000005", 16},
484 {224, "fffffffd", 16},
485 {224, "80000000800000010000000f", 16});
486 }
487
TEST(APIntTest,fromString)488 TEST(APIntTest, fromString) {
489 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2));
490 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2));
491 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2));
492 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2));
493 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2));
494
495 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2));
496 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2));
497 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2));
498 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2));
499 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2));
500
501 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2));
502 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2));
503 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2));
504 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2));
505 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2));
506
507
508 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8));
509 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8));
510 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8));
511 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8));
512 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8));
513 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8));
514
515 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8));
516 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8));
517 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8));
518 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8));
519 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8));
520 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8));
521
522 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8));
523 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8));
524 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8));
525 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8));
526 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8));
527 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8));
528
529
530 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10));
531 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10));
532 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10));
533 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10));
534 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10));
535 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10));
536
537 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10));
538 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10));
539 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10));
540 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10));
541 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10));
542 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10));
543
544
545 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16));
546 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16));
547 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16));
548 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16));
549 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16));
550 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16));
551
552 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16));
553 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16));
554 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16));
555 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16));
556 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16));
557 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16));
558
559 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36));
560 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36));
561 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36));
562 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36));
563 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36));
564 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36));
565
566 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36));
567 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36));
568 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36));
569 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36));
570 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36));
571 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36));
572 }
573
TEST(APIntTest,FromArray)574 TEST(APIntTest, FromArray) {
575 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1)));
576 }
577
TEST(APIntTest,StringBitsNeeded2)578 TEST(APIntTest, StringBitsNeeded2) {
579 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2));
580 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2));
581 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2));
582 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2));
583 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2));
584
585 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2));
586 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2));
587 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2));
588 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2));
589 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2));
590
591 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2));
592 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2));
593 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2));
594 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2));
595 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2));
596 }
597
TEST(APIntTest,StringBitsNeeded8)598 TEST(APIntTest, StringBitsNeeded8) {
599 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8));
600 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8));
601 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8));
602 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8));
603 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8));
604
605 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8));
606 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8));
607 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8));
608 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8));
609 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8));
610
611 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8));
612 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8));
613 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8));
614 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8));
615 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8));
616 }
617
TEST(APIntTest,StringBitsNeeded10)618 TEST(APIntTest, StringBitsNeeded10) {
619 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10));
620 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10));
621 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10));
622 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10));
623 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10));
624 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10));
625
626 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10));
627 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10));
628 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10));
629 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10));
630 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10));
631
632 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10));
633 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10));
