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_FALSE(Full.isWrappedSet());
37 EXPECT_TRUE(Full.contains(APInt(16, 0x0)));
38 EXPECT_TRUE(Full.contains(APInt(16, 0x9)));
39 EXPECT_TRUE(Full.contains(APInt(16, 0xa)));
40 EXPECT_TRUE(Full.contains(APInt(16, 0xaa9)));
41 EXPECT_TRUE(Full.contains(APInt(16, 0xaaa)));
43 EXPECT_FALSE(Empty.isFullSet());
44 EXPECT_TRUE(Empty.isEmptySet());
45 EXPECT_FALSE(Empty.isWrappedSet());
46 EXPECT_FALSE(Empty.contains(APInt(16, 0x0)));
47 EXPECT_FALSE(Empty.contains(APInt(16, 0x9)));
48 EXPECT_FALSE(Empty.contains(APInt(16, 0xa)));
49 EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9)));
50 EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa)));
52 EXPECT_FALSE(One.isFullSet());
53 EXPECT_FALSE(One.isEmptySet());
54 EXPECT_FALSE(One.isWrappedSet());
55 EXPECT_FALSE(One.contains(APInt(16, 0x0)));
56 EXPECT_FALSE(One.contains(APInt(16, 0x9)));
57 EXPECT_TRUE(One.contains(APInt(16, 0xa)));
58 EXPECT_FALSE(One.contains(APInt(16, 0xaa9)));
59 EXPECT_FALSE(One.contains(APInt(16, 0xaaa)));
61 EXPECT_FALSE(Some.isFullSet());
62 EXPECT_FALSE(Some.isEmptySet());
63 EXPECT_FALSE(Some.isWrappedSet());
64 EXPECT_FALSE(Some.contains(APInt(16, 0x0)));
65 EXPECT_FALSE(Some.contains(APInt(16, 0x9)));
66 EXPECT_TRUE(Some.contains(APInt(16, 0xa)));
67 EXPECT_TRUE(Some.contains(APInt(16, 0xaa9)));
68 EXPECT_FALSE(Some.contains(APInt(16, 0xaaa)));
70 EXPECT_FALSE(Wrap.isFullSet());
71 EXPECT_FALSE(Wrap.isEmptySet());
72 EXPECT_TRUE(Wrap.isWrappedSet());
73 EXPECT_TRUE(Wrap.contains(APInt(16, 0x0)));
74 EXPECT_TRUE(Wrap.contains(APInt(16, 0x9)));
75 EXPECT_FALSE(Wrap.contains(APInt(16, 0xa)));
76 EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9)));
77 EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa)));
80 TEST_F(ConstantRangeTest, Equality) {
81 EXPECT_EQ(Full, Full);
82 EXPECT_EQ(Empty, Empty);
84 EXPECT_EQ(Some, Some);
85 EXPECT_EQ(Wrap, Wrap);
86 EXPECT_NE(Full, Empty);
88 EXPECT_NE(Full, Some);
89 EXPECT_NE(Full, Wrap);
90 EXPECT_NE(Empty, One);
91 EXPECT_NE(Empty, Some);
92 EXPECT_NE(Empty, Wrap);
95 EXPECT_NE(Some, Wrap);
98 TEST_F(ConstantRangeTest, SingleElement) {
99 EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL));
100 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL));
101 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa));
102 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL));
103 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL));
105 EXPECT_FALSE(Full.isSingleElement());
106 EXPECT_FALSE(Empty.isSingleElement());
107 EXPECT_TRUE(One.isSingleElement());
108 EXPECT_FALSE(Some.isSingleElement());
109 EXPECT_FALSE(Wrap.isSingleElement());
112 TEST_F(ConstantRangeTest, GetSetSize) {
113 EXPECT_EQ(Full.getSetSize(), APInt(16, 0));
114 EXPECT_EQ(Empty.getSetSize(), APInt(16, 0));
115 EXPECT_EQ(One.getSetSize(), APInt(16, 1));
116 EXPECT_EQ(Some.getSetSize(), APInt(16, 0xaa0));
117 EXPECT_EQ(Wrap.getSetSize(), APInt(16, 0x10000 - 0xaa0));
120 TEST_F(ConstantRangeTest, GetMinsAndMaxes) {
121 EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX));
