Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 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 "code_generator.h" |
| 18 | |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 19 | #ifdef ART_ENABLE_CODEGEN_arm |
Scott Wakeling | fe88546 | 2016-09-22 10:24:38 +0100 | [diff] [blame] | 20 | #include "code_generator_arm_vixl.h" |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 21 | #endif |
| 22 | |
| 23 | #ifdef ART_ENABLE_CODEGEN_arm64 |
Alexandre Rames | 5319def | 2014-10-23 10:03:10 +0100 | [diff] [blame] | 24 | #include "code_generator_arm64.h" |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 25 | #endif |
| 26 | |
| 27 | #ifdef ART_ENABLE_CODEGEN_x86 |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 28 | #include "code_generator_x86.h" |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 29 | #endif |
| 30 | |
| 31 | #ifdef ART_ENABLE_CODEGEN_x86_64 |
Nicolas Geoffray | 9cf3552 | 2014-06-09 18:40:10 +0100 | [diff] [blame] | 32 | #include "code_generator_x86_64.h" |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 33 | #endif |
| 34 | |
Vladimir Marko | 86c8752 | 2020-05-11 16:55:55 +0100 | [diff] [blame] | 35 | #include "art_method-inl.h" |
Andreas Gampe | 5678db5 | 2017-06-08 14:11:18 -0700 | [diff] [blame] | 36 | #include "base/bit_utils.h" |
| 37 | #include "base/bit_utils_iterator.h" |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 38 | #include "base/casts.h" |
David Sehr | 67bf42e | 2018-02-26 16:43:04 -0800 | [diff] [blame] | 39 | #include "base/leb128.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 40 | #include "class_linker.h" |
Yevgeny Rouban | e3ea838 | 2014-08-08 16:29:38 +0700 | [diff] [blame] | 41 | #include "compiled_method.h" |
David Sehr | 312f3b2 | 2018-03-19 08:39:26 -0700 | [diff] [blame] | 42 | #include "dex/bytecode_utils.h" |
David Sehr | 9e734c7 | 2018-01-04 17:56:19 -0800 | [diff] [blame] | 43 | #include "dex/code_item_accessors-inl.h" |
Nicolas Geoffray | 92cf83e | 2014-03-18 17:59:20 +0000 | [diff] [blame] | 44 | #include "dex/verified_method.h" |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 45 | #include "graph_visualizer.h" |
Vladimir Marko | e47f60c | 2018-02-21 13:43:28 +0000 | [diff] [blame] | 46 | #include "image.h" |
| 47 | #include "gc/space/image_space.h" |
Andreas Gampe | c15a2f4 | 2017-04-21 12:09:39 -0700 | [diff] [blame] | 48 | #include "intern_table.h" |
Nicolas Geoffray | 5bd05a5 | 2015-10-13 09:48:30 +0100 | [diff] [blame] | 49 | #include "intrinsics.h" |
Nicolas Geoffray | 19a19cf | 2014-10-22 16:07:05 +0100 | [diff] [blame] | 50 | #include "mirror/array-inl.h" |
| 51 | #include "mirror/object_array-inl.h" |
| 52 | #include "mirror/object_reference.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 53 | #include "mirror/reference.h" |
Vladimir Marko | dce016e | 2016-04-28 13:10:02 +0100 | [diff] [blame] | 54 | #include "mirror/string.h" |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 55 | #include "parallel_move_resolver.h" |
Andreas Gampe | c6ea7d0 | 2017-02-01 16:46:28 -0800 | [diff] [blame] | 56 | #include "scoped_thread_state_change-inl.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 57 | #include "ssa_liveness_analysis.h" |
David Srbecky | 71ec1cc | 2018-05-18 15:57:25 +0100 | [diff] [blame] | 58 | #include "stack_map.h" |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 59 | #include "stack_map_stream.h" |
Vladimir Marko | 552a134 | 2017-10-31 10:56:47 +0000 | [diff] [blame] | 60 | #include "string_builder_append.h" |
Andreas Gampe | b486a98 | 2017-06-01 13:45:54 -0700 | [diff] [blame] | 61 | #include "thread-current-inl.h" |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 62 | #include "utils/assembler.h" |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 63 | |
Vladimir Marko | 0a51605 | 2019-10-14 13:00:44 +0000 | [diff] [blame] | 64 | namespace art { |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 65 | |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 66 | // Return whether a location is consistent with a type. |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 67 | static bool CheckType(DataType::Type type, Location location) { |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 68 | if (location.IsFpuRegister() |
| 69 | || (location.IsUnallocated() && (location.GetPolicy() == Location::kRequiresFpuRegister))) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 70 | return (type == DataType::Type::kFloat32) || (type == DataType::Type::kFloat64); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 71 | } else if (location.IsRegister() || |
| 72 | (location.IsUnallocated() && (location.GetPolicy() == Location::kRequiresRegister))) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 73 | return DataType::IsIntegralType(type) || (type == DataType::Type::kReference); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 74 | } else if (location.IsRegisterPair()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 75 | return type == DataType::Type::kInt64; |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 76 | } else if (location.IsFpuRegisterPair()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 77 | return type == DataType::Type::kFloat64; |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 78 | } else if (location.IsStackSlot()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 79 | return (DataType::IsIntegralType(type) && type != DataType::Type::kInt64) |
| 80 | || (type == DataType::Type::kFloat32) |
| 81 | || (type == DataType::Type::kReference); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 82 | } else if (location.IsDoubleStackSlot()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 83 | return (type == DataType::Type::kInt64) || (type == DataType::Type::kFloat64); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 84 | } else if (location.IsConstant()) { |
| 85 | if (location.GetConstant()->IsIntConstant()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 86 | return DataType::IsIntegralType(type) && (type != DataType::Type::kInt64); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 87 | } else if (location.GetConstant()->IsNullConstant()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 88 | return type == DataType::Type::kReference; |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 89 | } else if (location.GetConstant()->IsLongConstant()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 90 | return type == DataType::Type::kInt64; |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 91 | } else if (location.GetConstant()->IsFloatConstant()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 92 | return type == DataType::Type::kFloat32; |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 93 | } else { |
| 94 | return location.GetConstant()->IsDoubleConstant() |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 95 | && (type == DataType::Type::kFloat64); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 96 | } |
| 97 | } else { |
| 98 | return location.IsInvalid() || (location.GetPolicy() == Location::kAny); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | // Check that a location summary is consistent with an instruction. |
| 103 | static bool CheckTypeConsistency(HInstruction* instruction) { |
| 104 | LocationSummary* locations = instruction->GetLocations(); |
| 105 | if (locations == nullptr) { |
| 106 | return true; |
| 107 | } |
| 108 | |
| 109 | if (locations->Out().IsUnallocated() |
| 110 | && (locations->Out().GetPolicy() == Location::kSameAsFirstInput)) { |
| 111 | DCHECK(CheckType(instruction->GetType(), locations->InAt(0))) |
| 112 | << instruction->GetType() |
| 113 | << " " << locations->InAt(0); |
| 114 | } else { |
| 115 | DCHECK(CheckType(instruction->GetType(), locations->Out())) |
| 116 | << instruction->GetType() |
| 117 | << " " << locations->Out(); |
| 118 | } |
| 119 | |
Vladimir Marko | e900491 | 2016-06-16 16:50:52 +0100 | [diff] [blame] | 120 | HConstInputsRef inputs = instruction->GetInputs(); |
Vladimir Marko | 372f10e | 2016-05-17 16:30:10 +0100 | [diff] [blame] | 121 | for (size_t i = 0; i < inputs.size(); ++i) { |
| 122 | DCHECK(CheckType(inputs[i]->GetType(), locations->InAt(i))) |
| 123 | << inputs[i]->GetType() << " " << locations->InAt(i); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | HEnvironment* environment = instruction->GetEnvironment(); |
| 127 | for (size_t i = 0; i < instruction->EnvironmentSize(); ++i) { |
| 128 | if (environment->GetInstructionAt(i) != nullptr) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 129 | DataType::Type type = environment->GetInstructionAt(i)->GetType(); |
Nicolas Geoffray | 0a23d74 | 2015-05-07 11:57:35 +0100 | [diff] [blame] | 130 | DCHECK(CheckType(type, environment->GetLocationAt(i))) |
| 131 | << type << " " << environment->GetLocationAt(i); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 132 | } else { |
Nicolas Geoffray | 0a23d74 | 2015-05-07 11:57:35 +0100 | [diff] [blame] | 133 | DCHECK(environment->GetLocationAt(i).IsInvalid()) |
