/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "builder.h"
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#include "dex/dex_instruction.h"
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#include "nodes.h"
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#include "optimizing_unit_test.h"
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#include "pretty_printer.h"
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#include "gtest/gtest.h"
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namespace art {
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/**
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* Check that the HGraphBuilder adds suspend checks to backward branches.
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*/
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class SuspendCheckTest : public OptimizingUnitTest {
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protected:
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void TestCode(const std::vector<uint16_t>& data);
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};
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void SuspendCheckTest::TestCode(const std::vector<uint16_t>& data) {
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HGraph* graph = CreateCFG(data);
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HBasicBlock* first_block = graph->GetEntryBlock()->GetSingleSuccessor();
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HBasicBlock* loop_header = first_block->GetSingleSuccessor();
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ASSERT_TRUE(loop_header->IsLoopHeader());
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ASSERT_EQ(loop_header->GetLoopInformation()->GetPreHeader(), first_block);
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ASSERT_TRUE(loop_header->GetFirstInstruction()->IsSuspendCheck());
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}
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TEST_F(SuspendCheckTest, CFG1) {
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const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
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Instruction::NOP,
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Instruction::GOTO | 0xFF00);
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TestCode(data);
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}
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TEST_F(SuspendCheckTest, CFG2) {
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const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM(
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Instruction::GOTO_32, 0, 0);
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TestCode(data);
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}
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TEST_F(SuspendCheckTest, CFG3) {
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const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
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Instruction::CONST_4 | 0 | 0,
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Instruction::IF_EQ, 0xFFFF,
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Instruction::RETURN_VOID);
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TestCode(data);
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}
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TEST_F(SuspendCheckTest, CFG4) {
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const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
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Instruction::CONST_4 | 0 | 0,
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Instruction::IF_NE, 0xFFFF,
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Instruction::RETURN_VOID);
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TestCode(data);
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}
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TEST_F(SuspendCheckTest, CFG5) {
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const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
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Instruction::CONST_4 | 0 | 0,
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Instruction::IF_EQZ, 0xFFFF,
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Instruction::RETURN_VOID);
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TestCode(data);
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}
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TEST_F(SuspendCheckTest, CFG6) {
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const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM(
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Instruction::CONST_4 | 0 | 0,
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Instruction::IF_NEZ, 0xFFFF,
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Instruction::RETURN_VOID);
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TestCode(data);
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}
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} // namespace art
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