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"
12 #include "gtest/gtest.h"
18 class ConstantRangeTest : public ::testing::Test {
20 static ConstantRange Full;
21 static ConstantRange Empty;
22 static ConstantRange One;
23 static ConstantRange Some;
24 static ConstantRange Wrap;
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));
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)));
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)));
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)));
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)));
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)));
83 TEST_F(ConstantRangeTest, Equality) {
84 EXPECT_EQ(Full, Full);
85 EXPECT_EQ(Empty, Empty);
87 EXPECT_EQ(Some, Some);
88 EXPECT_EQ(Wrap, Wrap);
89 EXPECT_NE(Full, Empty);
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);
98 EXPECT_NE(Some, Wrap);
101 TEST_F(ConstantRangeTest, SingleElement) {
102 EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL));
103 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL));
104 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa));
105 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL));
106 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL));
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());
115 TEST_F(ConstantRangeTest, GetSetSize) {
116 EXPECT_EQ(Full.getSetSize(), APInt(16, 0));
117 EXPECT_EQ(Empty.getSetSize(), APInt(16, 0));
118 EXPECT_EQ(One.getSetSize(), APInt(16, 1));
119 EXPECT_EQ(Some.getSetSize(), APInt(16, 0xaa0));
120 EXPECT_EQ(Wrap.getSetSize(), APInt(16, 0x10000 - 0xaa0));
123 TEST_F(ConstantRangeTest, GetMinsAndMaxes) {
124 EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX));
125 EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa));
126 EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9));
127 EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX));
129 EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0));
130 EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa));
131 EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa));
132 EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0));
134 EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX));
135 EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa));
136 EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9));
137 EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX));
139 EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
140 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa));
141 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa));
142 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
145 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(),
149 TEST_F(ConstantRangeTest, Trunc) {
150 ConstantRange TFull = Full.truncate(10);
151 ConstantRange TEmpty = Empty.truncate(10);
152 ConstantRange TOne = One.truncate(10);
153 ConstantRange TSome = Some.truncate(10);
154 ConstantRange TWrap = Wrap.truncate(10);
155 EXPECT_TRUE(TFull.isFullSet());
156 EXPECT_TRUE(TEmpty.isEmptySet());
157 EXPECT_EQ(TOne, ConstantRange(APInt(One.getLower()).trunc(10),
158 APInt(One.getUpper()).trunc(10)));
159 EXPECT_TRUE(TSome.isFullSet());
162 TEST_F(ConstantRangeTest, ZExt) {
163 ConstantRange ZFull = Full.zeroExtend(20);
164 ConstantRange ZEmpty = Empty.zeroExtend(20);
165 ConstantRange ZOne = One.zeroExtend(20);
166 ConstantRange ZSome = Some.zeroExtend(20);
167 ConstantRange ZWrap = Wrap.zeroExtend(20);
168 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
169 EXPECT_TRUE(ZEmpty.isEmptySet());
170 EXPECT_EQ(ZOne, ConstantRange(APInt(One.getLower()).zext(20),
171 APInt(One.getUpper()).zext(20)));
