1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "llvm/ADT/APInt.h"
10 #include "llvm/ADT/ArrayRef.h"
11 #include "llvm/ADT/SmallString.h"
12 #include "llvm/ADT/Twine.h"
13 #include "gtest/gtest.h"
14 #include <array>
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,i64_ArithmeticRightShiftNegative)35 TEST(APIntTest, i64_ArithmeticRightShiftNegative) {
36 const APInt neg_one(64, static_cast<uint64_t>(-1), true);
37 EXPECT_EQ(neg_one, neg_one.ashr(7));
38 }
39
TEST(APIntTest,i128_NegativeCount)40 TEST(APIntTest, i128_NegativeCount) {
41 APInt Minus3(128, static_cast<uint64_t>(-3), true);
42 EXPECT_EQ(126u, Minus3.countLeadingOnes());
43 EXPECT_EQ(-3, Minus3.getSExtValue());
44
45 APInt Minus1(128, static_cast<uint64_t>(-1), true);
46 EXPECT_EQ(0u, Minus1.countLeadingZeros());
47 EXPECT_EQ(128u, Minus1.countLeadingOnes());
48 EXPECT_EQ(128u, Minus1.getActiveBits());
49 EXPECT_EQ(0u, Minus1.countTrailingZeros());
50 EXPECT_EQ(128u, Minus1.countTrailingOnes());
51 EXPECT_EQ(128u, Minus1.countPopulation());
52 EXPECT_EQ(-1, Minus1.getSExtValue());
53 }
54
TEST(APIntTest,i33_Count)55 TEST(APIntTest, i33_Count) {
56 APInt i33minus2(33, static_cast<uint64_t>(-2), true);
57 EXPECT_EQ(0u, i33minus2.countLeadingZeros());
58 EXPECT_EQ(32u, i33minus2.countLeadingOnes());
59 EXPECT_EQ(33u, i33minus2.getActiveBits());
60 EXPECT_EQ(1u, i33minus2.countTrailingZeros());
61 EXPECT_EQ(32u, i33minus2.countPopulation());
62 EXPECT_EQ(-2, i33minus2.getSExtValue());
63 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
64 }
65
TEST(APIntTest,i61_Count)66 TEST(APIntTest, i61_Count) {
67 APInt i61(61, 1 << 15);
68 EXPECT_EQ(45u, i61.countLeadingZeros());
69 EXPECT_EQ(0u, i61.countLeadingOnes());
70 EXPECT_EQ(16u, i61.getActiveBits());
71 EXPECT_EQ(15u, i61.countTrailingZeros());
72 EXPECT_EQ(1u, i61.countPopulation());
73 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue());
74 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue());
75
76 i61.setBits(8, 19);
77 EXPECT_EQ(42u, i61.countLeadingZeros());
78 EXPECT_EQ(0u, i61.countLeadingOnes());
79 EXPECT_EQ(19u, i61.getActiveBits());
80 EXPECT_EQ(8u, i61.countTrailingZeros());
81 EXPECT_EQ(11u, i61.countPopulation());
82 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue());
83 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue());
84 }
85
TEST(APIntTest,i65_Count)86 TEST(APIntTest, i65_Count) {
87 APInt i65(65, 0, true);
88 EXPECT_EQ(65u, i65.countLeadingZeros());
89 EXPECT_EQ(0u, i65.countLeadingOnes());
90 EXPECT_EQ(0u, i65.getActiveBits());
91 EXPECT_EQ(1u, i65.getActiveWords());
92 EXPECT_EQ(65u, i65.countTrailingZeros());
93 EXPECT_EQ(0u, i65.countPopulation());
94
95 APInt i65minus(65, 0, true);
96 i65minus.setBit(64);
97 EXPECT_EQ(0u, i65minus.countLeadingZeros());
98 EXPECT_EQ(1u, i65minus.countLeadingOnes());
99 EXPECT_EQ(65u, i65minus.getActiveBits());
100 EXPECT_EQ(64u, i65minus.countTrailingZeros());
101 EXPECT_EQ(1u, i65minus.countPopulation());
102 }
103
TEST(APIntTest,i128_PositiveCount)104 TEST(APIntTest, i128_PositiveCount) {
105 APInt u128max = APInt::getAllOnesValue(128);
106 EXPECT_EQ(128u, u128max.countLeadingOnes());
107 EXPECT_EQ(0u, u128max.countLeadingZeros());
108 EXPECT_EQ(128u, u128max.getActiveBits());
109 EXPECT_EQ(0u, u128max.countTrailingZeros());
110 EXPECT_EQ(128u, u128max.countTrailingOnes());
111 EXPECT_EQ(128u, u128max.countPopulation());
112
113 APInt u64max(128, static_cast<uint64_t>(-1), false);
114 EXPECT_EQ(64u, u64max.countLeadingZeros());
115 EXPECT_EQ(0u, u64max.countLeadingOnes());
116 EXPECT_EQ(64u, u64max.getActiveBits());
117 EXPECT_EQ(0u, u64max.countTrailingZeros());
118 EXPECT_EQ(64u, u64max.countTrailingOnes());
119 EXPECT_EQ(64u, u64max.countPopulation());
120 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
121
122 APInt zero(128, 0, true);
123 EXPECT_EQ(128u, zero.countLeadingZeros());
124 EXPECT_EQ(0u, zero.countLeadingOnes());
125 EXPECT_EQ(0u, zero.getActiveBits());
126 EXPECT_EQ(128u, zero.countTrailingZeros());
127 EXPECT_EQ(0u, zero.countTrailingOnes());
128 EXPECT_EQ(0u, zero.countPopulation());
129 EXPECT_EQ(0u, zero.getSExtValue());
130 EXPECT_EQ(0u, zero.getZExtValue());
131
132 APInt one(128, 1, true);
133 EXPECT_EQ(127u, one.countLeadingZeros());
134 EXPECT_EQ(0u, one.countLeadingOnes());
135 EXPECT_EQ(1u, one.getActiveBits());
136 EXPECT_EQ(0u, one.countTrailingZeros());
137 EXPECT_EQ(1u, one.countTrailingOnes());
138 EXPECT_EQ(1u, one.countPopulation());
139 EXPECT_EQ(1, one.getSExtValue());
140 EXPECT_EQ(1u, one.getZExtValue());
141
142 APInt s128(128, 2, true);
143 EXPECT_EQ(126u, s128.countLeadingZeros());
144 EXPECT_EQ(0u, s128.countLeadingOnes());
145 EXPECT_EQ(2u, s128.getActiveBits());
146 EXPECT_EQ(1u, s128.countTrailingZeros());
147 EXPECT_EQ(0u, s128.countTrailingOnes());
148 EXPECT_EQ(1u, s128.countPopulation());
149 EXPECT_EQ(2, s128.getSExtValue());
150 EXPECT_EQ(2u, s128.getZExtValue());
151
152 // NOP Test
153 s128.setBits(42, 42);
154 EXPECT_EQ(126u, s128.countLeadingZeros());
155 EXPECT_EQ(0u, s128.countLeadingOnes());
156 EXPECT_EQ(2u, s128.getActiveBits());
157 EXPECT_EQ(1u, s128.countTrailingZeros());
158 EXPECT_EQ(0u, s128.countTrailingOnes());
159 EXPECT_EQ(1u, s128.countPopulation());
160 EXPECT_EQ(2, s128.getSExtValue());
161 EXPECT_EQ(2u, s128.getZExtValue());
162
163 s128.setBits(3, 32);
164 EXPECT_EQ(96u, s128.countLeadingZeros());
165 EXPECT_EQ(0u, s128.countLeadingOnes());
166 EXPECT_EQ(32u, s128.getActiveBits());
167 EXPECT_EQ(33u, s128.getMinSignedBits());
168 EXPECT_EQ(1u, s128.countTrailingZeros());
169 EXPECT_EQ(0u, s128.countTrailingOnes());
170 EXPECT_EQ(30u, s128.countPopulation());
171 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue());
172
173 s128.setBits(62, 128);
174 EXPECT_EQ(0u, s128.countLeadingZeros());
175 EXPECT_EQ(66u, s128.countLeadingOnes());
176 EXPECT_EQ(128u, s128.getActiveBits());
177 EXPECT_EQ(63u, s128.getMinSignedBits());
178 EXPECT_EQ(1u, s128.countTrailingZeros());
179 EXPECT_EQ(0u, s128.countTrailingOnes());
180 EXPECT_EQ(96u, s128.countPopulation());
181 EXPECT_EQ(static_cast<int64_t>((3ull << 62) |
182 static_cast<uint32_t>((~0u << 3) | 2)),
183 s128.getSExtValue());
184 }
185
TEST(APIntTest,i256)186 TEST(APIntTest, i256) {
187 APInt s256(256, 15, true);
188 EXPECT_EQ(252u, s256.countLeadingZeros());
189 EXPECT_EQ(0u, s256.countLeadingOnes());
190 EXPECT_EQ(4u, s256.getActiveBits());
191 EXPECT_EQ(0u, s256.countTrailingZeros());
192 EXPECT_EQ(4u, s256.countTrailingOnes());
193 EXPECT_EQ(4u, s256.countPopulation());
194 EXPECT_EQ(15, s256.getSExtValue());
195 EXPECT_EQ(15u, s256.getZExtValue());
196
197 s256.setBits(62, 66);
198 EXPECT_EQ(190u, s256.countLeadingZeros());
199 EXPECT_EQ(0u, s256.countLeadingOnes());
200 EXPECT_EQ(66u, s256.getActiveBits());
201 EXPECT_EQ(67u, s256.getMinSignedBits());
202 EXPECT_EQ(0u, s256.countTrailingZeros());
203 EXPECT_EQ(4u, s256.countTrailingOnes());
204 EXPECT_EQ(8u, s256.countPopulation());
205
206 s256.setBits(60, 256);
207 EXPECT_EQ(0u, s256.countLeadingZeros());
208 EXPECT_EQ(196u, s256.countLeadingOnes());
209 EXPECT_EQ(256u, s256.getActiveBits());
210 EXPECT_EQ(61u, s256.getMinSignedBits());
211 EXPECT_EQ(0u, s256.countTrailingZeros());
212 EXPECT_EQ(4u, s256.countTrailingOnes());
213 EXPECT_EQ(200u, s256.countPopulation());
214 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue());
215 }
216
TEST(APIntTest,i1)217 TEST(APIntTest, i1) {
218 const APInt neg_two(1, static_cast<uint64_t>(-2), true);
219 const APInt neg_one(1, static_cast<uint64_t>(-1), true);
220 const APInt zero(1, 0);
221 const APInt one(1, 1);
222 const APInt two(1, 2);
223
224 EXPECT_EQ(0, neg_two.getSExtValue());
225 EXPECT_EQ(-1, neg_one.getSExtValue());
226 EXPECT_EQ(1u, neg_one.getZExtValue());
227 EXPECT_EQ(0u, zero.getZExtValue());
228 EXPECT_EQ(-1, one.getSExtValue());
229 EXPECT_EQ(1u, one.getZExtValue());
230 EXPECT_EQ(0u, two.getZExtValue());
231 EXPECT_EQ(0, two.getSExtValue());
232
233 // Basic equalities for 1-bit values.
234 EXPECT_EQ(zero, two);
235 EXPECT_EQ(zero, neg_two);
236 EXPECT_EQ(one, neg_one);
237 EXPECT_EQ(two, neg_two);
238
239 // Min/max signed values.
240 EXPECT_TRUE(zero.isMaxSignedValue());
241 EXPECT_FALSE(one.isMaxSignedValue());
242 EXPECT_FALSE(zero.isMinSignedValue());
243 EXPECT_TRUE(one.isMinSignedValue());
244
245 // Additions.
246 EXPECT_EQ(two, one + one);
247 EXPECT_EQ(zero, neg_one + one);
248 EXPECT_EQ(neg_two, neg_one + neg_one);
249
250 // Subtractions.
251 EXPECT_EQ(neg_two, neg_one - one);
252 EXPECT_EQ(two, one - neg_one);
253 EXPECT_EQ(zero, one - one);
254
255 // And
256 EXPECT_EQ(zero, zero & zero);
257 EXPECT_EQ(zero, one & zero);
258 EXPECT_EQ(zero, zero & one);
259 EXPECT_EQ(one, one & one);
260 EXPECT_EQ(zero, zero & zero);
261 EXPECT_EQ(zero, neg_one & zero);
262 EXPECT_EQ(zero, zero & neg_one);
263 EXPECT_EQ(neg_one, neg_one & neg_one);
264
265 // Or
266 EXPECT_EQ(zero, zero | zero);
267 EXPECT_EQ(one, one | zero);
268 EXPECT_EQ(one, zero | one);
269 EXPECT_EQ(one, one | one);
270 EXPECT_EQ(zero, zero | zero);
271 EXPECT_EQ(neg_one, neg_one | zero);
272 EXPECT_EQ(neg_one, zero | neg_one);
273 EXPECT_EQ(neg_one, neg_one | neg_one);
274
275 // Xor
276 EXPECT_EQ(zero, zero ^ zero);
277 EXPECT_EQ(one, one ^ zero);
278 EXPECT_EQ(one, zero ^ one);
279 EXPECT_EQ(zero, one ^ one);
280 EXPECT_EQ(zero, zero ^ zero);
281 EXPECT_EQ(neg_one, neg_one ^ zero);
282 EXPECT_EQ(neg_one, zero ^ neg_one);
283 EXPECT_EQ(zero, neg_one ^ neg_one);
284
285 // Shifts.
286 EXPECT_EQ(zero, one << one);
287 EXPECT_EQ(one, one << zero);
288 EXPECT_EQ(zero, one.shl(1));
289 EXPECT_EQ(one, one.shl(0));
290 EXPECT_EQ(zero, one.lshr(1));
291 EXPECT_EQ(one, one.ashr(1));
292
293 // Rotates.
294 EXPECT_EQ(one, one.rotl(0));
295 EXPECT_EQ(one, one.rotl(1));
296 EXPECT_EQ(one, one.rotr(0));
297 EXPECT_EQ(one, one.rotr(1));
298
299 // Multiplies.
300 EXPECT_EQ(neg_one, neg_one * one);
301 EXPECT_EQ(neg_one, one * neg_one);
302 EXPECT_EQ(one, neg_one * neg_one);
303 EXPECT_EQ(one, one * one);
304
305 // Divides.
306 EXPECT_EQ(neg_one, one.sdiv(neg_one));
307 EXPECT_EQ(neg_one, neg_one.sdiv(one));
308 EXPECT_EQ(one, neg_one.sdiv(neg_one));
309 EXPECT_EQ(one, one.sdiv(one));
310
311 EXPECT_EQ(neg_one, one.udiv(neg_one));
312 EXPECT_EQ(neg_one, neg_one.udiv(one));
313 EXPECT_EQ(one, neg_one.udiv(neg_one));
314 EXPECT_EQ(one, one.udiv(one));
315
316 // Remainders.
