1 //===- llvm/unittest/Support/ConstantRangeTest.cpp - ConstantRange tests --===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Support/ConstantRange.h"
11 #include "llvm/Instructions.h"
13 #include "gtest/gtest.h"
19 class ConstantRangeTest : public ::testing::Test {
21 static ConstantRange Full;
22 static ConstantRange Empty;
23 static ConstantRange One;
24 static ConstantRange Some;
25 static ConstantRange Wrap;
28 ConstantRange ConstantRangeTest::Full(16);
29 ConstantRange ConstantRangeTest::Empty(16, false);
30 ConstantRange ConstantRangeTest::One(APInt(16, 0xa));
31 ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa));
32 ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa));
34 TEST_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)));
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)));
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)));
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)));
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)));
84 TEST_F(ConstantRangeTest, Equality) {
85 EXPECT_EQ(Full, Full);
86 EXPECT_EQ(Empty, Empty);
88 EXPECT_EQ(Some, Some);
89 EXPECT_EQ(Wrap, Wrap);
90 EXPECT_NE(Full, Empty);
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);
99 EXPECT_NE(Some, Wrap);
102 TEST_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));
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());
116 TEST_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));
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));
128 TEST_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));
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));
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));
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));
150 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(),
154 TEST_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());
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());
170 TEST_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());
183 TEST_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)));
198 TEST_F(ConstantRangeTest, SExt) {
199 ConstantRange SFull = Full.signExtend(20);
200 ConstantRange SEmpty = Empty.signExtend(20);
201 ConstantRange SOne = One.signExtend(20);
202 ConstantRange SSome = Some.signExtend(20);
203 ConstantRange SWrap = Wrap.signExtend(20);
204 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
205 APInt(20, INT16_MAX + 1, true)));
206 EXPECT_TRUE(SEmpty.isEmptySet());
207 EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20),
208 One.getUpper().sext(20)));
209 EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20),
210 Some.getUpper().sext(20)));
211 EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
212 APInt(20, INT16_MAX + 1, true)));
214 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16),
215 ConstantRange(APInt(16, -128), APInt(16, 128)));
218 TEST_F(ConstantRangeTest, IntersectWith) {
219 EXPECT_EQ(Empty.intersectWith(Full), Empty);
220 EXPECT_EQ(Empty.intersectWith(Empty), Empty);
221 EXPECT_EQ(Empty.intersectWith(One), Empty);
222 EXPECT_EQ(Empty.intersectWith(Some), Empty);
223 EXPECT_EQ(Empty.intersectWith(Wrap), Empty);
224 EXPECT_EQ(Full.intersectWith(Full), Full);
225 EXPECT_EQ(Some.intersectWith(Some), Some);
226 EXPECT_EQ(Some.intersectWith(One), One);
227 EXPECT_EQ(Full.intersectWith(One), One);
228 EXPECT_EQ(Full.intersectWith(Some), Some);
229 EXPECT_EQ(Some.intersectWith(Wrap), Empty);
230 EXPECT_EQ(One.intersectWith(Wrap), Empty);
231 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One));
233 // Klee generated testcase from PR4545.
234 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like
235 // 01..4.6789ABCDEF where the dots represent values not in the intersection.
236 ConstantRange LHS(APInt(16, 4), APInt(16, 2));
237 ConstantRange RHS(APInt(16, 6), APInt(16, 5));
238 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
240 // previous bug: intersection of [min, 3) and [2, max) should be 2
241 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3));
242 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646));
243 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2)));
245 // [2, 0) /\ [4, 3) = [2, 0)
246 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
247 RHS = ConstantRange(APInt(32, 4), APInt(32, 3));
248 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0)));
250 // [2, 0) /\ [4, 2) = [4, 0)
251 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
252 RHS = ConstantRange(APInt(32, 4), APInt(32, 2));
253 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0)));
255 // [4, 2) /\ [5, 1) = [5, 1)
256 LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
257 RHS = ConstantRange(APInt(32, 5), APInt(32, 1));
258 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1)));
260 // [2, 0) /\ [7, 4) = [7, 4)
261 LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
262 RHS = ConstantRange(APInt(32, 7), APInt(32, 4));
263 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4)));
265 // [4, 2) /\ [1, 0) = [1, 0)
266 LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
267 RHS = ConstantRange(APInt(32, 1), APInt(32, 0));
268 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2)));
270 // [15, 0) /\ [7, 6) = [15, 0)
271 LHS = ConstantRange(APInt(32, 15), APInt(32, 0));
272 RHS = ConstantRange(APInt(32, 7), APInt(32, 6));