| 134 | << environment->GetLocationAt(i); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 135 | } |
| 136 | } |
| 137 | return true; |
| 138 | } |
| 139 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 140 | class CodeGenerator::CodeGenerationData : public DeletableArenaObject<kArenaAllocCodeGenerator> { |
| 141 | public: |
| 142 | static std::unique_ptr<CodeGenerationData> Create(ArenaStack* arena_stack, |
| 143 | InstructionSet instruction_set) { |
| 144 | ScopedArenaAllocator allocator(arena_stack); |
| 145 | void* memory = allocator.Alloc<CodeGenerationData>(kArenaAllocCodeGenerator); |
| 146 | return std::unique_ptr<CodeGenerationData>( |
| 147 | ::new (memory) CodeGenerationData(std::move(allocator), instruction_set)); |
| 148 | } |
| 149 | |
| 150 | ScopedArenaAllocator* GetScopedAllocator() { |
| 151 | return &allocator_; |
| 152 | } |
| 153 | |
| 154 | void AddSlowPath(SlowPathCode* slow_path) { |
| 155 | slow_paths_.emplace_back(std::unique_ptr<SlowPathCode>(slow_path)); |
| 156 | } |
| 157 | |
| 158 | ArrayRef<const std::unique_ptr<SlowPathCode>> GetSlowPaths() const { |
| 159 | return ArrayRef<const std::unique_ptr<SlowPathCode>>(slow_paths_); |
| 160 | } |
| 161 | |
| 162 | StackMapStream* GetStackMapStream() { return &stack_map_stream_; } |
| 163 | |
| 164 | void ReserveJitStringRoot(StringReference string_reference, Handle<mirror::String> string) { |
| 165 | jit_string_roots_.Overwrite(string_reference, |
| 166 | reinterpret_cast64<uint64_t>(string.GetReference())); |
| 167 | } |
| 168 | |
| 169 | uint64_t GetJitStringRootIndex(StringReference string_reference) const { |
| 170 | return jit_string_roots_.Get(string_reference); |
| 171 | } |
| 172 | |
| 173 | size_t GetNumberOfJitStringRoots() const { |
| 174 | return jit_string_roots_.size(); |
| 175 | } |
| 176 | |
| 177 | void ReserveJitClassRoot(TypeReference type_reference, Handle<mirror::Class> klass) { |
| 178 | jit_class_roots_.Overwrite(type_reference, reinterpret_cast64<uint64_t>(klass.GetReference())); |
| 179 | } |
| 180 | |
| 181 | uint64_t GetJitClassRootIndex(TypeReference type_reference) const { |
| 182 | return jit_class_roots_.Get(type_reference); |
| 183 | } |
| 184 | |
| 185 | size_t GetNumberOfJitClassRoots() const { |
| 186 | return jit_class_roots_.size(); |
| 187 | } |
| 188 | |
| 189 | size_t GetNumberOfJitRoots() const { |
| 190 | return GetNumberOfJitStringRoots() + GetNumberOfJitClassRoots(); |
| 191 | } |
| 192 | |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 193 | void EmitJitRoots(/*out*/std::vector<Handle<mirror::Object>>* roots) |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 194 | REQUIRES_SHARED(Locks::mutator_lock_); |
| 195 | |
| 196 | private: |
| 197 | CodeGenerationData(ScopedArenaAllocator&& allocator, InstructionSet instruction_set) |
| 198 | : allocator_(std::move(allocator)), |
| 199 | stack_map_stream_(&allocator_, instruction_set), |
| 200 | slow_paths_(allocator_.Adapter(kArenaAllocCodeGenerator)), |
| 201 | jit_string_roots_(StringReferenceValueComparator(), |
| 202 | allocator_.Adapter(kArenaAllocCodeGenerator)), |
| 203 | jit_class_roots_(TypeReferenceValueComparator(), |
| 204 | allocator_.Adapter(kArenaAllocCodeGenerator)) { |
| 205 | slow_paths_.reserve(kDefaultSlowPathsCapacity); |
| 206 | } |
| 207 | |
| 208 | static constexpr size_t kDefaultSlowPathsCapacity = 8; |
| 209 | |
| 210 | ScopedArenaAllocator allocator_; |
| 211 | StackMapStream stack_map_stream_; |
| 212 | ScopedArenaVector<std::unique_ptr<SlowPathCode>> slow_paths_; |
| 213 | |
| 214 | // Maps a StringReference (dex_file, string_index) to the index in the literal table. |
| 215 | // Entries are intially added with a pointer in the handle zone, and `EmitJitRoots` |
| 216 | // will compute all the indices. |
| 217 | ScopedArenaSafeMap<StringReference, uint64_t, StringReferenceValueComparator> jit_string_roots_; |
| 218 | |
| 219 | // Maps a ClassReference (dex_file, type_index) to the index in the literal table. |
| 220 | // Entries are intially added with a pointer in the handle zone, and `EmitJitRoots` |
| 221 | // will compute all the indices. |
| 222 | ScopedArenaSafeMap<TypeReference, uint64_t, TypeReferenceValueComparator> jit_class_roots_; |
| 223 | }; |
| 224 | |
| 225 | void CodeGenerator::CodeGenerationData::EmitJitRoots( |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 226 | /*out*/std::vector<Handle<mirror::Object>>* roots) { |
| 227 | DCHECK(roots->empty()); |
| 228 | roots->reserve(GetNumberOfJitRoots()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 229 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 230 | size_t index = 0; |
| 231 | for (auto& entry : jit_string_roots_) { |
| 232 | // Update the `roots` with the string, and replace the address temporarily |
| 233 | // stored to the index in the table. |
| 234 | uint64_t address = entry.second; |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 235 | roots->emplace_back(reinterpret_cast<StackReference<mirror::Object>*>(address)); |
| 236 | DCHECK(roots->back() != nullptr); |
| 237 | DCHECK(roots->back()->IsString()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 238 | entry.second = index; |
| 239 | // Ensure the string is strongly interned. This is a requirement on how the JIT |
| 240 | // handles strings. b/32995596 |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 241 | class_linker->GetInternTable()->InternStrong(roots->back()->AsString()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 242 | ++index; |
| 243 | } |
| 244 | for (auto& entry : jit_class_roots_) { |
| 245 | // Update the `roots` with the class, and replace the address temporarily |
| 246 | // stored to the index in the table. |
| 247 | uint64_t address = entry.second; |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 248 | roots->emplace_back(reinterpret_cast<StackReference<mirror::Object>*>(address)); |
| 249 | DCHECK(roots->back() != nullptr); |
| 250 | DCHECK(roots->back()->IsClass()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 251 | entry.second = index; |
| 252 | ++index; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | ScopedArenaAllocator* CodeGenerator::GetScopedAllocator() { |
| 257 | DCHECK(code_generation_data_ != nullptr); |
| 258 | return code_generation_data_->GetScopedAllocator(); |
| 259 | } |
| 260 | |
| 261 | StackMapStream* CodeGenerator::GetStackMapStream() { |
| 262 | DCHECK(code_generation_data_ != nullptr); |
| 263 | return code_generation_data_->GetStackMapStream(); |
| 264 | } |
| 265 | |
| 266 | void CodeGenerator::ReserveJitStringRoot(StringReference string_reference, |
| 267 | Handle<mirror::String> string) { |
| 268 | DCHECK(code_generation_data_ != nullptr); |
| 269 | code_generation_data_->ReserveJitStringRoot(string_reference, string); |
| 270 | } |
| 271 | |
| 272 | uint64_t CodeGenerator::GetJitStringRootIndex(StringReference string_reference) { |
| 273 | DCHECK(code_generation_data_ != nullptr); |
| 274 | return code_generation_data_->GetJitStringRootIndex(string_reference); |
| 275 | } |
| 276 | |
| 277 | void CodeGenerator::ReserveJitClassRoot(TypeReference type_reference, Handle<mirror::Class> klass) { |
| 278 | DCHECK(code_generation_data_ != nullptr); |
| 279 | code_generation_data_->ReserveJitClassRoot(type_reference, klass); |
| 280 | } |
| 281 | |
| 282 | uint64_t CodeGenerator::GetJitClassRootIndex(TypeReference type_reference) { |
| 283 | DCHECK(code_generation_data_ != nullptr); |
| 284 | return code_generation_data_->GetJitClassRootIndex(type_reference); |
| 285 | } |
| 286 | |
| 287 | void CodeGenerator::EmitJitRootPatches(uint8_t* code ATTRIBUTE_UNUSED, |
| 288 | const uint8_t* roots_data ATTRIBUTE_UNUSED) { |
| 289 | DCHECK(code_generation_data_ != nullptr); |
| 290 | DCHECK_EQ(code_generation_data_->GetNumberOfJitStringRoots(), 0u); |
| 291 | DCHECK_EQ(code_generation_data_->GetNumberOfJitClassRoots(), 0u); |
| 292 | } |
| 293 | |
Vladimir Marko | dce016e | 2016-04-28 13:10:02 +0100 | [diff] [blame] | 294 | uint32_t CodeGenerator::GetArrayLengthOffset(HArrayLength* array_length) { |
| 295 | return array_length->IsStringLength() |
| 296 | ? mirror::String::CountOffset().Uint32Value() |
| 297 | : mirror::Array::LengthOffset().Uint32Value(); |
| 298 | } |
| 299 | |
Vladimir Marko | 87f3fcb | 2016-04-28 15:52:11 +0100 | [diff] [blame] | 300 | uint32_t CodeGenerator::GetArrayDataOffset(HArrayGet* array_get) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 301 | DCHECK(array_get->GetType() == DataType::Type::kUint16 || !array_get->IsStringCharAt()); |
Vladimir Marko | 87f3fcb | 2016-04-28 15:52:11 +0100 | [diff] [blame] | 302 | return array_get->IsStringCharAt() |
| 303 | ? mirror::String::ValueOffset().Uint32Value() |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 304 | : mirror::Array::DataOffset(DataType::Size(array_get->GetType())).Uint32Value(); |
Vladimir Marko | 87f3fcb | 2016-04-28 15:52:11 +0100 | [diff] [blame] | 305 | } |
| 306 | |