317 EXPECT_EQ(zero, neg_one.srem(one));
318 EXPECT_EQ(zero, neg_one.urem(one));
319 EXPECT_EQ(zero, one.srem(neg_one));
320
321 // sdivrem
322 {
323 APInt q(8, 0);
324 APInt r(8, 0);
325 APInt one(8, 1);
326 APInt two(8, 2);
327 APInt nine(8, 9);
328 APInt four(8, 4);
329
330 EXPECT_EQ(nine.srem(two), one);
331 EXPECT_EQ(nine.srem(-two), one);
332 EXPECT_EQ((-nine).srem(two), -one);
333 EXPECT_EQ((-nine).srem(-two), -one);
334
335 APInt::sdivrem(nine, two, q, r);
336 EXPECT_EQ(four, q);
337 EXPECT_EQ(one, r);
338 APInt::sdivrem(-nine, two, q, r);
339 EXPECT_EQ(-four, q);
340 EXPECT_EQ(-one, r);
341 APInt::sdivrem(nine, -two, q, r);
342 EXPECT_EQ(-four, q);
343 EXPECT_EQ(one, r);
344 APInt::sdivrem(-nine, -two, q, r);
345 EXPECT_EQ(four, q);
346 EXPECT_EQ(-one, r);
347 }
348 }
349
TEST(APIntTest,compare)350 TEST(APIntTest, compare) {
351 std::array<APInt, 5> testVals{{
352 APInt{16, 2},
353 APInt{16, 1},
354 APInt{16, 0},
355 APInt{16, (uint64_t)-1, true},
356 APInt{16, (uint64_t)-2, true},
357 }};
358
359 for (auto &arg1 : testVals)
360 for (auto &arg2 : testVals) {
361 auto uv1 = arg1.getZExtValue();
362 auto uv2 = arg2.getZExtValue();
363 auto sv1 = arg1.getSExtValue();
364 auto sv2 = arg2.getSExtValue();
365
366 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2));
367 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2));
368 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2));
369 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2));
370
371 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2));
372 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2));
373 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2));
374 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2));
375
376 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2));
377 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2));
378 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2));
379 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2));
380
381 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2));
382 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2));
383 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2));
384 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2));
385 }
386 }
387
TEST(APIntTest,compareWithRawIntegers)388 TEST(APIntTest, compareWithRawIntegers) {
389 EXPECT_TRUE(!APInt(8, 1).uge(256));
390 EXPECT_TRUE(!APInt(8, 1).ugt(256));
391 EXPECT_TRUE( APInt(8, 1).ule(256));
392 EXPECT_TRUE( APInt(8, 1).ult(256));
393 EXPECT_TRUE(!APInt(8, 1).sge(256));
394 EXPECT_TRUE(!APInt(8, 1).sgt(256));
395 EXPECT_TRUE( APInt(8, 1).sle(256));
396 EXPECT_TRUE( APInt(8, 1).slt(256));
397 EXPECT_TRUE(!(APInt(8, 0) == 256));
398 EXPECT_TRUE( APInt(8, 0) != 256);
399 EXPECT_TRUE(!(APInt(8, 1) == 256));
400 EXPECT_TRUE( APInt(8, 1) != 256);
401
402 auto uint64max = UINT64_MAX;
403 auto int64max = INT64_MAX;
404 auto int64min = INT64_MIN;
405
406 auto u64 = APInt{128, uint64max};
407 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true};
408 auto big = u64 + 1;
409
410 EXPECT_TRUE( u64.uge(uint64max));
411 EXPECT_TRUE(!u64.ugt(uint64max));
412 EXPECT_TRUE( u64.ule(uint64max));
413 EXPECT_TRUE(!u64.ult(uint64max));
414 EXPECT_TRUE( u64.sge(int64max));
415 EXPECT_TRUE( u64.sgt(int64max));
416 EXPECT_TRUE(!u64.sle(int64max));
417 EXPECT_TRUE(!u64.slt(int64max));
418 EXPECT_TRUE( u64.sge(int64min));
419 EXPECT_TRUE( u64.sgt(int64min));
420 EXPECT_TRUE(!u64.sle(int64min));
421 EXPECT_TRUE(!u64.slt(int64min));
422
423 EXPECT_TRUE(u64 == uint64max);
424 EXPECT_TRUE(u64 != int64max);
425 EXPECT_TRUE(u64 != int64min);
426
427 EXPECT_TRUE(!s64.uge(uint64max));
428 EXPECT_TRUE(!s64.ugt(uint64max));
429 EXPECT_TRUE( s64.ule(uint64max));
430 EXPECT_TRUE( s64.ult(uint64max));
431 EXPECT_TRUE( s64.sge(int64max));
432 EXPECT_TRUE(!s64.sgt(int64max));
433 EXPECT_TRUE( s64.sle(int64max));
434 EXPECT_TRUE(!s64.slt(int64max));
435 EXPECT_TRUE( s64.sge(int64min));
436 EXPECT_TRUE( s64.sgt(int64min));
437 EXPECT_TRUE(!s64.sle(int64min));
438 EXPECT_TRUE(!s64.slt(int64min));
439
440 EXPECT_TRUE(s64 != uint64max);
441 EXPECT_TRUE(s64 == int64max);
442 EXPECT_TRUE(s64 != int64min);
443
444 EXPECT_TRUE( big.uge(uint64max));
445 EXPECT_TRUE( big.ugt(uint64max));
446 EXPECT_TRUE(!big.ule(uint64max));
447 EXPECT_TRUE(!big.ult(uint64max));
448 EXPECT_TRUE( big.sge(int64max));
449 EXPECT_TRUE( big.sgt(int64max));
450 EXPECT_TRUE(!big.sle(int64max));
451 EXPECT_TRUE(!big.slt(int64max));
452 EXPECT_TRUE( big.sge(int64min));
453 EXPECT_TRUE( big.sgt(int64min));
454 EXPECT_TRUE(!big.sle(int64min));
455 EXPECT_TRUE(!big.slt(int64min));
456
457 EXPECT_TRUE(big != uint64max);
458 EXPECT_TRUE(big != int64max);
459 EXPECT_TRUE(big != int64min);
460 }
461
TEST(APIntTest,compareWithInt64Min)462 TEST(APIntTest, compareWithInt64Min) {
463 int64_t edge = INT64_MIN;
464 int64_t edgeP1 = edge + 1;
465 int64_t edgeM1 = INT64_MAX;
466 auto a = APInt{64, static_cast<uint64_t>(edge), true};
467
468 EXPECT_TRUE(!a.slt(edge));
469 EXPECT_TRUE( a.sle(edge));
470 EXPECT_TRUE(!a.sgt(edge));
471 EXPECT_TRUE( a.sge(edge));
472 EXPECT_TRUE( a.slt(edgeP1));
473 EXPECT_TRUE( a.sle(edgeP1));
474 EXPECT_TRUE(!a.sgt(edgeP1));
475 EXPECT_TRUE(!a.sge(edgeP1));
476 EXPECT_TRUE( a.slt(edgeM1));
477 EXPECT_TRUE( a.sle(edgeM1));
478 EXPECT_TRUE(!a.sgt(edgeM1));
479 EXPECT_TRUE(!a.sge(edgeM1));
480 }
481
TEST(APIntTest,compareWithHalfInt64Max)482 TEST(APIntTest, compareWithHalfInt64Max) {
483 uint64_t edge = 0x4000000000000000;
484 uint64_t edgeP1 = edge + 1;
485 uint64_t edgeM1 = edge - 1;
486 auto a = APInt{64, edge};
487
488 EXPECT_TRUE(!a.ult(edge));
489 EXPECT_TRUE( a.ule(edge));
490 EXPECT_TRUE(!a.ugt(edge));
491 EXPECT_TRUE( a.uge(edge));
492 EXPECT_TRUE( a.ult(edgeP1));
493 EXPECT_TRUE( a.ule(edgeP1));
494 EXPECT_TRUE(!a.ugt(edgeP1));
495 EXPECT_TRUE(!a.uge(edgeP1));
496 EXPECT_TRUE(!a.ult(edgeM1));
497 EXPECT_TRUE(!a.ule(edgeM1));
498 EXPECT_TRUE( a.ugt(edgeM1));
499 EXPECT_TRUE( a.uge(edgeM1));
500
501 EXPECT_TRUE(!a.slt(edge));
502 EXPECT_TRUE( a.sle(edge));
503 EXPECT_TRUE(!a.sgt(edge));
504 EXPECT_TRUE( a.sge(edge));
505 EXPECT_TRUE( a.slt(edgeP1));
506 EXPECT_TRUE( a.sle(edgeP1));
507 EXPECT_TRUE(!a.sgt(edgeP1));
508 EXPECT_TRUE(!a.sge(edgeP1));
509 EXPECT_TRUE(!a.slt(edgeM1));
510 EXPECT_TRUE(!a.sle(edgeM1));
511 EXPECT_TRUE( a.sgt(edgeM1));
512 EXPECT_TRUE( a.sge(edgeM1));
513 }
514
TEST(APIntTest,compareLargeIntegers)515 TEST(APIntTest, compareLargeIntegers) {
516 // Make sure all the combinations of signed comparisons work with big ints.
517 auto One = APInt{128, static_cast<uint64_t>(1), true};
518 auto Two = APInt{128, static_cast<uint64_t>(2), true};
519 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true};
520 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true};
521
522 EXPECT_TRUE(!One.slt(One));
523 EXPECT_TRUE(!Two.slt(One));
524 EXPECT_TRUE(MinusOne.slt(One));
525 EXPECT_TRUE(MinusTwo.slt(One));
526
527 EXPECT_TRUE(One.slt(Two));
528 EXPECT_TRUE(!Two.slt(Two));
529 EXPECT_TRUE(MinusOne.slt(Two));
530 EXPECT_TRUE(MinusTwo.slt(Two));
531
532 EXPECT_TRUE(!One.slt(MinusOne));
533 EXPECT_TRUE(!Two.slt(MinusOne));
534 EXPECT_TRUE(!MinusOne.slt(MinusOne));
535 EXPECT_TRUE(MinusTwo.slt(MinusOne));
536
537 EXPECT_TRUE(!One.slt(MinusTwo));
538 EXPECT_TRUE(!Two.slt(MinusTwo));
539 EXPECT_TRUE(!MinusOne.slt(MinusTwo));
540 EXPECT_TRUE(!MinusTwo.slt(MinusTwo));
541 }
542
TEST(APIntTest,binaryOpsWithRawIntegers)543 TEST(APIntTest, binaryOpsWithRawIntegers) {
544 // Single word check.
545 uint64_t E1 = 0x2CA7F46BF6569915ULL;
546 APInt A1(64, E1);
547
548 EXPECT_EQ(A1 & E1, E1);
549 EXPECT_EQ(A1 & 0, 0);
550 EXPECT_EQ(A1 & 1, 1);
551 EXPECT_EQ(A1 & 5, 5);
552 EXPECT_EQ(A1 & UINT64_MAX, E1);
553
554 EXPECT_EQ(A1 | E1, E1);
555 EXPECT_EQ(A1 | 0, E1);
556 EXPECT_EQ(A1 | 1, E1);
557 EXPECT_EQ(A1 | 2, E1 | 2);
558 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX);
559
560 EXPECT_EQ(A1 ^ E1, 0);
561 EXPECT_EQ(A1 ^ 0, E1);
562 EXPECT_EQ(A1 ^ 1, E1 ^ 1);
563 EXPECT_EQ(A1 ^ 7, E1 ^ 7);
564 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1);
565
566 // Multiword check.
567 uint64_t N = 0xEB6EB136591CBA21ULL;
568 APInt::WordType E2[4] = {
569 N,
570 0x7B9358BD6A33F10AULL,
571 0x7E7FFA5EADD8846ULL,
572 0x305F341CA00B613DULL
573 };
574 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2);
575
576 EXPECT_EQ(A2 & N, N);
577 EXPECT_EQ(A2 & 0, 0);
578 EXPECT_EQ(A2 & 1, 1);
579 EXPECT_EQ(A2 & 5, 1);
580 EXPECT_EQ(A2 & UINT64_MAX, N);
581
582 EXPECT_EQ(A2 | N, A2);
583 EXPECT_EQ(A2 | 0, A2);
584 EXPECT_EQ(A2 | 1, A2);
585 EXPECT_EQ(A2 | 2, A2 + 2);
586 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX);
587
588 EXPECT_EQ(A2 ^ N, A2 - N);
589 EXPECT_EQ(A2 ^ 0, A2);
590 EXPECT_EQ(A2 ^ 1, A2 - 1);
591 EXPECT_EQ(A2 ^ 7, A2 + 5);
592 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N);
593 }
594
TEST(APIntTest,rvalue_arithmetic)595 TEST(APIntTest, rvalue_arithmetic) {
596 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub
597
598 // Lamdba to return an APInt by value, but also provide the raw value of the
599 // allocated data.
