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Dan Gohmana3755d82009-07-09 22:07:27 +00001//===- 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"
Chris Lattner8142ce52009-08-23 06:32:25 +000011#include "llvm/Support/raw_ostream.h"
Dan Gohmana3755d82009-07-09 22:07:27 +000012
13#include "gtest/gtest.h"
14
15using namespace llvm;
16
17namespace {
18
Daniel Dunbar25714402009-08-24 02:02:58 +000019// Support APInt output to an std::ostream.
20inline std::ostream &operator<<(std::ostream &OS, const APInt &Value) {
21 raw_os_ostream RawOS(OS);
22 RawOS << Value;
23 return OS;
24}
25
Nick Lewycky44b3e8d2009-07-11 18:43:20 +000026class ConstantRangeTest : public ::testing::Test {
27protected:
28 static ConstantRange Full;
29 static ConstantRange Empty;
30 static ConstantRange One;
31 static ConstantRange Some;
32 static ConstantRange Wrap;
33};
Dan Gohmana3755d82009-07-09 22:07:27 +000034
Nick Lewycky44b3e8d2009-07-11 18:43:20 +000035ConstantRange ConstantRangeTest::Full(16);
36ConstantRange ConstantRangeTest::Empty(16, false);
37ConstantRange ConstantRangeTest::One(APInt(16, 0xa));
38ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa));
39ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa));
40
41TEST_F(ConstantRangeTest, Basics) {
Dan Gohmana3755d82009-07-09 22:07:27 +000042 EXPECT_TRUE(Full.isFullSet());
43 EXPECT_FALSE(Full.isEmptySet());
44 EXPECT_FALSE(Full.isWrappedSet());
45 EXPECT_TRUE(Full.contains(APInt(16, 0x0)));
46 EXPECT_TRUE(Full.contains(APInt(16, 0x9)));
47 EXPECT_TRUE(Full.contains(APInt(16, 0xa)));
48 EXPECT_TRUE(Full.contains(APInt(16, 0xaa9)));
49 EXPECT_TRUE(Full.contains(APInt(16, 0xaaa)));
50
51 EXPECT_FALSE(Empty.isFullSet());
52 EXPECT_TRUE(Empty.isEmptySet());
53 EXPECT_FALSE(Empty.isWrappedSet());
54 EXPECT_FALSE(Empty.contains(APInt(16, 0x0)));
55 EXPECT_FALSE(Empty.contains(APInt(16, 0x9)));
56 EXPECT_FALSE(Empty.contains(APInt(16, 0xa)));
57 EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9)));
58 EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa)));
59
60 EXPECT_FALSE(One.isFullSet());
61 EXPECT_FALSE(One.isEmptySet());
62 EXPECT_FALSE(One.isWrappedSet());
63 EXPECT_FALSE(One.contains(APInt(16, 0x0)));
64 EXPECT_FALSE(One.contains(APInt(16, 0x9)));
65 EXPECT_TRUE(One.contains(APInt(16, 0xa)));
66 EXPECT_FALSE(One.contains(APInt(16, 0xaa9)));
67 EXPECT_FALSE(One.contains(APInt(16, 0xaaa)));
68
69 EXPECT_FALSE(Some.isFullSet());
70 EXPECT_FALSE(Some.isEmptySet());
71 EXPECT_FALSE(Some.isWrappedSet());
72 EXPECT_FALSE(Some.contains(APInt(16, 0x0)));
73 EXPECT_FALSE(Some.contains(APInt(16, 0x9)));
74 EXPECT_TRUE(Some.contains(APInt(16, 0xa)));
75 EXPECT_TRUE(Some.contains(APInt(16, 0xaa9)));
76 EXPECT_FALSE(Some.contains(APInt(16, 0xaaa)));
77
78 EXPECT_FALSE(Wrap.isFullSet());
79 EXPECT_FALSE(Wrap.isEmptySet());
80 EXPECT_TRUE(Wrap.isWrappedSet());
81 EXPECT_TRUE(Wrap.contains(APInt(16, 0x0)));
82 EXPECT_TRUE(Wrap.contains(APInt(16, 0x9)));
83 EXPECT_FALSE(Wrap.contains(APInt(16, 0xa)));
84 EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9)));
85 EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +000086}
Dan Gohmana3755d82009-07-09 22:07:27 +000087
Nick Lewycky44b3e8d2009-07-11 18:43:20 +000088TEST_F(ConstantRangeTest, Equality) {
Chris Lattner8142ce52009-08-23 06:32:25 +000089 EXPECT_TRUE(Full == Full);
90 EXPECT_TRUE(Empty == Empty);
91 EXPECT_TRUE(One == One);
92 EXPECT_TRUE(Some == Some);
93 EXPECT_TRUE(Wrap == Wrap);
94 EXPECT_TRUE(Full != Empty);
95 EXPECT_TRUE(Full != One);
96 EXPECT_TRUE(Full != Some);
97 EXPECT_TRUE(Full != Wrap);
98 EXPECT_TRUE(Empty != One);
99 EXPECT_TRUE(Empty != Some);
100 EXPECT_TRUE(Empty != Wrap);
101 EXPECT_TRUE(One != Some);
102 EXPECT_TRUE(One != Wrap);
103 EXPECT_TRUE(Some != Wrap);
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000104}
Dan Gohmana3755d82009-07-09 22:07:27 +0000105
