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_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 static void TestCode(const uint16_t* data) { 32 ArenaPool pool; 33 ArenaAllocator allocator(&pool); 34 HGraph* graph = CreateCFG(&allocator, data); 35 HBasicBlock* first_block = graph->GetEntryBlock()->GetSingleSuccessor(); 36 HBasicBlock* loop_header = first_block->GetSingleSuccessor(); 37 ASSERT_TRUE(loop_header->IsLoopHeader()); 38 ASSERT_EQ(loop_header->GetLoopInformation()->GetPreHeader(), first_block); 39 ASSERT_TRUE(loop_header->GetFirstInstruction()->IsSuspendCheck()); 40 } 41 42 class SuspendCheckTest : public CommonCompilerTest {}; 43 44 TEST_F(SuspendCheckTest, CFG1) { 45 const uint16_t data[] = ZERO_REGISTER_CODE_ITEM( 46 Instruction::NOP, 47 Instruction::GOTO | 0xFF00); 48 49 TestCode(data); 50 } 51 52 TEST_F(SuspendCheckTest, CFG2) { 53 const uint16_t data[] = ZERO_REGISTER_CODE_ITEM( 54 Instruction::GOTO_32, 0, 0); 55 56 TestCode(data); 57 } 58 59 TEST_F(SuspendCheckTest, CFG3) { 60 const uint16_t data[] = ONE_REGISTER_CODE_ITEM( 61 Instruction::CONST_4 | 0 | 0, 62 Instruction::IF_EQ, 0xFFFF, 63 Instruction::RETURN_VOID); 64 65 TestCode(data); 66 } 67 68 TEST_F(SuspendCheckTest, CFG4) { 69 const uint16_t data[] = ONE_REGISTER_CODE_ITEM( 70 Instruction::CONST_4 | 0 | 0, 71 Instruction::IF_NE, 0xFFFF, 72 Instruction::RETURN_VOID); 73 74 TestCode(data); 75 } 76 77 TEST_F(SuspendCheckTest, CFG5) { 78 const uint16_t data[] = ONE_REGISTER_CODE_ITEM( 79 Instruction::CONST_4 | 0 | 0, 80 Instruction::IF_EQZ, 0xFFFF, 81 Instruction::RETURN_VOID); 82 83 TestCode(data); 84 } 85 86 TEST_F(SuspendCheckTest, CFG6) { 87 const uint16_t data[] = ONE_REGISTER_CODE_ITEM( 88 Instruction::CONST_4 | 0 | 0, 89 Instruction::IF_NEZ, 0xFFFF, 90 Instruction::RETURN_VOID); 91 92 TestCode(data); 93 } 94 } // namespace art 95