Nicolas Geoffray | dc23d83 | 2015-02-16 11:15:43 +0000 | [diff] [blame] | 307 | bool CodeGenerator::GoesToNextBlock(HBasicBlock* current, HBasicBlock* next) const { |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 308 | DCHECK_EQ((*block_order_)[current_block_index_], current); |
Nicolas Geoffray | dc23d83 | 2015-02-16 11:15:43 +0000 | [diff] [blame] | 309 | return GetNextBlockToEmit() == FirstNonEmptyBlock(next); |
| 310 | } |
| 311 | |
| 312 | HBasicBlock* CodeGenerator::GetNextBlockToEmit() const { |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 313 | for (size_t i = current_block_index_ + 1; i < block_order_->size(); ++i) { |
| 314 | HBasicBlock* block = (*block_order_)[i]; |
David Brazdil | fc6a86a | 2015-06-26 10:33:45 +0000 | [diff] [blame] | 315 | if (!block->IsSingleJump()) { |
Nicolas Geoffray | dc23d83 | 2015-02-16 11:15:43 +0000 | [diff] [blame] | 316 | return block; |
| 317 | } |
| 318 | } |
| 319 | return nullptr; |
| 320 | } |
| 321 | |
| 322 | HBasicBlock* CodeGenerator::FirstNonEmptyBlock(HBasicBlock* block) const { |
David Brazdil | fc6a86a | 2015-06-26 10:33:45 +0000 | [diff] [blame] | 323 | while (block->IsSingleJump()) { |
Vladimir Marko | ec7802a | 2015-10-01 20:57:57 +0100 | [diff] [blame] | 324 | block = block->GetSuccessors()[0]; |
Nicolas Geoffray | dc23d83 | 2015-02-16 11:15:43 +0000 | [diff] [blame] | 325 | } |
| 326 | return block; |
| 327 | } |
| 328 | |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 329 | class DisassemblyScope { |
| 330 | public: |
| 331 | DisassemblyScope(HInstruction* instruction, const CodeGenerator& codegen) |
| 332 | : codegen_(codegen), instruction_(instruction), start_offset_(static_cast<size_t>(-1)) { |
| 333 | if (codegen_.GetDisassemblyInformation() != nullptr) { |
| 334 | start_offset_ = codegen_.GetAssembler().CodeSize(); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | ~DisassemblyScope() { |
| 339 | // We avoid building this data when we know it will not be used. |
| 340 | if (codegen_.GetDisassemblyInformation() != nullptr) { |
| 341 | codegen_.GetDisassemblyInformation()->AddInstructionInterval( |
| 342 | instruction_, start_offset_, codegen_.GetAssembler().CodeSize()); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | private: |
| 347 | const CodeGenerator& codegen_; |
| 348 | HInstruction* instruction_; |
| 349 | size_t start_offset_; |
| 350 | }; |
| 351 | |
| 352 | |
| 353 | void CodeGenerator::GenerateSlowPaths() { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 354 | DCHECK(code_generation_data_ != nullptr); |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 355 | size_t code_start = 0; |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 356 | for (const std::unique_ptr<SlowPathCode>& slow_path_ptr : code_generation_data_->GetSlowPaths()) { |
| 357 | SlowPathCode* slow_path = slow_path_ptr.get(); |
Vladimir Marko | 0f7dca4 | 2015-11-02 14:36:43 +0000 | [diff] [blame] | 358 | current_slow_path_ = slow_path; |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 359 | if (disasm_info_ != nullptr) { |
| 360 | code_start = GetAssembler()->CodeSize(); |
| 361 | } |
David Srbecky | 9cd6d37 | 2016-02-09 15:24:47 +0000 | [diff] [blame] | 362 | // Record the dex pc at start of slow path (required for java line number mapping). |
David Srbecky | d28f4a0 | 2016-03-14 17:14:24 +0000 | [diff] [blame] | 363 | MaybeRecordNativeDebugInfo(slow_path->GetInstruction(), slow_path->GetDexPc(), slow_path); |
Vladimir Marko | 225b646 | 2015-09-28 12:17:40 +0100 | [diff] [blame] | 364 | slow_path->EmitNativeCode(this); |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 365 | if (disasm_info_ != nullptr) { |
Vladimir Marko | 225b646 | 2015-09-28 12:17:40 +0100 | [diff] [blame] | 366 | disasm_info_->AddSlowPathInterval(slow_path, code_start, GetAssembler()->CodeSize()); |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 367 | } |
| 368 | } |
Vladimir Marko | 0f7dca4 | 2015-11-02 14:36:43 +0000 | [diff] [blame] | 369 | current_slow_path_ = nullptr; |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 370 | } |
| 371 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 372 | void CodeGenerator::InitializeCodeGenerationData() { |
| 373 | DCHECK(code_generation_data_ == nullptr); |
| 374 | code_generation_data_ = CodeGenerationData::Create(graph_->GetArenaStack(), GetInstructionSet()); |
| 375 | } |
| 376 | |
David Brazdil | 58282f4 | 2016-01-14 12:45:10 +0000 | [diff] [blame] | 377 | void CodeGenerator::Compile(CodeAllocator* allocator) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 378 | InitializeCodeGenerationData(); |
| 379 | |
David Brazdil | 58282f4 | 2016-01-14 12:45:10 +0000 | [diff] [blame] | 380 | // The register allocator already called `InitializeCodeGeneration`, |
| 381 | // where the frame size has been computed. |
| 382 | DCHECK(block_order_ != nullptr); |
| 383 | Initialize(); |
| 384 | |
Nicolas Geoffray | 8a16d97 | 2014-09-11 10:30:02 +0100 | [diff] [blame] | 385 | HGraphVisitor* instruction_visitor = GetInstructionVisitor(); |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 386 | DCHECK_EQ(current_block_index_, 0u); |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 387 | |
David Srbecky | f6ba5b3 | 2018-06-23 22:05:49 +0100 | [diff] [blame] | 388 | GetStackMapStream()->BeginMethod(HasEmptyFrame() ? 0 : frame_size_, |
| 389 | core_spill_mask_, |
| 390 | fpu_spill_mask_, |
Nicolas Geoffray | a59af8a | 2019-11-27 17:42:32 +0000 | [diff] [blame] | 391 | GetGraph()->GetNumberOfVRegs(), |
| 392 | GetGraph()->IsCompilingBaseline()); |
David Srbecky | f6ba5b3 | 2018-06-23 22:05:49 +0100 | [diff] [blame] | 393 | |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 394 | size_t frame_start = GetAssembler()->CodeSize(); |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 395 | GenerateFrameEntry(); |
David Srbecky | c6b4dd8 | 2015-04-07 20:32:43 +0100 | [diff] [blame] | 396 | DCHECK_EQ(GetAssembler()->cfi().GetCurrentCFAOffset(), static_cast<int>(frame_size_)); |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 397 | if (disasm_info_ != nullptr) { |
| 398 | disasm_info_->SetFrameEntryInterval(frame_start, GetAssembler()->CodeSize()); |
| 399 | } |
| 400 | |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 401 | for (size_t e = block_order_->size(); current_block_index_ < e; ++current_block_index_) { |
| 402 | HBasicBlock* block = (*block_order_)[current_block_index_]; |
Nicolas Geoffray | dc23d83 | 2015-02-16 11:15:43 +0000 | [diff] [blame] | 403 | // Don't generate code for an empty block. Its predecessors will branch to its successor |
| 404 | // directly. Also, the label of that block will not be emitted, so this helps catch |
| 405 | // errors where we reference that label. |
David Brazdil | fc6a86a | 2015-06-26 10:33:45 +0000 | [diff] [blame] | 406 | if (block->IsSingleJump()) continue; |
Nicolas Geoffray | 92a73ae | 2014-10-16 11:12:52 +0100 | [diff] [blame] | 407 | Bind(block); |
David Srbecky | c7098ff | 2016-02-09 14:30:11 +0000 | [diff] [blame] | 408 | // This ensures that we have correct native line mapping for all native instructions. |
| 409 | // It is necessary to make stepping over a statement work. Otherwise, any initial |
| 410 | // instructions (e.g. moves) would be assumed to be the start of next statement. |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 411 | MaybeRecordNativeDebugInfo(/* instruction= */ nullptr, block->GetDexPc()); |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 412 | for (HInstructionIterator it(block->GetInstructions()); !it.Done(); it.Advance()) { |
| 413 | HInstruction* current = it.Current(); |
David Srbecky | d28f4a0 | 2016-03-14 17:14:24 +0000 | [diff] [blame] | 414 | if (current->HasEnvironment()) { |
| 415 | // Create stackmap for HNativeDebugInfo or any instruction which calls native code. |
| 416 | // Note that we need correct mapping for the native PC of the call instruction, |
| 417 | // so the runtime's stackmap is not sufficient since it is at PC after the call. |
| 418 | MaybeRecordNativeDebugInfo(current, block->GetDexPc()); |
| 419 | } |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 420 | DisassemblyScope disassembly_scope(current, *this); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 421 | DCHECK(CheckTypeConsistency(current)); |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 422 | current->Accept(instruction_visitor); |
| 423 | } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 424 | } |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 425 | |
Alexandre Rames | eb7b739 | 2015-06-19 14:47:01 +0100 | [diff] [blame] | 426 | GenerateSlowPaths(); |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 427 | |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 428 | // Emit catch stack maps at the end of the stack map stream as expected by the |
| 429 | // runtime exception handler. |
David Brazdil | 58282f4 | 2016-01-14 12:45:10 +0000 | [diff] [blame] | 430 | if (graph_->HasTryCatch()) { |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 431 | RecordCatchBlockInfo(); |
| 432 | } |