172 EXPECT_EQ(ZSome, ConstantRange(APInt(Some.getLower()).zext(20),
173 APInt(Some.getUpper()).zext(20)));
174 EXPECT_EQ(ZWrap, ConstantRange(APInt(Wrap.getLower()).zext(20),
175 APInt(Wrap.getUpper()).zext(20)));
178 TEST_F(ConstantRangeTest, SExt) {
179 ConstantRange SFull = Full.signExtend(20);
180 ConstantRange SEmpty = Empty.signExtend(20);
181 ConstantRange SOne = One.signExtend(20);
182 ConstantRange SSome = Some.signExtend(20);
183 ConstantRange SWrap = Wrap.signExtend(20);
184 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
185 APInt(20, INT16_MAX + 1, true)));
186 EXPECT_TRUE(SEmpty.isEmptySet());
187 EXPECT_EQ(SOne, ConstantRange(APInt(One.getLower()).sext(20),
188 APInt(One.getUpper()).sext(20)));
189 EXPECT_EQ(SSome, ConstantRange(APInt(Some.getLower()).sext(20),
190 APInt(Some.getUpper()).sext(20)));
191 EXPECT_EQ(SWrap, ConstantRange(APInt(Wrap.getLower()).sext(20),
192 APInt(Wrap.getUpper()).sext(20)));
195 TEST_F(ConstantRangeTest, IntersectWith) {
196 EXPECT_EQ(Empty.intersectWith(Full), Empty);
197 EXPECT_EQ(Empty.intersectWith(Empty), Empty);
198 EXPECT_EQ(Empty.intersectWith(One), Empty);
199 EXPECT_EQ(Empty.intersectWith(Some), Empty);
200 EXPECT_EQ(Empty.intersectWith(Wrap), Empty);
201 EXPECT_EQ(Full.intersectWith(Full), Full);
202 EXPECT_EQ(Some.intersectWith(Some), Some);
203 EXPECT_EQ(Some.intersectWith(One), One);
204 EXPECT_EQ(Full.intersectWith(One), One);
205 EXPECT_EQ(Full.intersectWith(Some), Some);
206 EXPECT_EQ(Some.intersectWith(Wrap), Empty);
207 EXPECT_EQ(One.intersectWith(Wrap), Empty);
208 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One));
210 // Klee generated testcase from PR4545.
211 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like
212 // 01..4.6789ABCDEF where the dots represent values not in the intersection.
213 ConstantRange LHS(APInt(16, 4), APInt(16, 2));
214 ConstantRange RHS(APInt(16, 6), APInt(16, 5));
215 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
218 TEST_F(ConstantRangeTest, UnionWith) {
219 EXPECT_EQ(Wrap.unionWith(One),
220 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
221 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One));
222 EXPECT_EQ(Empty.unionWith(Empty), Empty);
223 EXPECT_EQ(Full.unionWith(Full), Full);
224 EXPECT_EQ(Some.unionWith(Wrap), Full);
227 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith(
228 ConstantRange(APInt(16, 0), APInt(16, 8))),
229 ConstantRange(APInt(16, 14), APInt(16, 8)));
230 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith(
231 ConstantRange(APInt(16, 4), APInt(16, 0))),
233 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith(
234 ConstantRange(APInt(16, 2), APInt(16, 1))),
238 TEST_F(ConstantRangeTest, SubtractAPInt) {
239 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full);
240 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty);
241 EXPECT_EQ(Some.subtract(APInt(16, 4)),
242 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
243 EXPECT_EQ(Wrap.subtract(APInt(16, 4)),
244 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
245 EXPECT_EQ(One.subtract(APInt(16, 4)),
246 ConstantRange(APInt(16, 0x6)));
249 TEST_F(ConstantRangeTest, Add) {
250 EXPECT_EQ(Full.add(APInt(16, 4)), Full);
251 EXPECT_EQ(Full.add(Full), Full);
252 EXPECT_EQ(Full.add(Empty), Empty);
253 EXPECT_EQ(Full.add(One), Full);
254 EXPECT_EQ(Full.add(Some), Full);
255 EXPECT_EQ(Full.add(Wrap), Full);
256 EXPECT_EQ(Empty.add(Empty), Empty);
257 EXPECT_EQ(Empty.add(One), Empty);
258 EXPECT_EQ(Empty.add(Some), Empty);
259 EXPECT_EQ(Empty.add(Wrap), Empty);
260 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty);
261 EXPECT_EQ(Some.add(APInt(16, 4)),
