PointerEmbeddedIntTest.cpp
2.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
//===- llvm/unittest/ADT/PointerEmbeddedIntTest.cpp -----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/PointerEmbeddedInt.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(PointerEmbeddedIntTest, Basic) {
PointerEmbeddedInt<int, CHAR_BIT> I = 42, J = 43;
EXPECT_EQ(42, I);
EXPECT_EQ(43, I + 1);
EXPECT_EQ((int)sizeof(uintptr_t) * CHAR_BIT - CHAR_BIT,
(int)PointerLikeTypeTraits<decltype(I)>::NumLowBitsAvailable);
EXPECT_FALSE(I == J);
EXPECT_TRUE(I != J);
EXPECT_TRUE(I < J);
EXPECT_FALSE(I > J);
EXPECT_TRUE(I <= J);
EXPECT_FALSE(I >= J);
EXPECT_FALSE(I == 43);
EXPECT_TRUE(I != 43);
EXPECT_TRUE(I < 43);
EXPECT_FALSE(I > 43);
EXPECT_TRUE(I <= 43);
EXPECT_FALSE(I >= 43);
EXPECT_FALSE(42 == J);
EXPECT_TRUE(42 != J);
EXPECT_TRUE(42 < J);
EXPECT_FALSE(42 > J);
EXPECT_TRUE(42 <= J);
EXPECT_FALSE(42 >= J);
}
TEST(PointerEmbeddedIntTest, intptr_t) {
PointerEmbeddedInt<intptr_t, CHAR_BIT> IPos = 42, INeg = -42;
EXPECT_EQ(42, IPos);
EXPECT_EQ(-42, INeg);
PointerEmbeddedInt<uintptr_t, CHAR_BIT> U = 42, USaturated = 255;
EXPECT_EQ(42U, U);
EXPECT_EQ(255U, USaturated);
PointerEmbeddedInt<intptr_t, std::numeric_limits<intptr_t>::digits>
IMax = std::numeric_limits<intptr_t>::max() >> 1,
IMin = std::numeric_limits<intptr_t>::min() >> 1;
EXPECT_EQ(std::numeric_limits<intptr_t>::max() >> 1, IMax);
EXPECT_EQ(std::numeric_limits<intptr_t>::min() >> 1, IMin);
PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
UMax = std::numeric_limits<uintptr_t>::max() >> 1,
UMin = std::numeric_limits<uintptr_t>::min() >> 1;
EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, UMax);
EXPECT_EQ(std::numeric_limits<uintptr_t>::min() >> 1, UMin);
}
TEST(PointerEmbeddedIntTest, PointerLikeTypeTraits) {
PointerEmbeddedInt<int, CHAR_BIT> I = 42;
using ITraits = PointerLikeTypeTraits<decltype(I)>;
EXPECT_EQ(42, ITraits::getFromVoidPointer(ITraits::getAsVoidPointer(I)));
PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
Max = std::numeric_limits<uintptr_t>::max() >> 1;
using MaxTraits = PointerLikeTypeTraits<decltype(Max)>;
EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1,
MaxTraits::getFromVoidPointer(MaxTraits::getAsVoidPointer(Max)));
}
} // end anonymous namespace