1//===- llvm/unittest/Support/ConstantRangeTest.cpp - ConstantRange tests --===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "llvm/Support/ConstantRange.h"
11#include "llvm/Instructions.h"
12
13#include "gtest/gtest.h"
14
15using namespace llvm;
16
17namespace {
18
19class ConstantRangeTest : public ::testing::Test {
20protected:
21  static ConstantRange Full;
22  static ConstantRange Empty;
23  static ConstantRange One;
24  static ConstantRange Some;
25  static ConstantRange Wrap;
26};
27
28ConstantRange ConstantRangeTest::Full(16);
29ConstantRange ConstantRangeTest::Empty(16, false);
30ConstantRange ConstantRangeTest::One(APInt(16, 0xa));
31ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa));
32ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa));
33
34TEST_F(ConstantRangeTest, Basics) {
35  EXPECT_TRUE(Full.isFullSet());
36  EXPECT_FALSE(Full.isEmptySet());
37  EXPECT_TRUE(Full.inverse().isEmptySet());
38  EXPECT_FALSE(Full.isWrappedSet());
39  EXPECT_TRUE(Full.contains(APInt(16, 0x0)));
40  EXPECT_TRUE(Full.contains(APInt(16, 0x9)));
41  EXPECT_TRUE(Full.contains(APInt(16, 0xa)));
42  EXPECT_TRUE(Full.contains(APInt(16, 0xaa9)));
43  EXPECT_TRUE(Full.contains(APInt(16, 0xaaa)));
44
45  EXPECT_FALSE(Empty.isFullSet());
46  EXPECT_TRUE(Empty.isEmptySet());
47  EXPECT_TRUE(Empty.inverse().isFullSet());
48  EXPECT_FALSE(Empty.isWrappedSet());
49  EXPECT_FALSE(Empty.contains(APInt(16, 0x0)));
50  EXPECT_FALSE(Empty.contains(APInt(16, 0x9)));
51  EXPECT_FALSE(Empty.contains(APInt(16, 0xa)));
52  EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9)));
53  EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa)));
54
55  EXPECT_FALSE(One.isFullSet());
56  EXPECT_FALSE(One.isEmptySet());
57  EXPECT_FALSE(One.isWrappedSet());
58  EXPECT_FALSE(One.contains(APInt(16, 0x0)));
59  EXPECT_FALSE(One.contains(APInt(16, 0x9)));
60  EXPECT_TRUE(One.contains(APInt(16, 0xa)));
61  EXPECT_FALSE(One.contains(APInt(16, 0xaa9)));
62  EXPECT_FALSE(One.contains(APInt(16, 0xaaa)));
63  EXPECT_FALSE(One.inverse().contains(APInt(16, 0xa)));
64
65  EXPECT_FALSE(Some.isFullSet());
66  EXPECT_FALSE(Some.isEmptySet());
67  EXPECT_FALSE(Some.isWrappedSet());
68  EXPECT_FALSE(Some.contains(APInt(16, 0x0)));
69  EXPECT_FALSE(Some.contains(APInt(16, 0x9)));
70  EXPECT_TRUE(Some.contains(APInt(16, 0xa)));
71  EXPECT_TRUE(Some.contains(APInt(16, 0xaa9)));
72  EXPECT_FALSE(Some.contains(APInt(16, 0xaaa)));
73
74  EXPECT_FALSE(Wrap.isFullSet());
75  EXPECT_FALSE(Wrap.isEmptySet());
76  EXPECT_TRUE(Wrap.isWrappedSet());
77  EXPECT_TRUE(Wrap.contains(APInt(16, 0x0)));
78  EXPECT_TRUE(Wrap.contains(APInt(16, 0x9)));
79  EXPECT_FALSE(Wrap.contains(APInt(16, 0xa)));
80  EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9)));
81  EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa)));
82}
83
84TEST_F(ConstantRangeTest, Equality) {
85  EXPECT_EQ(Full, Full);
86  EXPECT_EQ(Empty, Empty);
87  EXPECT_EQ(One, One);
88  EXPECT_EQ(Some, Some);
89  EXPECT_EQ(Wrap, Wrap);
90  EXPECT_NE(Full, Empty);
91  EXPECT_NE(Full, One);
92  EXPECT_NE(Full, Some);
93  EXPECT_NE(Full, Wrap);
94  EXPECT_NE(Empty, One);
95  EXPECT_NE(Empty, Some);
96  EXPECT_NE(Empty, Wrap);
97  EXPECT_NE(One, Some);
