1//===- llvm/unittest/ADT/PointerEmbeddedIntTest.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 "llvm/ADT/PointerEmbeddedInt.h"
10#include "gtest/gtest.h"
11using namespace llvm;
12
13namespace {
14
15TEST(PointerEmbeddedIntTest, Basic) {
16 PointerEmbeddedInt<int, CHAR_BIT> I = 42, J = 43;
17
18 EXPECT_EQ(42, I);
19 EXPECT_EQ(43, I + 1);
20 EXPECT_EQ((int)sizeof(uintptr_t) * CHAR_BIT - CHAR_BIT,
21 (int)PointerLikeTypeTraits<decltype(I)>::NumLowBitsAvailable);
22
23 EXPECT_FALSE(I == J);
24 EXPECT_TRUE(I != J);
25 EXPECT_TRUE(I < J);
26 EXPECT_FALSE(I > J);
27 EXPECT_TRUE(I <= J);
28 EXPECT_FALSE(I >= J);
29
30 EXPECT_FALSE(I == 43);
31 EXPECT_TRUE(I != 43);
32 EXPECT_TRUE(I < 43);
33 EXPECT_FALSE(I > 43);
34 EXPECT_TRUE(I <= 43);
35 EXPECT_FALSE(I >= 43);
36
37 EXPECT_FALSE(42 == J);
38 EXPECT_TRUE(42 != J);
39 EXPECT_TRUE(42 < J);
40 EXPECT_FALSE(42 > J);
41 EXPECT_TRUE(42 <= J);
42 EXPECT_FALSE(42 >= J);
43}
44
45TEST(PointerEmbeddedIntTest, intptr_t) {
46 PointerEmbeddedInt<intptr_t, CHAR_BIT> IPos = 42, INeg = -42;
47 EXPECT_EQ(42, IPos);
48 EXPECT_EQ(-42, INeg);
49
50 PointerEmbeddedInt<uintptr_t, CHAR_BIT> U = 42, USaturated = 255;
51 EXPECT_EQ(42U, U);
52 EXPECT_EQ(255U, USaturated);
53
54 PointerEmbeddedInt<intptr_t, std::numeric_limits<intptr_t>::digits>
55 IMax = std::numeric_limits<intptr_t>::max() >> 1,
56 IMin = std::numeric_limits<intptr_t>::min() >> 1;
57 EXPECT_EQ(std::numeric_limits<intptr_t>::max() >> 1, IMax);
58 EXPECT_EQ(std::numeric_limits<intptr_t>::min() >> 1, IMin);
59
60 PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
61 UMax = std::numeric_limits<uintptr_t>::max() >> 1,
62 UMin = std::numeric_limits<uintptr_t>::min() >> 1;
63 EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, UMax);
64 EXPECT_EQ(std::numeric_limits<uintptr_t>::min() >> 1, UMin);
65}
66
67TEST(PointerEmbeddedIntTest, PointerLikeTypeTraits) {
68 PointerEmbeddedInt<int, CHAR_BIT> I = 42;
69 using ITraits = PointerLikeTypeTraits<decltype(I)>;
70 EXPECT_EQ(42, ITraits::getFromVoidPointer(ITraits::getAsVoidPointer(I)));
71
72 PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
73 Max = std::numeric_limits<uintptr_t>::max() >> 1;
74 using MaxTraits = PointerLikeTypeTraits<decltype(Max)>;
75 EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1,
76 MaxTraits::getFromVoidPointer(MaxTraits::getAsVoidPointer(Max)));
77}
78
79} // end anonymous namespace
80

source code of llvm/unittests/ADT/PointerEmbeddedIntTest.cpp