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comparison unittests/IR/ConstantRangeTest.cpp @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
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children afa8332a0e37
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34:e874dbf0ad9d 77:54457678186b
1 //===- 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/IR/ConstantRange.h"
11 #include "llvm/IR/Instructions.h"
12 #include "gtest/gtest.h"
13
14 using namespace llvm;
15
16 namespace {
17
18 class ConstantRangeTest : public ::testing::Test {
19 protected:
20 static ConstantRange Full;
21 static ConstantRange Empty;
22 static ConstantRange One;
23 static ConstantRange Some;
24 static ConstantRange Wrap;
25 };
26
27 ConstantRange ConstantRangeTest::Full(16);
28 ConstantRange ConstantRangeTest::Empty(16, false);
29 ConstantRange ConstantRangeTest::One(APInt(16, 0xa));
30 ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa));
31 ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa));
32
33 TEST_F(ConstantRangeTest, Basics) {
34 EXPECT_TRUE(Full.isFullSet());
35 EXPECT_FALSE(Full.isEmptySet());
36 EXPECT_TRUE(Full.inverse().isEmptySet());
37 EXPECT_FALSE(Full.isWrappedSet());
38 EXPECT_TRUE(Full.contains(APInt(16, 0x0)));
39 EXPECT_TRUE(Full.contains(APInt(16, 0x9)));
40 EXPECT_TRUE(Full.contains(APInt(16, 0xa)));
41 EXPECT_TRUE(Full.contains(APInt(16, 0xaa9)));
42 EXPECT_TRUE(Full.contains(APInt(16, 0xaaa)));
43
44 EXPECT_FALSE(Empty.isFullSet());
45 EXPECT_TRUE(Empty.isEmptySet());
46 EXPECT_TRUE(Empty.inverse().isFullSet());
47 EXPECT_FALSE(Empty.isWrappedSet());
48 EXPECT_FALSE(Empty.contains(APInt(16, 0x0)));
49 EXPECT_FALSE(Empty.contains(APInt(16, 0x9)));
50 EXPECT_FALSE(Empty.contains(APInt(16, 0xa)));
51 EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9)));
52 EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa)));
53
54 EXPECT_FALSE(One.isFullSet());
55 EXPECT_FALSE(One.isEmptySet());
56 EXPECT_FALSE(One.isWrappedSet());
57 EXPECT_FALSE(One.contains(APInt(16, 0x0)));
58 EXPECT_FALSE(One.contains(APInt(16, 0x9)));
59 EXPECT_TRUE(One.contains(APInt(16, 0xa)));
60 EXPECT_FALSE(One.contains(APInt(16, 0xaa9)));
61 EXPECT_FALSE(One.contains(APInt(16, 0xaaa)));
62 EXPECT_FALSE(One.inverse().contains(APInt(16, 0xa)));
63
64 EXPECT_FALSE(Some.isFullSet());
65 EXPECT_FALSE(Some.isEmptySet());
66 EXPECT_FALSE(Some.isWrappedSet());
67 EXPECT_FALSE(Some.contains(APInt(16, 0x0)));
68 EXPECT_FALSE(Some.contains(APInt(16, 0x9)));
69 EXPECT_TRUE(Some.contains(APInt(16, 0xa)));
70 EXPECT_TRUE(Some.contains(APInt(16, 0xaa9)));
71 EXPECT_FALSE(Some.contains(APInt(16, 0xaaa)));
72
73 EXPECT_FALSE(Wrap.isFullSet());
74 EXPECT_FALSE(Wrap.isEmptySet());
75 EXPECT_TRUE(Wrap.isWrappedSet());
76 EXPECT_TRUE(Wrap.contains(APInt(16, 0x0)));
77 EXPECT_TRUE(Wrap.contains(APInt(16, 0x9)));
78 EXPECT_FALSE(Wrap.contains(APInt(16, 0xa)));
79 EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9)));
80 EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa)));
81 }
82
83 TEST_F(ConstantRangeTest, Equality) {
84 EXPECT_EQ(Full, Full);
85 EXPECT_EQ(Empty, Empty);
86 EXPECT_EQ(One, One);
87 EXPECT_EQ(Some, Some);
88 EXPECT_EQ(Wrap, Wrap);
89 EXPECT_NE(Full, Empty);