98  EXPECT_NE(One, Wrap);
99  EXPECT_NE(Some, Wrap);
100}
101
102TEST_F(ConstantRangeTest, SingleElement) {
103  EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL));
104  EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL));
105  EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa));
106  EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL));
107  EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL));
108
109  EXPECT_FALSE(Full.isSingleElement());
110  EXPECT_FALSE(Empty.isSingleElement());
111  EXPECT_TRUE(One.isSingleElement());
112  EXPECT_FALSE(Some.isSingleElement());
113  EXPECT_FALSE(Wrap.isSingleElement());
114}
115
116TEST_F(ConstantRangeTest, GetSetSize) {
117  EXPECT_EQ(Full.getSetSize(), APInt(17, 65536));
118  EXPECT_EQ(Empty.getSetSize(), APInt(17, 0));
119  EXPECT_EQ(One.getSetSize(), APInt(17, 1));
120  EXPECT_EQ(Some.getSetSize(), APInt(17, 0xaa0));
121
122  ConstantRange Wrap(APInt(4, 7), APInt(4, 3));
123  ConstantRange Wrap2(APInt(4, 8), APInt(4, 7));
124  EXPECT_EQ(Wrap.getSetSize(), APInt(5, 12));
125  EXPECT_EQ(Wrap2.getSetSize(), APInt(5, 15));
126}
127
128TEST_F(ConstantRangeTest, GetMinsAndMaxes) {
129  EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX));
130  EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa));
131  EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9));
132  EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX));
133
134  EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0));
135  EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa));
136  EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa));
137  EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0));
138
139  EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX));
140  EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa));
141  EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9));
142  EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX));
143
144  EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
145  EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa));
146  EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa));
147  EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
148
149  // Found by Klee
150  EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(),
151            APInt(4, 7));
152}
153
154TEST_F(ConstantRangeTest, SignWrapped) {
155  EXPECT_TRUE(Full.isSignWrappedSet());
156  EXPECT_FALSE(Empty.isSignWrappedSet());
157  EXPECT_FALSE(One.isSignWrappedSet());
158  EXPECT_FALSE(Some.isSignWrappedSet());
159  EXPECT_TRUE(Wrap.isSignWrappedSet());
160
161  EXPECT_FALSE(ConstantRange(APInt(8, 127), APInt(8, 128)).isSignWrappedSet());
162  EXPECT_TRUE(ConstantRange(APInt(8, 127), APInt(8, 129)).isSignWrappedSet());
163  EXPECT_FALSE(ConstantRange(APInt(8, 128), APInt(8, 129)).isSignWrappedSet());
164  EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 9)).isSignWrappedSet());
165  EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 250)).isSignWrappedSet());
166  EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 10)).isSignWrappedSet());
167  EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 251)).isSignWrappedSet());
168}
169
170TEST_F(ConstantRangeTest, Trunc) {
