1//===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include <ostream>
11#include "gtest/gtest.h"
12#include "llvm/ADT/APInt.h"
13#include "llvm/ADT/SmallString.h"
14
15using namespace llvm;
16
17namespace {
18
19// Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
20TEST(APIntTest, ShiftLeftByZero) {
21  APInt One = APInt::getNullValue(65) + 1;
22  APInt Shl = One.shl(0);
23  EXPECT_TRUE(Shl[0]);
24  EXPECT_FALSE(Shl[1]);
25}
26
27TEST(APIntTest, i128_NegativeCount) {
28  APInt Minus3(128, static_cast<uint64_t>(-3), true);
29  EXPECT_EQ(126u, Minus3.countLeadingOnes());
30  EXPECT_EQ(-3, Minus3.getSExtValue());
31
32  APInt Minus1(128, static_cast<uint64_t>(-1), true);
33  EXPECT_EQ(0u, Minus1.countLeadingZeros());
34  EXPECT_EQ(128u, Minus1.countLeadingOnes());
35  EXPECT_EQ(128u, Minus1.getActiveBits());
36  EXPECT_EQ(0u, Minus1.countTrailingZeros());
37  EXPECT_EQ(128u, Minus1.countTrailingOnes());
38  EXPECT_EQ(128u, Minus1.countPopulation());
39  EXPECT_EQ(-1, Minus1.getSExtValue());
40}
41
42// XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it.
43#if defined(__llvm__) || !defined(__FreeBSD__)
44
45TEST(APIntTest, i33_Count) {
46  APInt i33minus2(33, static_cast<uint64_t>(-2), true);
47  EXPECT_EQ(0u, i33minus2.countLeadingZeros());
48  EXPECT_EQ(32u, i33minus2.countLeadingOnes());
49  EXPECT_EQ(33u, i33minus2.getActiveBits());
50  EXPECT_EQ(1u, i33minus2.countTrailingZeros());
51  EXPECT_EQ(32u, i33minus2.countPopulation());
52  EXPECT_EQ(-2, i33minus2.getSExtValue());
53  EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
54}
55
56#endif
57
58TEST(APIntTest, i65_Count) {
59  APInt i65minus(65, 0, true);
60  i65minus.setBit(64);
61  EXPECT_EQ(0u, i65minus.countLeadingZeros());
62  EXPECT_EQ(1u, i65minus.countLeadingOnes());
63  EXPECT_EQ(65u, i65minus.getActiveBits());
64  EXPECT_EQ(64u, i65minus.countTrailingZeros());
65  EXPECT_EQ(1u, i65minus.countPopulation());
66}
67
68TEST(APIntTest, i128_PositiveCount) {
69  APInt u128max = APInt::getAllOnesValue(128);
70  EXPECT_EQ(128u, u128max.countLeadingOnes());
71  EXPECT_EQ(0u, u128max.countLeadingZeros());
72  EXPECT_EQ(128u, u128max.getActiveBits());
73  EXPECT_EQ(0u, u128max.countTrailingZeros());
74  EXPECT_EQ(128u, u128max.countTrailingOnes());
75  EXPECT_EQ(128u, u128max.countPopulation());
76
77  APInt u64max(128, static_cast<uint64_t>(-1), false);
78  EXPECT_EQ(64u, u64max.countLeadingZeros());
79  EXPECT_EQ(0u, u64max.countLeadingOnes());
80  EXPECT_EQ(64u, u64max.getActiveBits());
81  EXPECT_EQ(0u, u64max.countTrailingZeros());
82  EXPECT_EQ(64u, u64max.countTrailingOnes());
83  EXPECT_EQ(64u, u64max.countPopulation());
84  EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
85
86  APInt zero(128, 0, true);
87  EXPECT_EQ(128u, zero.countLeadingZeros());
88  EXPECT_EQ(0u, zero.countLeadingOnes());
89  EXPECT_EQ(0u, zero.getActiveBits());
90  EXPECT_EQ(128u, zero.countTrailingZeros());
91  EXPECT_EQ(0u, zero.countTrailingOnes());
92  EXPECT_EQ(0u, zero.countPopulation());
93  EXPECT_EQ(0u, zero.getSExtValue());
94  EXPECT_EQ(0u, zero.getZExtValue());
95
96  APInt one(128, 1, true);
97  EXPECT_EQ(127u, one.countLeadingZeros());
98  EXPECT_EQ(0u, one.countLeadingOnes());
99  EXPECT_EQ(1u, one.getActiveBits());
100  EXPECT_EQ(0u, one.countTrailingZeros());
101  EXPECT_EQ(1u, one.countTrailingOnes());
102  EXPECT_EQ(1u, one.countPopulation());
103  EXPECT_EQ(1, one.getSExtValue());
104  EXPECT_EQ(1u, one.getZExtValue());
105}
106
107TEST(APIntTest, i1) {
108  const APInt neg_two(1, static_cast<uint64_t>(-2), true);
109  const APInt neg_one(1, static_cast<uint64_t>(-1), true);
110  const APInt zero(1, 0);
111  const APInt one(1, 1);
112  const APInt two(1, 2);
113
114  EXPECT_EQ(0, neg_two.getSExtValue());
115  EXPECT_EQ(-1, neg_one.getSExtValue());
116  EXPECT_EQ(1u, neg_one.getZExtValue());
117  EXPECT_EQ(0u, zero.getZExtValue());
118  EXPECT_EQ(-1, one.getSExtValue());
119  EXPECT_EQ(1u, one.getZExtValue());
120  EXPECT_EQ(0u, two.getZExtValue());
121  EXPECT_EQ(0, two.getSExtValue());
122
123  // Basic equalities for 1-bit values.