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000106TEST_F(ConstantRangeTest, SingleElement) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000107 EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL));
108 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL));
109 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa));
110 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL));
111 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL));
112
113 EXPECT_FALSE(Full.isSingleElement());
114 EXPECT_FALSE(Empty.isSingleElement());
115 EXPECT_TRUE(One.isSingleElement());
116 EXPECT_FALSE(Some.isSingleElement());
117 EXPECT_FALSE(Wrap.isSingleElement());
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000118}
Dan Gohmana3755d82009-07-09 22:07:27 +0000119
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000120TEST_F(ConstantRangeTest, GetSetSize) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000121 EXPECT_EQ(Full.getSetSize(), APInt(16, 0));
122 EXPECT_EQ(Empty.getSetSize(), APInt(16, 0));
123 EXPECT_EQ(One.getSetSize(), APInt(16, 1));
124 EXPECT_EQ(Some.getSetSize(), APInt(16, 0xaa0));
125 EXPECT_EQ(Wrap.getSetSize(), APInt(16, 0x10000 - 0xaa0));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000126}
Dan Gohmana3755d82009-07-09 22:07:27 +0000127
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000128TEST_F(ConstantRangeTest, GetMinsAndMaxes) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000129 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
Ryan Flynnb714c082009-07-22 16:17:36 +0000144 EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
Dan Gohmana3755d82009-07-09 22:07:27 +0000145 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa));
146 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa));
Ryan Flynnb714c082009-07-22 16:17:36 +0000147 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN));
Nick Lewycky780905e2009-07-13 04:50:21 +0000148
149 // Found by Klee
150 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(),
151 APInt(4, 7));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000152}
Dan Gohmana3755d82009-07-09 22:07:27 +0000153
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000154TEST_F(ConstantRangeTest, Trunc) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000155 ConstantRange TFull = Full.truncate(10);
156 ConstantRange TEmpty = Empty.truncate(10);
157 ConstantRange TOne = One.truncate(10);
158 ConstantRange TSome = Some.truncate(10);
159 ConstantRange TWrap = Wrap.truncate(10);
160 EXPECT_TRUE(TFull.isFullSet());
161 EXPECT_TRUE(TEmpty.isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000162 EXPECT_TRUE(TOne == ConstantRange(APInt(One.getLower()).trunc(10),
Dan Gohmana3755d82009-07-09 22:07:27 +0000163 APInt(One.getUpper()).trunc(10)));
Dan Gohmana3755d82009-07-09 22:07:27 +0000164 EXPECT_TRUE(TSome.isFullSet());
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000165}
Dan Gohmana3755d82009-07-09 22:07:27 +0000166
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000167TEST_F(ConstantRangeTest, ZExt) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000168 ConstantRange ZFull = Full.zeroExtend(20);
169 ConstantRange ZEmpty = Empty.zeroExtend(20);
170 ConstantRange ZOne = One.zeroExtend(20);
171 ConstantRange ZSome = Some.zeroExtend(20);
172 ConstantRange ZWrap = Wrap.zeroExtend(20);
Chris Lattner8142ce52009-08-23 06:32:25 +0000173 EXPECT_TRUE(ZFull == ConstantRange(APInt(20, 0), APInt(20, 0x10000)));
Dan Gohmana3755d82009-07-09 22:07:27 +0000174 EXPECT_TRUE(ZEmpty.isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000175 EXPECT_TRUE(ZOne == ConstantRange(APInt(One.getLower()).zext(20),
176 APInt(One.getUpper()).zext(20)));
177 EXPECT_TRUE(ZSome == ConstantRange(APInt(Some.getLower()).zext(20),
178 APInt(Some.getUpper()).zext(20)));
179 EXPECT_TRUE(ZWrap == ConstantRange(APInt(Wrap.getLower()).zext(20),
180 APInt(Wrap.getUpper()).zext(20)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000181}
Dan Gohmana3755d82009-07-09 22:07:27 +0000182