600 auto getRValue = [](const char *HexString, uint64_t const *&RawData) {
601 APInt V(129, HexString, 16);
602 RawData = V.getRawData();
603 return V;
604 };
605
606 APInt One(129, "1", 16);
607 APInt Two(129, "2", 16);
608 APInt Three(129, "3", 16);
609 APInt MinusOne = -One;
610
611 const uint64_t *RawDataL = nullptr;
612 const uint64_t *RawDataR = nullptr;
613
614 {
615 // 1 + 1 = 2
616 APInt AddLL = One + One;
617 EXPECT_EQ(AddLL, Two);
618
619 APInt AddLR = One + getRValue("1", RawDataR);
620 EXPECT_EQ(AddLR, Two);
621 EXPECT_EQ(AddLR.getRawData(), RawDataR);
622
623 APInt AddRL = getRValue("1", RawDataL) + One;
624 EXPECT_EQ(AddRL, Two);
625 EXPECT_EQ(AddRL.getRawData(), RawDataL);
626
627 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR);
628 EXPECT_EQ(AddRR, Two);
629 EXPECT_EQ(AddRR.getRawData(), RawDataR);
630
631 // LValue's and constants
632 APInt AddLK = One + 1;
633 EXPECT_EQ(AddLK, Two);
634
635 APInt AddKL = 1 + One;
636 EXPECT_EQ(AddKL, Two);
637
638 // RValue's and constants
639 APInt AddRK = getRValue("1", RawDataL) + 1;
640 EXPECT_EQ(AddRK, Two);
641 EXPECT_EQ(AddRK.getRawData(), RawDataL);
642
643 APInt AddKR = 1 + getRValue("1", RawDataR);
644 EXPECT_EQ(AddKR, Two);
645 EXPECT_EQ(AddKR.getRawData(), RawDataR);
646 }
647
648 {
649 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001
650 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16);
651 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16);
652
653 APInt AddLL = AllOnes + Two;
654 EXPECT_EQ(AddLL, HighOneLowOne);
655
656 APInt AddLR = AllOnes + getRValue("2", RawDataR);
657 EXPECT_EQ(AddLR, HighOneLowOne);
658 EXPECT_EQ(AddLR.getRawData(), RawDataR);
659
660 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two;
661 EXPECT_EQ(AddRL, HighOneLowOne);
662 EXPECT_EQ(AddRL.getRawData(), RawDataL);
663
664 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) +
665 getRValue("2", RawDataR);
666 EXPECT_EQ(AddRR, HighOneLowOne);
667 EXPECT_EQ(AddRR.getRawData(), RawDataR);
668
669 // LValue's and constants
670 APInt AddLK = AllOnes + 2;
671 EXPECT_EQ(AddLK, HighOneLowOne);
672
673 APInt AddKL = 2 + AllOnes;
674 EXPECT_EQ(AddKL, HighOneLowOne);
675
676 // RValue's and constants
677 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2;
678 EXPECT_EQ(AddRK, HighOneLowOne);
679 EXPECT_EQ(AddRK.getRawData(), RawDataL);
680
681 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR);
682 EXPECT_EQ(AddKR, HighOneLowOne);
683 EXPECT_EQ(AddKR.getRawData(), RawDataR);
684 }
685
686 {
687 // 2 - 1 = 1
688 APInt SubLL = Two - One;
689 EXPECT_EQ(SubLL, One);
690
691 APInt SubLR = Two - getRValue("1", RawDataR);
692 EXPECT_EQ(SubLR, One);
693 EXPECT_EQ(SubLR.getRawData(), RawDataR);
694
695 APInt SubRL = getRValue("2", RawDataL) - One;
696 EXPECT_EQ(SubRL, One);
697 EXPECT_EQ(SubRL.getRawData(), RawDataL);
698
699 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR);
700 EXPECT_EQ(SubRR, One);
701 EXPECT_EQ(SubRR.getRawData(), RawDataR);
702
703 // LValue's and constants
704 APInt SubLK = Two - 1;
705 EXPECT_EQ(SubLK, One);
706
707 APInt SubKL = 2 - One;
708 EXPECT_EQ(SubKL, One);
709
710 // RValue's and constants
711 APInt SubRK = getRValue("2", RawDataL) - 1;
712 EXPECT_EQ(SubRK, One);
713 EXPECT_EQ(SubRK.getRawData(), RawDataL);
714
715 APInt SubKR = 2 - getRValue("1", RawDataR);
716 EXPECT_EQ(SubKR, One);
717 EXPECT_EQ(SubKR.getRawData(), RawDataR);
718 }
719
720 {
721 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2
722 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16);
723 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16);
724
725 APInt SubLL = HighOneLowOne - AllOnes;
726 EXPECT_EQ(SubLL, Two);
727
728 APInt SubLR = HighOneLowOne -
729 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR);
730 EXPECT_EQ(SubLR, Two);
731 EXPECT_EQ(SubLR.getRawData(), RawDataR);
732
733 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) -
734 AllOnes;
735 EXPECT_EQ(SubRL, Two);
736 EXPECT_EQ(SubRL.getRawData(), RawDataL);
737
738 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) -
739 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR);
740 EXPECT_EQ(SubRR, Two);
741 EXPECT_EQ(SubRR.getRawData(), RawDataR);
742
743 // LValue's and constants
744 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF
745 APInt SubLK = HighOneLowOne - 2;
746 EXPECT_EQ(SubLK, AllOnes);
747
748 // 2 - (-1) = 3
749 APInt SubKL = 2 - MinusOne;
750 EXPECT_EQ(SubKL, Three);
751
752 // RValue's and constants
753 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF
754 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2;
755 EXPECT_EQ(SubRK, AllOnes);
756 EXPECT_EQ(SubRK.getRawData(), RawDataL);
757
758 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR);
759 EXPECT_EQ(SubKR, Three);
760 EXPECT_EQ(SubKR.getRawData(), RawDataR);
761 }
762 }
763
TEST(APIntTest,rvalue_bitwise)764 TEST(APIntTest, rvalue_bitwise) {
765 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor
766
767 // Lamdba to return an APInt by value, but also provide the raw value of the
768 // allocated data.
769 auto getRValue = [](const char *HexString, uint64_t const *&RawData) {
770 APInt V(129, HexString, 16);
771 RawData = V.getRawData();
772 return V;
773 };
774
775 APInt Ten(129, "A", 16);
776 APInt Twelve(129, "C", 16);
777
778 const uint64_t *RawDataL = nullptr;
779 const uint64_t *RawDataR = nullptr;
780
781 {
782 // 12 & 10 = 8
783 APInt AndLL = Ten & Twelve;
784 EXPECT_EQ(AndLL, 0x8);
785
786 APInt AndLR = Ten & getRValue("C", RawDataR);
787 EXPECT_EQ(AndLR, 0x8);
788 EXPECT_EQ(AndLR.getRawData(), RawDataR);
789
790 APInt AndRL = getRValue("A", RawDataL) & Twelve;
791 EXPECT_EQ(AndRL, 0x8);
792 EXPECT_EQ(AndRL.getRawData(), RawDataL);
793
794 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR);
795 EXPECT_EQ(AndRR, 0x8);
796 EXPECT_EQ(AndRR.getRawData(), RawDataR);
797
798 // LValue's and constants
799 APInt AndLK = Ten & 0xc;
800 EXPECT_EQ(AndLK, 0x8);
801
802 APInt AndKL = 0xa & Twelve;
803 EXPECT_EQ(AndKL, 0x8);
804
805 // RValue's and constants
806 APInt AndRK = getRValue("A", RawDataL) & 0xc;
807 EXPECT_EQ(AndRK, 0x8);
808 EXPECT_EQ(AndRK.getRawData(), RawDataL);
809
810 APInt AndKR = 0xa & getRValue("C", RawDataR);
811 EXPECT_EQ(AndKR, 0x8);
812 EXPECT_EQ(AndKR.getRawData(), RawDataR);
813 }
814
815 {
816 // 12 | 10 = 14
817 APInt OrLL = Ten | Twelve;
818 EXPECT_EQ(OrLL, 0xe);
819
820 APInt OrLR = Ten | getRValue("C", RawDataR);
821 EXPECT_EQ(OrLR, 0xe);
822 EXPECT_EQ(OrLR.getRawData(), RawDataR);
823
824 APInt OrRL = getRValue("A", RawDataL) | Twelve;
825 EXPECT_EQ(OrRL, 0xe);
826 EXPECT_EQ(OrRL.getRawData(), RawDataL);
827
828 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR);
829 EXPECT_EQ(OrRR, 0xe);
830 EXPECT_EQ(OrRR.getRawData(), RawDataR);
831
832 // LValue's and constants
833 APInt OrLK = Ten | 0xc;
834 EXPECT_EQ(OrLK, 0xe);
835
836 APInt OrKL = 0xa | Twelve;
837 EXPECT_EQ(OrKL, 0xe);
838
839 // RValue's and constants
840 APInt OrRK = getRValue("A", RawDataL) | 0xc;
841 EXPECT_EQ(OrRK, 0xe);
842 EXPECT_EQ(OrRK.getRawData(), RawDataL);
843
844 APInt OrKR = 0xa | getRValue("C", RawDataR);
845 EXPECT_EQ(OrKR, 0xe);
846 EXPECT_EQ(OrKR.getRawData(), RawDataR);
847 }
848
849 {
850 // 12 ^ 10 = 6
851 APInt XorLL = Ten ^ Twelve;
852 EXPECT_EQ(XorLL, 0x6);
853
854 APInt XorLR = Ten ^ getRValue("C", RawDataR);
855 EXPECT_EQ(XorLR, 0x6);
856 EXPECT_EQ(XorLR.getRawData(), RawDataR);
857
858 APInt XorRL = getRValue("A", RawDataL) ^ Twelve;
859 EXPECT_EQ(XorRL, 0x6);
860 EXPECT_EQ(XorRL.getRawData(), RawDataL);
861
862 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR);
863 EXPECT_EQ(XorRR, 0x6);
864 EXPECT_EQ(XorRR.getRawData(), RawDataR);
865
866 // LValue's and constants
867 APInt XorLK = Ten ^ 0xc;
868 EXPECT_EQ(XorLK, 0x6);
869
870 APInt XorKL = 0xa ^ Twelve;
871 EXPECT_EQ(XorKL, 0x6);
872
873 // RValue's and constants
874 APInt XorRK = getRValue("A", RawDataL) ^ 0xc;
875 EXPECT_EQ(XorRK, 0x6);
876 EXPECT_EQ(XorRK.getRawData(), RawDataL);
877
878 APInt XorKR = 0xa ^ getRValue("C", RawDataR);
879 EXPECT_EQ(XorKR, 0x6);
880 EXPECT_EQ(XorKR.getRawData(), RawDataR);
881 }
882 }
883
TEST(APIntTest,rvalue_invert)884 TEST(APIntTest, rvalue_invert) {
885 // Lamdba to return an APInt by value, but also provide the raw value of the
886 // allocated data.
887 auto getRValue = [](const char *HexString, uint64_t const *&RawData) {
888 APInt V(129, HexString, 16);
889 RawData = V.getRawData();
890 return V;
891 };
892
893 APInt One(129, 1);
894 APInt NegativeTwo(129, -2ULL, true);
895
896 const uint64_t *RawData = nullptr;
897
898 {
899 // ~1 = -2
900 APInt NegL = ~One;
901 EXPECT_EQ(NegL, NegativeTwo);
902
903 APInt NegR = ~getRValue("1", RawData);
904 EXPECT_EQ(NegR, NegativeTwo);
905 EXPECT_EQ(NegR.getRawData(), RawData);
906 }
907 }
908
909 // Tests different div/rem varaints using scheme (a * b + c) / a
testDiv(APInt a,APInt b,APInt c)910 void testDiv(APInt a, APInt b, APInt c) {
911 ASSERT_TRUE(a.uge(b)); // Must: a >= b
912 ASSERT_TRUE(a.ugt(c)); // Must: a > c
913
914 auto p = a * b + c;
915
916 auto q = p.udiv(a);
917 auto r = p.urem(a);
918 EXPECT_EQ(b, q);
919 EXPECT_EQ(c, r);
920 APInt::udivrem(p, a, q, r);
921 EXPECT_EQ(b, q);
922 EXPECT_EQ(c, r);
923 q = p.sdiv(a);
924 r = p.srem(a);
925 EXPECT_EQ(b, q);
926 EXPECT_EQ(c, r);
927 APInt::sdivrem(p, a, q, r);
928 EXPECT_EQ(b, q);
929 EXPECT_EQ(c, r);
930
931 if (b.ugt(c)) { // Test also symmetric case
932 q = p.udiv(b);
933 r = p.urem(b);
934 EXPECT_EQ(a, q);
935 EXPECT_EQ(c, r);
936 APInt::udivrem(p, b, q, r);
937 EXPECT_EQ(a, q);
938 EXPECT_EQ(c, r);
939 q = p.sdiv(b);
940 r = p.srem(b);
941 EXPECT_EQ(a, q);
942 EXPECT_EQ(c, r);
943 APInt::sdivrem(p, b, q, r);
944 EXPECT_EQ(a, q);
945 EXPECT_EQ(c, r);
946 }
947 }
948
TEST(APIntTest,divrem_big1)949 TEST(APIntTest, divrem_big1) {
950 // Tests KnuthDiv rare step D6
951 testDiv({256, "1ffffffffffffffff", 16},
952 {256, "1ffffffffffffffff", 16},
953 {256, 0});
954 }
955
TEST(APIntTest,divrem_big2)956 TEST(APIntTest, divrem_big2) {
957 // Tests KnuthDiv rare step D6
958 testDiv({1024, "112233ceff"
959 "cecece000000ffffffffffffffffffff"
960 "ffffffffffffffffffffffffffffffff"
961 "ffffffffffffffffffffffffffffffff"
962 "ffffffffffffffffffffffffffffff33", 16},
963 {1024, "111111ffffffffffffffff"
964 "ffffffffffffffffffffffffffffffff"
965 "fffffffffffffffffffffffffffffccf"
966 "ffffffffffffffffffffffffffffff00", 16},
967 {1024, 7919});
968 }
969
TEST(APIntTest,divrem_big3)970 TEST(APIntTest, divrem_big3) {
971 // Tests KnuthDiv case without shift
972 testDiv({256, "80000001ffffffffffffffff", 16},
973 {256, "ffffffffffffff0000000", 16},
974 {256, 4219});
975 }
976
TEST(APIntTest,divrem_big4)977 TEST(APIntTest, divrem_big4) {
978 // Tests heap allocation in divide() enfoced by huge numbers
979 testDiv(APInt{4096, 5}.shl(2001),
980 APInt{4096, 1}.shl(2000),
981 APInt{4096, 4219*13});
982 }
983
TEST(APIntTest,divrem_big5)984 TEST(APIntTest, divrem_big5) {
985 // Tests one word divisor case of divide()
986 testDiv(APInt{1024, 19}.shl(811),
987 APInt{1024, 4356013}, // one word
988 APInt{1024, 1});
989 }
990
TEST(APIntTest,divrem_big6)991 TEST(APIntTest, divrem_big6) {
992 // Tests some rare "borrow" cases in D4 step
993 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16},
994 APInt{512, "10000000000000001000000000000001", 16},
995 APInt{512, "10000000000000000000000000000000", 16});
996 }
997
TEST(APIntTest,divrem_big7)998 TEST(APIntTest, divrem_big7) {
999 // Yet another test for KnuthDiv rare step D6.
1000 testDiv({224, "800000008000000200000005", 16},
1001 {224, "fffffffd", 16},
1002 {224, "80000000800000010000000f", 16});
1003 }
1004
testDiv(APInt a,uint64_t b,APInt c)1005 void testDiv(APInt a, uint64_t b, APInt c) {
1006 auto p = a * b + c;
1007
1008 APInt q;
1009 uint64_t r;
1010 // Unsigned division will only work if our original number wasn't negative.
1011 if (!a.isNegative()) {
1012 q = p.udiv(b);
1013 r = p.urem(b);
1014 EXPECT_EQ(a, q);
1015 EXPECT_EQ(c, r);
1016 APInt::udivrem(p, b, q, r);
1017 EXPECT_EQ(a, q);
1018 EXPECT_EQ(c, r);
1019 }
1020 q = p.sdiv(b);
1021 r = p.srem(b);
1022 EXPECT_EQ(a, q);
1023 if (c.isNegative())
1024 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work.
1025 else
1026 EXPECT_EQ(c, r);
1027 int64_t sr;
1028 APInt::sdivrem(p, b, q, sr);
1029 EXPECT_EQ(a, q);
1030 if (c.isNegative())
1031 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work.
