/*
* 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.
*/
#include "base/arena_allocator.h"
#include "builder.h"
#include "dex/dex_instruction.h"
#include "nodes.h"
#include "optimizing_unit_test.h"
#include "gtest/gtest.h"
namespace art {
class OptimizerTest : public OptimizingUnitTest {
protected:
void TestCode(const std::vector<uint16_t>& data, const uint32_t* blocks, size_t blocks_length);
};
void OptimizerTest::TestCode(const std::vector<uint16_t>& data,
const uint32_t* blocks,
size_t blocks_length) {
HGraph* graph = CreateCFG(data);
ASSERT_EQ(graph->GetBlocks().size(), blocks_length);
for (size_t i = 0, e = blocks_length; i < e; ++i) {
if (blocks[i] == kInvalidBlockId) {
if (graph->GetBlocks()[i] == nullptr) {
// Dead block.
} else {
// Only the entry block has no dominator.
ASSERT_EQ(nullptr, graph->GetBlocks()[i]->GetDominator());
ASSERT_TRUE(graph->GetBlocks()[i]->IsEntryBlock());
}
} else {
ASSERT_NE(nullptr, graph->GetBlocks()[i]->GetDominator());
ASSERT_EQ(blocks[i], graph->GetBlocks()[i]->GetDominator()->GetBlockId());
}
}
}
TEST_F(OptimizerTest, ReturnVoid) {
const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
Instruction::RETURN_VOID); // Block number 1
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG1) {
const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO | 0x100, // Block number 1
Instruction::RETURN_VOID); // Block number 2
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
2
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG2) {
const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO | 0x100, // Block number 1
Instruction::GOTO | 0x100, // Block number 2
Instruction::RETURN_VOID); // Block number 3
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
2,
3
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG3) {
const std::vector<uint16_t> data1 = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO | 0x200, // Block number 1
Instruction::RETURN_VOID, // Block number 2
Instruction::GOTO | 0xFF00); // Block number 3
const uint32_t dominators[] = {
kInvalidBlockId,
0,
3,
1,
2
};
TestCode(data1, dominators, sizeof(dominators) / sizeof(int));
const std::vector<uint16_t> data2 = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO_16, 3,
Instruction::RETURN_VOID,
Instruction::GOTO_16, 0xFFFF);
TestCode(data2, dominators, sizeof(dominators) / sizeof(int));
const std::vector<uint16_t> data3 = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO_32, 4, 0,
Instruction::RETURN_VOID,
Instruction::GOTO_32, 0xFFFF, 0xFFFF);
TestCode(data3, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG4) {
const std::vector<uint16_t> data1 = ZERO_REGISTER_CODE_ITEM(
Instruction::NOP,
Instruction::GOTO | 0xFF00);
const uint32_t dominators[] = {
kInvalidBlockId,
3,
kInvalidBlockId,
0
};
TestCode(data1, dominators, sizeof(dominators) / sizeof(int));
const std::vector<uint16_t> data2 = ZERO_REGISTER_CODE_ITEM(
Instruction::GOTO_32, 0, 0);
TestCode(data2, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG5) {
const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
Instruction::RETURN_VOID, // Block number 1
Instruction::GOTO | 0x100, // Dead block
Instruction::GOTO | 0xFE00); // Block number 2
const uint32_t dominators[] = {
kInvalidBlockId,
0,
kInvalidBlockId,
1
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG6) {
const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3,
Instruction::GOTO | 0x100,
Instruction::RETURN_VOID);
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
1,
3,
1, // Synthesized block to avoid critical edge.
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG7) {
const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3, // Block number 1
Instruction::GOTO | 0x100, // Block number 2
Instruction::GOTO | 0xFF00); // Block number 3
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
1,
kInvalidBlockId, // exit block is not dominated by any block due to the spin loop.
1, // block to avoid critical edge.
1 // block to avoid critical edge.
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG8) {
const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3, // Block number 1
Instruction::GOTO | 0x200, // Block number 2
Instruction::GOTO | 0x100, // Block number 3
Instruction::GOTO | 0xFF00); // Block number 4
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
1,
1,
kInvalidBlockId, // exit block is not dominated by any block due to the spin loop.
1 // block to avoid critical edge.
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG9) {
const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3, // Block number 1
Instruction::GOTO | 0x200, // Block number 2
Instruction::GOTO | 0x100, // Block number 3
Instruction::GOTO | 0xFE00); // Block number 4
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
1,
1,
kInvalidBlockId, // exit block is not dominated by any block due to the spin loop.
1 // block to avoid critical edge.
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
TEST_F(OptimizerTest, CFG10) {
const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 6, // Block number 1
Instruction::IF_EQ, 3, // Block number 2
Instruction::GOTO | 0x100, // Block number 3
Instruction::GOTO | 0x100, // Block number 4
Instruction::RETURN_VOID); // Block number 5
const uint32_t dominators[] = {
kInvalidBlockId,
0,
1,
2,
2,
1,
5, // Block number 5 dominates exit block
1, // block to avoid critical edge.
2 // block to avoid critical edge.
};
TestCode(data, dominators, sizeof(dominators) / sizeof(int));
}
} // namespace art