171  ConstantRange TFull = Full.truncate(10);
172  ConstantRange TEmpty = Empty.truncate(10);
173  ConstantRange TOne = One.truncate(10);
174  ConstantRange TSome = Some.truncate(10);
175  ConstantRange TWrap = Wrap.truncate(10);
176  EXPECT_TRUE(TFull.isFullSet());
177  EXPECT_TRUE(TEmpty.isEmptySet());
178  EXPECT_EQ(TOne, ConstantRange(One.getLower().trunc(10),
179                                One.getUpper().trunc(10)));
180  EXPECT_TRUE(TSome.isFullSet());
181}
182
183TEST_F(ConstantRangeTest, ZExt) {
184  ConstantRange ZFull = Full.zeroExtend(20);
185  ConstantRange ZEmpty = Empty.zeroExtend(20);
186  ConstantRange ZOne = One.zeroExtend(20);
187  ConstantRange ZSome = Some.zeroExtend(20);
188  ConstantRange ZWrap = Wrap.zeroExtend(20);
189  EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
190  EXPECT_TRUE(ZEmpty.isEmptySet());
191  EXPECT_EQ(ZOne, ConstantRange(One.getLower().zext(20),
192                                One.getUpper().zext(20)));
193  EXPECT_EQ(ZSome, ConstantRange(Some.getLower().zext(20),
194                                 Some.getUpper().zext(20)));
195  EXPECT_EQ(ZWrap, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
196
197  // zext([5, 0), 3->7) = [5, 8)
198  ConstantRange FiveZero(APInt(3, 5), APInt(3, 0));
199  EXPECT_EQ(FiveZero.zeroExtend(7), ConstantRange(APInt(7, 5), APInt(7, 8)));
200}
201
202TEST_F(ConstantRangeTest, SExt) {
203  ConstantRange SFull = Full.signExtend(20);
204  ConstantRange SEmpty = Empty.signExtend(20);
205  ConstantRange SOne = One.signExtend(20);
206  ConstantRange SSome = Some.signExtend(20);
207  ConstantRange SWrap = Wrap.signExtend(20);
208  EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
209                                 APInt(20, INT16_MAX + 1, true)));
210  EXPECT_TRUE(SEmpty.isEmptySet());
211  EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20),
212                                One.getUpper().sext(20)));
213  EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20),
214                                 Some.getUpper().sext(20)));
215  EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
216                                 APInt(20, INT16_MAX + 1, true)));
217
218  EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16),
219            ConstantRange(APInt(16, -128), APInt(16, 128)));
220}
221
222TEST_F(ConstantRangeTest, IntersectWith) {
223  EXPECT_EQ(Empty.intersectWith(Full), Empty);
224  EXPECT_EQ(Empty.intersectWith(Empty), Empty);
225  EXPECT_EQ(Empty.intersectWith(One), Empty);
226  EXPECT_EQ(Empty.intersectWith(Some), Empty);
227  EXPECT_EQ(Empty.intersectWith(Wrap), Empty);
228  EXPECT_EQ(Full.intersectWith(Full), Full);
229  EXPECT_EQ(Some.intersectWith(Some), Some);
230  EXPECT_EQ(Some.intersectWith(One), One);
231  EXPECT_EQ(Full.intersectWith(One), One);
232  EXPECT_EQ(Full.intersectWith(Some), Some);
233  EXPECT_EQ(Some.intersectWith(Wrap), Empty);
234  EXPECT_EQ(One.intersectWith(Wrap), Empty);
235  EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One));
236
237  // Klee generated testcase from PR4545.
238  // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like
239  // 01..4.6789ABCDEF where the dots represent values not in the intersection.