634 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
635 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
636 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
637 }
638
TEST(APIntTest,StringBitsNeeded16)639 TEST(APIntTest, StringBitsNeeded16) {
640 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16));
641 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16));
642 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16));
643 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16));
644 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16));
645
646 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16));
647 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16));
648 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16));
649 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16));
650 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16));
651
652 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16));
653 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16));
654 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16));
655 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16));
656 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
657 }
658
TEST(APIntTest,toString)659 TEST(APIntTest, toString) {
660 SmallString<16> S;
661 bool isSigned;
662
663 APInt(8, 0).toString(S, 2, true, true);
664 EXPECT_EQ(S.str().str(), "0b0");
665 S.clear();
666 APInt(8, 0).toString(S, 8, true, true);
667 EXPECT_EQ(S.str().str(), "00");
668 S.clear();
669 APInt(8, 0).toString(S, 10, true, true);
670 EXPECT_EQ(S.str().str(), "0");
671 S.clear();
672 APInt(8, 0).toString(S, 16, true, true);
673 EXPECT_EQ(S.str().str(), "0x0");
674 S.clear();
675 APInt(8, 0).toString(S, 36, true, false);
676 EXPECT_EQ(S.str().str(), "0");
677 S.clear();
678
679 isSigned = false;
680 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
681 EXPECT_EQ(S.str().str(), "0b11111111");
682 S.clear();
683 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
684 EXPECT_EQ(S.str().str(), "0377");
685 S.clear();
686 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
687 EXPECT_EQ(S.str().str(), "255");
688 S.clear();
689 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
690 EXPECT_EQ(S.str().str(), "0xFF");
691 S.clear();
692 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
693 EXPECT_EQ(S.str().str(), "73");
694 S.clear();
695
696 isSigned = true;
697 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
698 EXPECT_EQ(S.str().str(), "-0b1");
699 S.clear();
700 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
701 EXPECT_EQ(S.str().str(), "-01");
702 S.clear();
703 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
704 EXPECT_EQ(S.str().str(), "-1");
705 S.clear();
706 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
707 EXPECT_EQ(S.str().str(), "-0x1");
708 S.clear();
709 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
710 EXPECT_EQ(S.str().str(), "-1");
711 S.clear();
712 }
713
TEST(APIntTest,Log2)714 TEST(APIntTest, Log2) {
715 EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
716 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);
717 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1);
718 EXPECT_EQ(APInt(15, 8).logBase2(), 3U);
719 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U);
720 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3);
721 EXPECT_EQ(APInt(15, 9).logBase2(), 3U);
722 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U);
723 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1);
724 }
725
TEST(APIntTest,magic)726 TEST(APIntTest, magic) {
727 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16));
728 EXPECT_EQ(APInt(32, 3).magic().s, 0U);
729 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16));
730 EXPECT_EQ(APInt(32, 5).magic().s, 1U);
731 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16));
732 EXPECT_EQ(APInt(32, 7).magic().s, 2U);
733 }
734
TEST(APIntTest,magicu)735 TEST(APIntTest, magicu) {
736 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16));
737 EXPECT_EQ(APInt(32, 3).magicu().s, 1U);
738 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16));
739 EXPECT_EQ(APInt(32, 5).magicu().s, 2U);
740 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16));
741 EXPECT_EQ(APInt(32, 7).magicu().s, 3U);
742 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16));
743 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U);
744 }
745
746 #ifdef GTEST_HAS_DEATH_TEST
747 #ifndef NDEBUG
TEST(APIntTest,StringDeath)748 TEST(APIntTest, StringDeath) {
749 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small");
750 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length");
751 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!");
752 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length");
753 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value.");
754 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width");
755 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length");
756 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string");
757 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string");
758 }
759 #endif
760 #endif
761
TEST(APIntTest,mul_clear)762 TEST(APIntTest, mul_clear) {
763 APInt ValA(65, -1ULL);
764 APInt ValB(65, 4);
765 APInt ValC(65, 0);
766 ValC = ValA * ValB;
767 ValA *= ValB;
768 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
769 }
770
TEST(APIntTest,Rotate)771 TEST(APIntTest, Rotate) {
772 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0));
773 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1));
774 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2));
775 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4));
776 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8));
777
778 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0));
779 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1));
780 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2));
781 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4));
782 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8));
783
784 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0));
785 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1));
786 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2));
787 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4));
788 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8));
789
790 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0));
791 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1));
792 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2));
793 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4));
794 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8));
795
796 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16);
797 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16);
798 EXPECT_EQ(Rot, Big.rotr(144));
799 }
800
TEST(APIntTest,Splat)801 TEST(APIntTest, Splat) {
802 APInt ValA(8, 0x01);
803 EXPECT_EQ(ValA, APInt::getSplat(8, ValA));
804 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA));
805
806 APInt ValB(3, 5);
807 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB));
808 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB));
809 }
810
TEST(APIntTest,tcDecrement)811 TEST(APIntTest, tcDecrement) {
812 // Test single word decrement.
813
814 // No out borrow.
815 {
816 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1);
817 integerPart carry = APInt::tcDecrement(&singleWord, 1);
818 EXPECT_EQ(carry, integerPart(0));
819 EXPECT_EQ(singleWord, ~integerPart(0) >> 1);
820 }
821
822 // With out borrow.