90 EXPECT_NE(Full, One);
91 EXPECT_NE(Full, Some);
92 EXPECT_NE(Full, Wrap);
93 EXPECT_NE(Empty, One);
94 EXPECT_NE(Empty, Some);
95 EXPECT_NE(Empty, Wrap);
96 EXPECT_NE(One, Some);
97 EXPECT_NE(One, Wrap);
98 EXPECT_NE(Some, Wrap);
99 }
100
101 TEST_F(ConstantRangeTest, SingleElement) {
102 EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(nullptr));
103 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(nullptr));
104 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa));
105 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(nullptr));
106 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(nullptr));
107
108 EXPECT_FALSE(Full.isSingleElement());
109 EXPECT_FALSE(Empty.isSingleElement());
110 EXPECT_TRUE(One.isSingleElement());
111 EXPECT_FALSE(Some.isSingleElement());
112 EXPECT_FALSE(Wrap.isSingleElement());
113 }
114
115 TEST_F(ConstantRangeTest, GetSetSize) {
116 EXPECT_EQ(Full.getSetSize(), APInt(17, 65536));
117 EXPECT_EQ(Empty.getSetSize(), APInt(17, 0));
118 EXPECT_EQ(One.getSetSize(), APInt(17, 1));
119 EXPECT_EQ(Some.getSetSize(), APInt(17, 0xaa0));
120
121 ConstantRange Wrap(APInt(4, 7), APInt(4, 3));
122 ConstantRange Wrap2(APInt(4, 8), APInt(4, 7));
123 EXPECT_EQ(Wrap.getSetSize(), APInt(5, 12));
124 EXPECT_EQ(Wrap2.getSetSize(), APInt(5, 15));
125 }
126
127 TEST_F(ConstantRangeTest, GetMinsAndMaxes) {
128 EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX));
129 EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa));
130 EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9));
131 EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX));
132
133 EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0));
134 EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa));
135 EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa));
136 EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0));
137
138 EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX));
139 EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa));
140 EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9));
141 EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX));
142
143 EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
144 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa));
145 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa));
146 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
147
148 // Found by Klee
149 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(),
150 APInt(4, 7));
151 }
152
153 TEST_F(ConstantRangeTest, SignWrapped) {
154 EXPECT_TRUE(Full.isSignWrappedSet());
155 EXPECT_FALSE(Empty.isSignWrappedSet());
156 EXPECT_FALSE(One.isSignWrappedSet());
157 EXPECT_FALSE(Some.isSignWrappedSet());
158 EXPECT_TRUE(Wrap.isSignWrappedSet());
159
160 EXPECT_FALSE(ConstantRange(APInt(8, 127), APInt(8, 128)).isSignWrappedSet());
161 EXPECT_TRUE(ConstantRange(APInt(8, 127), APInt(8, 129)).isSignWrappedSet());
162 EXPECT_FALSE(ConstantRange(APInt(8, 128), APInt(8, 129)).isSignWrappedSet());
163 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 9)).isSignWrappedSet());
164 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 250)).isSignWrappedSet());
165 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 10)).isSignWrappedSet());