240  ConstantRange LHS(APInt(16, 4), APInt(16, 2));
241  ConstantRange RHS(APInt(16, 6), APInt(16, 5));
242  EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
243
244  // previous bug: intersection of [min, 3) and [2, max) should be 2
245  LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3));
246  RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646));
247  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2)));
248
249  // [2, 0) /\ [4, 3) = [2, 0)
250  LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
251  RHS = ConstantRange(APInt(32, 4), APInt(32, 3));
252  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0)));
253
254  // [2, 0) /\ [4, 2) = [4, 0)
255  LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
256  RHS = ConstantRange(APInt(32, 4), APInt(32, 2));
257  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0)));
258
259  // [4, 2) /\ [5, 1) = [5, 1)
260  LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
261  RHS = ConstantRange(APInt(32, 5), APInt(32, 1));
262  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1)));
263
264  // [2, 0) /\ [7, 4) = [7, 4)
265  LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
266  RHS = ConstantRange(APInt(32, 7), APInt(32, 4));
267  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4)));
268
269  // [4, 2) /\ [1, 0) = [1, 0)
270  LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
271  RHS = ConstantRange(APInt(32, 1), APInt(32, 0));
272  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2)));
273
274  // [15, 0) /\ [7, 6) = [15, 0)
275  LHS = ConstantRange(APInt(32, 15), APInt(32, 0));
276  RHS = ConstantRange(APInt(32, 7), APInt(32, 6));
277  EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0)));
278}
279
280TEST_F(ConstantRangeTest, UnionWith) {
281  EXPECT_EQ(Wrap.unionWith(One),
282            ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
283  EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One));
284  EXPECT_EQ(Empty.unionWith(Empty), Empty);
285  EXPECT_EQ(Full.unionWith(Full), Full);
286  EXPECT_EQ(Some.unionWith(Wrap), Full);
287
288  // PR4545
289  EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith(
290                                    ConstantRange(APInt(16, 0), APInt(16, 8))),
291            ConstantRange(APInt(16, 14), APInt(16, 8)));
292  EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith(
293                                    ConstantRange(APInt(16, 4), APInt(16, 0))),
294              ConstantRange(16));
295  EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith(
296                                    ConstantRange(APInt(16, 2), APInt(16, 1))),
297              ConstantRange(16));
298}
299
300TEST_F(ConstantRangeTest, SetDifference) {
301  EXPECT_EQ(Full.difference(Empty), Full);
302  EXPECT_EQ(Full.difference(Full), Empty);
303  EXPECT_EQ(Empty.difference(Empty), Empty);
304  EXPECT_EQ(Empty.difference(Full), Empty);
305
306  ConstantRange A(APInt(16, 3), APInt(16, 7));
307  ConstantRange B(APInt(16, 5), APInt(16, 9));
308  ConstantRange C(APInt(16, 3), APInt(16, 5));
309  ConstantRange D(APInt(16, 7), APInt(16, 9));
310  ConstantRange E(APInt(16, 5), APInt(16, 4));
311  ConstantRange F(APInt(16, 7), APInt(16, 3));
312  EXPECT_EQ(A.difference(B), C);
313  EXPECT_EQ(B.difference(A), D);
314  EXPECT_EQ(E.difference(A), F);
315}
316
317TEST_F(ConstantRangeTest, SubtractAPInt) {
318  EXPECT_EQ(Full.subtract(APInt(16, 4)), Full);
319  EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty);
320  EXPECT_EQ(Some.subtract(APInt(16, 4)),
321            ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
322  EXPECT_EQ(Wrap.subtract(APInt(16, 4)),
323            ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
324  EXPECT_EQ(One.subtract(APInt(16, 4)),