| 433 | |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 434 | // Finalize instructions in assember; |
Serban Constantinescu | 32f5b4d | 2014-11-25 20:05:46 +0000 | [diff] [blame] | 435 | Finalize(allocator); |
David Srbecky | f6ba5b3 | 2018-06-23 22:05:49 +0100 | [diff] [blame] | 436 | |
Nicolas Geoffray | bf5f0f3 | 2019-03-05 15:41:50 +0000 | [diff] [blame] | 437 | GetStackMapStream()->EndMethod(); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 438 | } |
| 439 | |
Serban Constantinescu | 32f5b4d | 2014-11-25 20:05:46 +0000 | [diff] [blame] | 440 | void CodeGenerator::Finalize(CodeAllocator* allocator) { |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 441 | size_t code_size = GetAssembler()->CodeSize(); |
| 442 | uint8_t* buffer = allocator->Allocate(code_size); |
Serban Constantinescu | 32f5b4d | 2014-11-25 20:05:46 +0000 | [diff] [blame] | 443 | |
Nicolas Geoffray | 86dbb9a | 2014-06-04 11:12:39 +0100 | [diff] [blame] | 444 | MemoryRegion code(buffer, code_size); |
| 445 | GetAssembler()->FinalizeInstructions(code); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 446 | } |
| 447 | |
Vladimir Marko | d8dbc8d | 2017-09-20 13:37:47 +0100 | [diff] [blame] | 448 | void CodeGenerator::EmitLinkerPatches( |
| 449 | ArenaVector<linker::LinkerPatch>* linker_patches ATTRIBUTE_UNUSED) { |
Vladimir Marko | 5815501 | 2015-08-19 12:49:41 +0000 | [diff] [blame] | 450 | // No linker patches by default. |
| 451 | } |
| 452 | |
Vladimir Marko | ca1e038 | 2018-04-11 09:58:41 +0000 | [diff] [blame] | 453 | bool CodeGenerator::NeedsThunkCode(const linker::LinkerPatch& patch ATTRIBUTE_UNUSED) const { |
| 454 | // Code generators that create patches requiring thunk compilation should override this function. |
| 455 | return false; |
| 456 | } |
| 457 | |
| 458 | void CodeGenerator::EmitThunkCode(const linker::LinkerPatch& patch ATTRIBUTE_UNUSED, |
| 459 | /*out*/ ArenaVector<uint8_t>* code ATTRIBUTE_UNUSED, |
| 460 | /*out*/ std::string* debug_name ATTRIBUTE_UNUSED) { |
| 461 | // Code generators that create patches requiring thunk compilation should override this function. |
| 462 | LOG(FATAL) << "Unexpected call to EmitThunkCode()."; |
| 463 | } |
| 464 | |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 465 | void CodeGenerator::InitializeCodeGeneration(size_t number_of_spill_slots, |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 466 | size_t maximum_safepoint_spill_size, |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 467 | size_t number_of_out_slots, |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 468 | const ArenaVector<HBasicBlock*>& block_order) { |
Nicolas Geoffray | 4c204ba | 2015-02-03 15:12:35 +0000 | [diff] [blame] | 469 | block_order_ = &block_order; |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 470 | DCHECK(!block_order.empty()); |
| 471 | DCHECK(block_order[0] == GetGraph()->GetEntryBlock()); |
Nicolas Geoffray | 4dee636 | 2015-01-23 18:23:14 +0000 | [diff] [blame] | 472 | ComputeSpillMask(); |
Alexandre Rames | 68bd9b9 | 2016-07-15 17:41:13 +0100 | [diff] [blame] | 473 | first_register_slot_in_slow_path_ = RoundUp( |
| 474 | (number_of_out_slots + number_of_spill_slots) * kVRegSize, GetPreferredSlotsAlignment()); |
Nicolas Geoffray | 3bca0df | 2014-09-19 11:01:00 +0100 | [diff] [blame] | 475 | |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 476 | if (number_of_spill_slots == 0 |
| 477 | && !HasAllocatedCalleeSaveRegisters() |
| 478 | && IsLeafMethod() |
| 479 | && !RequiresCurrentMethod()) { |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 480 | DCHECK_EQ(maximum_safepoint_spill_size, 0u); |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 481 | SetFrameSize(CallPushesPC() ? GetWordSize() : 0); |
| 482 | } else { |
| 483 | SetFrameSize(RoundUp( |
Alexandre Rames | 68bd9b9 | 2016-07-15 17:41:13 +0100 | [diff] [blame] | 484 | first_register_slot_in_slow_path_ |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 485 | + maximum_safepoint_spill_size |
Mingyao Yang | 063fc77 | 2016-08-02 11:02:54 -0700 | [diff] [blame] | 486 | + (GetGraph()->HasShouldDeoptimizeFlag() ? kShouldDeoptimizeFlagSize : 0) |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 487 | + FrameEntrySpillSize(), |
| 488 | kStackAlignment)); |
| 489 | } |
Nicolas Geoffray | ab032bc | 2014-07-15 12:55:21 +0100 | [diff] [blame] | 490 | } |
| 491 | |
Nicolas Geoffray | fd88f16 | 2015-06-03 11:23:52 +0100 | [diff] [blame] | 492 | void CodeGenerator::CreateCommonInvokeLocationSummary( |
Nicolas Geoffray | 4e40c26 | 2015-06-03 12:02:38 +0100 | [diff] [blame] | 493 | HInvoke* invoke, InvokeDexCallingConventionVisitor* visitor) { |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 494 | ArenaAllocator* allocator = invoke->GetBlock()->GetGraph()->GetAllocator(); |
Serban Constantinescu | 54ff482 | 2016-07-07 18:03:19 +0100 | [diff] [blame] | 495 | LocationSummary* locations = new (allocator) LocationSummary(invoke, |
| 496 | LocationSummary::kCallOnMainOnly); |
Nicolas Geoffray | fd88f16 | 2015-06-03 11:23:52 +0100 | [diff] [blame] | 497 | |
| 498 | for (size_t i = 0; i < invoke->GetNumberOfArguments(); i++) { |
| 499 | HInstruction* input = invoke->InputAt(i); |
| 500 | locations->SetInAt(i, visitor->GetNextLocation(input->GetType())); |
| 501 | } |
| 502 | |
| 503 | locations->SetOut(visitor->GetReturnLocation(invoke->GetType())); |
Nicolas Geoffray | 94015b9 | 2015-06-04 18:21:04 +0100 | [diff] [blame] | 504 | |
| 505 | if (invoke->IsInvokeStaticOrDirect()) { |
| 506 | HInvokeStaticOrDirect* call = invoke->AsInvokeStaticOrDirect(); |
Vladimir Marko | 86c8752 | 2020-05-11 16:55:55 +0100 | [diff] [blame] | 507 | HInvokeStaticOrDirect::MethodLoadKind method_load_kind = call->GetMethodLoadKind(); |
| 508 | HInvokeStaticOrDirect::CodePtrLocation code_ptr_location = call->GetCodePtrLocation(); |
| 509 | if (code_ptr_location == HInvokeStaticOrDirect::CodePtrLocation::kCallCriticalNative) { |
| 510 | locations->AddTemp(Location::RequiresRegister()); // For target method. |
| 511 | } |
| 512 | if (code_ptr_location == HInvokeStaticOrDirect::CodePtrLocation::kCallCriticalNative || |
| 513 | method_load_kind == HInvokeStaticOrDirect::MethodLoadKind::kRecursive) { |
| 514 | // For `kCallCriticalNative` we need the current method as the hidden argument |
| 515 | // if we reach the dlsym lookup stub for @CriticalNative. |
| 516 | locations->SetInAt(call->GetCurrentMethodIndex(), visitor->GetMethodLocation()); |
| 517 | } else { |
| 518 | locations->AddTemp(visitor->GetMethodLocation()); |
| 519 | if (method_load_kind == HInvokeStaticOrDirect::MethodLoadKind::kRuntimeCall) { |
| 520 | locations->SetInAt(call->GetCurrentMethodIndex(), Location::RequiresRegister()); |
| 521 | } |
Nicolas Geoffray | 94015b9 | 2015-06-04 18:21:04 +0100 | [diff] [blame] | 522 | } |
Orion Hodson | cd260eb | 2018-06-06 09:04:17 +0100 | [diff] [blame] | 523 | } else if (!invoke->IsInvokePolymorphic()) { |
Nicolas Geoffray | 94015b9 | 2015-06-04 18:21:04 +0100 | [diff] [blame] | 524 | locations->AddTemp(visitor->GetMethodLocation()); |
| 525 | } |
Nicolas Geoffray | fd88f16 | 2015-06-03 11:23:52 +0100 | [diff] [blame] | 526 | } |
| 527 | |
Vladimir Marko | 86c8752 | 2020-05-11 16:55:55 +0100 | [diff] [blame] | 528 | void CodeGenerator::PrepareCriticalNativeArgumentMoves( |
| 529 | HInvokeStaticOrDirect* invoke, |
| 530 | /*inout*/InvokeDexCallingConventionVisitor* visitor, |
| 531 | /*out*/HParallelMove* parallel_move) { |
| 532 | LocationSummary* locations = invoke->GetLocations(); |
| 533 | for (size_t i = 0, num = invoke->GetNumberOfArguments(); i != num; ++i) { |
| 534 | Location in_location = locations->InAt(i); |
| 535 | DataType::Type type = invoke->InputAt(i)->GetType(); |
| 536 | DCHECK_NE(type, DataType::Type::kReference); |
| 537 | Location out_location = visitor->GetNextLocation(type); |
| 538 | if (out_location.IsStackSlot() || out_location.IsDoubleStackSlot()) { |
| 539 | // Stack arguments will need to be moved after adjusting the SP. |
| 540 | parallel_move->AddMove(in_location, out_location, type, /*instruction=*/ nullptr); |
| 541 | } else { |
| 542 | // Register arguments should have been assigned their final locations for register allocation. |
| 543 | DCHECK(out_location.Equals(in_location)) << in_location << " -> " << out_location; |
| 544 | } |
| 545 | } |
| 546 | } |
| 547 | |
Vladimir Marko | dec7817 | 2020-06-19 15:31:23 +0100 | [diff] [blame] | 548 | void CodeGenerator::FinishCriticalNativeFrameSetup(size_t out_frame_size, |
| 549 | /*inout*/HParallelMove* parallel_move) { |
| 550 | DCHECK_NE(out_frame_size, 0u); |
| 551 | IncreaseFrame(out_frame_size); |
Vladimir Marko | 86c8752 | 2020-05-11 16:55:55 +0100 | [diff] [blame] | 552 | // Adjust the source stack offsets by `out_frame_size`, i.e. the additional |
| 553 | // frame size needed for outgoing stack arguments. |
| 554 | for (size_t i = 0, num = parallel_move->NumMoves(); i != num; ++i) { |
| 555 | MoveOperands* operands = parallel_move->MoveOperandsAt(i); |
| 556 | Location source = operands->GetSource(); |
