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/*
* 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 <fstream>
#include "base/arena_allocator.h"
#include "base/stringprintf.h"
#include "builder.h"
#include "code_generator.h"
#include "code_generator_x86.h"
#include "dex_file.h"
#include "dex_instruction.h"
#include "driver/compiler_options.h"
#include "graph_visualizer.h"
#include "nodes.h"
#include "optimizing_unit_test.h"
#include "pretty_printer.h"
#include "ssa_builder.h"
#include "ssa_liveness_analysis.h"
#include "gtest/gtest.h"
namespace art {
static void TestCode(const uint16_t* data, const int* expected_order, size_t number_of_blocks) {
ArenaPool pool;
ArenaAllocator allocator(&pool);
HGraph* graph = new (&allocator) HGraph(&allocator);
HGraphBuilder builder(graph);
const DexFile::CodeItem* item = reinterpret_cast<const DexFile::CodeItem*>(data);
bool graph_built = builder.BuildGraph(*item);
ASSERT_TRUE(graph_built);
graph->TryBuildingSsa();
x86::CodeGeneratorX86 codegen(graph, CompilerOptions());
SsaLivenessAnalysis liveness(*graph, &codegen);
liveness.Analyze();
ASSERT_EQ(liveness.GetLinearOrder().Size(), number_of_blocks);
for (size_t i = 0; i < number_of_blocks; ++i) {
ASSERT_EQ(liveness.GetLinearOrder().Get(i)->GetBlockId(), expected_order[i]);
}
}
TEST(LinearizeTest, CFG1) {
// Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2 ++++++
// / \ +
// Block5 Block7 +
// | | +
// Block6 Block3 +
// + / \ +
// Block4 Block8
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 5,
Instruction::IF_EQ, 0xFFFE,
Instruction::GOTO | 0xFE00,
Instruction::RETURN_VOID);
const int blocks[] = {0, 1, 2, 7, 3, 4, 8, 5, 6};
TestCode(data, blocks, 9);
}
TEST(LinearizeTest, CFG2) {
// Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2 ++++++
// / \ +
// Block3 Block7 +
// | | +
// Block6 Block4 +
// + / \ +
// Block5 Block8
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3,
Instruction::RETURN_VOID,
Instruction::IF_EQ, 0xFFFD,
Instruction::GOTO | 0xFE00);
const int blocks[] = {0, 1, 2, 7, 4, 5, 8, 3, 6};
TestCode(data, blocks, 9);
}
TEST(LinearizeTest, CFG3) {
// Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2 ++++++
// / \ +
// Block3 Block8 +
// | | +
// Block7 Block5 +
// / + \ +
// Block6 + Block9
// | +
// Block4 ++
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 4,
Instruction::RETURN_VOID,
Instruction::GOTO | 0x0100,
Instruction::IF_EQ, 0xFFFC,
Instruction::GOTO | 0xFD00);
const int blocks[] = {0, 1, 2, 8, 5, 6, 4, 9, 3, 7};
TestCode(data, blocks, 10);
}
TEST(LinearizeTest, CFG4) {
/* Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2
// / + \
// Block6 + Block8
// | + |
// Block7 + Block3 +++++++
// + / \ +
// Block9 Block10 +
// | +
// Block4 +
// + / \ +
// Block5 Block11
*/
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 7,
Instruction::IF_EQ, 0xFFFE,
Instruction::IF_EQ, 0xFFFE,
Instruction::GOTO | 0xFE00,
Instruction::RETURN_VOID);
const int blocks[] = {0, 1, 2, 8, 3, 10, 4, 5, 11, 9, 6, 7};
TestCode(data, blocks, 12);
}
TEST(LinearizeTest, CFG5) {
/* Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2
// / + \
// Block3 + Block8
// | + |
// Block7 + Block4 +++++++
// + / \ +
// Block9 Block10 +
// | +
// Block5 +
// +/ \ +
// Block6 Block11
*/
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::IF_EQ, 3,
Instruction::RETURN_VOID,
Instruction::IF_EQ, 0xFFFD,
Instruction::IF_EQ, 0xFFFE,
Instruction::GOTO | 0xFE00);
const int blocks[] = {0, 1, 2, 8, 4, 10, 5, 6, 11, 9, 3, 7};
TestCode(data, blocks, 12);
}
TEST(LinearizeTest, CFG6) {
// Block0
// |
// Block1
// |
// Block2 ++++++++++++++
// | +
// Block3 +
// / \ +
// Block8 Block4 +
// | / \ +
// Block5 <- Block9 Block6 +
// |
// Block7
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::GOTO | 0x0100,
Instruction::IF_EQ, 0x0004,
Instruction::IF_EQ, 0x0003,
Instruction::RETURN_VOID,
Instruction::GOTO | 0xFA00);
const int blocks[] = {0, 1, 2, 3, 4, 6, 9, 8, 5, 7};
TestCode(data, blocks, arraysize(blocks));
}
TEST(LinearizeTest, CFG7) {
// Structure of this graph (+ are back edges)
// Block0
// |
// Block1
// |
// Block2 ++++++++
// | +
// Block3 +
// / \ +
// Block4 Block8 +
// / \ | +
// Block5 Block9 - Block6 +
// |
// Block7
//
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
Instruction::CONST_4 | 0 | 0,
Instruction::GOTO | 0x0100,
Instruction::IF_EQ, 0x0005,
Instruction::IF_EQ, 0x0003,
Instruction::RETURN_VOID,
Instruction::GOTO | 0xFA00);
const int blocks[] = {0, 1, 2, 3, 4, 9, 8, 6, 5, 7};
TestCode(data, blocks, arraysize(blocks));
}
} // namespace art
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