273 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0)));
276 TEST_F(ConstantRangeTest, UnionWith) {
277 EXPECT_EQ(Wrap.unionWith(One),
278 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
279 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One));
280 EXPECT_EQ(Empty.unionWith(Empty), Empty);
281 EXPECT_EQ(Full.unionWith(Full), Full);
282 EXPECT_EQ(Some.unionWith(Wrap), Full);
285 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith(
286 ConstantRange(APInt(16, 0), APInt(16, 8))),
287 ConstantRange(APInt(16, 14), APInt(16, 8)));
288 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith(
289 ConstantRange(APInt(16, 4), APInt(16, 0))),
291 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith(
292 ConstantRange(APInt(16, 2), APInt(16, 1))),
296 TEST_F(ConstantRangeTest, SetDifference) {
297 EXPECT_EQ(Full.difference(Empty), Full);
298 EXPECT_EQ(Full.difference(Full), Empty);
299 EXPECT_EQ(Empty.difference(Empty), Empty);
300 EXPECT_EQ(Empty.difference(Full), Empty);
302 ConstantRange A(APInt(16, 3), APInt(16, 7));
303 ConstantRange B(APInt(16, 5), APInt(16, 9));
304 ConstantRange C(APInt(16, 3), APInt(16, 5));
305 ConstantRange D(APInt(16, 7), APInt(16, 9));
306 ConstantRange E(APInt(16, 5), APInt(16, 4));
307 ConstantRange F(APInt(16, 7), APInt(16, 3));
308 EXPECT_EQ(A.difference(B), C);
309 EXPECT_EQ(B.difference(A), D);
310 EXPECT_EQ(E.difference(A), F);
313 TEST_F(ConstantRangeTest, SubtractAPInt) {
314 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full);
315 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty);
316 EXPECT_EQ(Some.subtract(APInt(16, 4)),
317 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
318 EXPECT_EQ(Wrap.subtract(APInt(16, 4)),
319 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
320 EXPECT_EQ(One.subtract(APInt(16, 4)),
321 ConstantRange(APInt(16, 0x6)));
324 TEST_F(ConstantRangeTest, Add) {
325 EXPECT_EQ(Full.add(APInt(16, 4)), Full);
326 EXPECT_EQ(Full.add(Full), Full);
327 EXPECT_EQ(Full.add(Empty), Empty);
328 EXPECT_EQ(Full.add(One), Full);
329 EXPECT_EQ(Full.add(Some), Full);
330 EXPECT_EQ(Full.add(Wrap), Full);
331 EXPECT_EQ(Empty.add(Empty), Empty);
332 EXPECT_EQ(Empty.add(One), Empty);
333 EXPECT_EQ(Empty.add(Some), Empty);
334 EXPECT_EQ(Empty.add(Wrap), Empty);
335 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty);
336 EXPECT_EQ(Some.add(APInt(16, 4)),
337 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
338 EXPECT_EQ(Wrap.add(APInt(16, 4)),
339 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
340 EXPECT_EQ(One.add(APInt(16, 4)),
341 ConstantRange(APInt(16, 0xe)));
344 TEST_F(ConstantRangeTest, Sub) {
345 EXPECT_EQ(Full.sub(APInt(16, 4)), Full);
346 EXPECT_EQ(Full.sub(Full), Full);
347 EXPECT_EQ(Full.sub(Empty), Empty);
348 EXPECT_EQ(Full.sub(One), Full);
349 EXPECT_EQ(Full.sub(Some), Full);
350 EXPECT_EQ(Full.sub(Wrap), Full);
351 EXPECT_EQ(Empty.sub(Empty), Empty);
352 EXPECT_EQ(Empty.sub(One), Empty);
353 EXPECT_EQ(Empty.sub(Some), Empty);
354 EXPECT_EQ(Empty.sub(Wrap), Empty);
355 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty);
356 EXPECT_EQ(Some.sub(APInt(16, 4)),
357 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
358 EXPECT_EQ(Some.sub(Some),
359 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0)));
360 EXPECT_EQ(Wrap.sub(APInt(16, 4)),
361 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
362 EXPECT_EQ(One.sub(APInt(16, 4)),
363 ConstantRange(APInt(16, 0x6)));
366 TEST_F(ConstantRangeTest, Multiply) {
367 EXPECT_EQ(Full.multiply(Full), Full);
368 EXPECT_EQ(Full.multiply(Empty), Empty);
369 EXPECT_EQ(Full.multiply(One), Full);
370 EXPECT_EQ(Full.multiply(Some), Full);
371 EXPECT_EQ(Full.multiply(Wrap), Full);
372 EXPECT_EQ(Empty.multiply(Empty), Empty);
373 EXPECT_EQ(Empty.multiply(One), Empty);
374 EXPECT_EQ(Empty.multiply(Some), Empty);
375 EXPECT_EQ(Empty.multiply(Wrap), Empty);
376 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa),
377 APInt(16, 0xa*0xa + 1)));
378 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa),
379 APInt(16, 0xa*0xaa9 + 1)));
380 EXPECT_EQ(One.multiply(Wrap), Full);
381 EXPECT_EQ(Some.multiply(Some), Full);
382 EXPECT_EQ(Some.multiply(Wrap), Full);
383 EXPECT_EQ(Wrap.multiply(Wrap), Full);
385 ConstantRange Zero(APInt(16, 0));
386 EXPECT_EQ(Zero.multiply(Full), Zero);
387 EXPECT_EQ(Zero.multiply(Some), Zero);
388 EXPECT_EQ(Zero.multiply(Wrap), Zero);
389 EXPECT_EQ(Full.multiply(Zero), Zero);
390 EXPECT_EQ(Some.multiply(Zero), Zero);
391 EXPECT_EQ(Wrap.multiply(Zero), Zero);
393 // http://llvm.org/PR4545
394 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply(
395 ConstantRange(APInt(4, 6), APInt(4, 2))),
396 ConstantRange(4, /*isFullSet=*/true));
399 TEST_F(ConstantRangeTest, UMax) {
400 EXPECT_EQ(Full.umax(Full), Full);
401 EXPECT_EQ(Full.umax(Empty), Empty);
402 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
403 EXPECT_EQ(Full.umax(Wrap), Full);
404 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
405 EXPECT_EQ(Empty.umax(Empty), Empty);
406 EXPECT_EQ(Empty.umax(Some), Empty);
407 EXPECT_EQ(Empty.umax(Wrap), Empty);
408 EXPECT_EQ(Empty.umax(One), Empty);
409 EXPECT_EQ(Some.umax(Some), Some);
410 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
411 EXPECT_EQ(Some.umax(One), Some);
412 // TODO: ConstantRange is currently over-conservative here.