166 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 251)).isSignWrappedSet());
167 }
168
169 TEST_F(ConstantRangeTest, Trunc) {
170 ConstantRange TFull = Full.truncate(10);
171 ConstantRange TEmpty = Empty.truncate(10);
172 ConstantRange TOne = One.truncate(10);
173 ConstantRange TSome = Some.truncate(10);
174 ConstantRange TWrap = Wrap.truncate(10);
175 EXPECT_TRUE(TFull.isFullSet());
176 EXPECT_TRUE(TEmpty.isEmptySet());
177 EXPECT_EQ(TOne, ConstantRange(One.getLower().trunc(10),
178 One.getUpper().trunc(10)));
179 EXPECT_TRUE(TSome.isFullSet());
180 }
181
182 TEST_F(ConstantRangeTest, ZExt) {
183 ConstantRange ZFull = Full.zeroExtend(20);
184 ConstantRange ZEmpty = Empty.zeroExtend(20);
185 ConstantRange ZOne = One.zeroExtend(20);
186 ConstantRange ZSome = Some.zeroExtend(20);
187 ConstantRange ZWrap = Wrap.zeroExtend(20);
188 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
189 EXPECT_TRUE(ZEmpty.isEmptySet());
190 EXPECT_EQ(ZOne, ConstantRange(One.getLower().zext(20),
191 One.getUpper().zext(20)));
192 EXPECT_EQ(ZSome, ConstantRange(Some.getLower().zext(20),
193 Some.getUpper().zext(20)));
194 EXPECT_EQ(ZWrap, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
195
196 // zext([5, 0), 3->7) = [5, 8)
197 ConstantRange FiveZero(APInt(3, 5), APInt(3, 0));
198 EXPECT_EQ(FiveZero.zeroExtend(7), ConstantRange(APInt(7, 5), APInt(7, 8)));
199 }
200
201 TEST_F(ConstantRangeTest, SExt) {
202 ConstantRange SFull = Full.signExtend(20);
203 ConstantRange SEmpty = Empty.signExtend(20);
204 ConstantRange SOne = One.signExtend(20);
205 ConstantRange SSome = Some.signExtend(20);
206 ConstantRange SWrap = Wrap.signExtend(20);
207 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
208 APInt(20, INT16_MAX + 1, true)));
209 EXPECT_TRUE(SEmpty.isEmptySet());
210 EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20),
211 One.getUpper().sext(20)));
212 EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20),
213 Some.getUpper().sext(20)));
214 EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
215 APInt(20, INT16_MAX + 1, true)));
216
217 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16),
218 ConstantRange(APInt(16, -128), APInt(16, 128)));
219
220 EXPECT_EQ(ConstantRange(APInt(16, 0x0200), APInt(16, 0x8000)).signExtend(19),
221 ConstantRange(APInt(19, 0x0200), APInt(19, 0x8000)));
222 }
223
224 TEST_F(ConstantRangeTest, IntersectWith) {
225 EXPECT_EQ(Empty.intersectWith(Full), Empty);
226 EXPECT_EQ(Empty.intersectWith(Empty), Empty);
227 EXPECT_EQ(Empty.intersectWith(One), Empty);
228 EXPECT_EQ(Empty.intersectWith(Some), Empty);
229 EXPECT_EQ(Empty.intersectWith(Wrap), Empty);
230 EXPECT_EQ(Full.intersectWith(Full), Full);
231 EXPECT_EQ(Some.intersectWith(Some), Some);
232 EXPECT_EQ(Some.intersectWith(One), One);
233 EXPECT_EQ(Full.intersectWith(One), One);
234 EXPECT_EQ(Full.intersectWith(Some), Some);
235 EXPECT_EQ(Some.intersectWith(Wrap), Empty);
236 EXPECT_EQ(One.intersectWith(Wrap), Empty);
237 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One));
238
239 // Klee generated testcase from PR4545.
240 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like
241 // 01..4.6789ABCDEF where the dots represent values not in the intersection.