124  EXPECT_EQ(zero, two);
125  EXPECT_EQ(zero, neg_two);
126  EXPECT_EQ(one, neg_one);
127  EXPECT_EQ(two, neg_two);
128
129  // Additions.
130  EXPECT_EQ(two, one + one);
131  EXPECT_EQ(zero, neg_one + one);
132  EXPECT_EQ(neg_two, neg_one + neg_one);
133
134  // Subtractions.
135  EXPECT_EQ(neg_two, neg_one - one);
136  EXPECT_EQ(two, one - neg_one);
137  EXPECT_EQ(zero, one - one);
138
139  // Shifts.
140  EXPECT_EQ(zero, one << one);
141  EXPECT_EQ(one, one << zero);
142  EXPECT_EQ(zero, one.shl(1));
143  EXPECT_EQ(one, one.shl(0));
144  EXPECT_EQ(zero, one.lshr(1));
145  EXPECT_EQ(zero, one.ashr(1));
146
147  // Multiplies.
148  EXPECT_EQ(neg_one, neg_one * one);
149  EXPECT_EQ(neg_one, one * neg_one);
150  EXPECT_EQ(one, neg_one * neg_one);
151  EXPECT_EQ(one, one * one);
152
153  // Divides.
154  EXPECT_EQ(neg_one, one.sdiv(neg_one));
155  EXPECT_EQ(neg_one, neg_one.sdiv(one));
156  EXPECT_EQ(one, neg_one.sdiv(neg_one));
157  EXPECT_EQ(one, one.sdiv(one));
158
159  EXPECT_EQ(neg_one, one.udiv(neg_one));
160  EXPECT_EQ(neg_one, neg_one.udiv(one));
161  EXPECT_EQ(one, neg_one.udiv(neg_one));
162  EXPECT_EQ(one, one.udiv(one));
163
164  // Remainders.
165  EXPECT_EQ(zero, neg_one.srem(one));
166  EXPECT_EQ(zero, neg_one.urem(one));
167  EXPECT_EQ(zero, one.srem(neg_one));
168}
169
170TEST(APIntTest, fromString) {
171  EXPECT_EQ(APInt(32, 0), APInt(32,   "0", 2));
172  EXPECT_EQ(APInt(32, 1), APInt(32,   "1", 2));
173  EXPECT_EQ(APInt(32, 2), APInt(32,  "10", 2));
174  EXPECT_EQ(APInt(32, 3), APInt(32,  "11", 2));
175  EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2));
176
177  EXPECT_EQ(APInt(32, 0), APInt(32,   "+0", 2));
178  EXPECT_EQ(APInt(32, 1), APInt(32,   "+1", 2));
179  EXPECT_EQ(APInt(32, 2), APInt(32,  "+10", 2));
180  EXPECT_EQ(APInt(32, 3), APInt(32,  "+11", 2));
181  EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2));
182
183  EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32,   "-0", 2));
184  EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32,   "-1", 2));
185  EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32,  "-10", 2));
186  EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32,  "-11", 2));
187  EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2));
188
189
190  EXPECT_EQ(APInt(32,  0), APInt(32,  "0",  8));
191  EXPECT_EQ(APInt(32,  1), APInt(32,  "1",  8));
192  EXPECT_EQ(APInt(32,  7), APInt(32,  "7",  8));
193  EXPECT_EQ(APInt(32,  8), APInt(32,  "10", 8));
194  EXPECT_EQ(APInt(32, 15), APInt(32,  "17", 8));
195  EXPECT_EQ(APInt(32, 16), APInt(32,  "20", 8));
196
197  EXPECT_EQ(APInt(32,  +0), APInt(32,  "+0",  8));
198  EXPECT_EQ(APInt(32,  +1), APInt(32,  "+1",  8));
199  EXPECT_EQ(APInt(32,  +7), APInt(32,  "+7",  8));
200  EXPECT_EQ(APInt(32,  +8), APInt(32,  "+10", 8));
201  EXPECT_EQ(APInt(32, +15), APInt(32,  "+17", 8));
202  EXPECT_EQ(APInt(32, +16), APInt(32,  "+20", 8));
203
204  EXPECT_EQ(APInt(32,  uint64_t(-0LL)), APInt(32,  "-0",  8));
205  EXPECT_EQ(APInt(32,  uint64_t(-1LL)), APInt(32,  "-1",  8));
206  EXPECT_EQ(APInt(32,  uint64_t(-7LL)), APInt(32,  "-7",  8));
207  EXPECT_EQ(APInt(32,  uint64_t(-8LL)), APInt(32,  "-10", 8));
208  EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32,  "-17", 8));
209  EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32,  "-20", 8));
210
211
212  EXPECT_EQ(APInt(32,  0), APInt(32,  "0", 10));
213  EXPECT_EQ(APInt(32,  1), APInt(32,  "1", 10));
214  EXPECT_EQ(APInt(32,  9), APInt(32,  "9", 10));
215  EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10));
216  EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10));
217  EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10));
218
219  EXPECT_EQ(APInt(32,  uint64_t(-0LL)), APInt(32,  "-0", 10));
220  EXPECT_EQ(APInt(32,  uint64_t(-1LL)), APInt(32,  "-1", 10));
221  EXPECT_EQ(APInt(32,  uint64_t(-9LL)), APInt(32,  "-9", 10));
222  EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10));
223  EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10));
224  EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10));
225
226
227  EXPECT_EQ(APInt(32,  0), APInt(32,  "0", 16));
228  EXPECT_EQ(APInt(32,  1), APInt(32,  "1", 16));
229  EXPECT_EQ(APInt(32, 15), APInt(32,  "F", 16));
230  EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16));
231  EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16));
232  EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16));
233
234  EXPECT_EQ(APInt(32,  uint64_t(-0LL)), APInt(32,  "-0", 16));
235  EXPECT_EQ(APInt(32,  uint64_t(-1LL)), APInt(32,  "-1", 16));
236  EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32,  "-F", 16));