262 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
263 EXPECT_EQ(Wrap.add(APInt(16, 4)),
264 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
265 EXPECT_EQ(One.add(APInt(16, 4)),
266 ConstantRange(APInt(16, 0xe)));
269 TEST_F(ConstantRangeTest, Multiply) {
270 EXPECT_EQ(Full.multiply(Full), Full);
271 EXPECT_EQ(Full.multiply(Empty), Empty);
272 EXPECT_EQ(Full.multiply(One), Full);
273 EXPECT_EQ(Full.multiply(Some), Full);
274 EXPECT_EQ(Full.multiply(Wrap), Full);
275 EXPECT_EQ(Empty.multiply(Empty), Empty);
276 EXPECT_EQ(Empty.multiply(One), Empty);
277 EXPECT_EQ(Empty.multiply(Some), Empty);
278 EXPECT_EQ(Empty.multiply(Wrap), Empty);
279 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa),
280 APInt(16, 0xa*0xa + 1)));
281 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa),
282 APInt(16, 0xa*0xaa9 + 1)));
283 EXPECT_EQ(One.multiply(Wrap), Full);
284 EXPECT_EQ(Some.multiply(Some), Full);
285 EXPECT_EQ(Some.multiply(Wrap), Full);
286 EXPECT_EQ(Wrap.multiply(Wrap), Full);
288 // http://llvm.org/PR4545
289 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply(
290 ConstantRange(APInt(4, 6), APInt(4, 2))),
291 ConstantRange(4, /*isFullSet=*/true));
294 TEST_F(ConstantRangeTest, UMax) {
295 EXPECT_EQ(Full.umax(Full), Full);
296 EXPECT_EQ(Full.umax(Empty), Empty);
297 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
298 EXPECT_EQ(Full.umax(Wrap), Full);
299 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
300 EXPECT_EQ(Empty.umax(Empty), Empty);
301 EXPECT_EQ(Empty.umax(Some), Empty);
302 EXPECT_EQ(Empty.umax(Wrap), Empty);
303 EXPECT_EQ(Empty.umax(One), Empty);
304 EXPECT_EQ(Some.umax(Some), Some);
305 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
306 EXPECT_EQ(Some.umax(One), Some);
307 // TODO: ConstantRange is currently over-conservative here.
308 EXPECT_EQ(Wrap.umax(Wrap), Full);
309 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
310 EXPECT_EQ(One.umax(One), One);
313 TEST_F(ConstantRangeTest, SMax) {
314 EXPECT_EQ(Full.smax(Full), Full);
315 EXPECT_EQ(Full.smax(Empty), Empty);
316 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
317 APInt::getSignedMinValue(16)));
318 EXPECT_EQ(Full.smax(Wrap), Full);
319 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa),
320 APInt::getSignedMinValue(16)));
321 EXPECT_EQ(Empty.smax(Empty), Empty);
322 EXPECT_EQ(Empty.smax(Some), Empty);
323 EXPECT_EQ(Empty.smax(Wrap), Empty);
324 EXPECT_EQ(Empty.smax(One), Empty);
325 EXPECT_EQ(Some.smax(Some), Some);
326 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa),
327 APInt(16, (uint64_t)INT16_MIN)));
328 EXPECT_EQ(Some.smax(One), Some);
329 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa),
330 APInt(16, (uint64_t)INT16_MIN)));
331 EXPECT_EQ(One.smax(One), One);
334 TEST_F(ConstantRangeTest, UDiv) {
335 EXPECT_EQ(Full.udiv(Full), Full);
336 EXPECT_EQ(Full.udiv(Empty), Empty);
337 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0),
338 APInt(16, 0xffff / 0xa + 1)));
339 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0),
340 APInt(16, 0xffff / 0xa + 1)));
341 EXPECT_EQ(Full.udiv(Wrap), Full);
342 EXPECT_EQ(Empty.udiv(Empty), Empty);
343 EXPECT_EQ(Empty.udiv(One), Empty);
344 EXPECT_EQ(Empty.udiv(Some), Empty);
345 EXPECT_EQ(Empty.udiv(Wrap), Empty);
346 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1)));
347 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2)));
348 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
349 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111)));
350 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
351 EXPECT_EQ(Wrap.udiv(Wrap), Full);
354 } // anonymous namespace