122 EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa));
123 EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9));
124 EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX));
126 EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0));
127 EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa));
128 EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa));
129 EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0));
131 EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX));
132 EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa));
133 EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9));
134 EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX));
136 EXPECT_EQ(Full.getSignedMin(), APInt(16, INT16_MIN));
137 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa));
138 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa));
139 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, INT16_MIN));
142 TEST_F(ConstantRangeTest, Trunc) {
143 ConstantRange TFull = Full.truncate(10);
144 ConstantRange TEmpty = Empty.truncate(10);
145 ConstantRange TOne = One.truncate(10);
146 ConstantRange TSome = Some.truncate(10);
147 ConstantRange TWrap = Wrap.truncate(10);
148 EXPECT_TRUE(TFull.isFullSet());
149 EXPECT_TRUE(TEmpty.isEmptySet());
150 EXPECT_EQ(TOne, ConstantRange(APInt(One.getLower()).trunc(10),
151 APInt(One.getUpper()).trunc(10)));
152 EXPECT_TRUE(TSome.isFullSet());
155 TEST_F(ConstantRangeTest, ZExt) {
156 ConstantRange ZFull = Full.zeroExtend(20);
157 ConstantRange ZEmpty = Empty.zeroExtend(20);
158 ConstantRange ZOne = One.zeroExtend(20);
159 ConstantRange ZSome = Some.zeroExtend(20);
160 ConstantRange ZWrap = Wrap.zeroExtend(20);
161 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
162 EXPECT_TRUE(ZEmpty.isEmptySet());
163 EXPECT_EQ(ZOne, ConstantRange(APInt(One.getLower()).zext(20),
164 APInt(One.getUpper()).zext(20)));
165 EXPECT_EQ(ZSome, ConstantRange(APInt(Some.getLower()).zext(20),
166 APInt(Some.getUpper()).zext(20)));
167 EXPECT_EQ(ZWrap, ConstantRange(APInt(Wrap.getLower()).zext(20),
168 APInt(Wrap.getUpper()).zext(20)));
171 TEST_F(ConstantRangeTest, SExt) {
172 ConstantRange SFull = Full.signExtend(20);
173 ConstantRange SEmpty = Empty.signExtend(20);
174 ConstantRange SOne = One.signExtend(20);
175 ConstantRange SSome = Some.signExtend(20);
176 ConstantRange SWrap = Wrap.signExtend(20);
177 EXPECT_EQ(SFull, ConstantRange(APInt(20, INT16_MIN, true),
178 APInt(20, INT16_MAX, true)));
179 EXPECT_TRUE(SEmpty.isEmptySet());
180 EXPECT_EQ(SOne, ConstantRange(APInt(One.getLower()).sext(20),
181 APInt(One.getUpper()).sext(20)));
182 EXPECT_EQ(SSome, ConstantRange(APInt(Some.getLower()).sext(20),
183 APInt(Some.getUpper()).sext(20)));
184 EXPECT_EQ(SWrap, ConstantRange(APInt(Wrap.getLower()).sext(20),
185 APInt(Wrap.getUpper()).sext(20)));
188 TEST_F(ConstantRangeTest, IntersectWith) {
189 EXPECT_TRUE(Empty.intersectWith(Full).isEmptySet());
190 EXPECT_TRUE(Empty.intersectWith(Empty).isEmptySet());
191 EXPECT_TRUE(Empty.intersectWith(One).isEmptySet());
192 EXPECT_TRUE(Empty.intersectWith(Some).isEmptySet());
