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 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_COMPILER_OPTIMIZING_OPTIMIZING_UNIT_TEST_H_
#define ART_COMPILER_OPTIMIZING_OPTIMIZING_UNIT_TEST_H_
#include <memory>
#include <vector>
#include "base/malloc_arena_pool.h"
#include "base/scoped_arena_allocator.h"
#include "builder.h"
#include "common_compiler_test.h"
#include "dex/code_item_accessors-inl.h"
#include "dex/dex_file.h"
#include "dex/dex_instruction.h"
#include "dex/standard_dex_file.h"
#include "driver/dex_compilation_unit.h"
#include "graph_checker.h"
#include "handle_scope-inl.h"
#include "mirror/class_loader.h"
#include "mirror/dex_cache.h"
#include "nodes.h"
#include "scoped_thread_state_change.h"
#include "ssa_builder.h"
#include "ssa_liveness_analysis.h"
#include "gtest/gtest.h"
namespace art {
#define NUM_INSTRUCTIONS(...) \
(sizeof((uint16_t[]) {__VA_ARGS__}) /sizeof(uint16_t))
#define N_REGISTERS_CODE_ITEM(NUM_REGS, ...) \
{ NUM_REGS, 0, 0, 0, 0, 0, NUM_INSTRUCTIONS(__VA_ARGS__), 0, __VA_ARGS__ }
#define ZERO_REGISTER_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(0, __VA_ARGS__)
#define ONE_REGISTER_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(1, __VA_ARGS__)
#define TWO_REGISTERS_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(2, __VA_ARGS__)
#define THREE_REGISTERS_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(3, __VA_ARGS__)
#define FOUR_REGISTERS_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(4, __VA_ARGS__)
#define FIVE_REGISTERS_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(5, __VA_ARGS__)
#define SIX_REGISTERS_CODE_ITEM(...) N_REGISTERS_CODE_ITEM(6, __VA_ARGS__)
LiveInterval* BuildInterval(const size_t ranges[][2],
size_t number_of_ranges,
ScopedArenaAllocator* allocator,
int reg = -1,
HInstruction* defined_by = nullptr) {
LiveInterval* interval =
LiveInterval::MakeInterval(allocator, DataType::Type::kInt32, defined_by);
if (defined_by != nullptr) {
defined_by->SetLiveInterval(interval);
}
for (size_t i = number_of_ranges; i > 0; --i) {
interval->AddRange(ranges[i - 1][0], ranges[i - 1][1]);
}
interval->SetRegister(reg);
return interval;
}
void RemoveSuspendChecks(HGraph* graph) {
for (HBasicBlock* block : graph->GetBlocks()) {
if (block != nullptr) {
if (block->GetLoopInformation() != nullptr) {
block->GetLoopInformation()->SetSuspendCheck(nullptr);
}
for (HInstructionIterator it(block->GetInstructions()); !it.Done(); it.Advance()) {
HInstruction* current = it.Current();
if (current->IsSuspendCheck()) {
current->GetBlock()->RemoveInstruction(current);
}
}
}
}
}
class ArenaPoolAndAllocator {
public:
ArenaPoolAndAllocator()
: pool_(), allocator_(&pool_), arena_stack_(&pool_), scoped_allocator_(&arena_stack_) { }
ArenaAllocator* GetAllocator() { return &allocator_; }
ArenaStack* GetArenaStack() { return &arena_stack_; }
ScopedArenaAllocator* GetScopedAllocator() { return &scoped_allocator_; }
private:
MallocArenaPool pool_;
ArenaAllocator allocator_;
ArenaStack arena_stack_;
ScopedArenaAllocator scoped_allocator_;
};
// Have a separate helper so the OptimizingCFITest can inherit it without causing
// multiple inheritance errors from having two gtest as a parent twice.
class OptimizingUnitTestHelper {
public:
OptimizingUnitTestHelper() : pool_and_allocator_(new ArenaPoolAndAllocator()) { }
ArenaAllocator* GetAllocator() { return pool_and_allocator_->GetAllocator(); }
ArenaStack* GetArenaStack() { return pool_and_allocator_->GetArenaStack(); }
ScopedArenaAllocator* GetScopedAllocator() { return pool_and_allocator_->GetScopedAllocator(); }
void ResetPoolAndAllocator() {
pool_and_allocator_.reset(new ArenaPoolAndAllocator());
handles_.reset(); // When getting rid of the old HGraph, we can also reset handles_.
}
HGraph* CreateGraph() {
ArenaAllocator* const allocator = pool_and_allocator_->GetAllocator();
// Reserve a big array of 0s so the dex file constructor can offsets from the header.
static constexpr size_t kDexDataSize = 4 * KB;
const uint8_t* dex_data = reinterpret_cast<uint8_t*>(allocator->Alloc(kDexDataSize));
// Create the dex file based on the fake data. Call the constructor so that we can use virtual
// functions. Don't use the arena for the StandardDexFile otherwise the dex location leaks.
dex_files_.emplace_back(new StandardDexFile(
dex_data,
sizeof(StandardDexFile::Header),
"no_location",
/*location_checksum*/ 0,
/*oat_dex_file*/ nullptr,
/*container*/ nullptr));
return new (allocator) HGraph(
allocator,
pool_and_allocator_->GetArenaStack(),
*dex_files_.back(),
/*method_idx*/-1,
kRuntimeISA);
}
// Create a control-flow graph from Dex instructions.