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000183TEST_F(ConstantRangeTest, SExt) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000184 ConstantRange SFull = Full.signExtend(20);
185 ConstantRange SEmpty = Empty.signExtend(20);
186 ConstantRange SOne = One.signExtend(20);
187 ConstantRange SSome = Some.signExtend(20);
188 ConstantRange SWrap = Wrap.signExtend(20);
Chris Lattner8142ce52009-08-23 06:32:25 +0000189 EXPECT_TRUE(SFull == ConstantRange(APInt(20, (uint64_t)INT16_MIN, true),
190 APInt(20, INT16_MAX + 1, true)));
Dan Gohmana3755d82009-07-09 22:07:27 +0000191 EXPECT_TRUE(SEmpty.isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000192 EXPECT_TRUE(SOne == ConstantRange(APInt(One.getLower()).sext(20),
193 APInt(One.getUpper()).sext(20)));
194 EXPECT_TRUE(SSome == ConstantRange(APInt(Some.getLower()).sext(20),
195 APInt(Some.getUpper()).sext(20)));
196 EXPECT_TRUE(SWrap == ConstantRange(APInt(Wrap.getLower()).sext(20),
197 APInt(Wrap.getUpper()).sext(20)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000198}
199
200TEST_F(ConstantRangeTest, IntersectWith) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000201 EXPECT_TRUE(Empty.intersectWith(Full).isEmptySet());
202 EXPECT_TRUE(Empty.intersectWith(Empty).isEmptySet());
203 EXPECT_TRUE(Empty.intersectWith(One).isEmptySet());
204 EXPECT_TRUE(Empty.intersectWith(Some).isEmptySet());
205 EXPECT_TRUE(Empty.intersectWith(Wrap).isEmptySet());
206 EXPECT_TRUE(Full.intersectWith(Full).isFullSet());
207 EXPECT_TRUE(Some.intersectWith(Some) == Some);
208 EXPECT_TRUE(Some.intersectWith(One) == One);
209 EXPECT_TRUE(Full.intersectWith(One) == One);
210 EXPECT_TRUE(Full.intersectWith(Some) == Some);
211 EXPECT_TRUE(Some.intersectWith(Wrap).isEmptySet());
212 EXPECT_TRUE(One.intersectWith(Wrap).isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000213 EXPECT_TRUE(One.intersectWith(Wrap) == Wrap.intersectWith(One));
Dan Gohmana3755d82009-07-09 22:07:27 +0000214
Nick Lewycky3a4a8842009-07-18 06:34:42 +0000215 // Klee generated testcase from PR4545.
216 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like
217 // 01..4.6789ABCDEF where the dots represent values not in the intersection.
218 ConstantRange LHS(APInt(16, 4), APInt(16, 2));
219 ConstantRange RHS(APInt(16, 6), APInt(16, 5));
Chris Lattner8142ce52009-08-23 06:32:25 +0000220 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000221}
Dan Gohmana3755d82009-07-09 22:07:27 +0000222
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000223TEST_F(ConstantRangeTest, UnionWith) {
Chris Lattner8142ce52009-08-23 06:32:25 +0000224 EXPECT_TRUE(Wrap.unionWith(One) ==
225 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb)));
226 EXPECT_TRUE(One.unionWith(Wrap) == Wrap.unionWith(One));
Dan Gohmana3755d82009-07-09 22:07:27 +0000227 EXPECT_TRUE(Empty.unionWith(Empty).isEmptySet());
228 EXPECT_TRUE(Full.unionWith(Full).isFullSet());
229 EXPECT_TRUE(Some.unionWith(Wrap).isFullSet());
Nick Lewycky7e7dc452009-07-19 03:44:35 +0000230
231 // PR4545
Chris Lattner8142ce52009-08-23 06:32:25 +0000232 EXPECT_TRUE(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith(
233 ConstantRange(APInt(16, 0), APInt(16, 8))) ==
234 ConstantRange(APInt(16, 14), APInt(16, 8)));
235 EXPECT_TRUE(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith(
236 ConstantRange(APInt(16, 4), APInt(16, 0))) ==
237 ConstantRange(16));
238 EXPECT_TRUE(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith(
239 ConstantRange(APInt(16, 2), APInt(16, 1))) ==
240 ConstantRange(16));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000241}
Dan Gohmana3755d82009-07-09 22:07:27 +0000242
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000243TEST_F(ConstantRangeTest, SubtractAPInt) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000244 EXPECT_TRUE(Full.subtract(APInt(16, 4)).isFullSet());
245 EXPECT_TRUE(Empty.subtract(APInt(16, 4)).isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000246 EXPECT_TRUE(Some.subtract(APInt(16, 4)) ==