325            ConstantRange(APInt(16, 0x6)));
326}
327
328TEST_F(ConstantRangeTest, Add) {
329  EXPECT_EQ(Full.add(APInt(16, 4)), Full);
330  EXPECT_EQ(Full.add(Full), Full);
331  EXPECT_EQ(Full.add(Empty), Empty);
332  EXPECT_EQ(Full.add(One), Full);
333  EXPECT_EQ(Full.add(Some), Full);
334  EXPECT_EQ(Full.add(Wrap), Full);
335  EXPECT_EQ(Empty.add(Empty), Empty);
336  EXPECT_EQ(Empty.add(One), Empty);
337  EXPECT_EQ(Empty.add(Some), Empty);
338  EXPECT_EQ(Empty.add(Wrap), Empty);
339  EXPECT_EQ(Empty.add(APInt(16, 4)), Empty);
340  EXPECT_EQ(Some.add(APInt(16, 4)),
341            ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
342  EXPECT_EQ(Wrap.add(APInt(16, 4)),
343            ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
344  EXPECT_EQ(One.add(APInt(16, 4)),
345            ConstantRange(APInt(16, 0xe)));
346}
347
348TEST_F(ConstantRangeTest, Sub) {
349  EXPECT_EQ(Full.sub(APInt(16, 4)), Full);
350  EXPECT_EQ(Full.sub(Full), Full);
351  EXPECT_EQ(Full.sub(Empty), Empty);
352  EXPECT_EQ(Full.sub(One), Full);
353  EXPECT_EQ(Full.sub(Some), Full);
354  EXPECT_EQ(Full.sub(Wrap), Full);
355  EXPECT_EQ(Empty.sub(Empty), Empty);
356  EXPECT_EQ(Empty.sub(One), Empty);
357  EXPECT_EQ(Empty.sub(Some), Empty);
358  EXPECT_EQ(Empty.sub(Wrap), Empty);
359  EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty);
360  EXPECT_EQ(Some.sub(APInt(16, 4)),
361            ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
362  EXPECT_EQ(Some.sub(Some),
363            ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0)));
364  EXPECT_EQ(Wrap.sub(APInt(16, 4)),
365            ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
366  EXPECT_EQ(One.sub(APInt(16, 4)),
367            ConstantRange(APInt(16, 0x6)));
368}
369
370TEST_F(ConstantRangeTest, Multiply) {
371  EXPECT_EQ(Full.multiply(Full), Full);
372  EXPECT_EQ(Full.multiply(Empty), Empty);
373  EXPECT_EQ(Full.multiply(One), Full);
374  EXPECT_EQ(Full.multiply(Some), Full);
375  EXPECT_EQ(Full.multiply(Wrap), Full);
376  EXPECT_EQ(Empty.multiply(Empty), Empty);
377  EXPECT_EQ(Empty.multiply(One), Empty);
378  EXPECT_EQ(Empty.multiply(Some), Empty);
379  EXPECT_EQ(Empty.multiply(Wrap), Empty);
380  EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa),
381                                             APInt(16, 0xa*0xa + 1)));
382  EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa),
383                                              APInt(16, 0xa*0xaa9 + 1)));
384  EXPECT_EQ(One.multiply(Wrap), Full);
385  EXPECT_EQ(Some.multiply(Some), Full);
386  EXPECT_EQ(Some.multiply(Wrap), Full);
387  EXPECT_EQ(Wrap.multiply(Wrap), Full);
388
389  ConstantRange Zero(APInt(16, 0));
390  EXPECT_EQ(Zero.multiply(Full), Zero);
391  EXPECT_EQ(Zero.multiply(Some), Zero);
392  EXPECT_EQ(Zero.multiply(Wrap), Zero);
393  EXPECT_EQ(Full.multiply(Zero), Zero);
394  EXPECT_EQ(Some.multiply(Zero), Zero);
395  EXPECT_EQ(Wrap.multiply(Zero), Zero);
396
397  // http://llvm.org/PR4545
398  EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply(
399                ConstantRange(APInt(4, 6), APInt(4, 2))),
400            ConstantRange(4, /*isFullSet=*/true));
401}
402
403TEST_F(ConstantRangeTest, UMax) {
404  EXPECT_EQ(Full.umax(Full), Full);
405  EXPECT_EQ(Full.umax(Empty), Empty);
406  EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
407  EXPECT_EQ(Full.umax(Wrap), Full);
408  EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
409  EXPECT_EQ(Empty.umax(Empty), Empty);
410  EXPECT_EQ(Empty.umax(Some), Empty);
411  EXPECT_EQ(Empty.umax(Wrap), Empty);
412  EXPECT_EQ(Empty.umax(One), Empty);
413  EXPECT_EQ(Some.umax(Some), Some);
414  EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
415  EXPECT_EQ(Some.umax(One), Some);
416  // TODO: ConstantRange is currently over-conservative here.