| 557 | if (operands->GetSource().IsStackSlot()) { |
| 558 | operands->SetSource(Location::StackSlot(source.GetStackIndex() + out_frame_size)); |
| 559 | } else if (operands->GetSource().IsDoubleStackSlot()) { |
| 560 | operands->SetSource(Location::DoubleStackSlot(source.GetStackIndex() + out_frame_size)); |
| 561 | } |
| 562 | } |
Vladimir Marko | dec7817 | 2020-06-19 15:31:23 +0100 | [diff] [blame] | 563 | // Emit the moves. |
| 564 | GetMoveResolver()->EmitNativeCode(parallel_move); |
Vladimir Marko | 86c8752 | 2020-05-11 16:55:55 +0100 | [diff] [blame] | 565 | } |
| 566 | |
| 567 | const char* CodeGenerator::GetCriticalNativeShorty(HInvokeStaticOrDirect* invoke, |
| 568 | uint32_t* shorty_len) { |
| 569 | ScopedObjectAccess soa(Thread::Current()); |
| 570 | DCHECK(invoke->GetResolvedMethod()->IsCriticalNative()); |
| 571 | return invoke->GetResolvedMethod()->GetShorty(shorty_len); |
| 572 | } |
| 573 | |
Vladimir Marko | e7197bf | 2017-06-02 17:00:23 +0100 | [diff] [blame] | 574 | void CodeGenerator::GenerateInvokeStaticOrDirectRuntimeCall( |
| 575 | HInvokeStaticOrDirect* invoke, Location temp, SlowPathCode* slow_path) { |
| 576 | MoveConstant(temp, invoke->GetDexMethodIndex()); |
| 577 | |
| 578 | // The access check is unnecessary but we do not want to introduce |
| 579 | // extra entrypoints for the codegens that do not support some |
| 580 | // invoke type and fall back to the runtime call. |
| 581 | |
| 582 | // Initialize to anything to silent compiler warnings. |
| 583 | QuickEntrypointEnum entrypoint = kQuickInvokeStaticTrampolineWithAccessCheck; |
| 584 | switch (invoke->GetInvokeType()) { |
| 585 | case kStatic: |
| 586 | entrypoint = kQuickInvokeStaticTrampolineWithAccessCheck; |
| 587 | break; |
| 588 | case kDirect: |
| 589 | entrypoint = kQuickInvokeDirectTrampolineWithAccessCheck; |
| 590 | break; |
| 591 | case kSuper: |
| 592 | entrypoint = kQuickInvokeSuperTrampolineWithAccessCheck; |
| 593 | break; |
| 594 | case kVirtual: |
| 595 | case kInterface: |
Orion Hodson | 43f0cdb | 2017-10-10 14:47:32 +0100 | [diff] [blame] | 596 | case kPolymorphic: |
Orion Hodson | 4c8e12e | 2018-05-18 08:33:20 +0100 | [diff] [blame] | 597 | case kCustom: |
Vladimir Marko | e7197bf | 2017-06-02 17:00:23 +0100 | [diff] [blame] | 598 | LOG(FATAL) << "Unexpected invoke type: " << invoke->GetInvokeType(); |
| 599 | UNREACHABLE(); |
| 600 | } |
| 601 | |
| 602 | InvokeRuntime(entrypoint, invoke, invoke->GetDexPc(), slow_path); |
| 603 | } |
Calin Juravle | 175dc73 | 2015-08-25 15:42:32 +0100 | [diff] [blame] | 604 | void CodeGenerator::GenerateInvokeUnresolvedRuntimeCall(HInvokeUnresolved* invoke) { |
| 605 | MoveConstant(invoke->GetLocations()->GetTemp(0), invoke->GetDexMethodIndex()); |
| 606 | |
| 607 | // Initialize to anything to silent compiler warnings. |
| 608 | QuickEntrypointEnum entrypoint = kQuickInvokeStaticTrampolineWithAccessCheck; |
Nicolas Geoffray | 5e4e11e | 2016-09-22 13:17:41 +0100 | [diff] [blame] | 609 | switch (invoke->GetInvokeType()) { |
Calin Juravle | 175dc73 | 2015-08-25 15:42:32 +0100 | [diff] [blame] | 610 | case kStatic: |
| 611 | entrypoint = kQuickInvokeStaticTrampolineWithAccessCheck; |
| 612 | break; |
| 613 | case kDirect: |
| 614 | entrypoint = kQuickInvokeDirectTrampolineWithAccessCheck; |
| 615 | break; |
| 616 | case kVirtual: |
| 617 | entrypoint = kQuickInvokeVirtualTrampolineWithAccessCheck; |
| 618 | break; |
| 619 | case kSuper: |
| 620 | entrypoint = kQuickInvokeSuperTrampolineWithAccessCheck; |
| 621 | break; |
| 622 | case kInterface: |
| 623 | entrypoint = kQuickInvokeInterfaceTrampolineWithAccessCheck; |
| 624 | break; |
Orion Hodson | 43f0cdb | 2017-10-10 14:47:32 +0100 | [diff] [blame] | 625 | case kPolymorphic: |
Orion Hodson | 4c8e12e | 2018-05-18 08:33:20 +0100 | [diff] [blame] | 626 | case kCustom: |
Orion Hodson | 43f0cdb | 2017-10-10 14:47:32 +0100 | [diff] [blame] | 627 | LOG(FATAL) << "Unexpected invoke type: " << invoke->GetInvokeType(); |
| 628 | UNREACHABLE(); |
Calin Juravle | 175dc73 | 2015-08-25 15:42:32 +0100 | [diff] [blame] | 629 | } |
| 630 | InvokeRuntime(entrypoint, invoke, invoke->GetDexPc(), nullptr); |
| 631 | } |
| 632 | |
Orion Hodson | ac14139 | 2017-01-13 11:53:47 +0000 | [diff] [blame] | 633 | void CodeGenerator::GenerateInvokePolymorphicCall(HInvokePolymorphic* invoke) { |
Orion Hodson | cd260eb | 2018-06-06 09:04:17 +0100 | [diff] [blame] | 634 | // invoke-polymorphic does not use a temporary to convey any additional information (e.g. a |
| 635 | // method index) since it requires multiple info from the instruction (registers A, B, H). Not |
| 636 | // using the reservation has no effect on the registers used in the runtime call. |
Orion Hodson | ac14139 | 2017-01-13 11:53:47 +0000 | [diff] [blame] | 637 | QuickEntrypointEnum entrypoint = kQuickInvokePolymorphic; |
| 638 | InvokeRuntime(entrypoint, invoke, invoke->GetDexPc(), nullptr); |
| 639 | } |
| 640 | |
Orion Hodson | 4c8e12e | 2018-05-18 08:33:20 +0100 | [diff] [blame] | 641 | void CodeGenerator::GenerateInvokeCustomCall(HInvokeCustom* invoke) { |
| 642 | MoveConstant(invoke->GetLocations()->GetTemp(0), invoke->GetCallSiteIndex()); |
| 643 | QuickEntrypointEnum entrypoint = kQuickInvokeCustom; |
| 644 | InvokeRuntime(entrypoint, invoke, invoke->GetDexPc(), nullptr); |
| 645 | } |
| 646 | |
Vladimir Marko | 552a134 | 2017-10-31 10:56:47 +0000 | [diff] [blame] | 647 | void CodeGenerator::CreateStringBuilderAppendLocations(HStringBuilderAppend* instruction, |
| 648 | Location out) { |
| 649 | ArenaAllocator* allocator = GetGraph()->GetAllocator(); |
| 650 | LocationSummary* locations = |
| 651 | new (allocator) LocationSummary(instruction, LocationSummary::kCallOnMainOnly); |
| 652 | locations->SetOut(out); |
| 653 | instruction->GetLocations()->SetInAt(instruction->FormatIndex(), |
| 654 | Location::ConstantLocation(instruction->GetFormat())); |
| 655 | |
| 656 | uint32_t format = static_cast<uint32_t>(instruction->GetFormat()->GetValue()); |
| 657 | uint32_t f = format; |
| 658 | PointerSize pointer_size = InstructionSetPointerSize(GetInstructionSet()); |
| 659 | size_t stack_offset = static_cast<size_t>(pointer_size); // Start after the ArtMethod*. |
| 660 | for (size_t i = 0, num_args = instruction->GetNumberOfArguments(); i != num_args; ++i) { |
| 661 | StringBuilderAppend::Argument arg_type = |
| 662 | static_cast<StringBuilderAppend::Argument>(f & StringBuilderAppend::kArgMask); |
| 663 | switch (arg_type) { |
| 664 | case StringBuilderAppend::Argument::kStringBuilder: |
| 665 | case StringBuilderAppend::Argument::kString: |
| 666 | case StringBuilderAppend::Argument::kCharArray: |
| 667 | static_assert(sizeof(StackReference<mirror::Object>) == sizeof(uint32_t), "Size check."); |
| 668 | FALLTHROUGH_INTENDED; |
| 669 | case StringBuilderAppend::Argument::kBoolean: |
| 670 | case StringBuilderAppend::Argument::kChar: |
| 671 | case StringBuilderAppend::Argument::kInt: |
| 672 | case StringBuilderAppend::Argument::kFloat: |
| 673 | locations->SetInAt(i, Location::StackSlot(stack_offset)); |
| 674 | break; |
| 675 | case StringBuilderAppend::Argument::kLong: |
| 676 | case StringBuilderAppend::Argument::kDouble: |
| 677 | stack_offset = RoundUp(stack_offset, sizeof(uint64_t)); |
| 678 | locations->SetInAt(i, Location::DoubleStackSlot(stack_offset)); |
| 679 | // Skip the low word, let the common code skip the high word. |
| 680 | stack_offset += sizeof(uint32_t); |
| 681 | break; |
| 682 | default: |
| 683 | LOG(FATAL) << "Unexpected arg format: 0x" << std::hex |
| 684 | << (f & StringBuilderAppend::kArgMask) << " full format: 0x" << format; |
| 685 | UNREACHABLE(); |
| 686 | } |
| 687 | f >>= StringBuilderAppend::kBitsPerArg; |
| 688 | stack_offset += sizeof(uint32_t); |
| 689 | } |
| 690 | DCHECK_EQ(f, 0u); |
| 691 | |
| 692 | size_t param_size = stack_offset - static_cast<size_t>(pointer_size); |
| 693 | DCHECK_ALIGNED(param_size, kVRegSize); |
| 694 | size_t num_vregs = param_size / kVRegSize; |
| 695 | graph_->UpdateMaximumNumberOfOutVRegs(num_vregs); |
| 696 | } |
| 697 | |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 698 | void CodeGenerator::CreateUnresolvedFieldLocationSummary( |
| 699 | HInstruction* field_access, |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 700 | DataType::Type field_type, |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 701 | const FieldAccessCallingConvention& calling_convention) { |
| 702 | bool is_instance = field_access->IsUnresolvedInstanceFieldGet() |
| 703 | || field_access->IsUnresolvedInstanceFieldSet(); |
| 704 | bool is_get = field_access->IsUnresolvedInstanceFieldGet() |
| 705 | || field_access->IsUnresolvedStaticFieldGet(); |
| 706 | |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 707 | ArenaAllocator* allocator = field_access->GetBlock()->GetGraph()->GetAllocator(); |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 708 | LocationSummary* locations = |