HGraph* CreateCFG(const std::vector<uint16_t>& data,
DataType::Type return_type = DataType::Type::kInt32) {
HGraph* graph = CreateGraph();
// The code item data might not aligned to 4 bytes, copy it to ensure that.
const size_t code_item_size = data.size() * sizeof(data.front());
void* aligned_data = GetAllocator()->Alloc(code_item_size);
memcpy(aligned_data, &data[0], code_item_size);
CHECK_ALIGNED(aligned_data, StandardDexFile::CodeItem::kAlignment);
const dex::CodeItem* code_item = reinterpret_cast<const dex::CodeItem*>(aligned_data);
{
ScopedObjectAccess soa(Thread::Current());
if (handles_ == nullptr) {
handles_.reset(new VariableSizedHandleScope(soa.Self()));
}
const DexCompilationUnit* dex_compilation_unit =
new (graph->GetAllocator()) DexCompilationUnit(
handles_->NewHandle<mirror::ClassLoader>(nullptr),
/* class_linker= */ nullptr,
graph->GetDexFile(),
code_item,
/* class_def_index= */ DexFile::kDexNoIndex16,
/* method_idx= */ dex::kDexNoIndex,
/* access_flags= */ 0u,
/* verified_method= */ nullptr,
handles_->NewHandle<mirror::DexCache>(nullptr));
CodeItemDebugInfoAccessor accessor(graph->GetDexFile(), code_item, /*dex_method_idx*/ 0u);
HGraphBuilder builder(graph, dex_compilation_unit, accessor, handles_.get(), return_type);
bool graph_built = (builder.BuildGraph() == kAnalysisSuccess);
return graph_built ? graph : nullptr;
}
}
// Run GraphChecker with all checks.
//
// Return: the status whether the run is successful.
bool CheckGraph(HGraph* graph) {
return CheckGraph(graph, /*check_ref_type_info=*/true);
}
// Run GraphChecker with all checks except reference type information checks.
//
// Return: the status whether the run is successful.
bool CheckGraphSkipRefTypeInfoChecks(HGraph* graph) {
return CheckGraph(graph, /*check_ref_type_info=*/false);
}
private:
bool CheckGraph(HGraph* graph, bool check_ref_type_info) {
GraphChecker checker(graph);
checker.SetRefTypeInfoCheckEnabled(check_ref_type_info);
checker.Run();
checker.Dump(std::cerr);
return checker.IsValid();
}
std::vector<std::unique_ptr<const StandardDexFile>> dex_files_;
std::unique_ptr<ArenaPoolAndAllocator> pool_and_allocator_;
std::unique_ptr<VariableSizedHandleScope> handles_;
};
class OptimizingUnitTest : public CommonCompilerTest, public OptimizingUnitTestHelper {};
// OptimizingUnitTest with some handy functions to ease the graph creation.
class ImprovedOptimizingUnitTest : public OptimizingUnitTest {
public:
ImprovedOptimizingUnitTest() : graph_(CreateGraph()),
entry_block_(nullptr),
return_block_(nullptr),
exit_block_(nullptr) {}
virtual ~ImprovedOptimizingUnitTest() {}
void InitGraph() {
entry_block_ = new (GetAllocator()) HBasicBlock(graph_);
graph_->AddBlock(entry_block_);
graph_->SetEntryBlock(entry_block_);
return_block_ = new (GetAllocator()) HBasicBlock(graph_);
graph_->AddBlock(return_block_);
exit_block_ = new (GetAllocator()) HBasicBlock(graph_);
graph_->AddBlock(exit_block_);
graph_->SetExitBlock(exit_block_);
entry_block_->AddSuccessor(return_block_);
return_block_->AddSuccessor(exit_block_);
CreateParameters();
for (HInstruction* parameter : parameters_) {
entry_block_->AddInstruction(parameter);
}
return_block_->AddInstruction(new (GetAllocator()) HReturnVoid());
exit_block_->AddInstruction(new (GetAllocator()) HExit());
}
bool CheckGraph() {
return OptimizingUnitTestHelper::CheckGraph(graph_);
}
bool CheckGraphSkipRefTypeInfoChecks() {
return OptimizingUnitTestHelper::CheckGraphSkipRefTypeInfoChecks(graph_);
}
HEnvironment* ManuallyBuildEnvFor(HInstruction* instruction,
ArenaVector<HInstruction*>* current_locals) {
HEnvironment* environment = new (GetAllocator()) HEnvironment(
(GetAllocator()),
current_locals->size(),
graph_->GetArtMethod(),
instruction->GetDexPc(),
instruction);
environment->CopyFrom(ArrayRef<HInstruction* const>(*current_locals));
instruction->SetRawEnvironment(environment);
return environment;
}
protected:
// Create parameters to be added to the graph entry block.
// Subclasses can override it to create parameters they need.
virtual void CreateParameters() { /* do nothing */ }
HGraph* graph_;
HBasicBlock* entry_block_;
HBasicBlock* return_block_;
HBasicBlock* exit_block_;
std::vector<HInstruction*> parameters_;
};
// Naive string diff data type.
typedef std::list<std::pair<std::string, std::string>> diff_t;
// An alias for the empty string used to make it clear that a line is
// removed in a diff.
static const std::string removed = ""; // NOLINT [runtime/string] [4]
// Naive patch command: apply a diff to a string.
inline std::string Patch(const std::string& original, const diff_t& diff) {
std::string result = original;
for (const auto& p : diff) {
std::string::size_type pos = result.find(p.first);
DCHECK_NE(pos, std::string::npos)
<< "Could not find: \"" << p.first << "\" in \"" << result << "\"";
result.replace(pos, p.first.size(), p.second);
}
return result;
}
// Returns if the instruction is removed from the graph.
inline bool IsRemoved(HInstruction* instruction) {
return instruction->GetBlock() == nullptr;
}
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_OPTIMIZING_UNIT_TEST_H_
|