237  EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16));
238  EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16));
239  EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16));
240
241  EXPECT_EQ(APInt(32,  0), APInt(32,  "0", 36));
242  EXPECT_EQ(APInt(32,  1), APInt(32,  "1", 36));
243  EXPECT_EQ(APInt(32, 35), APInt(32,  "Z", 36));
244  EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36));
245  EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36));
246  EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36));
247
248  EXPECT_EQ(APInt(32,  uint64_t(-0LL)), APInt(32,  "-0", 36));
249  EXPECT_EQ(APInt(32,  uint64_t(-1LL)), APInt(32,  "-1", 36));
250  EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32,  "-Z", 36));
251  EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36));
252  EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36));
253  EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36));
254}
255
256TEST(APIntTest, FromArray) {
257  EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1)));
258}
259
260TEST(APIntTest, StringBitsNeeded2) {
261  EXPECT_EQ(1U, APInt::getBitsNeeded(  "0", 2));
262  EXPECT_EQ(1U, APInt::getBitsNeeded(  "1", 2));
263  EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2));
264  EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2));
265  EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2));
266
267  EXPECT_EQ(1U, APInt::getBitsNeeded(  "+0", 2));
268  EXPECT_EQ(1U, APInt::getBitsNeeded(  "+1", 2));
269  EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2));
270  EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2));
271  EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2));
272
273  EXPECT_EQ(2U, APInt::getBitsNeeded(  "-0", 2));
274  EXPECT_EQ(2U, APInt::getBitsNeeded(  "-1", 2));
275  EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2));
276  EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2));
277  EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2));
278}
279
280TEST(APIntTest, StringBitsNeeded8) {
281  EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8));
282  EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8));
283  EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8));
284  EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8));
285  EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8));
286
287  EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8));
288  EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8));
289  EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8));
290  EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8));
291  EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8));
292
293  EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8));
294  EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8));
295  EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8));
296  EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8));
297  EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8));
298}
299
300TEST(APIntTest, StringBitsNeeded10) {
301  EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10));
302  EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10));
303  EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10));
304  EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10));
305  EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10));
306  EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10));
307
308  EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10));
309  EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10));
310  EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10));
311  EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10));
312  EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10));
313
314  EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10));
315  EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10));
316  EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
317  EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
318  EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
319}
320
321TEST(APIntTest, StringBitsNeeded16) {
322  EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16));
323  EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16));
324  EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16));
325  EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16));
326  EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16));
327
328  EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16));
329  EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16));
330  EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16));