247 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6)));
248 EXPECT_TRUE(Wrap.subtract(APInt(16, 4)) ==
249 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6)));
250 EXPECT_TRUE(One.subtract(APInt(16, 4)) ==
251 ConstantRange(APInt(16, 0x6)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000252}
Dan Gohmana3755d82009-07-09 22:07:27 +0000253
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000254TEST_F(ConstantRangeTest, Add) {
Dan Gohmana3755d82009-07-09 22:07:27 +0000255 EXPECT_TRUE(Full.add(APInt(16, 4)).isFullSet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000256 EXPECT_TRUE(Full.add(Full) == Full);
257 EXPECT_TRUE(Full.add(Empty) == Empty);
258 EXPECT_TRUE(Full.add(One) == Full);
259 EXPECT_TRUE(Full.add(Some) == Full);
260 EXPECT_TRUE(Full.add(Wrap) == Full);
261 EXPECT_TRUE(Empty.add(Empty) == Empty);
262 EXPECT_TRUE(Empty.add(One) == Empty);
263 EXPECT_TRUE(Empty.add(Some) == Empty);
264 EXPECT_TRUE(Empty.add(Wrap) == Empty);
Dan Gohmana3755d82009-07-09 22:07:27 +0000265 EXPECT_TRUE(Empty.add(APInt(16, 4)).isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000266 EXPECT_TRUE(Some.add(APInt(16, 4)) ==
267 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae)));
268 EXPECT_TRUE(Wrap.add(APInt(16, 4)) ==
269 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe)));
270 EXPECT_TRUE(One.add(APInt(16, 4)) ==
271 ConstantRange(APInt(16, 0xe)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000272}
Dan Gohmana3755d82009-07-09 22:07:27 +0000273
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000274TEST_F(ConstantRangeTest, Multiply) {
Chris Lattner8142ce52009-08-23 06:32:25 +0000275 EXPECT_TRUE(Full.multiply(Full) == Full);
276 EXPECT_TRUE(Full.multiply(Empty) == Empty);
277 EXPECT_TRUE(Full.multiply(One) == Full);
278 EXPECT_TRUE(Full.multiply(Some) == Full);
279 EXPECT_TRUE(Full.multiply(Wrap) == Full);
280 EXPECT_TRUE(Empty.multiply(Empty) == Empty);
281 EXPECT_TRUE(Empty.multiply(One) == Empty);
282 EXPECT_TRUE(Empty.multiply(Some) == Empty);
283 EXPECT_TRUE(Empty.multiply(Wrap) == Empty);
284 EXPECT_TRUE(One.multiply(One) == ConstantRange(APInt(16, 0xa*0xa),
285 APInt(16, 0xa*0xa + 1)));
286 EXPECT_TRUE(One.multiply(Some) == ConstantRange(APInt(16, 0xa*0xa),
287 APInt(16, 0xa*0xaa9 + 1)));
Nick Lewycky2ff893f2009-07-12 02:19:05 +0000288 EXPECT_TRUE(One.multiply(Wrap).isFullSet());
289 EXPECT_TRUE(Some.multiply(Some).isFullSet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000290 EXPECT_TRUE(Some.multiply(Wrap) == Full);
291 EXPECT_TRUE(Wrap.multiply(Wrap) == Full);
Nick Lewyckyf1db1202009-07-13 03:27:41 +0000292
293 // http://llvm.org/PR4545
Chris Lattner8142ce52009-08-23 06:32:25 +0000294 EXPECT_TRUE(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply(
295 ConstantRange(APInt(4, 6), APInt(4, 2))) ==
296 ConstantRange(4, /*isFullSet=*/true));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000297}
Dan Gohmana3755d82009-07-09 22:07:27 +0000298
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000299TEST_F(ConstantRangeTest, UMax) {
300 EXPECT_TRUE(Full.umax(Full).isFullSet());
301 EXPECT_TRUE(Full.umax(Empty).isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000302 EXPECT_TRUE(Full.umax(Some) == ConstantRange(APInt(16, 0xa), APInt(16, 0)));
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000303 EXPECT_TRUE(Full.umax(Wrap).isFullSet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000304 EXPECT_TRUE(Full.umax(Some) == ConstantRange(APInt(16, 0xa), APInt(16, 0)));
305 EXPECT_TRUE(Empty.umax(Empty) == Empty);
306 EXPECT_TRUE(Empty.umax(Some) == Empty);
307 EXPECT_TRUE(Empty.umax(Wrap) == Empty);
308 EXPECT_TRUE(Empty.umax(One) == Empty);
309 EXPECT_TRUE(Some.umax(Some) == Some);
310 EXPECT_TRUE(Some.umax(Wrap) == ConstantRange(APInt(16, 0xa), APInt(16, 0)));
311 EXPECT_TRUE(Some.umax(One) == Some);
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000312 // TODO: ConstantRange is currently over-conservative here.