823 {
824 integerPart singleWord = 0;
825 integerPart carry = APInt::tcDecrement(&singleWord, 1);
826 EXPECT_EQ(carry, integerPart(1));
827 EXPECT_EQ(singleWord, ~integerPart(0));
828 }
829
830 // Test multiword decrement.
831
832 // No across word borrow, no out borrow.
833 {
834 integerPart test[4] = {0x1, 0x1, 0x1, 0x1};
835 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1};
836 APInt::tcDecrement(test, 4);
837 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
838 }
839
840 // 1 across word borrow, no out borrow.
841 {
842 integerPart test[4] = {0x0, 0xF, 0x1, 0x1};
843 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1};
844 integerPart carry = APInt::tcDecrement(test, 4);
845 EXPECT_EQ(carry, integerPart(0));
846 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
847 }
848
849 // 2 across word borrow, no out borrow.
850 {
851 integerPart test[4] = {0x0, 0x0, 0xC, 0x1};
852 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1};
853 integerPart carry = APInt::tcDecrement(test, 4);
854 EXPECT_EQ(carry, integerPart(0));
855 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
856 }
857
858 // 3 across word borrow, no out borrow.
859 {
860 integerPart test[4] = {0x0, 0x0, 0x0, 0x1};
861 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0};
862 integerPart carry = APInt::tcDecrement(test, 4);
863 EXPECT_EQ(carry, integerPart(0));
864 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
865 }
866
867 // 3 across word borrow, with out borrow.
868 {
869 integerPart test[4] = {0x0, 0x0, 0x0, 0x0};
870 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)};
871 integerPart carry = APInt::tcDecrement(test, 4);
872 EXPECT_EQ(carry, integerPart(1));
873 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
874 }
875 }
876
TEST(APIntTest,arrayAccess)877 TEST(APIntTest, arrayAccess) {
878 // Single word check.
879 uint64_t E1 = 0x2CA7F46BF6569915ULL;
880 APInt A1(64, E1);
881 for (unsigned i = 0, e = 64; i < e; ++i) {
882 EXPECT_EQ(bool(E1 & (1ULL << i)),
883 A1[i]);
884 }
885
886 // Multiword check.
887 integerPart E2[4] = {
888 0xEB6EB136591CBA21ULL,
889 0x7B9358BD6A33F10AULL,
890 0x7E7FFA5EADD8846ULL,
891 0x305F341CA00B613DULL
892 };
893 APInt A2(integerPartWidth*4, E2);
894 for (unsigned i = 0; i < 4; ++i) {
895 for (unsigned j = 0; j < integerPartWidth; ++j) {
896 EXPECT_EQ(bool(E2[i] & (1ULL << j)),
897 A2[i*integerPartWidth + j]);
898 }
899 }
900 }
901
TEST(APIntTest,LargeAPIntConstruction)902 TEST(APIntTest, LargeAPIntConstruction) {
903 // Check that we can properly construct very large APInt. It is very
904 // unlikely that people will ever do this, but it is a legal input,
905 // so we should not crash on it.
906 APInt A9(UINT32_MAX, 0);
907 EXPECT_FALSE(A9.getBoolValue());
908 }
909
TEST(APIntTest,nearestLogBase2)910 TEST(APIntTest, nearestLogBase2) {
911 // Single word check.
912
913 // Test round up.
914 uint64_t I1 = 0x1800001;
915 APInt A1(64, I1);
916 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2());
917
918 // Test round down.
919 uint64_t I2 = 0x1000011;
920 APInt A2(64, I2);
921 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2());
922
923 // Test ties round up.
924 uint64_t I3 = 0x1800000;
925 APInt A3(64, I3);
926 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2());
927
928 // Multiple word check.
929
930 // Test round up.
931 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0};
932 APInt A4(integerPartWidth*4, I4);
933 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2());
934
935 // Test round down.