1032 else
1033 EXPECT_EQ(c, sr);
1034 }
1035
TEST(APIntTest,divremuint)1036 TEST(APIntTest, divremuint) {
1037 // Single word APInt
1038 testDiv(APInt{64, 9},
1039 2,
1040 APInt{64, 1});
1041
1042 // Single word negative APInt
1043 testDiv(-APInt{64, 9},
1044 2,
1045 -APInt{64, 1});
1046
1047 // Multiword dividend with only one significant word.
1048 testDiv(APInt{256, 9},
1049 2,
1050 APInt{256, 1});
1051
1052 // Negative dividend.
1053 testDiv(-APInt{256, 9},
1054 2,
1055 -APInt{256, 1});
1056
1057 // Multiword dividend
1058 testDiv(APInt{1024, 19}.shl(811),
1059 4356013, // one word
1060 APInt{1024, 1});
1061 }
1062
TEST(APIntTest,divrem_simple)1063 TEST(APIntTest, divrem_simple) {
1064 // Test simple cases.
1065 APInt A(65, 2), B(65, 2);
1066 APInt Q, R;
1067
1068 // X / X
1069 APInt::sdivrem(A, B, Q, R);
1070 EXPECT_EQ(Q, APInt(65, 1));
1071 EXPECT_EQ(R, APInt(65, 0));
1072 APInt::udivrem(A, B, Q, R);
1073 EXPECT_EQ(Q, APInt(65, 1));
1074 EXPECT_EQ(R, APInt(65, 0));
1075
1076 // 0 / X
1077 APInt O(65, 0);
1078 APInt::sdivrem(O, B, Q, R);
1079 EXPECT_EQ(Q, APInt(65, 0));
1080 EXPECT_EQ(R, APInt(65, 0));
1081 APInt::udivrem(O, B, Q, R);
1082 EXPECT_EQ(Q, APInt(65, 0));
1083 EXPECT_EQ(R, APInt(65, 0));
1084
1085 // X / 1
1086 APInt I(65, 1);
1087 APInt::sdivrem(A, I, Q, R);
1088 EXPECT_EQ(Q, A);
1089 EXPECT_EQ(R, APInt(65, 0));
1090 APInt::udivrem(A, I, Q, R);
1091 EXPECT_EQ(Q, A);
1092 EXPECT_EQ(R, APInt(65, 0));
1093 }
1094
TEST(APIntTest,fromString)1095 TEST(APIntTest, fromString) {
1096 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2));
1097 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2));
1098 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2));
1099 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2));
1100 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2));
1101
1102 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2));
1103 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2));
1104 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2));
1105 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2));
1106 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2));
1107
1108 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2));
1109 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2));
1110 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2));
1111 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2));
1112 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2));
1113
1114 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8));
1115 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8));
1116 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8));
1117 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8));
1118 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8));
1119 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8));
1120
1121 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8));
1122 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8));
1123 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8));
1124 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8));
1125 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8));
1126 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8));
1127
1128 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8));
1129 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8));
1130 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8));
1131 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8));
1132 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8));
1133 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8));
1134
1135 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10));
1136 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10));
1137 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10));
1138 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10));
1139 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10));
1140 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10));
1141
1142 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10));
1143 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10));
1144 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10));
1145 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10));
1146 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10));
1147 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10));
1148
1149 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16));
1150 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16));
1151 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16));
1152 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16));
1153 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16));
1154 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16));
1155
1156 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16));
1157 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16));
1158 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16));
1159 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16));
1160 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16));
1161 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16));
1162
1163 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36));
1164 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36));
1165 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36));
1166 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36));
1167 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36));
1168 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36));
1169
1170 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36));
1171 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36));
1172 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36));
1173 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36));
1174 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36));
1175 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36));
1176 }
1177
TEST(APIntTest,SaturatingMath)1178 TEST(APIntTest, SaturatingMath) {
1179 APInt AP_10 = APInt(8, 10);
1180 APInt AP_42 = APInt(8, 42);
1181 APInt AP_100 = APInt(8, 100);
1182 APInt AP_200 = APInt(8, 200);
1183
1184 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7));
1185 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6));
1186 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5));
1187
1188 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7));
1189 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6));
1190 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5));
1191
1192 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7));
1193 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6));
1194 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5));
1195
1196 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7));
1197 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6));
1198 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5));
1199
1200 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100));
1201 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200));
1202 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255)));
1203
1204 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100));
1205 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100));
1206 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100));
1207 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128)));
1208
1209 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10));
1210 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200));
1211 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255)));
1212
1213 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100));
1214 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100));
1215 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100));
1216 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127)));
1217
1218 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5)));
1219 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6)));
1220 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3)));
1221 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128)));
1222 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128)));
1223
1224 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5)));
1225 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6)));
1226 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127)));
1227 EXPECT_EQ(APInt(8, -125), APInt(8, -25).smul_sat(APInt(8, 5)));
1228 EXPECT_EQ(APInt(8, -125), APInt(8, 25).smul_sat(APInt(8, -5)));
1229 EXPECT_EQ(APInt(8, 125), APInt(8, -25).smul_sat(APInt(8, -5)));
1230 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5)));
1231 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6)));
1232 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6)));
1233 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6)));
1234 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6)));
1235
1236 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5)));
1237 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6)));
1238 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7)));
1239 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8)));
1240 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2)));
1241 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2)));
1242 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2)));
1243
1244 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4)));
1245 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5)));
1246 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8)));
1247 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4)));
1248 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5)));
1249 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6)));
1250 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7)));
1251 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8)));
1252 }
1253
TEST(APIntTest,FromArray)1254 TEST(APIntTest, FromArray) {
1255 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1)));
1256 }
1257
TEST(APIntTest,StringBitsNeeded2)1258 TEST(APIntTest, StringBitsNeeded2) {
1259 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2));
1260 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2));
1261 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2));
1262 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2));
1263 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2));
1264
1265 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2));
1266 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2));
1267 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2));
1268 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2));
1269 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2));
1270
1271 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2));
1272 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2));
1273 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2));
1274 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2));
1275 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2));
1276 }
1277
TEST(APIntTest,StringBitsNeeded8)1278 TEST(APIntTest, StringBitsNeeded8) {
1279 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8));
1280 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8));
1281 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8));
1282 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8));
1283 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8));
1284
1285 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8));
1286 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8));
1287 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8));
1288 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8));
1289 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8));
1290
1291 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8));
1292 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8));
1293 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8));
1294 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8));
1295 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8));
1296 }
1297
TEST(APIntTest,StringBitsNeeded10)1298 TEST(APIntTest, StringBitsNeeded10) {
1299 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10));
1300 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10));
1301 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10));
1302 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10));
1303 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10));
1304 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10));
1305
1306 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10));
1307 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10));
1308 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10));
1309 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10));
1310 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10));
1311
1312 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10));
1313 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10));
1314 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
1315 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
1316 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
1317
1318 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10));
1319 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10));
1320 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10));
1321 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10));
1322 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10));
1323 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10));
1324 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10));
1325 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10));
1326 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10));
1327 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10));
1328 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10));
1329 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10));
1330 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10));
1331 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10));
1332 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10));
1333 }
1334
TEST(APIntTest,StringBitsNeeded16)1335 TEST(APIntTest, StringBitsNeeded16) {
1336 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16));
1337 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16));
1338 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16));
1339 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16));
1340 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16));
1341
1342 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16));
1343 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16));
1344 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16));
1345 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16));
1346 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16));
1347
1348 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16));
1349 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16));
1350 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16));
1351 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16));
1352 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
1353 }
1354
TEST(APIntTest,toString)1355 TEST(APIntTest, toString) {
1356 SmallString<16> S;
1357 bool isSigned;
1358
1359 APInt(8, 0).toString(S, 2, true, true);
1360 EXPECT_EQ(std::string(S), "0b0");
1361 S.clear();
1362 APInt(8, 0).toString(S, 8, true, true);
1363 EXPECT_EQ(std::string(S), "00");
1364 S.clear();
1365 APInt(8, 0).toString(S, 10, true, true);
1366 EXPECT_EQ(std::string(S), "0");
1367 S.clear();
1368 APInt(8, 0).toString(S, 16, true, true);
1369 EXPECT_EQ(std::string(S), "0x0");
1370 S.clear();
1371 APInt(8, 0).toString(S, 36, true, false);
1372 EXPECT_EQ(std::string(S), "0");
1373 S.clear();
1374
1375 isSigned = false;
1376 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
1377 EXPECT_EQ(std::string(S), "0b11111111");
1378 S.clear();
1379 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
1380 EXPECT_EQ(std::string(S), "0377");
1381 S.clear();
1382 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
1383 EXPECT_EQ(std::string(S), "255");
1384 S.clear();
1385 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
1386 EXPECT_EQ(std::string(S), "0xFF");
1387 S.clear();
1388 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
1389 EXPECT_EQ(std::string(S), "73");
1390 S.clear();
1391
1392 isSigned = true;
1393 APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
1394 EXPECT_EQ(std::string(S), "-0b1");
1395 S.clear();
1396 APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
1397 EXPECT_EQ(std::string(S), "-01");
1398 S.clear();
1399 APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
1400 EXPECT_EQ(std::string(S), "-1");
1401 S.clear();
1402 APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
1403 EXPECT_EQ(std::string(S), "-0x1");
1404 S.clear();
1405 APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
1406 EXPECT_EQ(std::string(S), "-1");
1407 S.clear();
1408 }
1409
TEST(APIntTest,Log2)1410 TEST(APIntTest, Log2) {
1411 EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
1412 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);
1413 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1);
1414 EXPECT_EQ(APInt(15, 8).logBase2(), 3U);
1415 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U);
1416 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3);
1417 EXPECT_EQ(APInt(15, 9).logBase2(), 3U);
1418 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U);
1419 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1);
1420 }
1421
TEST(APIntTest,magic)1422 TEST(APIntTest, magic) {
1423 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16));
1424 EXPECT_EQ(APInt(32, 3).magic().s, 0U);
1425 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16));
1426 EXPECT_EQ(APInt(32, 5).magic().s, 1U);
1427 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16));
1428 EXPECT_EQ(APInt(32, 7).magic().s, 2U);
1429 }
1430
TEST(APIntTest,magicu)1431 TEST(APIntTest, magicu) {
1432 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16));
1433 EXPECT_EQ(APInt(32, 3).magicu().s, 1U);
1434 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16));
1435 EXPECT_EQ(APInt(32, 5).magicu().s, 2U);
1436 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16));
1437 EXPECT_EQ(APInt(32, 7).magicu().s, 3U);
1438 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16));
1439 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U);
1440 }
1441
1442 #ifdef GTEST_HAS_DEATH_TEST
1443 #ifndef NDEBUG
TEST(APIntTest,StringDeath)1444 TEST(APIntTest, StringDeath) {
1445 EXPECT_DEATH((void)APInt(0, "", 0), "Bitwidth too small");
1446 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length");
1447 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!");
1448 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length");
1449 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value.");
1450 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width");
1451 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length");
1452 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string");
1453 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string");
1454 }
1455 #endif
1456 #endif
1457
TEST(APIntTest,mul_clear)1458 TEST(APIntTest, mul_clear) {
1459 APInt ValA(65, -1ULL);
1460 APInt ValB(65, 4);
1461 APInt ValC(65, 0);
1462 ValC = ValA * ValB;
1463 ValA *= ValB;
1464 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
1465 }
1466
TEST(APIntTest,Rotate)1467 TEST(APIntTest, Rotate) {
1468 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0));
1469 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1));
1470 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2));
1471 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4));
1472 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8));
1473
1474 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0));
1475 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1));
1476 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2));
1477 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4));
1478 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8));
1479
1480 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33));
1481 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33)));
1482
1483 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33));
1484 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33)));
1485 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33)));
1486 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40)));
1487 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30)));
1488 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31)));
1489
1490 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0)));
1491 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1)));
1492
1493 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4)));
1494
1495 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64)));
1496 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65)));
1497
1498 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3)));
1499 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10)));
1500 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10)));
1501 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120)));
1502
1503 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0));
1504 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1));
1505 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2));
1506 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4));
1507 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8));
1508
1509 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0));
1510 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1));
1511 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2));
1512 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4));
1513 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8));
1514
1515 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33));
1516 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33)));
1517
1518 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33));
1519 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33)));
1520 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33)));
1521 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40)));
1522
1523 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30)));
1524 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31)));
1525
1526 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0)));
1527 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1)));
1528
1529 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4)));
1530
1531 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64)));
1532 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65)));
1533
1534 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3)));
1535 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10)));
1536 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10)));
1537 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120)));
1538
1539 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16);
1540 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16);
1541 EXPECT_EQ(Rot, Big.rotr(144));
1542
1543 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big));
1544 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big));
1545 }
1546
TEST(APIntTest,Splat)1547 TEST(APIntTest, Splat) {
1548 APInt ValA(8, 0x01);
1549 EXPECT_EQ(ValA, APInt::getSplat(8, ValA));
1550 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA));
1551
1552 APInt ValB(3, 5);
1553 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB));
1554 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB));
1555 }
1556
TEST(APIntTest,tcDecrement)1557 TEST(APIntTest, tcDecrement) {
1558 // Test single word decrement.
1559
1560 // No out borrow.
1561 {
1562 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1);
1563 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1);
1564 EXPECT_EQ(carry, APInt::WordType(0));
1565 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1);
1566 }
1567
1568 // With out borrow.
1569 {
1570 APInt::WordType singleWord = 0;
1571 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1);
1572 EXPECT_EQ(carry, APInt::WordType(1));
1573 EXPECT_EQ(singleWord, ~APInt::WordType(0));
1574 }
1575
1576 // Test multiword decrement.
1577
1578 // No across word borrow, no out borrow.
1579 {
1580 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1};
1581 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1};
1582 APInt::tcDecrement(test, 4);
1583 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
1584 }
1585
1586 // 1 across word borrow, no out borrow.
1587 {
1588 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1};
1589 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1};
1590 APInt::WordType carry = APInt::tcDecrement(test, 4);
1591 EXPECT_EQ(carry, APInt::WordType(0));
1592 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
1593 }
1594
1595 // 2 across word borrow, no out borrow.
1596 {
1597 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1};
1598 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1};
1599 APInt::WordType carry = APInt::tcDecrement(test, 4);
1600 EXPECT_EQ(carry, APInt::WordType(0));
1601 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
1602 }
1603
1604 // 3 across word borrow, no out borrow.
1605 {
1606 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1};
1607 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0};
1608 APInt::WordType carry = APInt::tcDecrement(test, 4);
1609 EXPECT_EQ(carry, APInt::WordType(0));
1610 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
1611 }
1612
1613 // 3 across word borrow, with out borrow.