Chris Lattner8142ce52009-08-23 06:32:25 +0000313 EXPECT_TRUE(Wrap.umax(Wrap) == Full);
314 EXPECT_TRUE(Wrap.umax(One) == ConstantRange(APInt(16, 0xa), APInt(16, 0)));
315 EXPECT_TRUE(One.umax(One) == One);
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000316}
317
318TEST_F(ConstantRangeTest, SMax) {
Dan Gohman38b06442009-07-09 23:16:10 +0000319 EXPECT_TRUE(Full.smax(Full).isFullSet());
320 EXPECT_TRUE(Full.smax(Empty).isEmptySet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000321 EXPECT_TRUE(Full.smax(Some) == ConstantRange(APInt(16, 0xa),
322 APInt::getSignedMinValue(16)));
Dan Gohman38b06442009-07-09 23:16:10 +0000323 EXPECT_TRUE(Full.smax(Wrap).isFullSet());
Chris Lattner8142ce52009-08-23 06:32:25 +0000324 EXPECT_TRUE(Full.smax(One) == ConstantRange(APInt(16, 0xa),
325 APInt::getSignedMinValue(16)));
326 EXPECT_TRUE(Empty.smax(Empty) == Empty);
327 EXPECT_TRUE(Empty.smax(Some) == Empty);
328 EXPECT_TRUE(Empty.smax(Wrap) == Empty);
329 EXPECT_TRUE(Empty.smax(One) == Empty);
330 EXPECT_TRUE(Some.smax(Some) == Some);
331 EXPECT_TRUE(Some.smax(Wrap) == ConstantRange(APInt(16, 0xa),
332 APInt(16, (uint64_t)INT16_MIN)));
333 EXPECT_TRUE(Some.smax(One) == Some);
334 EXPECT_TRUE(Wrap.smax(One) == ConstantRange(APInt(16, 0xa),
335 APInt(16, (uint64_t)INT16_MIN)));
336 EXPECT_TRUE(One.smax(One) == One);
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000337}
Dan Gohmana3755d82009-07-09 22:07:27 +0000338
Nick Lewycky44b3e8d2009-07-11 18:43:20 +0000339TEST_F(ConstantRangeTest, UDiv) {
Chris Lattner8142ce52009-08-23 06:32:25 +0000340 EXPECT_TRUE(Full.udiv(Full) == Full);
341 EXPECT_TRUE(Full.udiv(Empty) == Empty);
342 EXPECT_TRUE(Full.udiv(One) == ConstantRange(APInt(16, 0),
343 APInt(16, 0xffff / 0xa + 1)));
344 EXPECT_TRUE(Full.udiv(Some) == ConstantRange(APInt(16, 0),
345 APInt(16, 0xffff / 0xa + 1)));
346 EXPECT_TRUE(Full.udiv(Wrap) == Full);
347 EXPECT_TRUE(Empty.udiv(Empty) == Empty);
348 EXPECT_TRUE(Empty.udiv(One) == Empty);
349 EXPECT_TRUE(Empty.udiv(Some) == Empty);
350 EXPECT_TRUE(Empty.udiv(Wrap) == Empty);
351 EXPECT_TRUE(One.udiv(One) == ConstantRange(APInt(16, 1)));
352 EXPECT_TRUE(One.udiv(Some) == ConstantRange(APInt(16, 0), APInt(16, 2)));
353 EXPECT_TRUE(One.udiv(Wrap) == ConstantRange(APInt(16, 0), APInt(16, 0xb)));
354 EXPECT_TRUE(Some.udiv(Some) == ConstantRange(APInt(16, 0), APInt(16, 0x111)));
355 EXPECT_TRUE(Some.udiv(Wrap) == ConstantRange(APInt(16, 0), APInt(16, 0xaaa)));
356 EXPECT_TRUE(Wrap.udiv(Wrap) == Full);
Dan Gohmana3755d82009-07-09 22:07:27 +0000357}
358
359} // anonymous namespace