193 EXPECT_TRUE(Empty.intersectWith(Wrap).isEmptySet());
194 EXPECT_TRUE(Full.intersectWith(Full).isFullSet());
195 EXPECT_TRUE(Some.intersectWith(Some) == Some);
196 EXPECT_TRUE(Some.intersectWith(One) == One);
197 EXPECT_TRUE(Full.intersectWith(One) == One);
198 EXPECT_TRUE(Full.intersectWith(Some) == Some);
199 EXPECT_TRUE(Some.intersectWith(Wrap).isEmptySet());
200 EXPECT_TRUE(One.intersectWith(Wrap).isEmptySet());
201 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One));
204 TEST_F(ConstantRangeTest, MaximalIntersectWith) {
205 EXPECT_TRUE(Empty.maximalIntersectWith(Full).isEmptySet());
206 EXPECT_TRUE(Empty.maximalIntersectWith(Empty).isEmptySet());
207 EXPECT_TRUE(Empty.maximalIntersectWith(One).isEmptySet());
208 EXPECT_TRUE(Empty.maximalIntersectWith(Some).isEmptySet());
209 EXPECT_TRUE(Empty.maximalIntersectWith(Wrap).isEmptySet());
210 EXPECT_TRUE(Full.maximalIntersectWith(Full).isFullSet());
211 EXPECT_TRUE(Some.maximalIntersectWith(Some) == Some);
212 EXPECT_TRUE(Some.maximalIntersectWith(One) == One);
213 EXPECT_TRUE(Full.maximalIntersectWith(One) == One);
214 EXPECT_TRUE(Full.maximalIntersectWith(Some) == Some);
215 EXPECT_TRUE(Some.maximalIntersectWith(Wrap).isEmptySet());
216 EXPECT_TRUE(One.maximalIntersectWith(Wrap).isEmptySet());
217 EXPECT_EQ(One.maximalIntersectWith(Wrap), Wrap.maximalIntersectWith(One));
220 TEST_F(ConstantRangeTest, UnionWith) {
221 EXPECT_EQ(Wrap.unionWith(One),
222 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
223 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One));
224 EXPECT_TRUE(Empty.unionWith(Empty).isEmptySet());
225 EXPECT_TRUE(Full.unionWith(Full).isFullSet());
226 EXPECT_TRUE(Some.unionWith(Wrap).isFullSet());
229 TEST_F(ConstantRangeTest, SubtractAPInt) {
230 EXPECT_TRUE(Full.subtract(APInt(16, 4)).isFullSet());
231 EXPECT_TRUE(Empty.subtract(APInt(16, 4)).isEmptySet());
232 EXPECT_EQ(Some.subtract(APInt(16, 4)),
233 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
234 EXPECT_EQ(Wrap.subtract(APInt(16, 4)),
235 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
236 EXPECT_EQ(One.subtract(APInt(16, 4)),
237 ConstantRange(APInt(16, 0x6)));
240 TEST_F(ConstantRangeTest, Add) {
241 EXPECT_TRUE(Full.add(APInt(16, 4)).isFullSet());
242 EXPECT_EQ(Full.add(Full), Full);
243 EXPECT_EQ(Full.add(Empty), Empty);
244 EXPECT_EQ(Full.add(One), Full);
245 EXPECT_EQ(Full.add(Some), Full);
246 EXPECT_EQ(Full.add(Wrap), Full);
247 EXPECT_EQ(Empty.add(Empty), Empty);
248 EXPECT_EQ(Empty.add(One), Empty);
249 EXPECT_EQ(Empty.add(Some), Empty);
250 EXPECT_EQ(Empty.add(Wrap), Empty);
251 EXPECT_TRUE(Empty.add(APInt(16, 4)).isEmptySet());
252 EXPECT_EQ(Some.add(APInt(16, 4)),
253 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
254 EXPECT_EQ(Wrap.add(APInt(16, 4)),
255 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
256 EXPECT_EQ(One.add(APInt(16, 4)),
257 ConstantRange(APInt(16, 0xe)));
260 TEST_F(ConstantRangeTest, Multiply) {
261 EXPECT_EQ(Full.multiply(Full), Full);
262 EXPECT_EQ(Full.multiply(Empty), Empty);
263 EXPECT_EQ(Full.multiply(One), Full);
