1 //===----------------------------------------------------------------------===//
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 #ifndef POINTER_COMPARISON_TEST_HELPER_H
9 #define POINTER_COMPARISON_TEST_HELPER_H
10
11 #include <cstdint>
12 #include <cassert>
13
14 #include "test_macros.h"
15
16 template <template <class> class CompareTemplate>
do_pointer_comparison_test()17 void do_pointer_comparison_test() {
18 typedef CompareTemplate<int*> Compare;
19 typedef CompareTemplate<std::uintptr_t> UIntCompare;
20 #if TEST_STD_VER > 11
21 typedef CompareTemplate<void> VoidCompare;
22 #else
23 typedef Compare VoidCompare;
24 #endif
25
26 Compare comp;
27 UIntCompare ucomp;
28 VoidCompare vcomp;
29 struct {
30 int a, b;
31 } local;
32 int* pointers[] = {&local.a, &local.b, nullptr, &local.a + 1};
33 for (int* lhs : pointers) {
34 for (int* rhs : pointers) {
35 std::uintptr_t lhs_uint = reinterpret_cast<std::uintptr_t>(lhs);
36 std::uintptr_t rhs_uint = reinterpret_cast<std::uintptr_t>(rhs);
37 assert(comp(lhs, rhs) == ucomp(lhs_uint, rhs_uint));
38 assert(vcomp(lhs, rhs) == ucomp(lhs_uint, rhs_uint));
39 }
40 }
41 }
42
43 template <class Comp>
do_pointer_comparison_test(Comp comp)44 void do_pointer_comparison_test(Comp comp) {
45 struct {
46 int a, b;
47 } local;
48 int* pointers[] = {&local.a, &local.b, nullptr, &local.a + 1};
49 for (int* lhs : pointers) {
50 for (int* rhs : pointers) {
51 std::uintptr_t lhs_uint = reinterpret_cast<std::uintptr_t>(lhs);
52 std::uintptr_t rhs_uint = reinterpret_cast<std::uintptr_t>(rhs);
53 void* lhs_void = static_cast<void*>(lhs);
54 void* rhs_void = static_cast<void*>(rhs);
55 assert(comp(lhs, rhs) == comp(lhs_uint, rhs_uint));
56 assert(comp(lhs_void, rhs_void) == comp(lhs_uint, rhs_uint));
57 }
58 }
59 }
60
61 #endif // POINTER_COMPARISON_TEST_HELPER_H
62