242 ConstantRange LHS(APInt(16, 4), APInt(16, 2));
243 ConstantRange RHS(APInt(16, 6), APInt(16, 5));
244 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
245
246 // previous bug: intersection of [min, 3) and [2, max) should be 2
247 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3));
248 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646));
249 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2)));
250
251 // [2, 0) /\ [4, 3) = [2, 0)
252 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
253 RHS = ConstantRange(APInt(32, 4), APInt(32, 3));
254 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0)));
255
256 // [2, 0) /\ [4, 2) = [4, 0)
257 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
258 RHS = ConstantRange(APInt(32, 4), APInt(32, 2));
259 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0)));
260
261 // [4, 2) /\ [5, 1) = [5, 1)
262 LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
263 RHS = ConstantRange(APInt(32, 5), APInt(32, 1));
264 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1)));
265
266 // [2, 0) /\ [7, 4) = [7, 4)
267 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
268 RHS = ConstantRange(APInt(32, 7), APInt(32, 4));
269 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4)));
270
271 // [4, 2) /\ [1, 0) = [1, 0)
272 LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
273 RHS = ConstantRange(APInt(32, 1), APInt(32, 0));
274 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2)));
275
276 // [15, 0) /\ [7, 6) = [15, 0)
277 LHS = ConstantRange(APInt(32, 15), APInt(32, 0));
278 RHS = ConstantRange(APInt(32, 7), APInt(32, 6));
279 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0)));
280 }
281
282 TEST_F(ConstantRangeTest, UnionWith) {
283 EXPECT_EQ(Wrap.unionWith(One),
284 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
285 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One));
286 EXPECT_EQ(Empty.unionWith(Empty), Empty);
287 EXPECT_EQ(Full.unionWith(Full), Full);
288 EXPECT_EQ(Some.unionWith(Wrap), Full);
289
290 // PR4545
291 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith(
292 ConstantRange(APInt(16, 0), APInt(16, 8))),
293 ConstantRange(APInt(16, 14), APInt(16, 8)));
294 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith(
295 ConstantRange(APInt(16, 4), APInt(16, 0))),
296 ConstantRange(16));
297 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith(
298 ConstantRange(APInt(16, 2), APInt(16, 1))),
299 ConstantRange(16));
300 }
301
302 TEST_F(ConstantRangeTest, SetDifference) {
303 EXPECT_EQ(Full.difference(Empty), Full);
304 EXPECT_EQ(Full.difference(Full), Empty);
305 EXPECT_EQ(Empty.difference(Empty), Empty);
306 EXPECT_EQ(Empty.difference(Full), Empty);
307
308 ConstantRange A(APInt(16, 3), APInt(16, 7));
309 ConstantRange B(APInt(16, 5), APInt(16, 9));
310 ConstantRange C(APInt(16, 3), APInt(16, 5));
311 ConstantRange D(APInt(16, 7), APInt(16, 9));
312 ConstantRange E(APInt(16, 5), APInt(16, 4));
313 ConstantRange F(APInt(16, 7), APInt(16, 3));
314 EXPECT_EQ(A.difference(B), C);
315 EXPECT_EQ(B.difference(A), D);
316 EXPECT_EQ(E.difference(A), F);
317 }
318
319 TEST_F(ConstantRangeTest, SubtractAPInt) {
320 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full);
321 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty);
322 EXPECT_EQ(Some.subtract(APInt(16, 4)),
323 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
324 EXPECT_EQ(Wrap.subtract(APInt(16, 4)),
325 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
326 EXPECT_EQ(One.subtract(APInt(16, 4)),
