1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include "compiled_method_storage.h"
20#include "compiled_method.h"
21#include "compiler_driver.h"
22#include "compiler_options.h"
23#include "dex/verification_results.h"
24
25namespace art {
26
27TEST(CompiledMethodStorage, Deduplicate) {
28  CompilerOptions compiler_options;
29  VerificationResults verification_results(&compiler_options);
30  CompilerDriver driver(&compiler_options,
31                        &verification_results,
32                        Compiler::kOptimizing,
33                        /* instruction_set_ */ kNone,
34                        /* instruction_set_features */ nullptr,
35                        /* image_classes */ nullptr,
36                        /* compiled_classes */ nullptr,
37                        /* compiled_methods */ nullptr,
38                        /* thread_count */ 1u,
39                        /* dump_stats */ false,
40                        /* dump_passes */ false,
41                        /* timer */ nullptr,
42                        /* swap_fd */ -1,
43                        /* profile_compilation_info */ nullptr);
44  CompiledMethodStorage* storage = driver.GetCompiledMethodStorage();
45
46  ASSERT_TRUE(storage->DedupeEnabled());  // The default.
47
48  const uint8_t raw_code1[] = { 1u, 2u, 3u };
49  const uint8_t raw_code2[] = { 4u, 3u, 2u, 1u };
50  ArrayRef<const uint8_t> code[] = {
51      ArrayRef<const uint8_t>(raw_code1),
52      ArrayRef<const uint8_t>(raw_code2),
53  };
54  const uint8_t raw_method_info_map1[] = { 1u, 2u, 3u, 4u, 5u, 6u };
55  const uint8_t raw_method_info_map2[] = { 8u, 7u, 6u, 5u, 4u, 3u, 2u, 1u };
56  ArrayRef<const uint8_t> method_info[] = {
57      ArrayRef<const uint8_t>(raw_method_info_map1),
58      ArrayRef<const uint8_t>(raw_method_info_map2),
59  };
60  const uint8_t raw_vmap_table1[] = { 2, 4, 6 };
61  const uint8_t raw_vmap_table2[] = { 7, 5, 3, 1 };
62  ArrayRef<const uint8_t> vmap_table[] = {
63      ArrayRef<const uint8_t>(raw_vmap_table1),
64      ArrayRef<const uint8_t>(raw_vmap_table2),
65  };
66  const uint8_t raw_cfi_info1[] = { 1, 3, 5 };
67  const uint8_t raw_cfi_info2[] = { 8, 6, 4, 2 };
68  ArrayRef<const uint8_t> cfi_info[] = {
69      ArrayRef<const uint8_t>(raw_cfi_info1),
70      ArrayRef<const uint8_t>(raw_cfi_info2),
71  };
72  const LinkerPatch raw_patches1[] = {
73      LinkerPatch::CodePatch(0u, nullptr, 1u),
74      LinkerPatch::MethodPatch(4u, nullptr, 1u),
75  };
76  const LinkerPatch raw_patches2[] = {
77      LinkerPatch::CodePatch(0u, nullptr, 1u),
78      LinkerPatch::MethodPatch(4u, nullptr, 2u),
79  };
80  ArrayRef<const LinkerPatch> patches[] = {
81      ArrayRef<const LinkerPatch>(raw_patches1),
82      ArrayRef<const LinkerPatch>(raw_patches2),
83  };
84
85  std::vector<CompiledMethod*> compiled_methods;
86  compiled_methods.reserve(1u << 7);
87  for (auto&& c : code) {
88    for (auto&& s : method_info) {
89      for (auto&& v : vmap_table) {
90        for (auto&& f : cfi_info) {
91          for (auto&& p : patches) {
92            compiled_methods.push_back(CompiledMethod::SwapAllocCompiledMethod(
93                &driver, kNone, c, 0u, 0u, 0u, s, v, f, p));
94          }
95        }
96      }
97    }
98  }
99  constexpr size_t code_bit = 1u << 4;
100  constexpr size_t src_map_bit = 1u << 3;
101  constexpr size_t vmap_table_bit = 1u << 2;
102  constexpr size_t cfi_info_bit = 1u << 1;
103  constexpr size_t patches_bit = 1u << 0;
104  CHECK_EQ(compiled_methods.size(), 1u << 5);
105  for (size_t i = 0; i != compiled_methods.size(); ++i) {
106    for (size_t j = 0; j != compiled_methods.size(); ++j) {
107      CompiledMethod* lhs = compiled_methods[i];
108      CompiledMethod* rhs = compiled_methods[j];
109      bool same_code = ((i ^ j) & code_bit) == 0u;
110      bool same_src_map = ((i ^ j) & src_map_bit) == 0u;
111      bool same_vmap_table = ((i ^ j) & vmap_table_bit) == 0u;
112      bool same_cfi_info = ((i ^ j) & cfi_info_bit) == 0u;
113      bool same_patches = ((i ^ j) & patches_bit) == 0u;
114      ASSERT_EQ(same_code, lhs->GetQuickCode().data() == rhs->GetQuickCode().data())
115          << i << " " << j;
116      ASSERT_EQ(same_src_map, lhs->GetMethodInfo().data() == rhs->GetMethodInfo().data())
117          << i << " " << j;
118      ASSERT_EQ(same_vmap_table, lhs->GetVmapTable().data() == rhs->GetVmapTable().data())
119          << i << " " << j;
120      ASSERT_EQ(same_cfi_info, lhs->GetCFIInfo().data() == rhs->GetCFIInfo().data())
121          << i << " " << j;
122      ASSERT_EQ(same_patches, lhs->GetPatches().data() == rhs->GetPatches().data())
123          << i << " " << j;
124    }
125  }
126  for (CompiledMethod* method : compiled_methods) {
127    CompiledMethod::ReleaseSwapAllocatedCompiledMethod(&driver, method);
128  }
129}
130
131}  // namespace art
132