417  EXPECT_EQ(Wrap.umax(Wrap), Full);
418  EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
419  EXPECT_EQ(One.umax(One), One);
420}
421
422TEST_F(ConstantRangeTest, SMax) {
423  EXPECT_EQ(Full.smax(Full), Full);
424  EXPECT_EQ(Full.smax(Empty), Empty);
425  EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
426                                           APInt::getSignedMinValue(16)));
427  EXPECT_EQ(Full.smax(Wrap), Full);
428  EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa),
429                                          APInt::getSignedMinValue(16)));
430  EXPECT_EQ(Empty.smax(Empty), Empty);
431  EXPECT_EQ(Empty.smax(Some), Empty);
432  EXPECT_EQ(Empty.smax(Wrap), Empty);
433  EXPECT_EQ(Empty.smax(One), Empty);
434  EXPECT_EQ(Some.smax(Some), Some);
435  EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa),
436                                           APInt(16, (uint64_t)INT16_MIN)));
437  EXPECT_EQ(Some.smax(One), Some);
438  EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa),
439                                          APInt(16, (uint64_t)INT16_MIN)));
440  EXPECT_EQ(One.smax(One), One);
441}
442
443TEST_F(ConstantRangeTest, UDiv) {
444  EXPECT_EQ(Full.udiv(Full), Full);
445  EXPECT_EQ(Full.udiv(Empty), Empty);
446  EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0),
447                                          APInt(16, 0xffff / 0xa + 1)));
448  EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0),
449                                           APInt(16, 0xffff / 0xa + 1)));
450  EXPECT_EQ(Full.udiv(Wrap), Full);
451  EXPECT_EQ(Empty.udiv(Empty), Empty);
452  EXPECT_EQ(Empty.udiv(One), Empty);
453  EXPECT_EQ(Empty.udiv(Some), Empty);
454  EXPECT_EQ(Empty.udiv(Wrap), Empty);
455  EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1)));
456  EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2)));
457  EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
458  EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111)));
459  EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
460  EXPECT_EQ(Wrap.udiv(Wrap), Full);
461}
462
463TEST_F(ConstantRangeTest, Shl) {
464  EXPECT_EQ(Full.shl(Full), Full);
465  EXPECT_EQ(Full.shl(Empty), Empty);
466  EXPECT_EQ(Full.shl(One), Full);    // TODO: [0, (-1 << 0xa) + 1)
467  EXPECT_EQ(Full.shl(Some), Full);   // TODO: [0, (-1 << 0xa) + 1)
468  EXPECT_EQ(Full.shl(Wrap), Full);
469  EXPECT_EQ(Empty.shl(Empty), Empty);
470  EXPECT_EQ(Empty.shl(One), Empty);
471  EXPECT_EQ(Empty.shl(Some), Empty);
472  EXPECT_EQ(Empty.shl(Wrap), Empty);
473  EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa),
474                                        APInt(16, (0xa << 0xa) + 1)));
475  EXPECT_EQ(One.shl(Some), Full);    // TODO: [0xa << 0xa, 0)
476  EXPECT_EQ(One.shl(Wrap), Full);    // TODO: [0xa, 0xa << 14 + 1)
477  EXPECT_EQ(Some.shl(Some), Full);   // TODO: [0xa << 0xa, 0xfc01)
478  EXPECT_EQ(Some.shl(Wrap), Full);   // TODO: [0xa, 0x7ff << 0x5 + 1)
479  EXPECT_EQ(Wrap.shl(Wrap), Full);
480}
481
482TEST_F(ConstantRangeTest, Lshr) {
483  EXPECT_EQ(Full.lshr(Full), Full);
484  EXPECT_EQ(Full.lshr(Empty), Empty);
485  EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0),
486                                          APInt(16, (0xffff >> 0xa) + 1)));
487  EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0),
488                                           APInt(16, (0xffff >> 0xa) + 1)));
489  EXPECT_EQ(Full.lshr(Wrap), Full);
490  EXPECT_EQ(Empty.lshr(Empty), Empty);
491  EXPECT_EQ(Empty.lshr(One), Empty);
492  EXPECT_EQ(Empty.lshr(Some), Empty);
493  EXPECT_EQ(Empty.lshr(Wrap), Empty);
494  EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0)));
495  EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0)));
496  EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
497  EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0),
498                                           APInt(16, (0xaaa >> 0xa) + 1)));
499  EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
500  EXPECT_EQ(Wrap.lshr(Wrap), Full);
501}
502
503TEST(ConstantRange, MakeICmpRegion) {
504  // PR8250
505  ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32));
506  EXPECT_TRUE(ConstantRange::makeICmpRegion(ICmpInst::ICMP_SGT,
507                                            SMax).isEmptySet());
508}
509
510}  // anonymous namespace
511