1614 {
1615 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0};
1616 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)};
1617 APInt::WordType carry = APInt::tcDecrement(test, 4);
1618 EXPECT_EQ(carry, APInt::WordType(1));
1619 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
1620 }
1621 }
1622
TEST(APIntTest,arrayAccess)1623 TEST(APIntTest, arrayAccess) {
1624 // Single word check.
1625 uint64_t E1 = 0x2CA7F46BF6569915ULL;
1626 APInt A1(64, E1);
1627 for (unsigned i = 0, e = 64; i < e; ++i) {
1628 EXPECT_EQ(bool(E1 & (1ULL << i)),
1629 A1[i]);
1630 }
1631
1632 // Multiword check.
1633 APInt::WordType E2[4] = {
1634 0xEB6EB136591CBA21ULL,
1635 0x7B9358BD6A33F10AULL,
1636 0x7E7FFA5EADD8846ULL,
1637 0x305F341CA00B613DULL
1638 };
1639 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2);
1640 for (unsigned i = 0; i < 4; ++i) {
1641 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) {
1642 EXPECT_EQ(bool(E2[i] & (1ULL << j)),
1643 A2[i*APInt::APINT_BITS_PER_WORD + j]);
1644 }
1645 }
1646 }
1647
TEST(APIntTest,LargeAPIntConstruction)1648 TEST(APIntTest, LargeAPIntConstruction) {
1649 // Check that we can properly construct very large APInt. It is very
1650 // unlikely that people will ever do this, but it is a legal input,
1651 // so we should not crash on it.
1652 APInt A9(UINT32_MAX, 0);
1653 EXPECT_FALSE(A9.getBoolValue());
1654 }
1655
TEST(APIntTest,nearestLogBase2)1656 TEST(APIntTest, nearestLogBase2) {
1657 // Single word check.
1658
1659 // Test round up.
1660 uint64_t I1 = 0x1800001;
1661 APInt A1(64, I1);
1662 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2());
1663
1664 // Test round down.
1665 uint64_t I2 = 0x1000011;
1666 APInt A2(64, I2);
1667 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2());
1668
1669 // Test ties round up.
1670 uint64_t I3 = 0x1800000;
1671 APInt A3(64, I3);
1672 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2());
1673
1674 // Multiple word check.
1675
1676 // Test round up.
1677 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0};
1678 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4);
1679 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2());
1680
1681 // Test round down.
1682 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0};
1683 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5);
1684 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2());
1685
1686 // Test ties round up.
1687 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18};
1688 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6);
1689 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2());
1690
1691 // Test BitWidth == 1 special cases.
1692 APInt A7(1, 1);
1693 EXPECT_EQ(A7.nearestLogBase2(), 0ULL);
1694 APInt A8(1, 0);
1695 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX);
1696
1697 // Test the zero case when we have a bit width large enough such
1698 // that the bit width is larger than UINT32_MAX-1.
1699 APInt A9(UINT32_MAX, 0);
1700 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX);
1701 }
1702
TEST(APIntTest,IsSplat)1703 TEST(APIntTest, IsSplat) {
1704 APInt A(32, 0x01010101);
1705 EXPECT_FALSE(A.isSplat(1));
1706 EXPECT_FALSE(A.isSplat(2));
1707 EXPECT_FALSE(A.isSplat(4));
1708 EXPECT_TRUE(A.isSplat(8));
1709 EXPECT_TRUE(A.isSplat(16));
1710 EXPECT_TRUE(A.isSplat(32));
1711
1712 APInt B(24, 0xAAAAAA);
1713 EXPECT_FALSE(B.isSplat(1));
1714 EXPECT_TRUE(B.isSplat(2));
1715 EXPECT_TRUE(B.isSplat(4));
1716 EXPECT_TRUE(B.isSplat(8));
1717 EXPECT_TRUE(B.isSplat(24));
1718
1719 APInt C(24, 0xABAAAB);
1720 EXPECT_FALSE(C.isSplat(1));
1721 EXPECT_FALSE(C.isSplat(2));
1722 EXPECT_FALSE(C.isSplat(4));
1723 EXPECT_FALSE(C.isSplat(8));
1724 EXPECT_TRUE(C.isSplat(24));
1725
1726 APInt D(32, 0xABBAABBA);
1727 EXPECT_FALSE(D.isSplat(1));
1728 EXPECT_FALSE(D.isSplat(2));
1729 EXPECT_FALSE(D.isSplat(4));
1730 EXPECT_FALSE(D.isSplat(8));
1731 EXPECT_TRUE(D.isSplat(16));
1732 EXPECT_TRUE(D.isSplat(32));
1733
1734 APInt E(32, 0);
1735 EXPECT_TRUE(E.isSplat(1));
1736 EXPECT_TRUE(E.isSplat(2));
1737 EXPECT_TRUE(E.isSplat(4));
1738 EXPECT_TRUE(E.isSplat(8));
1739 EXPECT_TRUE(E.isSplat(16));
1740 EXPECT_TRUE(E.isSplat(32));
1741 }
1742
TEST(APIntTest,isMask)1743 TEST(APIntTest, isMask) {
1744 EXPECT_FALSE(APInt(32, 0x01010101).isMask());
1745 EXPECT_FALSE(APInt(32, 0xf0000000).isMask());
1746 EXPECT_FALSE(APInt(32, 0xffff0000).isMask());
1747 EXPECT_FALSE(APInt(32, 0xff << 1).isMask());
1748
1749 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) {
1750 EXPECT_FALSE(APInt(N, 0).isMask());
1751
1752 APInt One(N, 1);
1753 for (int I = 1; I <= N; ++I) {
1754 APInt MaskVal = One.shl(I) - 1;
1755 EXPECT_TRUE(MaskVal.isMask());
1756 EXPECT_TRUE(MaskVal.isMask(I));
1757 }
1758 }
1759 }
1760
TEST(APIntTest,isShiftedMask)1761 TEST(APIntTest, isShiftedMask) {
1762 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask());
1763 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask());
1764 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask());
1765 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask());
1766
1767 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) {
1768 EXPECT_FALSE(APInt(N, 0).isShiftedMask());
1769
1770 APInt One(N, 1);
1771 for (int I = 1; I < N; ++I) {
1772 APInt MaskVal = One.shl(I) - 1;
1773 EXPECT_TRUE(MaskVal.isShiftedMask());
1774 }
1775 for (int I = 1; I < N - 1; ++I) {
1776 APInt MaskVal = One.shl(I);
1777 EXPECT_TRUE(MaskVal.isShiftedMask());
1778 }
1779 for (int I = 1; I < N; ++I) {
1780 APInt MaskVal = APInt::getHighBitsSet(N, I);
1781 EXPECT_TRUE(MaskVal.isShiftedMask());
1782 }
1783 }
1784 }
1785
1786 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which
1787 // does self-move on some platforms.
1788 #ifdef EXPENSIVE_CHECKS
1789 #if defined(__clang__)
1790 // Disable the pragma warning from versions of Clang without -Wself-move
1791 #pragma clang diagnostic push
1792 #pragma clang diagnostic ignored "-Wunknown-pragmas"
1793 // Disable the warning that triggers on exactly what is being tested.
1794 #pragma clang diagnostic push
1795 #pragma clang diagnostic ignored "-Wself-move"
1796 #endif
TEST(APIntTest,SelfMoveAssignment)1797 TEST(APIntTest, SelfMoveAssignment) {
1798 APInt X(32, 0xdeadbeef);
1799 X = std::move(X);
1800 EXPECT_EQ(32u, X.getBitWidth());
1801 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue());
1802
1803 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL};
1804 APInt Y(128, Bits);
1805 Y = std::move(Y);
1806 EXPECT_EQ(128u, Y.getBitWidth());
1807 EXPECT_EQ(~0ULL, Y.getLimitedValue());
1808 const uint64_t *Raw = Y.getRawData();
1809 EXPECT_EQ(2u, Y.getNumWords());
1810 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]);
1811 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]);
1812 }
1813 #if defined(__clang__)
1814 #pragma clang diagnostic pop
1815 #pragma clang diagnostic pop
1816 #endif
1817 #endif // EXPENSIVE_CHECKS
1818
TEST(APIntTest,byteSwap)1819 TEST(APIntTest, byteSwap) {
1820 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap());
1821 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap());
1822 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap());
1823 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap());
1824 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap());
1825 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap());
1826 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap());
1827 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap());
1828
1829 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256,
1830 1024, 1032, 1040}) {
1831 for (unsigned I = 0; I < N; I += 8) {
1832 APInt X = APInt::getBitsSet(N, I, I + 8);
1833 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I);
1834 EXPECT_EQ(Y, X.byteSwap());
1835 EXPECT_EQ(X, Y.byteSwap());
1836 }
1837 }
1838 }
1839
TEST(APIntTest,reverseBits)1840 TEST(APIntTest, reverseBits) {
1841 EXPECT_EQ(1, APInt(1, 1).reverseBits());
1842 EXPECT_EQ(0, APInt(1, 0).reverseBits());
1843
1844 EXPECT_EQ(3, APInt(2, 3).reverseBits());
1845 EXPECT_EQ(3, APInt(2, 3).reverseBits());
1846
1847 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits());
1848 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits());
1849 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits());
1850
1851 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits());
1852 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits());
1853
1854 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits());
1855 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits());
1856
1857 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits());
1858 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits());
1859
1860 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits());
1861 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits());
1862
1863 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits());
1864
1865 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits());
1866 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits());
1867
1868 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits());
1869 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits());
1870
1871 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33,
1872 63, 64, 65, 127, 128, 257, 1024 }) {
1873 for (unsigned I = 0; I < N; ++I) {
1874 APInt X = APInt::getOneBitSet(N, I);
1875 APInt Y = APInt::getOneBitSet(N, N - (I + 1));
1876 EXPECT_EQ(Y, X.reverseBits());
1877 EXPECT_EQ(X, Y.reverseBits());
1878 }
1879 }
1880 }
1881
TEST(APIntTest,insertBits)1882 TEST(APIntTest, insertBits) {
1883 APInt iSrc(31, 0x00123456);
1884
1885 // Direct copy.
1886 APInt i31(31, 0x76543210ull);
1887 i31.insertBits(iSrc, 0);
1888 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue());
1889
1890 // Single word src/dst insertion.
1891 APInt i63(63, 0x01234567FFFFFFFFull);
1892 i63.insertBits(iSrc, 4);
1893 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue());
1894
1895 // Insert single word src into one word of dst.
1896 APInt i120(120, UINT64_MAX, true);
1897 i120.insertBits(iSrc, 8);
1898 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue());
1899
1900 // Insert single word src into two words of dst.
1901 APInt i127(127, UINT64_MAX, true);
1902 i127.insertBits(iSrc, 48);
1903 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull);
1904 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull);
1905
1906 // Insert on word boundaries.
1907 APInt i128(128, 0);
1908 i128.insertBits(APInt(64, UINT64_MAX, true), 0);
1909 i128.insertBits(APInt(64, UINT64_MAX, true), 64);
1910 EXPECT_EQ(-1, i128.getSExtValue());
1911
1912 APInt i256(256, UINT64_MAX, true);
1913 i256.insertBits(APInt(65, 0), 0);
1914 i256.insertBits(APInt(69, 0), 64);
1915 i256.insertBits(APInt(128, 0), 128);
1916 EXPECT_EQ(0u, i256.getSExtValue());
1917
1918 APInt i257(257, 0);
1919 i257.insertBits(APInt(96, UINT64_MAX, true), 64);
1920 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull);
1921 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull);
1922 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull);
1923 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull);
1924
1925 // General insertion.
1926 APInt i260(260, UINT64_MAX, true);
1927 i260.insertBits(APInt(129, 1ull << 48), 15);
1928 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull);
1929 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull);
1930 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull);
1931 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull);
1932 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full);
1933 }
1934
TEST(APIntTest,insertBitsUInt64)1935 TEST(APIntTest, insertBitsUInt64) {
1936 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint
1937 uint64_t iSrc = 0x00123456;
1938
1939 // Direct copy.
1940 APInt i31(31, 0x76543210ull);
1941 i31.insertBits(iSrc, 0, 31);
1942 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue());
1943
1944 // Single word src/dst insertion.
1945 APInt i63(63, 0x01234567FFFFFFFFull);
1946 i63.insertBits(iSrc, 4, 31);
1947 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue());
1948
1949 // Insert single word src into one word of dst.
1950 APInt i120(120, UINT64_MAX, true);
1951 i120.insertBits(iSrc, 8, 31);
1952 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue());
1953
1954 // Insert single word src into two words of dst.
1955 APInt i127(127, UINT64_MAX, true);
1956 i127.insertBits(iSrc, 48, 31);
1957 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull);
1958 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull);
1959
1960 // Insert on word boundaries.
1961 APInt i128(128, 0);
1962 i128.insertBits(UINT64_MAX, 0, 64);
1963 i128.insertBits(UINT64_MAX, 64, 64);
1964 EXPECT_EQ(-1, i128.getSExtValue());
1965
1966 APInt i256(256, UINT64_MAX, true);
1967 i256.insertBits(0, 0, 64);
1968 i256.insertBits(0, 64, 1);
1969 i256.insertBits(0, 64, 64);
1970 i256.insertBits(0, 128, 5);
1971 i256.insertBits(0, 128, 64);
1972 i256.insertBits(0, 192, 64);
1973 EXPECT_EQ(0u, i256.getSExtValue());
1974
1975 APInt i257(257, 0);
1976 i257.insertBits(APInt(96, UINT64_MAX, true), 64);
1977 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull);
1978 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull);
1979 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull);
1980 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull);
1981 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull);
1982
1983 // General insertion.