264 EXPECT_EQ(Full.multiply(Some), Full);
265 EXPECT_EQ(Full.multiply(Wrap), Full);
266 EXPECT_EQ(Empty.multiply(Empty), Empty);
267 EXPECT_EQ(Empty.multiply(One), Empty);
268 EXPECT_EQ(Empty.multiply(Some), Empty);
269 EXPECT_EQ(Empty.multiply(Wrap), Empty);
270 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa),
271 APInt(16, 0xa*0xa + 1)));
272 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa),
273 APInt(16, 0xa*0xaa9 + 1)));
274 EXPECT_TRUE(One.multiply(Wrap).isFullSet());
275 EXPECT_TRUE(Some.multiply(Some).isFullSet());
276 EXPECT_EQ(Some.multiply(Wrap), Full);
277 EXPECT_EQ(Wrap.multiply(Wrap), Full);
280 TEST_F(ConstantRangeTest, UMax) {
281 EXPECT_TRUE(Full.umax(Full).isFullSet());
282 EXPECT_TRUE(Full.umax(Empty).isEmptySet());
283 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
284 EXPECT_TRUE(Full.umax(Wrap).isFullSet());
285 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
286 EXPECT_EQ(Empty.umax(Empty), Empty);
287 EXPECT_EQ(Empty.umax(Some), Empty);
288 EXPECT_EQ(Empty.umax(Wrap), Empty);
289 EXPECT_EQ(Empty.umax(One), Empty);
290 EXPECT_EQ(Some.umax(Some), Some);
291 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
292 EXPECT_EQ(Some.umax(One), Some);
293 // TODO: ConstantRange is currently over-conservative here.
294 EXPECT_EQ(Wrap.umax(Wrap), Full);
295 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
296 EXPECT_EQ(One.umax(One), One);
299 TEST_F(ConstantRangeTest, SMax) {
300 EXPECT_TRUE(Full.smax(Full).isFullSet());
301 EXPECT_TRUE(Full.smax(Empty).isEmptySet());
302 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
303 APInt::getSignedMinValue(16)));
304 EXPECT_TRUE(Full.smax(Wrap).isFullSet());
305 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa),
306 APInt::getSignedMinValue(16)));
307 EXPECT_EQ(Empty.smax(Empty), Empty);
308 EXPECT_EQ(Empty.smax(Some), Empty);
309 EXPECT_EQ(Empty.smax(Wrap), Empty);
310 EXPECT_EQ(Empty.smax(One), Empty);
311 EXPECT_EQ(Some.smax(Some), Some);
312 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa),
313 APInt(16, INT16_MIN)));
314 EXPECT_EQ(Some.smax(One), Some);
315 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa),
316 APInt(16, INT16_MIN)));
317 EXPECT_EQ(One.smax(One), One);
320 TEST_F(ConstantRangeTest, UDiv) {
321 EXPECT_EQ(Full.udiv(Full), Full);
322 EXPECT_EQ(Full.udiv(Empty), Empty);
323 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0),
324 APInt(16, 0xffff / 0xa + 1)));
325 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0),
326 APInt(16, 0xffff / 0xa + 1)));
327 EXPECT_EQ(Full.udiv(Wrap), Full);
328 EXPECT_EQ(Empty.udiv(Empty), Empty);
329 EXPECT_EQ(Empty.udiv(One), Empty);
330 EXPECT_EQ(Empty.udiv(Some), Empty);
331 EXPECT_EQ(Empty.udiv(Wrap), Empty);
332 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1)));
333 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2)));
334 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb)));
335 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111)));
336 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
337 EXPECT_EQ(Wrap.udiv(Wrap), Full);
340 } // anonymous namespace