413 EXPECT_EQ(Wrap.umax(Wrap), Full);
414 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
415 EXPECT_EQ(One.umax(One), One);
418 TEST_F(ConstantRangeTest, SMax) {
419 EXPECT_EQ(Full.smax(Full), Full);
420 EXPECT_EQ(Full.smax(Empty), Empty);
421 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
422 APInt::getSignedMinValue(16)));
423 EXPECT_EQ(Full.smax(Wrap), Full);
424 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa),
425 APInt::getSignedMinValue(16)));
426 EXPECT_EQ(Empty.smax(Empty), Empty);
427 EXPECT_EQ(Empty.smax(Some), Empty);
428 EXPECT_EQ(Empty.smax(Wrap), Empty);
429 EXPECT_EQ(Empty.smax(One), Empty);
430 EXPECT_EQ(Some.smax(Some), Some);
431 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa),
432 APInt(16, (uint64_t)INT16_MIN)));
433 EXPECT_EQ(Some.smax(One), Some);
434 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa),
435 APInt(16, (uint64_t)INT16_MIN)));
436 EXPECT_EQ(One.smax(One), One);
439 TEST_F(ConstantRangeTest, UDiv) {
440 EXPECT_EQ(Full.udiv(Full), Full);
441 EXPECT_EQ(Full.udiv(Empty), Empty);
442 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0),
443 APInt(16, 0xffff / 0xa + 1)));
444 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0),
445 APInt(16, 0xffff / 0xa + 1)));
446 EXPECT_EQ(Full.udiv(Wrap), Full);
447 EXPECT_EQ(Empty.udiv(Empty), Empty);
448 EXPECT_EQ(Empty.udiv(One), Empty);
449 EXPECT_EQ(Empty.udiv(Some), Empty);
450 EXPECT_EQ(Empty.udiv(Wrap), Empty);
451 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1)));
452 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2)));
453 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
454 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111)));
455 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
456 EXPECT_EQ(Wrap.udiv(Wrap), Full);
459 TEST_F(ConstantRangeTest, Shl) {
460 EXPECT_EQ(Full.shl(Full), Full);
461 EXPECT_EQ(Full.shl(Empty), Empty);
462 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1)
463 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1)
464 EXPECT_EQ(Full.shl(Wrap), Full);
465 EXPECT_EQ(Empty.shl(Empty), Empty);
466 EXPECT_EQ(Empty.shl(One), Empty);
467 EXPECT_EQ(Empty.shl(Some), Empty);
468 EXPECT_EQ(Empty.shl(Wrap), Empty);
469 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa),
470 APInt(16, (0xa << 0xa) + 1)));
471 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0)
472 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1)
473 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01)
474 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1)
475 EXPECT_EQ(Wrap.shl(Wrap), Full);
478 TEST_F(ConstantRangeTest, Lshr) {
479 EXPECT_EQ(Full.lshr(Full), Full);
480 EXPECT_EQ(Full.lshr(Empty), Empty);
481 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0),
482 APInt(16, (0xffff >> 0xa) + 1)));
483 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0),
484 APInt(16, (0xffff >> 0xa) + 1)));
485 EXPECT_EQ(Full.lshr(Wrap), Full);
486 EXPECT_EQ(Empty.lshr(Empty), Empty);
487 EXPECT_EQ(Empty.lshr(One), Empty);
488 EXPECT_EQ(Empty.lshr(Some), Empty);
489 EXPECT_EQ(Empty.lshr(Wrap), Empty);
490 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0)));
491 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0)));
492 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
493 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0),
494 APInt(16, (0xaaa >> 0xa) + 1)));
495 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
496 EXPECT_EQ(Wrap.lshr(Wrap), Full);
499 TEST(ConstantRange, MakeICmpRegion) {
501 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32));
502 EXPECT_TRUE(ConstantRange::makeICmpRegion(ICmpInst::ICMP_SGT,
506 } // anonymous namespace