1984 APInt i260(260, UINT64_MAX, true);
1985 i260.insertBits(APInt(129, 1ull << 48), 15);
1986 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull);
1987 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull);
1988 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull);
1989 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull);
1990 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full);
1991 }
1992
TEST(APIntTest,extractBits)1993 TEST(APIntTest, extractBits) {
1994 APInt i32(32, 0x1234567);
1995 EXPECT_EQ(0x3456, i32.extractBits(16, 4));
1996
1997 APInt i64(64, 0x01234567FFFFFFFFull);
1998 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0));
1999 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32));
2000 EXPECT_EQ(0x01234567, i64.extractBits(32, 32));
2001 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32));
2002
2003 APInt i257(257, 0xFFFFFFFFFF0000FFull, true);
2004 EXPECT_EQ(0xFFu, i257.extractBits(16, 0));
2005 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16));
2006 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1));
2007 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16));
2008 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue());
2009 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue());
2010 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue());
2011 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue());
2012 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue());
2013 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue());
2014 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full),
2015 i257.extractBits(128, 1).getSExtValue());
2016 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full),
2017 i257.lshr(1).trunc(128).getSExtValue());
2018 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full),
2019 i257.extractBits(129, 1).getSExtValue());
2020 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full),
2021 i257.lshr(1).trunc(129).getSExtValue());
2022
2023 EXPECT_EQ(APInt(48, 0),
2024 APInt(144, "281474976710655", 10).extractBits(48, 48));
2025 EXPECT_EQ(APInt(48, 0),
2026 APInt(144, "281474976710655", 10).lshr(48).trunc(48));
2027 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull),
2028 APInt(144, "281474976710655", 10).extractBits(48, 0));
2029 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull),
2030 APInt(144, "281474976710655", 10).lshr(0).trunc(48));
2031 EXPECT_EQ(APInt(48, 0x00007fffffffffffull),
2032 APInt(144, "281474976710655", 10).extractBits(48, 1));
2033 EXPECT_EQ(APInt(48, 0x00007fffffffffffull),
2034 APInt(144, "281474976710655", 10).lshr(1).trunc(48));
2035 }
2036
TEST(APIntTest,extractBitsAsZExtValue)2037 TEST(APIntTest, extractBitsAsZExtValue) {
2038 // Tests based on extractBits
2039 APInt i32(32, 0x1234567);
2040 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4));
2041
2042 APInt i257(257, 0xFFFFFFFFFF0000FFull, true);
2043 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0));
2044 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1));
2045 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64));
2046 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128));
2047 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192));
2048 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191));
2049 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255));
2050 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1));
2051 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65));
2052 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1));
2053 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65));
2054 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129));
2055
2056 EXPECT_EQ(APInt(48, 0),
2057 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48));
2058 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull),
2059 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0));
2060 EXPECT_EQ(APInt(48, 0x00007fffffffffffull),
2061 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1));
2062 }
2063
TEST(APIntTest,getLowBitsSet)2064 TEST(APIntTest, getLowBitsSet) {
2065 APInt i128lo64 = APInt::getLowBitsSet(128, 64);
2066 EXPECT_EQ(0u, i128lo64.countLeadingOnes());
2067 EXPECT_EQ(64u, i128lo64.countLeadingZeros());
2068 EXPECT_EQ(64u, i128lo64.getActiveBits());
2069 EXPECT_EQ(0u, i128lo64.countTrailingZeros());
2070 EXPECT_EQ(64u, i128lo64.countTrailingOnes());
2071 EXPECT_EQ(64u, i128lo64.countPopulation());
2072 }
2073
TEST(APIntTest,getBitsSet)2074 TEST(APIntTest, getBitsSet) {
2075 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63);
2076 EXPECT_EQ(0u, i64hi1lo1.countLeadingOnes());
2077 EXPECT_EQ(1u, i64hi1lo1.countLeadingZeros());
2078 EXPECT_EQ(63u, i64hi1lo1.getActiveBits());
2079 EXPECT_EQ(1u, i64hi1lo1.countTrailingZeros());
2080 EXPECT_EQ(0u, i64hi1lo1.countTrailingOnes());
2081 EXPECT_EQ(62u, i64hi1lo1.countPopulation());
2082
2083 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126);
2084 EXPECT_EQ(0u, i127hi1lo1.countLeadingOnes());
2085 EXPECT_EQ(1u, i127hi1lo1.countLeadingZeros());
2086 EXPECT_EQ(126u, i127hi1lo1.getActiveBits());
2087 EXPECT_EQ(1u, i127hi1lo1.countTrailingZeros());
2088 EXPECT_EQ(0u, i127hi1lo1.countTrailingOnes());
2089 EXPECT_EQ(125u, i127hi1lo1.countPopulation());
2090 }
2091
TEST(APIntTest,getBitsSetWithWrap)2092 TEST(APIntTest, getBitsSetWithWrap) {
2093 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63);
2094 EXPECT_EQ(0u, i64hi1lo1.countLeadingOnes());
2095 EXPECT_EQ(1u, i64hi1lo1.countLeadingZeros());
2096 EXPECT_EQ(63u, i64hi1lo1.getActiveBits());
2097 EXPECT_EQ(1u, i64hi1lo1.countTrailingZeros());
2098 EXPECT_EQ(0u, i64hi1lo1.countTrailingOnes());
2099 EXPECT_EQ(62u, i64hi1lo1.countPopulation());
2100
2101 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126);
2102 EXPECT_EQ(0u, i127hi1lo1.countLeadingOnes());
2103 EXPECT_EQ(1u, i127hi1lo1.countLeadingZeros());
2104 EXPECT_EQ(126u, i127hi1lo1.getActiveBits());
2105 EXPECT_EQ(1u, i127hi1lo1.countTrailingZeros());
2106 EXPECT_EQ(0u, i127hi1lo1.countTrailingOnes());
2107 EXPECT_EQ(125u, i127hi1lo1.countPopulation());
2108
2109 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1);
2110 EXPECT_EQ(1u, i64hi1lo1wrap.countLeadingOnes());
2111 EXPECT_EQ(0u, i64hi1lo1wrap.countLeadingZeros());
2112 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits());
2113 EXPECT_EQ(0u, i64hi1lo1wrap.countTrailingZeros());
2114 EXPECT_EQ(1u, i64hi1lo1wrap.countTrailingOnes());
2115 EXPECT_EQ(2u, i64hi1lo1wrap.countPopulation());
2116
2117 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1);
2118 EXPECT_EQ(1u, i127hi1lo1wrap.countLeadingOnes());
2119 EXPECT_EQ(0u, i127hi1lo1wrap.countLeadingZeros());
2120 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits());
2121 EXPECT_EQ(0u, i127hi1lo1wrap.countTrailingZeros());
2122 EXPECT_EQ(1u, i127hi1lo1wrap.countTrailingOnes());
2123 EXPECT_EQ(2u, i127hi1lo1wrap.countPopulation());
2124
2125 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10);
2126 EXPECT_EQ(32u, i32hiequallowrap.countLeadingOnes());
2127 EXPECT_EQ(0u, i32hiequallowrap.countLeadingZeros());
2128 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits());
2129 EXPECT_EQ(0u, i32hiequallowrap.countTrailingZeros());
2130 EXPECT_EQ(32u, i32hiequallowrap.countTrailingOnes());
2131 EXPECT_EQ(32u, i32hiequallowrap.countPopulation());
2132 }
2133
TEST(APIntTest,getHighBitsSet)2134 TEST(APIntTest, getHighBitsSet) {
2135 APInt i64hi32 = APInt::getHighBitsSet(64, 32);
2136 EXPECT_EQ(32u, i64hi32.countLeadingOnes());
2137 EXPECT_EQ(0u, i64hi32.countLeadingZeros());
2138 EXPECT_EQ(64u, i64hi32.getActiveBits());
2139 EXPECT_EQ(32u, i64hi32.countTrailingZeros());
2140 EXPECT_EQ(0u, i64hi32.countTrailingOnes());
2141 EXPECT_EQ(32u, i64hi32.countPopulation());
2142 }
2143
TEST(APIntTest,getBitsSetFrom)2144 TEST(APIntTest, getBitsSetFrom) {
2145 APInt i64hi31 = APInt::getBitsSetFrom(64, 33);
2146 EXPECT_EQ(31u, i64hi31.countLeadingOnes());
2147 EXPECT_EQ(0u, i64hi31.countLeadingZeros());
2148 EXPECT_EQ(64u, i64hi31.getActiveBits());
2149 EXPECT_EQ(33u, i64hi31.countTrailingZeros());
2150 EXPECT_EQ(0u, i64hi31.countTrailingOnes());
2151 EXPECT_EQ(31u, i64hi31.countPopulation());
2152 }
2153
TEST(APIntTest,setLowBits)2154 TEST(APIntTest, setLowBits) {
2155 APInt i64lo32(64, 0);
2156 i64lo32.setLowBits(32);
2157 EXPECT_EQ(0u, i64lo32.countLeadingOnes());
2158 EXPECT_EQ(32u, i64lo32.countLeadingZeros());
2159 EXPECT_EQ(32u, i64lo32.getActiveBits());
2160 EXPECT_EQ(0u, i64lo32.countTrailingZeros());
2161 EXPECT_EQ(32u, i64lo32.countTrailingOnes());
2162 EXPECT_EQ(32u, i64lo32.countPopulation());
2163
2164 APInt i128lo64(128, 0);
2165 i128lo64.setLowBits(64);
2166 EXPECT_EQ(0u, i128lo64.countLeadingOnes());
2167 EXPECT_EQ(64u, i128lo64.countLeadingZeros());
2168 EXPECT_EQ(64u, i128lo64.getActiveBits());
2169 EXPECT_EQ(0u, i128lo64.countTrailingZeros());
2170 EXPECT_EQ(64u, i128lo64.countTrailingOnes());
2171 EXPECT_EQ(64u, i128lo64.countPopulation());
2172
2173 APInt i128lo24(128, 0);
2174 i128lo24.setLowBits(24);
2175 EXPECT_EQ(0u, i128lo24.countLeadingOnes());
2176 EXPECT_EQ(104u, i128lo24.countLeadingZeros());
2177 EXPECT_EQ(24u, i128lo24.getActiveBits());
2178 EXPECT_EQ(0u, i128lo24.countTrailingZeros());
2179 EXPECT_EQ(24u, i128lo24.countTrailingOnes());
2180 EXPECT_EQ(24u, i128lo24.countPopulation());
2181
2182 APInt i128lo104(128, 0);
2183 i128lo104.setLowBits(104);
2184 EXPECT_EQ(0u, i128lo104.countLeadingOnes());
2185 EXPECT_EQ(24u, i128lo104.countLeadingZeros());
2186 EXPECT_EQ(104u, i128lo104.getActiveBits());
2187 EXPECT_EQ(0u, i128lo104.countTrailingZeros());
2188 EXPECT_EQ(104u, i128lo104.countTrailingOnes());
2189 EXPECT_EQ(104u, i128lo104.countPopulation());
2190
2191 APInt i128lo0(128, 0);
2192 i128lo0.setLowBits(0);
2193 EXPECT_EQ(0u, i128lo0.countLeadingOnes());
2194 EXPECT_EQ(128u, i128lo0.countLeadingZeros());
2195 EXPECT_EQ(0u, i128lo0.getActiveBits());
2196 EXPECT_EQ(128u, i128lo0.countTrailingZeros());
2197 EXPECT_EQ(0u, i128lo0.countTrailingOnes());
2198 EXPECT_EQ(0u, i128lo0.countPopulation());
2199
2200 APInt i80lo79(80, 0);
2201 i80lo79.setLowBits(79);
2202 EXPECT_EQ(0u, i80lo79.countLeadingOnes());
2203 EXPECT_EQ(1u, i80lo79.countLeadingZeros());
2204 EXPECT_EQ(79u, i80lo79.getActiveBits());
2205 EXPECT_EQ(0u, i80lo79.countTrailingZeros());
2206 EXPECT_EQ(79u, i80lo79.countTrailingOnes());
2207 EXPECT_EQ(79u, i80lo79.countPopulation());
2208 }
2209
TEST(APIntTest,setHighBits)2210 TEST(APIntTest, setHighBits) {
2211 APInt i64hi32(64, 0);
2212 i64hi32.setHighBits(32);
2213 EXPECT_EQ(32u, i64hi32.countLeadingOnes());
2214 EXPECT_EQ(0u, i64hi32.countLeadingZeros());
2215 EXPECT_EQ(64u, i64hi32.getActiveBits());
2216 EXPECT_EQ(32u, i64hi32.countTrailingZeros());
2217 EXPECT_EQ(0u, i64hi32.countTrailingOnes());
2218 EXPECT_EQ(32u, i64hi32.countPopulation());
2219
2220 APInt i128hi64(128, 0);
2221 i128hi64.setHighBits(64);
2222 EXPECT_EQ(64u, i128hi64.countLeadingOnes());
2223 EXPECT_EQ(0u, i128hi64.countLeadingZeros());
2224 EXPECT_EQ(128u, i128hi64.getActiveBits());
2225 EXPECT_EQ(64u, i128hi64.countTrailingZeros());
2226 EXPECT_EQ(0u, i128hi64.countTrailingOnes());
2227 EXPECT_EQ(64u, i128hi64.countPopulation());
2228
2229 APInt i128hi24(128, 0);
2230 i128hi24.setHighBits(24);
2231 EXPECT_EQ(24u, i128hi24.countLeadingOnes());
2232 EXPECT_EQ(0u, i128hi24.countLeadingZeros());
2233 EXPECT_EQ(128u, i128hi24.getActiveBits());
2234 EXPECT_EQ(104u, i128hi24.countTrailingZeros());
2235 EXPECT_EQ(0u, i128hi24.countTrailingOnes());
2236 EXPECT_EQ(24u, i128hi24.countPopulation());
2237
2238 APInt i128hi104(128, 0);
2239 i128hi104.setHighBits(104);
