1 //===-- Unittests for BlockStore ------------------------------------------===//
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 "src/__support/blockstore.h"
10 #include "test/UnitTest/Test.h"
11
12 struct Element {
13 int a;
14 long b;
15 unsigned c;
16 };
17
18 class LlvmLibcBlockStoreTest : public LIBC_NAMESPACE::testing::Test {
19 public:
20 template <size_t BLOCK_SIZE, size_t ELEMENT_COUNT, bool REVERSE>
populate_and_iterate()21 void populate_and_iterate() {
22 LIBC_NAMESPACE::BlockStore<Element, BLOCK_SIZE, REVERSE> block_store;
23 for (int i = 0; i < int(ELEMENT_COUNT); ++i)
24 ASSERT_TRUE(block_store.push_back({i, 2 * i, 3 * unsigned(i)}));
25 auto end = block_store.end();
26 int i = 0;
27 for (auto iter = block_store.begin(); iter != end; ++iter, ++i) {
28 Element &e = *iter;
29 if (REVERSE) {
30 int j = ELEMENT_COUNT - 1 - i;
31 ASSERT_EQ(e.a, j);
32 ASSERT_EQ(e.b, long(j * 2));
33 ASSERT_EQ(e.c, unsigned(j * 3));
34 } else {
35 ASSERT_EQ(e.a, i);
36 ASSERT_EQ(e.b, long(i * 2));
37 ASSERT_EQ(e.c, unsigned(i * 3));
38 }
39 }
40 ASSERT_EQ(i, int(ELEMENT_COUNT));
41 LIBC_NAMESPACE::BlockStore<Element, BLOCK_SIZE, REVERSE>::destroy(
42 &block_store);
43 }
44
back_test()45 template <bool REVERSE> void back_test() {
46 using LIBC_NAMESPACE::BlockStore;
47 BlockStore<int, 4, REVERSE> block_store;
48 for (int i = 0; i < 20; i++)
49 ASSERT_TRUE(block_store.push_back(i));
50 for (int i = 19; i >= 0; i--, block_store.pop_back())
51 ASSERT_EQ(block_store.back(), i);
52 block_store.destroy(&block_store);
53 }
54
empty_test()55 template <bool REVERSE> void empty_test() {
56 using LIBC_NAMESPACE::BlockStore;
57 BlockStore<int, 2, REVERSE> block_store;
58
59 ASSERT_TRUE(block_store.empty());
60 ASSERT_TRUE(block_store.push_back(1));
61 for (int i = 0; i < 10; i++) {
62 ASSERT_FALSE(block_store.empty());
63 ASSERT_TRUE(block_store.push_back(1));
64 }
65 block_store.destroy(&block_store);
66 }
67 };
68
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterate4)69 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterate4) {
70 populate_and_iterate<4, 4, false>();
71 }
72
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterate8)73 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterate8) {
74 populate_and_iterate<4, 8, false>();
75 }
76
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterate10)77 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterate10) {
78 populate_and_iterate<4, 10, false>();
79 }
80
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterateReverse4)81 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterateReverse4) {
82 populate_and_iterate<4, 4, true>();
83 }
84
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterateReverse8)85 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterateReverse8) {
86 populate_and_iterate<4, 8, true>();
87 }
88
TEST_F(LlvmLibcBlockStoreTest,PopulateAndIterateReverse10)89 TEST_F(LlvmLibcBlockStoreTest, PopulateAndIterateReverse10) {
90 populate_and_iterate<4, 10, true>();
91 }
92
TEST_F(LlvmLibcBlockStoreTest,Back)93 TEST_F(LlvmLibcBlockStoreTest, Back) { back_test<false>(); }
94
95 // FIXME: Combing this test with the above test makes the AMDGPU backend
96 // generate code which hangs. This should be fixed in the clang compiler.
TEST_F(LlvmLibcBlockStoreTest,BackReverse)97 TEST_F(LlvmLibcBlockStoreTest, BackReverse) { back_test<true>(); }
98
TEST_F(LlvmLibcBlockStoreTest,Empty)99 TEST_F(LlvmLibcBlockStoreTest, Empty) {
100 empty_test<false>();
101 empty_test<true>();
102 }
103