Serban Constantinescu | 54ff482 | 2016-07-07 18:03:19 +0100 | [diff] [blame] | 709 | new (allocator) LocationSummary(field_access, LocationSummary::kCallOnMainOnly); |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 710 | |
| 711 | locations->AddTemp(calling_convention.GetFieldIndexLocation()); |
| 712 | |
| 713 | if (is_instance) { |
| 714 | // Add the `this` object for instance field accesses. |
| 715 | locations->SetInAt(0, calling_convention.GetObjectLocation()); |
| 716 | } |
| 717 | |
| 718 | // Note that pSetXXStatic/pGetXXStatic always takes/returns an int or int64 |
| 719 | // regardless of the the type. Because of that we forced to special case |
| 720 | // the access to floating point values. |
| 721 | if (is_get) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 722 | if (DataType::IsFloatingPointType(field_type)) { |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 723 | // The return value will be stored in regular registers while register |
| 724 | // allocator expects it in a floating point register. |
| 725 | // Note We don't need to request additional temps because the return |
| 726 | // register(s) are already blocked due the call and they may overlap with |
| 727 | // the input or field index. |
| 728 | // The transfer between the two will be done at codegen level. |
| 729 | locations->SetOut(calling_convention.GetFpuLocation(field_type)); |
| 730 | } else { |
| 731 | locations->SetOut(calling_convention.GetReturnLocation(field_type)); |
| 732 | } |
| 733 | } else { |
| 734 | size_t set_index = is_instance ? 1 : 0; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 735 | if (DataType::IsFloatingPointType(field_type)) { |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 736 | // The set value comes from a float location while the calling convention |
| 737 | // expects it in a regular register location. Allocate a temp for it and |
| 738 | // make the transfer at codegen. |
| 739 | AddLocationAsTemp(calling_convention.GetSetValueLocation(field_type, is_instance), locations); |
| 740 | locations->SetInAt(set_index, calling_convention.GetFpuLocation(field_type)); |
| 741 | } else { |
| 742 | locations->SetInAt(set_index, |
| 743 | calling_convention.GetSetValueLocation(field_type, is_instance)); |
| 744 | } |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | void CodeGenerator::GenerateUnresolvedFieldAccess( |
| 749 | HInstruction* field_access, |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 750 | DataType::Type field_type, |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 751 | uint32_t field_index, |
| 752 | uint32_t dex_pc, |
| 753 | const FieldAccessCallingConvention& calling_convention) { |
| 754 | LocationSummary* locations = field_access->GetLocations(); |
| 755 | |
| 756 | MoveConstant(locations->GetTemp(0), field_index); |
| 757 | |
| 758 | bool is_instance = field_access->IsUnresolvedInstanceFieldGet() |
| 759 | || field_access->IsUnresolvedInstanceFieldSet(); |
| 760 | bool is_get = field_access->IsUnresolvedInstanceFieldGet() |
| 761 | || field_access->IsUnresolvedStaticFieldGet(); |
| 762 | |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 763 | if (!is_get && DataType::IsFloatingPointType(field_type)) { |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 764 | // Copy the float value to be set into the calling convention register. |
| 765 | // Note that using directly the temp location is problematic as we don't |
| 766 | // support temp register pairs. To avoid boilerplate conversion code, use |
| 767 | // the location from the calling convention. |
| 768 | MoveLocation(calling_convention.GetSetValueLocation(field_type, is_instance), |
| 769 | locations->InAt(is_instance ? 1 : 0), |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 770 | (DataType::Is64BitType(field_type) ? DataType::Type::kInt64 |
| 771 | : DataType::Type::kInt32)); |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | QuickEntrypointEnum entrypoint = kQuickSet8Static; // Initialize to anything to avoid warnings. |
| 775 | switch (field_type) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 776 | case DataType::Type::kBool: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 777 | entrypoint = is_instance |
| 778 | ? (is_get ? kQuickGetBooleanInstance : kQuickSet8Instance) |
| 779 | : (is_get ? kQuickGetBooleanStatic : kQuickSet8Static); |
| 780 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 781 | case DataType::Type::kInt8: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 782 | entrypoint = is_instance |
| 783 | ? (is_get ? kQuickGetByteInstance : kQuickSet8Instance) |
| 784 | : (is_get ? kQuickGetByteStatic : kQuickSet8Static); |
| 785 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 786 | case DataType::Type::kInt16: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 787 | entrypoint = is_instance |
| 788 | ? (is_get ? kQuickGetShortInstance : kQuickSet16Instance) |
| 789 | : (is_get ? kQuickGetShortStatic : kQuickSet16Static); |
| 790 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 791 | case DataType::Type::kUint16: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 792 | entrypoint = is_instance |
| 793 | ? (is_get ? kQuickGetCharInstance : kQuickSet16Instance) |
| 794 | : (is_get ? kQuickGetCharStatic : kQuickSet16Static); |
| 795 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 796 | case DataType::Type::kInt32: |
| 797 | case DataType::Type::kFloat32: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 798 | entrypoint = is_instance |
| 799 | ? (is_get ? kQuickGet32Instance : kQuickSet32Instance) |
| 800 | : (is_get ? kQuickGet32Static : kQuickSet32Static); |
| 801 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 802 | case DataType::Type::kReference: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 803 | entrypoint = is_instance |
| 804 | ? (is_get ? kQuickGetObjInstance : kQuickSetObjInstance) |
| 805 | : (is_get ? kQuickGetObjStatic : kQuickSetObjStatic); |
| 806 | break; |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 807 | case DataType::Type::kInt64: |
| 808 | case DataType::Type::kFloat64: |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 809 | entrypoint = is_instance |
| 810 | ? (is_get ? kQuickGet64Instance : kQuickSet64Instance) |
| 811 | : (is_get ? kQuickGet64Static : kQuickSet64Static); |
| 812 | break; |
| 813 | default: |
| 814 | LOG(FATAL) << "Invalid type " << field_type; |
| 815 | } |
| 816 | InvokeRuntime(entrypoint, field_access, dex_pc, nullptr); |
| 817 | |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 818 | if (is_get && DataType::IsFloatingPointType(field_type)) { |
Calin Juravle | e460d1d | 2015-09-29 04:52:17 +0100 | [diff] [blame] | 819 | MoveLocation(locations->Out(), calling_convention.GetReturnLocation(field_type), field_type); |
| 820 | } |
| 821 | } |
| 822 | |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 823 | void CodeGenerator::CreateLoadClassRuntimeCallLocationSummary(HLoadClass* cls, |
| 824 | Location runtime_type_index_location, |
| 825 | Location runtime_return_location) { |
Vladimir Marko | 847e6ce | 2017-06-02 13:55:07 +0100 | [diff] [blame] | 826 | DCHECK_EQ(cls->GetLoadKind(), HLoadClass::LoadKind::kRuntimeCall); |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 827 | DCHECK_EQ(cls->InputCount(), 1u); |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 828 | LocationSummary* locations = new (cls->GetBlock()->GetGraph()->GetAllocator()) LocationSummary( |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 829 | cls, LocationSummary::kCallOnMainOnly); |
| 830 | locations->SetInAt(0, Location::NoLocation()); |
| 831 | locations->AddTemp(runtime_type_index_location); |
| 832 | locations->SetOut(runtime_return_location); |
Calin Juravle | 98893e1 | 2015-10-02 21:05:03 +0100 | [diff] [blame] | 833 | } |
| 834 | |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 835 | void CodeGenerator::GenerateLoadClassRuntimeCall(HLoadClass* cls) { |
Vladimir Marko | 847e6ce | 2017-06-02 13:55:07 +0100 | [diff] [blame] | 836 | DCHECK_EQ(cls->GetLoadKind(), HLoadClass::LoadKind::kRuntimeCall); |
Vladimir Marko | a9f303c | 2018-07-20 16:43:56 +0100 | [diff] [blame] | 837 | DCHECK(!cls->MustGenerateClinitCheck()); |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 838 | LocationSummary* locations = cls->GetLocations(); |
| 839 | MoveConstant(locations->GetTemp(0), cls->GetTypeIndex().index_); |
| 840 | if (cls->NeedsAccessCheck()) { |
Vladimir Marko | 9d47925 | 2018-07-24 11:35:20 +0100 | [diff] [blame] | 841 | CheckEntrypointTypes<kQuickResolveTypeAndVerifyAccess, void*, uint32_t>(); |
| 842 | InvokeRuntime(kQuickResolveTypeAndVerifyAccess, cls, cls->GetDexPc()); |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 843 | } else { |
Vladimir Marko | 9d47925 | 2018-07-24 11:35:20 +0100 | [diff] [blame] | 844 | CheckEntrypointTypes<kQuickResolveType, void*, uint32_t>(); |
| 845 | InvokeRuntime(kQuickResolveType, cls, cls->GetDexPc()); |
Vladimir Marko | 4155998 | 2017-01-06 14:04:23 +0000 | [diff] [blame] | 846 | } |
| 847 | } |
Calin Juravle | 98893e1 | 2015-10-02 21:05:03 +0100 | [diff] [blame] | 848 | |