2240 EXPECT_EQ(104u, i128hi104.countLeadingOnes());
2241 EXPECT_EQ(0u, i128hi104.countLeadingZeros());
2242 EXPECT_EQ(128u, i128hi104.getActiveBits());
2243 EXPECT_EQ(24u, i128hi104.countTrailingZeros());
2244 EXPECT_EQ(0u, i128hi104.countTrailingOnes());
2245 EXPECT_EQ(104u, i128hi104.countPopulation());
2246
2247 APInt i128hi0(128, 0);
2248 i128hi0.setHighBits(0);
2249 EXPECT_EQ(0u, i128hi0.countLeadingOnes());
2250 EXPECT_EQ(128u, i128hi0.countLeadingZeros());
2251 EXPECT_EQ(0u, i128hi0.getActiveBits());
2252 EXPECT_EQ(128u, i128hi0.countTrailingZeros());
2253 EXPECT_EQ(0u, i128hi0.countTrailingOnes());
2254 EXPECT_EQ(0u, i128hi0.countPopulation());
2255
2256 APInt i80hi1(80, 0);
2257 i80hi1.setHighBits(1);
2258 EXPECT_EQ(1u, i80hi1.countLeadingOnes());
2259 EXPECT_EQ(0u, i80hi1.countLeadingZeros());
2260 EXPECT_EQ(80u, i80hi1.getActiveBits());
2261 EXPECT_EQ(79u, i80hi1.countTrailingZeros());
2262 EXPECT_EQ(0u, i80hi1.countTrailingOnes());
2263 EXPECT_EQ(1u, i80hi1.countPopulation());
2264
2265 APInt i32hi16(32, 0);
2266 i32hi16.setHighBits(16);
2267 EXPECT_EQ(16u, i32hi16.countLeadingOnes());
2268 EXPECT_EQ(0u, i32hi16.countLeadingZeros());
2269 EXPECT_EQ(32u, i32hi16.getActiveBits());
2270 EXPECT_EQ(16u, i32hi16.countTrailingZeros());
2271 EXPECT_EQ(0u, i32hi16.countTrailingOnes());
2272 EXPECT_EQ(16u, i32hi16.countPopulation());
2273 }
2274
TEST(APIntTest,setBitsFrom)2275 TEST(APIntTest, setBitsFrom) {
2276 APInt i64from63(64, 0);
2277 i64from63.setBitsFrom(63);
2278 EXPECT_EQ(1u, i64from63.countLeadingOnes());
2279 EXPECT_EQ(0u, i64from63.countLeadingZeros());
2280 EXPECT_EQ(64u, i64from63.getActiveBits());
2281 EXPECT_EQ(63u, i64from63.countTrailingZeros());
2282 EXPECT_EQ(0u, i64from63.countTrailingOnes());
2283 EXPECT_EQ(1u, i64from63.countPopulation());
2284 }
2285
TEST(APIntTest,setAllBits)2286 TEST(APIntTest, setAllBits) {
2287 APInt i32(32, 0);
2288 i32.setAllBits();
2289 EXPECT_EQ(32u, i32.countLeadingOnes());
2290 EXPECT_EQ(0u, i32.countLeadingZeros());
2291 EXPECT_EQ(32u, i32.getActiveBits());
2292 EXPECT_EQ(0u, i32.countTrailingZeros());
2293 EXPECT_EQ(32u, i32.countTrailingOnes());
2294 EXPECT_EQ(32u, i32.countPopulation());
2295
2296 APInt i64(64, 0);
2297 i64.setAllBits();
2298 EXPECT_EQ(64u, i64.countLeadingOnes());
2299 EXPECT_EQ(0u, i64.countLeadingZeros());
2300 EXPECT_EQ(64u, i64.getActiveBits());
2301 EXPECT_EQ(0u, i64.countTrailingZeros());
2302 EXPECT_EQ(64u, i64.countTrailingOnes());
2303 EXPECT_EQ(64u, i64.countPopulation());
2304
2305 APInt i96(96, 0);
2306 i96.setAllBits();
2307 EXPECT_EQ(96u, i96.countLeadingOnes());
2308 EXPECT_EQ(0u, i96.countLeadingZeros());
2309 EXPECT_EQ(96u, i96.getActiveBits());
2310 EXPECT_EQ(0u, i96.countTrailingZeros());
2311 EXPECT_EQ(96u, i96.countTrailingOnes());
2312 EXPECT_EQ(96u, i96.countPopulation());
2313
2314 APInt i128(128, 0);
2315 i128.setAllBits();
2316 EXPECT_EQ(128u, i128.countLeadingOnes());
2317 EXPECT_EQ(0u, i128.countLeadingZeros());
2318 EXPECT_EQ(128u, i128.getActiveBits());
2319 EXPECT_EQ(0u, i128.countTrailingZeros());
2320 EXPECT_EQ(128u, i128.countTrailingOnes());
2321 EXPECT_EQ(128u, i128.countPopulation());
2322 }
2323
TEST(APIntTest,getLoBits)2324 TEST(APIntTest, getLoBits) {
2325 APInt i32(32, 0xfa);
2326 i32.setHighBits(1);
2327 EXPECT_EQ(0xa, i32.getLoBits(4));
2328 APInt i128(128, 0xfa);
2329 i128.setHighBits(1);
2330 EXPECT_EQ(0xa, i128.getLoBits(4));
2331 }
2332
TEST(APIntTest,getHiBits)2333 TEST(APIntTest, getHiBits) {
2334 APInt i32(32, 0xfa);
2335 i32.setHighBits(2);
2336 EXPECT_EQ(0xc, i32.getHiBits(4));
2337 APInt i128(128, 0xfa);
2338 i128.setHighBits(2);
2339 EXPECT_EQ(0xc, i128.getHiBits(4));
2340 }
2341
TEST(APIntTest,clearLowBits)2342 TEST(APIntTest, clearLowBits) {
2343 APInt i64hi32 = APInt::getAllOnesValue(64);
2344 i64hi32.clearLowBits(32);
2345 EXPECT_EQ(32u, i64hi32.countLeadingOnes());
2346 EXPECT_EQ(0u, i64hi32.countLeadingZeros());
2347 EXPECT_EQ(64u, i64hi32.getActiveBits());
2348 EXPECT_EQ(32u, i64hi32.countTrailingZeros());
2349 EXPECT_EQ(0u, i64hi32.countTrailingOnes());
2350 EXPECT_EQ(32u, i64hi32.countPopulation());
2351
2352 APInt i128hi64 = APInt::getAllOnesValue(128);
2353 i128hi64.clearLowBits(64);
2354 EXPECT_EQ(64u, i128hi64.countLeadingOnes());
2355 EXPECT_EQ(0u, i128hi64.countLeadingZeros());
2356 EXPECT_EQ(128u, i128hi64.getActiveBits());
2357 EXPECT_EQ(64u, i128hi64.countTrailingZeros());
2358 EXPECT_EQ(0u, i128hi64.countTrailingOnes());
2359 EXPECT_EQ(64u, i128hi64.countPopulation());
2360
2361 APInt i128hi24 = APInt::getAllOnesValue(128);
2362 i128hi24.clearLowBits(104);
2363 EXPECT_EQ(24u, i128hi24.countLeadingOnes());
2364 EXPECT_EQ(0u, i128hi24.countLeadingZeros());
2365 EXPECT_EQ(128u, i128hi24.getActiveBits());
2366 EXPECT_EQ(104u, i128hi24.countTrailingZeros());
2367 EXPECT_EQ(0u, i128hi24.countTrailingOnes());
2368 EXPECT_EQ(24u, i128hi24.countPopulation());
2369
2370 APInt i128hi104 = APInt::getAllOnesValue(128);
2371 i128hi104.clearLowBits(24);
2372 EXPECT_EQ(104u, i128hi104.countLeadingOnes());
2373 EXPECT_EQ(0u, i128hi104.countLeadingZeros());
2374 EXPECT_EQ(128u, i128hi104.getActiveBits());
2375 EXPECT_EQ(24u, i128hi104.countTrailingZeros());
2376 EXPECT_EQ(0u, i128hi104.countTrailingOnes());
2377 EXPECT_EQ(104u, i128hi104.countPopulation());
2378
2379 APInt i128hi0 = APInt::getAllOnesValue(128);
2380 i128hi0.clearLowBits(128);
2381 EXPECT_EQ(0u, i128hi0.countLeadingOnes());
2382 EXPECT_EQ(128u, i128hi0.countLeadingZeros());
2383 EXPECT_EQ(0u, i128hi0.getActiveBits());
2384 EXPECT_EQ(128u, i128hi0.countTrailingZeros());
2385 EXPECT_EQ(0u, i128hi0.countTrailingOnes());
2386 EXPECT_EQ(0u, i128hi0.countPopulation());
2387
2388 APInt i80hi1 = APInt::getAllOnesValue(80);
2389 i80hi1.clearLowBits(79);
2390 EXPECT_EQ(1u, i80hi1.countLeadingOnes());
2391 EXPECT_EQ(0u, i80hi1.countLeadingZeros());
2392 EXPECT_EQ(80u, i80hi1.getActiveBits());
2393 EXPECT_EQ(79u, i80hi1.countTrailingZeros());
2394 EXPECT_EQ(0u, i80hi1.countTrailingOnes());
2395 EXPECT_EQ(1u, i80hi1.countPopulation());
2396
2397 APInt i32hi16 = APInt::getAllOnesValue(32);
2398 i32hi16.clearLowBits(16);
2399 EXPECT_EQ(16u, i32hi16.countLeadingOnes());
2400 EXPECT_EQ(0u, i32hi16.countLeadingZeros());
2401 EXPECT_EQ(32u, i32hi16.getActiveBits());
2402 EXPECT_EQ(16u, i32hi16.countTrailingZeros());
2403 EXPECT_EQ(0u, i32hi16.countTrailingOnes());
2404 EXPECT_EQ(16u, i32hi16.countPopulation());
2405 }
2406
TEST(APIntTest,GCD)2407 TEST(APIntTest, GCD) {
2408 using APIntOps::GreatestCommonDivisor;
2409
2410 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) {
2411 // Test some corner cases near zero.
2412 APInt Zero(Bits, 0), One(Bits, 1);
2413 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero);
2414 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One);
2415 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One);
2416 EXPECT_EQ(GreatestCommonDivisor(One, One), One);
2417
2418 if (Bits > 1) {
2419 APInt Two(Bits, 2);
2420 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two);
2421 EXPECT_EQ(GreatestCommonDivisor(One, Two), One);
2422 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two);
2423
2424 // Test some corner cases near the highest representable value.
2425 APInt Max(Bits, 0);
2426 Max.setAllBits();
2427 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max);
2428 EXPECT_EQ(GreatestCommonDivisor(One, Max), One);
2429 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One);
2430 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max);
2431
2432 APInt MaxOver2 = Max.udiv(Two);
2433 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One);
2434 // Max - 1 == Max / 2 * 2, because Max is odd.
2435 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2);
2436 }
2437 }
2438
2439 // Compute the 20th Mersenne prime.
2440 const unsigned BitWidth = 4450;
2441 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423);
2442
2443 // 9931 and 123456 are coprime.
2444 APInt A = HugePrime * APInt(BitWidth, 9931);
2445 APInt B = HugePrime * APInt(BitWidth, 123456);
2446 APInt C = GreatestCommonDivisor(A, B);
2447 EXPECT_EQ(C, HugePrime);
2448 }
2449
TEST(APIntTest,LogicalRightShift)2450 TEST(APIntTest, LogicalRightShift) {
2451 APInt i256(APInt::getHighBitsSet(256, 2));
2452
2453 i256.lshrInPlace(1);
2454 EXPECT_EQ(1U, i256.countLeadingZeros());
2455 EXPECT_EQ(253U, i256.countTrailingZeros());
2456 EXPECT_EQ(2U, i256.countPopulation());
2457
2458 i256.lshrInPlace(62);
2459 EXPECT_EQ(63U, i256.countLeadingZeros());
2460 EXPECT_EQ(191U, i256.countTrailingZeros());
2461 EXPECT_EQ(2U, i256.countPopulation());
2462
2463 i256.lshrInPlace(65);
2464 EXPECT_EQ(128U, i256.countLeadingZeros());
2465 EXPECT_EQ(126U, i256.countTrailingZeros());
2466 EXPECT_EQ(2U, i256.countPopulation());
2467
2468 i256.lshrInPlace(64);
2469 EXPECT_EQ(192U, i256.countLeadingZeros());
2470 EXPECT_EQ(62U, i256.countTrailingZeros());
2471 EXPECT_EQ(2U, i256.countPopulation());
2472
2473 i256.lshrInPlace(63);
2474 EXPECT_EQ(255U, i256.countLeadingZeros());
2475 EXPECT_EQ(0U, i256.countTrailingZeros());
2476 EXPECT_EQ(1U, i256.countPopulation());
2477
2478 // Ensure we handle large shifts of multi-word.
2479 const APInt neg_one(128, static_cast<uint64_t>(-1), true);
2480 EXPECT_EQ(0, neg_one.lshr(128));
2481 }
2482
TEST(APIntTest,ArithmeticRightShift)2483 TEST(APIntTest, ArithmeticRightShift) {
2484 APInt i72(APInt::getHighBitsSet(72, 1));
2485 i72.ashrInPlace(46);
2486 EXPECT_EQ(47U, i72.countLeadingOnes());
2487 EXPECT_EQ(25U, i72.countTrailingZeros());
2488 EXPECT_EQ(47U, i72.countPopulation());
2489
2490 i72 = APInt::getHighBitsSet(72, 1);
2491 i72.ashrInPlace(64);
2492 EXPECT_EQ(65U, i72.countLeadingOnes());
2493 EXPECT_EQ(7U, i72.countTrailingZeros());
2494 EXPECT_EQ(65U, i72.countPopulation());
2495
2496 APInt i128(APInt::getHighBitsSet(128, 1));
2497 i128.ashrInPlace(64);
2498 EXPECT_EQ(65U, i128.countLeadingOnes());
2499 EXPECT_EQ(63U, i128.countTrailingZeros());
2500 EXPECT_EQ(65U, i128.countPopulation());
2501
2502 // Ensure we handle large shifts of multi-word.
2503 const APInt signmin32(APInt::getSignedMinValue(32));
2504 EXPECT_TRUE(signmin32.ashr(32).isAllOnesValue());
2505
2506 // Ensure we handle large shifts of multi-word.
2507 const APInt umax32(APInt::getSignedMaxValue(32));
2508 EXPECT_EQ(0, umax32.ashr(32));
2509
2510 // Ensure we handle large shifts of multi-word.
2511 const APInt signmin128(APInt::getSignedMinValue(128));
2512 EXPECT_TRUE(signmin128.ashr(128).isAllOnesValue());
2513
2514 // Ensure we handle large shifts of multi-word.
2515 const APInt umax128(APInt::getSignedMaxValue(128));
2516 EXPECT_EQ(0, umax128.ashr(128));
2517 }
2518
TEST(APIntTest,LeftShift)2519 TEST(APIntTest, LeftShift) {
2520 APInt i256(APInt::getLowBitsSet(256, 2));
2521
2522 i256 <<= 1;
2523 EXPECT_EQ(253U, i256.countLeadingZeros());
2524 EXPECT_EQ(1U, i256.countTrailingZeros());
2525 EXPECT_EQ(2U, i256.countPopulation());
2526
2527 i256 <<= 62;
2528 EXPECT_EQ(191U, i256.countLeadingZeros());
2529 EXPECT_EQ(63U, i256.countTrailingZeros());
2530 EXPECT_EQ(2U, i256.countPopulation());
2531
2532 i256 <<= 65;
2533 EXPECT_EQ(126U, i256.countLeadingZeros());
2534 EXPECT_EQ(128U, i256.countTrailingZeros());
2535 EXPECT_EQ(2U, i256.countPopulation());
2536
2537 i256 <<= 64;
2538 EXPECT_EQ(62U, i256.countLeadingZeros());
2539 EXPECT_EQ(192U, i256.countTrailingZeros());
2540 EXPECT_EQ(2U, i256.countPopulation());
2541
2542 i256 <<= 63;
2543 EXPECT_EQ(0U, i256.countLeadingZeros());
2544 EXPECT_EQ(255U, i256.countTrailingZeros());
2545 EXPECT_EQ(1U, i256.countPopulation());
2546
2547 // Ensure we handle large shifts of multi-word.