936 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0};
937 APInt A5(integerPartWidth*4, I5);
938 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2());
939
940 // Test ties round up.
941 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18};
942 APInt A6(integerPartWidth*4, I6);
943 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2());
944
945 // Test BitWidth == 1 special cases.
946 APInt A7(1, 1);
947 EXPECT_EQ(A7.nearestLogBase2(), 0ULL);
948 APInt A8(1, 0);
949 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX);
950
951 // Test the zero case when we have a bit width large enough such
952 // that the bit width is larger than UINT32_MAX-1.
953 APInt A9(UINT32_MAX, 0);
954 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX);
955 }
956
TEST(APIntTest,IsSplat)957 TEST(APIntTest, IsSplat) {
958 APInt A(32, 0x01010101);
959 EXPECT_FALSE(A.isSplat(1));
960 EXPECT_FALSE(A.isSplat(2));
961 EXPECT_FALSE(A.isSplat(4));
962 EXPECT_TRUE(A.isSplat(8));
963 EXPECT_TRUE(A.isSplat(16));
964 EXPECT_TRUE(A.isSplat(32));
965
966 APInt B(24, 0xAAAAAA);
967 EXPECT_FALSE(B.isSplat(1));
968 EXPECT_TRUE(B.isSplat(2));
969 EXPECT_TRUE(B.isSplat(4));
970 EXPECT_TRUE(B.isSplat(8));
971 EXPECT_TRUE(B.isSplat(24));
972
973 APInt C(24, 0xABAAAB);
974 EXPECT_FALSE(C.isSplat(1));
975 EXPECT_FALSE(C.isSplat(2));
976 EXPECT_FALSE(C.isSplat(4));
977 EXPECT_FALSE(C.isSplat(8));
978 EXPECT_TRUE(C.isSplat(24));
979
980 APInt D(32, 0xABBAABBA);
981 EXPECT_FALSE(D.isSplat(1));
982 EXPECT_FALSE(D.isSplat(2));
983 EXPECT_FALSE(D.isSplat(4));
984 EXPECT_FALSE(D.isSplat(8));
985 EXPECT_TRUE(D.isSplat(16));
986 EXPECT_TRUE(D.isSplat(32));
987
988 APInt E(32, 0);
989 EXPECT_TRUE(E.isSplat(1));
990 EXPECT_TRUE(E.isSplat(2));
991 EXPECT_TRUE(E.isSplat(4));
992 EXPECT_TRUE(E.isSplat(8));
993 EXPECT_TRUE(E.isSplat(16));
994 EXPECT_TRUE(E.isSplat(32));
995 }
996
997 #if defined(__clang__)
998 // Disable the pragma warning from versions of Clang without -Wself-move
999 #pragma clang diagnostic push
1000 #pragma clang diagnostic ignored "-Wunknown-pragmas"
1001 // Disable the warning that triggers on exactly what is being tested.
1002 #pragma clang diagnostic push
1003 #pragma clang diagnostic ignored "-Wself-move"
1004 #endif
TEST(APIntTest,SelfMoveAssignment)1005 TEST(APIntTest, SelfMoveAssignment) {
1006 APInt X(32, 0xdeadbeef);
1007 X = std::move(X);
1008 EXPECT_EQ(32u, X.getBitWidth());
1009 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue());
1010
1011 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL};
1012 APInt Y(128, Bits);
1013 Y = std::move(Y);
1014 EXPECT_EQ(128u, Y.getBitWidth());
1015 EXPECT_EQ(~0ULL, Y.getLimitedValue());
1016 const uint64_t *Raw = Y.getRawData();
1017 EXPECT_EQ(2u, Y.getNumWords());
1018 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]);
1019 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]);
1020 }
1021 #if defined(__clang__)
1022 #pragma clang diagnostic pop
1023 #pragma clang diagnostic pop
1024 #endif
1025 }
1026