Orion Hodson | dbaa5c7 | 2018-05-10 08:22:46 +0100 | [diff] [blame] | 849 | void CodeGenerator::CreateLoadMethodHandleRuntimeCallLocationSummary( |
| 850 | HLoadMethodHandle* method_handle, |
| 851 | Location runtime_proto_index_location, |
| 852 | Location runtime_return_location) { |
| 853 | DCHECK_EQ(method_handle->InputCount(), 1u); |
| 854 | LocationSummary* locations = |
| 855 | new (method_handle->GetBlock()->GetGraph()->GetAllocator()) LocationSummary( |
| 856 | method_handle, LocationSummary::kCallOnMainOnly); |
| 857 | locations->SetInAt(0, Location::NoLocation()); |
| 858 | locations->AddTemp(runtime_proto_index_location); |
| 859 | locations->SetOut(runtime_return_location); |
| 860 | } |
| 861 | |
| 862 | void CodeGenerator::GenerateLoadMethodHandleRuntimeCall(HLoadMethodHandle* method_handle) { |
| 863 | LocationSummary* locations = method_handle->GetLocations(); |
| 864 | MoveConstant(locations->GetTemp(0), method_handle->GetMethodHandleIndex()); |
| 865 | CheckEntrypointTypes<kQuickResolveMethodHandle, void*, uint32_t>(); |
| 866 | InvokeRuntime(kQuickResolveMethodHandle, method_handle, method_handle->GetDexPc()); |
| 867 | } |
| 868 | |
Orion Hodson | 18259d7 | 2018-04-12 11:18:23 +0100 | [diff] [blame] | 869 | void CodeGenerator::CreateLoadMethodTypeRuntimeCallLocationSummary( |
| 870 | HLoadMethodType* method_type, |
| 871 | Location runtime_proto_index_location, |
| 872 | Location runtime_return_location) { |
| 873 | DCHECK_EQ(method_type->InputCount(), 1u); |
| 874 | LocationSummary* locations = |
| 875 | new (method_type->GetBlock()->GetGraph()->GetAllocator()) LocationSummary( |
| 876 | method_type, LocationSummary::kCallOnMainOnly); |
| 877 | locations->SetInAt(0, Location::NoLocation()); |
| 878 | locations->AddTemp(runtime_proto_index_location); |
| 879 | locations->SetOut(runtime_return_location); |
| 880 | } |
| 881 | |
| 882 | void CodeGenerator::GenerateLoadMethodTypeRuntimeCall(HLoadMethodType* method_type) { |
| 883 | LocationSummary* locations = method_type->GetLocations(); |
Orion Hodson | 06d10a7 | 2018-05-14 08:53:38 +0100 | [diff] [blame] | 884 | MoveConstant(locations->GetTemp(0), method_type->GetProtoIndex().index_); |
Orion Hodson | 18259d7 | 2018-04-12 11:18:23 +0100 | [diff] [blame] | 885 | CheckEntrypointTypes<kQuickResolveMethodType, void*, uint32_t>(); |
| 886 | InvokeRuntime(kQuickResolveMethodType, method_type, method_type->GetDexPc()); |
| 887 | } |
| 888 | |
Vladimir Marko | e47f60c | 2018-02-21 13:43:28 +0000 | [diff] [blame] | 889 | static uint32_t GetBootImageOffsetImpl(const void* object, ImageHeader::ImageSections section) { |
| 890 | Runtime* runtime = Runtime::Current(); |
| 891 | DCHECK(runtime->IsAotCompiler()); |
| 892 | const std::vector<gc::space::ImageSpace*>& boot_image_spaces = |
| 893 | runtime->GetHeap()->GetBootImageSpaces(); |
| 894 | // Check that the `object` is in the expected section of one of the boot image files. |
| 895 | DCHECK(std::any_of(boot_image_spaces.begin(), |
| 896 | boot_image_spaces.end(), |
| 897 | [object, section](gc::space::ImageSpace* space) { |
| 898 | uintptr_t begin = reinterpret_cast<uintptr_t>(space->Begin()); |
| 899 | uintptr_t offset = reinterpret_cast<uintptr_t>(object) - begin; |
| 900 | return space->GetImageHeader().GetImageSection(section).Contains(offset); |
| 901 | })); |
| 902 | uintptr_t begin = reinterpret_cast<uintptr_t>(boot_image_spaces.front()->Begin()); |
| 903 | uintptr_t offset = reinterpret_cast<uintptr_t>(object) - begin; |
| 904 | return dchecked_integral_cast<uint32_t>(offset); |
| 905 | } |
| 906 | |
| 907 | // NO_THREAD_SAFETY_ANALYSIS: Avoid taking the mutator lock, boot image classes are non-moveable. |
| 908 | uint32_t CodeGenerator::GetBootImageOffset(HLoadClass* load_class) NO_THREAD_SAFETY_ANALYSIS { |
| 909 | DCHECK_EQ(load_class->GetLoadKind(), HLoadClass::LoadKind::kBootImageRelRo); |
| 910 | ObjPtr<mirror::Class> klass = load_class->GetClass().Get(); |
| 911 | DCHECK(klass != nullptr); |
| 912 | return GetBootImageOffsetImpl(klass.Ptr(), ImageHeader::kSectionObjects); |
| 913 | } |
| 914 | |
| 915 | // NO_THREAD_SAFETY_ANALYSIS: Avoid taking the mutator lock, boot image strings are non-moveable. |
| 916 | uint32_t CodeGenerator::GetBootImageOffset(HLoadString* load_string) NO_THREAD_SAFETY_ANALYSIS { |
| 917 | DCHECK_EQ(load_string->GetLoadKind(), HLoadString::LoadKind::kBootImageRelRo); |
| 918 | ObjPtr<mirror::String> string = load_string->GetString().Get(); |
| 919 | DCHECK(string != nullptr); |
| 920 | return GetBootImageOffsetImpl(string.Ptr(), ImageHeader::kSectionObjects); |
| 921 | } |
| 922 | |
| 923 | uint32_t CodeGenerator::GetBootImageOffset(HInvokeStaticOrDirect* invoke) { |
| 924 | DCHECK_EQ(invoke->GetMethodLoadKind(), HInvokeStaticOrDirect::MethodLoadKind::kBootImageRelRo); |
| 925 | ArtMethod* method = invoke->GetResolvedMethod(); |
| 926 | DCHECK(method != nullptr); |
| 927 | return GetBootImageOffsetImpl(method, ImageHeader::kSectionArtMethods); |
| 928 | } |
| 929 | |
Mark Mendell | 5f87418 | 2015-03-04 15:42:45 -0500 | [diff] [blame] | 930 | void CodeGenerator::BlockIfInRegister(Location location, bool is_out) const { |
| 931 | // The DCHECKS below check that a register is not specified twice in |
| 932 | // the summary. The out location can overlap with an input, so we need |
| 933 | // to special case it. |
| 934 | if (location.IsRegister()) { |
| 935 | DCHECK(is_out || !blocked_core_registers_[location.reg()]); |
| 936 | blocked_core_registers_[location.reg()] = true; |
| 937 | } else if (location.IsFpuRegister()) { |
| 938 | DCHECK(is_out || !blocked_fpu_registers_[location.reg()]); |
| 939 | blocked_fpu_registers_[location.reg()] = true; |
| 940 | } else if (location.IsFpuRegisterPair()) { |
| 941 | DCHECK(is_out || !blocked_fpu_registers_[location.AsFpuRegisterPairLow<int>()]); |
| 942 | blocked_fpu_registers_[location.AsFpuRegisterPairLow<int>()] = true; |
| 943 | DCHECK(is_out || !blocked_fpu_registers_[location.AsFpuRegisterPairHigh<int>()]); |
| 944 | blocked_fpu_registers_[location.AsFpuRegisterPairHigh<int>()] = true; |
| 945 | } else if (location.IsRegisterPair()) { |
| 946 | DCHECK(is_out || !blocked_core_registers_[location.AsRegisterPairLow<int>()]); |
| 947 | blocked_core_registers_[location.AsRegisterPairLow<int>()] = true; |
| 948 | DCHECK(is_out || !blocked_core_registers_[location.AsRegisterPairHigh<int>()]); |
| 949 | blocked_core_registers_[location.AsRegisterPairHigh<int>()] = true; |
| 950 | } |
| 951 | } |
| 952 | |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 953 | void CodeGenerator::AllocateLocations(HInstruction* instruction) { |
Vladimir Marko | ec32f64 | 2017-06-02 10:51:55 +0100 | [diff] [blame] | 954 | for (HEnvironment* env = instruction->GetEnvironment(); env != nullptr; env = env->GetParent()) { |
| 955 | env->AllocateLocations(); |
| 956 | } |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 957 | instruction->Accept(GetLocationBuilder()); |
Alexandre Rames | 88c13cd | 2015-04-14 17:35:39 +0100 | [diff] [blame] | 958 | DCHECK(CheckTypeConsistency(instruction)); |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 959 | LocationSummary* locations = instruction->GetLocations(); |
| 960 | if (!instruction->IsSuspendCheckEntry()) { |
Aart Bik | d1c4045 | 2016-03-02 16:06:13 -0800 | [diff] [blame] | 961 | if (locations != nullptr) { |
| 962 | if (locations->CanCall()) { |
| 963 | MarkNotLeaf(); |
| 964 | } else if (locations->Intrinsified() && |
| 965 | instruction->IsInvokeStaticOrDirect() && |
| 966 | !instruction->AsInvokeStaticOrDirect()->HasCurrentMethodInput()) { |
| 967 | // A static method call that has been fully intrinsified, and cannot call on the slow |
| 968 | // path or refer to the current method directly, no longer needs current method. |
| 969 | return; |
| 970 | } |
Nicolas Geoffray | c0572a4 | 2015-02-06 14:35:25 +0000 | [diff] [blame] | 971 | } |
| 972 | if (instruction->NeedsCurrentMethod()) { |
| 973 | SetRequiresCurrentMethod(); |
| 974 | } |
| 975 | } |
| 976 | } |
| 977 | |
Vladimir Marko | d58b837 | 2016-04-12 18:51:43 +0100 | [diff] [blame] | 978 | std::unique_ptr<CodeGenerator> CodeGenerator::Create(HGraph* graph, |
Vladimir Marko | d58b837 | 2016-04-12 18:51:43 +0100 | [diff] [blame] | 979 | const CompilerOptions& compiler_options, |
| 980 | OptimizingCompilerStats* stats) { |
Vladimir Marko | e764d2e | 2017-10-05 14:35:55 +0100 | [diff] [blame] | 981 | ArenaAllocator* allocator = graph->GetAllocator(); |
Vladimir Marko | a043111 | 2018-06-25 09:32:54 +0100 | [diff] [blame] | 982 | switch (compiler_options.GetInstructionSet()) { |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 983 | #ifdef ART_ENABLE_CODEGEN_arm |
Vladimir Marko | 33bff25 | 2017-11-01 14:35:42 +0000 | [diff] [blame] | 984 | case InstructionSet::kArm: |
| 985 | case InstructionSet::kThumb2: { |
Roland Levillain | 9983e30 | 2017-07-14 14:34:22 +0100 | [diff] [blame] | 986 | return std::unique_ptr<CodeGenerator>( |