2548 const APInt neg_one(128, static_cast<uint64_t>(-1), true);
2549 EXPECT_EQ(0, neg_one.shl(128));
2550 }
2551
TEST(APIntTest,isSubsetOf)2552 TEST(APIntTest, isSubsetOf) {
2553 APInt i32_1(32, 1);
2554 APInt i32_2(32, 2);
2555 APInt i32_3(32, 3);
2556 EXPECT_FALSE(i32_3.isSubsetOf(i32_1));
2557 EXPECT_TRUE(i32_1.isSubsetOf(i32_3));
2558 EXPECT_FALSE(i32_2.isSubsetOf(i32_1));
2559 EXPECT_FALSE(i32_1.isSubsetOf(i32_2));
2560 EXPECT_TRUE(i32_3.isSubsetOf(i32_3));
2561
2562 APInt i128_1(128, 1);
2563 APInt i128_2(128, 2);
2564 APInt i128_3(128, 3);
2565 EXPECT_FALSE(i128_3.isSubsetOf(i128_1));
2566 EXPECT_TRUE(i128_1.isSubsetOf(i128_3));
2567 EXPECT_FALSE(i128_2.isSubsetOf(i128_1));
2568 EXPECT_FALSE(i128_1.isSubsetOf(i128_2));
2569 EXPECT_TRUE(i128_3.isSubsetOf(i128_3));
2570
2571 i128_1 <<= 64;
2572 i128_2 <<= 64;
2573 i128_3 <<= 64;
2574 EXPECT_FALSE(i128_3.isSubsetOf(i128_1));
2575 EXPECT_TRUE(i128_1.isSubsetOf(i128_3));
2576 EXPECT_FALSE(i128_2.isSubsetOf(i128_1));
2577 EXPECT_FALSE(i128_1.isSubsetOf(i128_2));
2578 EXPECT_TRUE(i128_3.isSubsetOf(i128_3));
2579 }
2580
TEST(APIntTest,sext)2581 TEST(APIntTest, sext) {
2582 EXPECT_EQ(0, APInt(1, 0).sext(64));
2583 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64));
2584
2585 APInt i32_max(APInt::getSignedMaxValue(32).sext(63));
2586 EXPECT_EQ(32U, i32_max.countLeadingZeros());
2587 EXPECT_EQ(0U, i32_max.countTrailingZeros());
2588 EXPECT_EQ(31U, i32_max.countPopulation());
2589
2590 APInt i32_min(APInt::getSignedMinValue(32).sext(63));
2591 EXPECT_EQ(32U, i32_min.countLeadingOnes());
2592 EXPECT_EQ(31U, i32_min.countTrailingZeros());
2593 EXPECT_EQ(32U, i32_min.countPopulation());
2594
2595 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63));
2596 EXPECT_EQ(63U, i32_neg1.countLeadingOnes());
2597 EXPECT_EQ(0U, i32_neg1.countTrailingZeros());
2598 EXPECT_EQ(63U, i32_neg1.countPopulation());
2599 }
2600
TEST(APIntTest,multiply)2601 TEST(APIntTest, multiply) {
2602 APInt i64(64, 1234);
2603
2604 EXPECT_EQ(7006652, i64 * 5678);
2605 EXPECT_EQ(7006652, 5678 * i64);
2606
2607 APInt i128 = APInt::getOneBitSet(128, 64);
2608 APInt i128_1234(128, 1234);
2609 i128_1234 <<= 64;
2610 EXPECT_EQ(i128_1234, i128 * 1234);
2611 EXPECT_EQ(i128_1234, 1234 * i128);
2612
2613 APInt i96 = APInt::getOneBitSet(96, 64);
2614 i96 *= ~0ULL;
2615 EXPECT_EQ(32U, i96.countLeadingOnes());
2616 EXPECT_EQ(32U, i96.countPopulation());
2617 EXPECT_EQ(64U, i96.countTrailingZeros());
2618 }
2619
TEST(APIntTest,RoundingUDiv)2620 TEST(APIntTest, RoundingUDiv) {
2621 for (uint64_t Ai = 1; Ai <= 255; Ai++) {
2622 APInt A(8, Ai);
2623 APInt Zero(8, 0);
2624 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP));
2625 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN));
2626 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO));
2627
2628 for (uint64_t Bi = 1; Bi <= 255; Bi++) {
2629 APInt B(8, Bi);
2630 {
2631 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP);
2632 auto Prod = Quo.zext(16) * B.zext(16);
2633 EXPECT_TRUE(Prod.uge(Ai));
2634 if (Prod.ugt(Ai)) {
2635 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai));
2636 }
2637 }
2638 {
2639 APInt Quo = A.udiv(B);
2640 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO));
2641 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN));
2642 }
2643 }
2644 }
2645 }
2646
TEST(APIntTest,RoundingSDiv)2647 TEST(APIntTest, RoundingSDiv) {
2648 for (int64_t Ai = -128; Ai <= 127; Ai++) {
2649 APInt A(8, Ai);
2650
2651 if (Ai != 0) {
2652 APInt Zero(8, 0);
2653 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP));
2654 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN));
2655 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO));
2656 }
2657
2658 for (int64_t Bi = -128; Bi <= 127; Bi++) {
2659 if (Bi == 0)
2660 continue;
2661
2662 APInt B(8, Bi);
2663 APInt QuoTowardZero = A.sdiv(B);
2664 {
2665 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP);
2666 if (A.srem(B).isNullValue()) {
2667 EXPECT_EQ(QuoTowardZero, Quo);
2668 } else if (A.isNegative() !=
2669 B.isNegative()) { // if the math quotient is negative.
2670 EXPECT_EQ(QuoTowardZero, Quo);
2671 } else {
2672 EXPECT_EQ(QuoTowardZero + 1, Quo);
2673 }
2674 }
2675 {
2676 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN);
2677 if (A.srem(B).isNullValue()) {
2678 EXPECT_EQ(QuoTowardZero, Quo);
2679 } else if (A.isNegative() !=
2680 B.isNegative()) { // if the math quotient is negative.
2681 EXPECT_EQ(QuoTowardZero - 1, Quo);
2682 } else {
2683 EXPECT_EQ(QuoTowardZero, Quo);
2684 }
2685 }
2686 EXPECT_EQ(QuoTowardZero,
2687 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO));
2688 }
2689 }
2690 }
2691
TEST(APIntTest,umul_ov)2692 TEST(APIntTest, umul_ov) {
2693 const std::pair<uint64_t, uint64_t> Overflows[] = {
2694 {0x8000000000000000, 2},
2695 {0x5555555555555556, 3},
2696 {4294967296, 4294967296},
2697 {4294967295, 4294967298},
2698 };
2699 const std::pair<uint64_t, uint64_t> NonOverflows[] = {
2700 {0x7fffffffffffffff, 2},
2701 {0x5555555555555555, 3},
2702 {4294967295, 4294967297},
2703 };
2704
2705 bool Overflow;
2706 for (auto &X : Overflows) {
2707 APInt A(64, X.first);
2708 APInt B(64, X.second);
2709 (void)A.umul_ov(B, Overflow);
2710 EXPECT_TRUE(Overflow);
2711 }
2712 for (auto &X : NonOverflows) {
2713 APInt A(64, X.first);
2714 APInt B(64, X.second);
2715 (void)A.umul_ov(B, Overflow);
2716 EXPECT_FALSE(Overflow);
2717 }
2718
2719 for (unsigned Bits = 1; Bits <= 5; ++Bits)
2720 for (unsigned A = 0; A != 1u << Bits; ++A)
2721 for (unsigned B = 0; B != 1u << Bits; ++B) {
2722 APInt C = APInt(Bits, A).umul_ov(APInt(Bits, B), Overflow);
2723 APInt D = APInt(2 * Bits, A) * APInt(2 * Bits, B);
2724 EXPECT_TRUE(D.getHiBits(Bits).isNullValue() != Overflow);
2725 }
2726 }
2727
TEST(APIntTest,SolveQuadraticEquationWrap)2728 TEST(APIntTest, SolveQuadraticEquationWrap) {
2729 // Verify that "Solution" is the first non-negative integer that solves
2730 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution
2731 // as calculated by SolveQuadraticEquationWrap.
2732 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) {
2733 int Mask = (1 << Width) - 1;
2734
2735 // Solution should be non-negative.
2736 EXPECT_GE(Solution, 0);
2737
2738 auto OverflowBits = [] (int64_t V, unsigned W) {
2739 return V & -(1 << W);
2740 };
2741
2742 int64_t Over0 = OverflowBits(C, Width);
2743
2744 auto IsZeroOrOverflow = [&] (int X) {
2745 int64_t ValueAtX = A*X*X + B*X + C;
2746 int64_t OverX = OverflowBits(ValueAtX, Width);
2747 return (ValueAtX & Mask) == 0 || OverX != Over0;
2748 };
2749
2750 auto EquationToString = [&] (const char *X_str) {
2751 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) +
2752 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") +
2753 Twine(Width)).str();
2754 };
2755
2756 auto IsSolution = [&] (const char *X_str, int X) {
2757 if (IsZeroOrOverflow(X))
2758 return ::testing::AssertionSuccess()
2759 << X << " is a solution of " << EquationToString(X_str);
2760 return ::testing::AssertionFailure()
2761 << X << " is not an expected solution of "
2762 << EquationToString(X_str);
2763 };
2764
2765 auto IsNotSolution = [&] (const char *X_str, int X) {
2766 if (!IsZeroOrOverflow(X))
2767 return ::testing::AssertionSuccess()
2768 << X << " is not a solution of " << EquationToString(X_str);
2769 return ::testing::AssertionFailure()
2770 << X << " is an unexpected solution of "
2771 << EquationToString(X_str);
2772 };
2773
2774 // This is the important part: make sure that there is no solution that
2775 // is less than the calculated one.
2776 if (Solution > 0) {
2777 for (int X = 1; X < Solution-1; ++X)
2778 EXPECT_PRED_FORMAT1(IsNotSolution, X);
2779 }
2780
2781 // Verify that the calculated solution is indeed a solution.
2782 EXPECT_PRED_FORMAT1(IsSolution, Solution);
2783 };
2784
2785 // Generate all possible quadratic equations with Width-bit wide integer
2786 // coefficients, get the solution from SolveQuadraticEquationWrap, and
2787 // verify that the solution is correct.
2788 auto Iterate = [&] (unsigned Width) {
2789 assert(1 < Width && Width < 32);
2790 int Low = -(1 << (Width-1));
2791 int High = (1 << (Width-1));
2792
2793 for (int A = Low; A != High; ++A) {
2794 if (A == 0)
2795 continue;
2796 for (int B = Low; B != High; ++B) {
2797 for (int C = Low; C != High; ++C) {
2798 Optional<APInt> S = APIntOps::SolveQuadraticEquationWrap(
2799 APInt(Width, A), APInt(Width, B),
2800 APInt(Width, C), Width);
2801 if (S.hasValue())
2802 Validate(A, B, C, Width, S->getSExtValue());
2803 }
2804 }
2805 }
2806 };
2807
2808 // Test all widths in [2..6].
2809 for (unsigned i = 2; i <= 6; ++i)
2810 Iterate(i);
2811 }
2812
TEST(APIntTest,MultiplicativeInverseExaustive)2813 TEST(APIntTest, MultiplicativeInverseExaustive) {
2814 for (unsigned BitWidth = 1; BitWidth <= 16; ++BitWidth) {
2815 for (unsigned Value = 0; Value < (1u << BitWidth); ++Value) {
2816 APInt V = APInt(BitWidth, Value);
2817 APInt MulInv =
2818 V.zext(BitWidth + 1)
2819 .multiplicativeInverse(APInt::getSignedMinValue(BitWidth + 1))
2820 .trunc(BitWidth);
2821 APInt One = V * MulInv;
2822 if (!V.isNullValue() && V.countTrailingZeros() == 0) {
2823 // Multiplicative inverse exists for all odd numbers.
2824 EXPECT_TRUE(One.isOneValue());
2825 } else {
2826 // Multiplicative inverse does not exist for even numbers (and 0).
2827 EXPECT_TRUE(MulInv.isNullValue());
2828 }
2829 }
2830 }
2831 }
2832
TEST(APIntTest,GetMostSignificantDifferentBit)2833 TEST(APIntTest, GetMostSignificantDifferentBit) {
2834 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)),
2835 llvm::None);
2836 EXPECT_EQ(
2837 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)),
2838 llvm::None);
2839 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)),
2840 0u);
2841 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)),
2842 1u);
2843 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)),
2844 1u);
2845 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)),
2846 0u);
2847 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)),
2848 llvm::None);
2849 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)),
2850 1u);
2851 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)),
2852 1u);
2853 EXPECT_EQ(
2854 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)),
2855 6u);
2856 }
2857
TEST(APIntTest,GetMostSignificantDifferentBitExaustive)2858 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) {
2859 auto GetHighestDifferentBitBruteforce =
2860 [](const APInt &V0, const APInt &V1) -> llvm::Optional<unsigned> {
2861 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth");
2862 if (V0 == V1)
2863 return llvm::None; // Bitwise identical.
2864 // There is a mismatch. Let's find the most significant different bit.
2865 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) {
2866 if (V0[Bit] == V1[Bit])
2867 continue;
2868 return Bit;
2869 }
2870 llvm_unreachable("Must have found bit mismatch.");
2871 };
2872
2873 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) {
2874 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) {
2875 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) {
2876 APInt A = APInt(BitWidth, V0);
2877 APInt B = APInt(BitWidth, V1);
2878
2879 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B);
2880 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B));
2881
2882 if (!Bit.hasValue())
2883 EXPECT_EQ(A, B);
2884 else {
2885 EXPECT_NE(A, B);
2886 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) {
2887 APInt Adash = A;
2888 Adash.clearLowBits(NumLowBits);
2889 APInt Bdash = B;
2890 Bdash.clearLowBits(NumLowBits);
2891 // Clearing only low bits up to and including *Bit is sufficient
2892 // to make values equal.
2893 if (NumLowBits >= 1 + *Bit)
2894 EXPECT_EQ(Adash, Bdash);
2895 else
2896 EXPECT_NE(Adash, Bdash);
2897 }
2898 }
2899 }
2900 }
2901 }
2902 }
2903
TEST(APIntTest,SignbitZeroChecks)2904 TEST(APIntTest, SignbitZeroChecks) {
2905 EXPECT_TRUE(APInt(8, -1).isNegative());
2906 EXPECT_FALSE(APInt(8, -1).isNonNegative());
2907 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive());
2908 EXPECT_TRUE(APInt(8, -1).isNonPositive());
2909
2910 EXPECT_FALSE(APInt(8, 0).isNegative());
2911 EXPECT_TRUE(APInt(8, 0).isNonNegative());
2912 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive());
2913 EXPECT_TRUE(APInt(8, 0).isNonPositive());
2914
2915 EXPECT_FALSE(APInt(8, 1).isNegative());
2916 EXPECT_TRUE(APInt(8, 1).isNonNegative());
2917 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive());
2918 EXPECT_FALSE(APInt(8, 1).isNonPositive());
2919 }
2920
2921 } // end anonymous namespace
2922