327 ConstantRange(APInt(16, 0x6)));
328 }
329
330 TEST_F(ConstantRangeTest, Add) {
331 EXPECT_EQ(Full.add(APInt(16, 4)), Full);
332 EXPECT_EQ(Full.add(Full), Full);
333 EXPECT_EQ(Full.add(Empty), Empty);
334 EXPECT_EQ(Full.add(One), Full);
335 EXPECT_EQ(Full.add(Some), Full);
336 EXPECT_EQ(Full.add(Wrap), Full);
337 EXPECT_EQ(Empty.add(Empty), Empty);
338 EXPECT_EQ(Empty.add(One), Empty);
339 EXPECT_EQ(Empty.add(Some), Empty);
340 EXPECT_EQ(Empty.add(Wrap), Empty);
341 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty);
342 EXPECT_EQ(Some.add(APInt(16, 4)),
343 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
344 EXPECT_EQ(Wrap.add(APInt(16, 4)),
345 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
346 EXPECT_EQ(One.add(APInt(16, 4)),
347 ConstantRange(APInt(16, 0xe)));
348 }
349
350 TEST_F(ConstantRangeTest, Sub) {
351 EXPECT_EQ(Full.sub(APInt(16, 4)), Full);
352 EXPECT_EQ(Full.sub(Full), Full);
353 EXPECT_EQ(Full.sub(Empty), Empty);
354 EXPECT_EQ(Full.sub(One), Full);
355 EXPECT_EQ(Full.sub(Some), Full);
356 EXPECT_EQ(Full.sub(Wrap), Full);
357 EXPECT_EQ(Empty.sub(Empty), Empty);
358 EXPECT_EQ(Empty.sub(One), Empty);
359 EXPECT_EQ(Empty.sub(Some), Empty);
360 EXPECT_EQ(Empty.sub(Wrap), Empty);
361 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty);
362 EXPECT_EQ(Some.sub(APInt(16, 4)),
363 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
364 EXPECT_EQ(Some.sub(Some),
365 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0)));
366 EXPECT_EQ(Wrap.sub(APInt(16, 4)),
367 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
368 EXPECT_EQ(One.sub(APInt(16, 4)),
369 ConstantRange(APInt(16, 0x6)));
370 }
371
372 TEST_F(ConstantRangeTest, Multiply) {
373 EXPECT_EQ(Full.multiply(Full), Full);
374 EXPECT_EQ(Full.multiply(Empty), Empty);
375 EXPECT_EQ(Full.multiply(One), Full);
376 EXPECT_EQ(Full.multiply(Some), Full);
377 EXPECT_EQ(Full.multiply(Wrap), Full);
378 EXPECT_EQ(Empty.multiply(Empty), Empty);
379 EXPECT_EQ(Empty.multiply(One), Empty);
380 EXPECT_EQ(Empty.multiply(Some), Empty);
381 EXPECT_EQ(Empty.multiply(Wrap), Empty);
382 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa),
383 APInt(16, 0xa*0xa + 1)));
384 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa),
385 APInt(16, 0xa*0xaa9 + 1)));
386 EXPECT_EQ(One.multiply(Wrap), Full);
387 EXPECT_EQ(Some.multiply(Some), Full);
388 EXPECT_EQ(Some.multiply(Wrap), Full);
389 EXPECT_EQ(Wrap.multiply(Wrap), Full);
390
391 ConstantRange Zero(APInt(16, 0));
392 EXPECT_EQ(Zero.multiply(Full), Zero);
393 EXPECT_EQ(Zero.multiply(Some), Zero);
394 EXPECT_EQ(Zero.multiply(Wrap), Zero);
395 EXPECT_EQ(Full.multiply(Zero), Zero);
396 EXPECT_EQ(Some.multiply(Zero), Zero);
397 EXPECT_EQ(Wrap.multiply(Zero), Zero);
398
399 // http://llvm.org/PR4545
400 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply(
401 ConstantRange(APInt(4, 6), APInt(4, 2))),
402 ConstantRange(4, /*isFullSet=*/true));
403 }
404
405 TEST_F(ConstantRangeTest, UMax) {
406 EXPECT_EQ(Full.umax(Full), Full);
407 EXPECT_EQ(Full.umax(Empty), Empty);
408 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
409 EXPECT_EQ(Full.umax(Wrap), Full);
410 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
411 EXPECT_EQ(Empty.umax(Empty), Empty);
412 EXPECT_EQ(Empty.umax(Some), Empty);
413 EXPECT_EQ(Empty.umax(Wrap), Empty);
414 EXPECT_EQ(Empty.umax(One), Empty);
415 EXPECT_EQ(Some.umax(Some), Some);
416 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
417 EXPECT_EQ(Some.umax(One), Some);
418 // TODO: ConstantRange is currently over-conservative here.
