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 "locations.h" 18 19 #include "nodes.h" 20 #include "code_generator.h" 21 22 namespace art { 23 24 LocationSummary::LocationSummary(HInstruction* instruction, 25 CallKind call_kind, 26 bool intrinsified) 27 : inputs_(instruction->InputCount(), 28 instruction->GetBlock()->GetGraph()->GetArena()->Adapter(kArenaAllocLocationSummary)), 29 temps_(instruction->GetBlock()->GetGraph()->GetArena()->Adapter(kArenaAllocLocationSummary)), 30 output_overlaps_(Location::kOutputOverlap), 31 call_kind_(call_kind), 32 stack_mask_(nullptr), 33 register_mask_(0), 34 live_registers_(), 35 intrinsified_(intrinsified) { 36 instruction->SetLocations(this); 37 38 if (NeedsSafepoint()) { 39 ArenaAllocator* arena = instruction->GetBlock()->GetGraph()->GetArena(); 40 stack_mask_ = ArenaBitVector::Create(arena, 0, true, kArenaAllocLocationSummary); 41 } 42 } 43 44 45 Location Location::RegisterOrConstant(HInstruction* instruction) { 46 return instruction->IsConstant() 47 ? Location::ConstantLocation(instruction->AsConstant()) 48 : Location::RequiresRegister(); 49 } 50 51 Location Location::RegisterOrInt32Constant(HInstruction* instruction) { 52 HConstant* constant = instruction->AsConstant(); 53 if (constant != nullptr) { 54 int64_t value = CodeGenerator::GetInt64ValueOf(constant); 55 if (IsInt<32>(value)) { 56 return Location::ConstantLocation(constant); 57 } 58 } 59 return Location::RequiresRegister(); 60 } 61 62 Location Location::FpuRegisterOrInt32Constant(HInstruction* instruction) { 63 HConstant* constant = instruction->AsConstant(); 64 if (constant != nullptr) { 65 int64_t value = CodeGenerator::GetInt64ValueOf(constant); 66 if (IsInt<32>(value)) { 67 return Location::ConstantLocation(constant); 68 } 69 } 70 return Location::RequiresFpuRegister(); 71 } 72 73 Location Location::ByteRegisterOrConstant(int reg, HInstruction* instruction) { 74 return instruction->IsConstant() 75 ? Location::ConstantLocation(instruction->AsConstant()) 76 : Location::RegisterLocation(reg); 77 } 78 79 Location Location::FpuRegisterOrConstant(HInstruction* instruction) { 80 return instruction->IsConstant() 81 ? Location::ConstantLocation(instruction->AsConstant()) 82 : Location::RequiresFpuRegister(); 83 } 84 85 std::ostream& operator<<(std::ostream& os, const Location& location) { 86 os << location.DebugString(); 87 if (location.IsRegister() || location.IsFpuRegister()) { 88 os << location.reg(); 89 } else if (location.IsPair()) { 90 os << location.low() << ":" << location.high(); 91 } else if (location.IsStackSlot() || location.IsDoubleStackSlot()) { 92 os << location.GetStackIndex(); 93 } 94 return os; 95 } 96 97 } // namespace art 98