1 /* 2 * Copyright (C) 2014 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 "builder.h" 18 #include "dex/dex_instruction.h" 19 #include "nodes.h" 20 #include "optimizing_unit_test.h" 21 #include "pretty_printer.h" 22 23 #include "gtest/gtest.h" 24 25 namespace art { 26 27 /** 28 * Check that the HGraphBuilder adds suspend checks to backward branches. 29 */ 30 31 class SuspendCheckTest : public OptimizingUnitTest { 32 protected: 33 void TestCode(const std::vector<uint16_t>& data); 34 }; 35 36 void SuspendCheckTest::TestCode(const std::vector<uint16_t>& data) { 37 HGraph* graph = CreateCFG(data); 38 HBasicBlock* first_block = graph->GetEntryBlock()->GetSingleSuccessor(); 39 HBasicBlock* loop_header = first_block->GetSingleSuccessor(); 40 ASSERT_TRUE(loop_header->IsLoopHeader()); 41 ASSERT_EQ(loop_header->GetLoopInformation()->GetPreHeader(), first_block); 42 ASSERT_TRUE(loop_header->GetFirstInstruction()->IsSuspendCheck()); 43 } 44 45 TEST_F(SuspendCheckTest, CFG1) { 46 const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM( 47 Instruction::NOP, 48 Instruction::GOTO | 0xFF00); 49 50 TestCode(data); 51 } 52 53 TEST_F(SuspendCheckTest, CFG2) { 54 const std::vector<uint16_t> data = ZERO_REGISTER_CODE_ITEM( 55 Instruction::GOTO_32, 0, 0); 56 57 TestCode(data); 58 } 59 60 TEST_F(SuspendCheckTest, CFG3) { 61 const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM( 62 Instruction::CONST_4 | 0 | 0, 63 Instruction::IF_EQ, 0xFFFF, 64 Instruction::RETURN_VOID); 65 66 TestCode(data); 67 } 68 69 TEST_F(SuspendCheckTest, CFG4) { 70 const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM( 71 Instruction::CONST_4 | 0 | 0, 72 Instruction::IF_NE, 0xFFFF, 73 Instruction::RETURN_VOID); 74 75 TestCode(data); 76 } 77 78 TEST_F(SuspendCheckTest, CFG5) { 79 const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM( 80 Instruction::CONST_4 | 0 | 0, 81 Instruction::IF_EQZ, 0xFFFF, 82 Instruction::RETURN_VOID); 83 84 TestCode(data); 85 } 86 87 TEST_F(SuspendCheckTest, CFG6) { 88 const std::vector<uint16_t> data = ONE_REGISTER_CODE_ITEM( 89 Instruction::CONST_4 | 0 | 0, 90 Instruction::IF_NEZ, 0xFFFF, 91 Instruction::RETURN_VOID); 92 93 TestCode(data); 94 } 95 } // namespace art 96
