1//===- unittests/Analysis/FlowSensitive/ValueTest.cpp ---===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "clang/Analysis/FlowSensitive/Value.h"
10#include "clang/Analysis/FlowSensitive/Arena.h"
11#include "clang/Analysis/FlowSensitive/StorageLocation.h"
12#include "gmock/gmock.h"
13#include "gtest/gtest.h"
14#include <memory>
15
16namespace {
17
18using namespace clang;
19using namespace dataflow;
20
21TEST(ValueTest, EquivalenceReflexive) {
22 IntegerValue V;
23 EXPECT_TRUE(areEquivalentValues(V, V));
24}
25
26TEST(ValueTest, DifferentIntegerValuesNotEquivalent) {
27 IntegerValue V1;
28 IntegerValue V2;
29 EXPECT_FALSE(areEquivalentValues(V1, V2));
30}
31
32TEST(ValueTest, AliasedPointersEquivalent) {
33 auto L = ScalarStorageLocation(QualType());
34 PointerValue V1(L);
35 PointerValue V2(L);
36 EXPECT_TRUE(areEquivalentValues(V1, V2));
37 EXPECT_TRUE(areEquivalentValues(V2, V1));
38}
39
40TEST(ValueTest, TopsEquivalent) {
41 Arena A;
42 TopBoolValue V1(A.makeAtomRef(A: Atom(0)));
43 TopBoolValue V2(A.makeAtomRef(A: Atom(1)));
44 EXPECT_TRUE(areEquivalentValues(V1, V2));
45 EXPECT_TRUE(areEquivalentValues(V2, V1));
46}
47
48// The framework does not (currently) consider equivalence for values with
49// properties, leaving such to individual analyses.
50TEST(ValueTest, ValuesWithSamePropsDifferent) {
51 Arena A;
52 TopBoolValue Prop(A.makeAtomRef(A: Atom(0)));
53 TopBoolValue V1(A.makeAtomRef(A: Atom(2)));
54 TopBoolValue V2(A.makeAtomRef(A: Atom(3)));
55 V1.setProperty(Name: "foo", Val&: Prop);
56 V2.setProperty(Name: "foo", Val&: Prop);
57 EXPECT_FALSE(areEquivalentValues(V1, V2));
58 EXPECT_FALSE(areEquivalentValues(V2, V1));
59}
60
61TEST(ValueTest, ValuesWithDifferentPropsDifferent) {
62 Arena A;
63 TopBoolValue Prop1(A.makeAtomRef(A: Atom(0)));
64 TopBoolValue Prop2(A.makeAtomRef(A: Atom(1)));
65 TopBoolValue V1(A.makeAtomRef(A: Atom(2)));
66 TopBoolValue V2(A.makeAtomRef(A: Atom(3)));
67 V1.setProperty(Name: "foo", Val&: Prop1);
68 V2.setProperty(Name: "bar", Val&: Prop2);
69 EXPECT_FALSE(areEquivalentValues(V1, V2));
70 EXPECT_FALSE(areEquivalentValues(V2, V1));
71}
72
73TEST(ValueTest, ValuesWithDifferentNumberPropsDifferent) {
74 Arena A;
75 TopBoolValue Prop(A.makeAtomRef(A: Atom(0)));
76 TopBoolValue V1(A.makeAtomRef(A: Atom(2)));
77 TopBoolValue V2(A.makeAtomRef(A: Atom(3)));
78 // Only set a property on `V1`.
79 V1.setProperty(Name: "foo", Val&: Prop);
80 EXPECT_FALSE(areEquivalentValues(V1, V2));
81 EXPECT_FALSE(areEquivalentValues(V2, V1));
82}
83
84TEST(ValueTest, DifferentKindsNotEquivalent) {
85 Arena A;
86 auto L = ScalarStorageLocation(QualType());
87 PointerValue V1(L);
88 TopBoolValue V2(A.makeAtomRef(A: Atom(0)));
89 EXPECT_FALSE(areEquivalentValues(V1, V2));
90 EXPECT_FALSE(areEquivalentValues(V2, V1));
91}
92
93TEST(ValueTest, NotAliasedPointersNotEquivalent) {
94 auto L1 = ScalarStorageLocation(QualType());
95 PointerValue V1(L1);
96 auto L2 = ScalarStorageLocation(QualType());
97 PointerValue V2(L2);
98 EXPECT_FALSE(areEquivalentValues(V1, V2));
99 EXPECT_FALSE(areEquivalentValues(V2, V1));
100}
101
102} // namespace
103

source code of clang/unittests/Analysis/FlowSensitive/ValueTest.cpp