331  EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16));
332  EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16));
333
334  EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16));
335  EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16));
336  EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16));
337  EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16));
338  EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
339}
340
341TEST(APIntTest, toString) {
342  SmallString<16> S;
343  bool isSigned;
344
345  APInt(8, 0).toString(S, 2, true, true);
346  EXPECT_EQ(S.str().str(), "0b0");
347  S.clear();
348  APInt(8, 0).toString(S, 8, true, true);
349  EXPECT_EQ(S.str().str(), "00");
350  S.clear();
351  APInt(8, 0).toString(S, 10, true, true);
352  EXPECT_EQ(S.str().str(), "0");
353  S.clear();
354  APInt(8, 0).toString(S, 16, true, true);
355  EXPECT_EQ(S.str().str(), "0x0");
356  S.clear();
357  APInt(8, 0).toString(S, 36, true, true);
358  EXPECT_EQ(S.str().str(), "0");
359  S.clear();
360
361  isSigned = false;
362  APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
363  EXPECT_EQ(S.str().str(), "0b11111111");
364  S.clear();
365  APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
366  EXPECT_EQ(S.str().str(), "0377");
367  S.clear();
368  APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
369  EXPECT_EQ(S.str().str(), "255");
370  S.clear();
371  APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
372  EXPECT_EQ(S.str().str(), "0xFF");
373  S.clear();
374  APInt(8, 255, isSigned).toString(S, 36, isSigned, true);
375  EXPECT_EQ(S.str().str(), "73");
376  S.clear();
377
378  isSigned = true;
379  APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
380  EXPECT_EQ(S.str().str(), "-0b1");
381  S.clear();
382  APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
383  EXPECT_EQ(S.str().str(), "-01");
384  S.clear();
385  APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
386  EXPECT_EQ(S.str().str(), "-1");
387  S.clear();
388  APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
389  EXPECT_EQ(S.str().str(), "-0x1");
390  S.clear();
391  APInt(8, 255, isSigned).toString(S, 36, isSigned, true);
392  EXPECT_EQ(S.str().str(), "-1");
393  S.clear();
394}
395
396TEST(APIntTest, Log2) {
397  EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
398  EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);
399  EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1);
400  EXPECT_EQ(APInt(15, 8).logBase2(), 3U);
401  EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U);
402  EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3);
403  EXPECT_EQ(APInt(15, 9).logBase2(), 3U);
404  EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U);
405  EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1);
406}
407
408TEST(APIntTest, magic) {
409  EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16));
410  EXPECT_EQ(APInt(32, 3).magic().s, 0U);
411  EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16));
412  EXPECT_EQ(APInt(32, 5).magic().s, 1U);
413  EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16));
414  EXPECT_EQ(APInt(32, 7).magic().s, 2U);
415}
416
417TEST(APIntTest, magicu) {
418  EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16));
419  EXPECT_EQ(APInt(32, 3).magicu().s, 1U);
420  EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16));
421  EXPECT_EQ(APInt(32, 5).magicu().s, 2U);
422  EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16));
423  EXPECT_EQ(APInt(32, 7).magicu().s, 3U);
424  EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16));
425  EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U);
426}
427
428#ifdef GTEST_HAS_DEATH_TEST
429#ifndef NDEBUG
430TEST(APIntTest, StringDeath) {
431  EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small");
432  EXPECT_DEATH(APInt(32, "", 0), "Invalid string length");
433  EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!");
434  EXPECT_DEATH(APInt(32, "", 10), "Invalid string length");
435  EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value.");
436  EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width");
437  EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length");
438  EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string");
439  EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string");
440}
441#endif
442#endif
443
444TEST(APIntTest, mul_clear) {
445  APInt ValA(65, -1ULL);
446  APInt ValB(65, 4);
447  APInt ValC(65, 0);
448  ValC = ValA * ValB;
449  ValA *= ValB;
450  EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
451}
452
453}
454