419 EXPECT_EQ(Wrap.umax(Wrap), Full);
420 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
421 EXPECT_EQ(One.umax(One), One);
422 }
423
424 TEST_F(ConstantRangeTest, SMax) {
425 EXPECT_EQ(Full.smax(Full), Full);
426 EXPECT_EQ(Full.smax(Empty), Empty);
427 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
428 APInt::getSignedMinValue(16)));
429 EXPECT_EQ(Full.smax(Wrap), Full);
430 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa),
431 APInt::getSignedMinValue(16)));
432 EXPECT_EQ(Empty.smax(Empty), Empty);
433 EXPECT_EQ(Empty.smax(Some), Empty);
434 EXPECT_EQ(Empty.smax(Wrap), Empty);
435 EXPECT_EQ(Empty.smax(One), Empty);
436 EXPECT_EQ(Some.smax(Some), Some);
437 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa),
438 APInt(16, (uint64_t)INT16_MIN)));
439 EXPECT_EQ(Some.smax(One), Some);
440 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa),
441 APInt(16, (uint64_t)INT16_MIN)));
442 EXPECT_EQ(One.smax(One), One);
443 }
444
445 TEST_F(ConstantRangeTest, UDiv) {
446 EXPECT_EQ(Full.udiv(Full), Full);
447 EXPECT_EQ(Full.udiv(Empty), Empty);
448 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0),
449 APInt(16, 0xffff / 0xa + 1)));
450 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0),
451 APInt(16, 0xffff / 0xa + 1)));
452 EXPECT_EQ(Full.udiv(Wrap), Full);
453 EXPECT_EQ(Empty.udiv(Empty), Empty);
454 EXPECT_EQ(Empty.udiv(One), Empty);
455 EXPECT_EQ(Empty.udiv(Some), Empty);
456 EXPECT_EQ(Empty.udiv(Wrap), Empty);
457 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1)));
458 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2)));
459 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
460 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111)));
461 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
462 EXPECT_EQ(Wrap.udiv(Wrap), Full);
463 }
464
465 TEST_F(ConstantRangeTest, Shl) {
466 EXPECT_EQ(Full.shl(Full), Full);
467 EXPECT_EQ(Full.shl(Empty), Empty);
468 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1)
469 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1)
470 EXPECT_EQ(Full.shl(Wrap), Full);
471 EXPECT_EQ(Empty.shl(Empty), Empty);
472 EXPECT_EQ(Empty.shl(One), Empty);
473 EXPECT_EQ(Empty.shl(Some), Empty);
474 EXPECT_EQ(Empty.shl(Wrap), Empty);
475 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa),
476 APInt(16, (0xa << 0xa) + 1)));
477 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0)
478 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1)
479 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01)
480 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1)
481 EXPECT_EQ(Wrap.shl(Wrap), Full);
482 }
483
484 TEST_F(ConstantRangeTest, Lshr) {
485 EXPECT_EQ(Full.lshr(Full), Full);
486 EXPECT_EQ(Full.lshr(Empty), Empty);
487 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0),
488 APInt(16, (0xffff >> 0xa) + 1)));
489 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0),
490 APInt(16, (0xffff >> 0xa) + 1)));
491 EXPECT_EQ(Full.lshr(Wrap), Full);
492 EXPECT_EQ(Empty.lshr(Empty), Empty);
493 EXPECT_EQ(Empty.lshr(One), Empty);
494 EXPECT_EQ(Empty.lshr(Some), Empty);
495 EXPECT_EQ(Empty.lshr(Wrap), Empty);
496 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0)));
497 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0)));
498 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
499 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0),
500 APInt(16, (0xaaa >> 0xa) + 1)));
501 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
502 EXPECT_EQ(Wrap.lshr(Wrap), Full);
503 }
504
505 TEST(ConstantRange, MakeICmpRegion) {
506 // PR8250
507 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32));
508 EXPECT_TRUE(ConstantRange::makeICmpRegion(ICmpInst::ICMP_SGT,
509 SMax).isEmptySet());
510 }
511
512 } // anonymous namespace