Vladimir Marko | a043111 | 2018-06-25 09:32:54 +0100 | [diff] [blame] | 987 | new (allocator) arm::CodeGeneratorARMVIXL(graph, compiler_options, stats)); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 988 | } |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 989 | #endif |
| 990 | #ifdef ART_ENABLE_CODEGEN_arm64 |
Vladimir Marko | 33bff25 | 2017-11-01 14:35:42 +0000 | [diff] [blame] | 991 | case InstructionSet::kArm64: { |
Vladimir Marko | d58b837 | 2016-04-12 18:51:43 +0100 | [diff] [blame] | 992 | return std::unique_ptr<CodeGenerator>( |
Vladimir Marko | a043111 | 2018-06-25 09:32:54 +0100 | [diff] [blame] | 993 | new (allocator) arm64::CodeGeneratorARM64(graph, compiler_options, stats)); |
Alexandre Rames | 5319def | 2014-10-23 10:03:10 +0100 | [diff] [blame] | 994 | } |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 995 | #endif |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 996 | #ifdef ART_ENABLE_CODEGEN_x86 |
Vladimir Marko | 33bff25 | 2017-11-01 14:35:42 +0000 | [diff] [blame] | 997 | case InstructionSet::kX86: { |
Vladimir Marko | d58b837 | 2016-04-12 18:51:43 +0100 | [diff] [blame] | 998 | return std::unique_ptr<CodeGenerator>( |
Vladimir Marko | a043111 | 2018-06-25 09:32:54 +0100 | [diff] [blame] | 999 | new (allocator) x86::CodeGeneratorX86(graph, compiler_options, stats)); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 1000 | } |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 1001 | #endif |
| 1002 | #ifdef ART_ENABLE_CODEGEN_x86_64 |
Vladimir Marko | 33bff25 | 2017-11-01 14:35:42 +0000 | [diff] [blame] | 1003 | case InstructionSet::kX86_64: { |
Vladimir Marko | d58b837 | 2016-04-12 18:51:43 +0100 | [diff] [blame] | 1004 | return std::unique_ptr<CodeGenerator>( |
Vladimir Marko | a043111 | 2018-06-25 09:32:54 +0100 | [diff] [blame] | 1005 | new (allocator) x86_64::CodeGeneratorX86_64(graph, compiler_options, stats)); |
Dmitry Petrochenko | 6a58cb1 | 2014-04-02 17:27:59 +0700 | [diff] [blame] | 1006 | } |
Alex Light | 50fa993 | 2015-08-10 15:30:07 -0700 | [diff] [blame] | 1007 | #endif |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 1008 | default: |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 1009 | return nullptr; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 1010 | } |
| 1011 | } |
| 1012 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1013 | CodeGenerator::CodeGenerator(HGraph* graph, |
| 1014 | size_t number_of_core_registers, |
| 1015 | size_t number_of_fpu_registers, |
| 1016 | size_t number_of_register_pairs, |
| 1017 | uint32_t core_callee_save_mask, |
| 1018 | uint32_t fpu_callee_save_mask, |
| 1019 | const CompilerOptions& compiler_options, |
| 1020 | OptimizingCompilerStats* stats) |
| 1021 | : frame_size_(0), |
| 1022 | core_spill_mask_(0), |
| 1023 | fpu_spill_mask_(0), |
| 1024 | first_register_slot_in_slow_path_(0), |
| 1025 | allocated_registers_(RegisterSet::Empty()), |
| 1026 | blocked_core_registers_(graph->GetAllocator()->AllocArray<bool>(number_of_core_registers, |
| 1027 | kArenaAllocCodeGenerator)), |
| 1028 | blocked_fpu_registers_(graph->GetAllocator()->AllocArray<bool>(number_of_fpu_registers, |
| 1029 | kArenaAllocCodeGenerator)), |
| 1030 | number_of_core_registers_(number_of_core_registers), |
| 1031 | number_of_fpu_registers_(number_of_fpu_registers), |
| 1032 | number_of_register_pairs_(number_of_register_pairs), |
| 1033 | core_callee_save_mask_(core_callee_save_mask), |
| 1034 | fpu_callee_save_mask_(fpu_callee_save_mask), |
| 1035 | block_order_(nullptr), |
| 1036 | disasm_info_(nullptr), |
| 1037 | stats_(stats), |
| 1038 | graph_(graph), |
| 1039 | compiler_options_(compiler_options), |
| 1040 | current_slow_path_(nullptr), |
| 1041 | current_block_index_(0), |
| 1042 | is_leaf_(true), |
| 1043 | requires_current_method_(false), |
| 1044 | code_generation_data_() { |
Nicolas Geoffray | 57cacb7 | 2019-12-08 22:07:08 +0000 | [diff] [blame] | 1045 | if (GetGraph()->IsCompilingOsr()) { |
| 1046 | // Make OSR methods have all registers spilled, this simplifies the logic of |
| 1047 | // jumping to the compiled code directly. |
| 1048 | for (size_t i = 0; i < number_of_core_registers_; ++i) { |
| 1049 | if (IsCoreCalleeSaveRegister(i)) { |
| 1050 | AddAllocatedRegister(Location::RegisterLocation(i)); |
| 1051 | } |
| 1052 | } |
| 1053 | for (size_t i = 0; i < number_of_fpu_registers_; ++i) { |
| 1054 | if (IsFloatingPointCalleeSaveRegister(i)) { |
| 1055 | AddAllocatedRegister(Location::FpuRegisterLocation(i)); |
| 1056 | } |
| 1057 | } |
| 1058 | } |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1059 | } |
| 1060 | |
| 1061 | CodeGenerator::~CodeGenerator() {} |
| 1062 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1063 | size_t CodeGenerator::GetNumberOfJitRoots() const { |
| 1064 | DCHECK(code_generation_data_ != nullptr); |
| 1065 | return code_generation_data_->GetNumberOfJitRoots(); |
Nicolas Geoffray | d28b969 | 2015-11-04 14:36:55 +0000 | [diff] [blame] | 1066 | } |
| 1067 | |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1068 | static void CheckCovers(uint32_t dex_pc, |
| 1069 | const HGraph& graph, |
| 1070 | const CodeInfo& code_info, |
| 1071 | const ArenaVector<HSuspendCheck*>& loop_headers, |
| 1072 | ArenaVector<size_t>* covered) { |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1073 | for (size_t i = 0; i < loop_headers.size(); ++i) { |
| 1074 | if (loop_headers[i]->GetDexPc() == dex_pc) { |
| 1075 | if (graph.IsCompilingOsr()) { |
David Srbecky | 052f8ca | 2018-04-26 15:42:54 +0100 | [diff] [blame] | 1076 | DCHECK(code_info.GetOsrStackMapForDexPc(dex_pc).IsValid()); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1077 | } |
| 1078 | ++(*covered)[i]; |
| 1079 | } |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | // Debug helper to ensure loop entries in compiled code are matched by |
| 1084 | // dex branch instructions. |
| 1085 | static void CheckLoopEntriesCanBeUsedForOsr(const HGraph& graph, |
| 1086 | const CodeInfo& code_info, |
Andreas Gampe | 3f1dcd3 | 2018-12-28 09:39:56 -0800 | [diff] [blame] | 1087 | const dex::CodeItem& code_item) { |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1088 | if (graph.HasTryCatch()) { |
| 1089 | // One can write loops through try/catch, which we do not support for OSR anyway. |
| 1090 | return; |
| 1091 | } |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 1092 | ArenaVector<HSuspendCheck*> loop_headers(graph.GetAllocator()->Adapter(kArenaAllocMisc)); |
Vladimir Marko | 2c45bc9 | 2016-10-25 16:54:12 +0100 | [diff] [blame] | 1093 | for (HBasicBlock* block : graph.GetReversePostOrder()) { |
| 1094 | if (block->IsLoopHeader()) { |
| 1095 | HSuspendCheck* suspend_check = block->GetLoopInformation()->GetSuspendCheck(); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1096 | if (!suspend_check->GetEnvironment()->IsFromInlinedInvoke()) { |
| 1097 | loop_headers.push_back(suspend_check); |
| 1098 | } |
| 1099 | } |
| 1100 | } |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 1101 | ArenaVector<size_t> covered( |
| 1102 | loop_headers.size(), 0, graph.GetAllocator()->Adapter(kArenaAllocMisc)); |
Mathieu Chartier | 698ebbc | 2018-01-05 11:00:42 -0800 | [diff] [blame] | 1103 | for (const DexInstructionPcPair& pair : CodeItemInstructionAccessor(graph.GetDexFile(), |
Mathieu Chartier | 73f21d4 | 2018-01-02 14:26:50 -0800 | [diff] [blame] | 1104 | &code_item)) { |
Mathieu Chartier | 2b2bef2 | 2017-10-26 17:10:19 -0700 | [diff] [blame] | 1105 | const uint32_t dex_pc = pair.DexPc(); |
| 1106 | const Instruction& instruction = pair.Inst(); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1107 | if (instruction.IsBranch()) { |
| 1108 | uint32_t target = dex_pc + instruction.GetTargetOffset(); |
| 1109 | CheckCovers(target, graph, code_info, loop_headers, &covered); |
| 1110 | } else if (instruction.IsSwitch()) { |
David Brazdil | 86ea7ee | 2016-02-16 09:26:07 +0000 | [diff] [blame] | 1111 | DexSwitchTable table(instruction, dex_pc); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1112 | uint16_t num_entries = table.GetNumEntries(); |
| 1113 | size_t offset = table.GetFirstValueIndex(); |
| 1114 | |
| 1115 | // Use a larger loop counter type to avoid overflow issues. |
| 1116 | for (size_t i = 0; i < num_entries; ++i) { |
| 1117 | // The target of the case. |
| 1118 | uint32_t target = dex_pc + table.GetEntryAt(i + offset); |
| 1119 | CheckCovers(target, graph, code_info, loop_headers, &covered); |
| 1120 | } |
| 1121 | } |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | for (size_t i = 0; i < covered.size(); ++i) { |
| 1125 | DCHECK_NE(covered[i], 0u) << "Loop in compiled code has no dex branch equivalent"; |
| 1126 | } |
| 1127 | } |
| 1128 | |
Andreas Gampe | 3f1dcd3 | 2018-12-28 09:39:56 -0800 | [diff] [blame] | 1129 | ScopedArenaVector<uint8_t> CodeGenerator::BuildStackMaps(const dex::CodeItem* code_item) { |
David Srbecky | e7a9194 | 2018-08-01 17:23:53 +0100 | [diff] [blame] | 1130 | ScopedArenaVector<uint8_t> stack_map = GetStackMapStream()->Encode(); |
| 1131 | if (kIsDebugBuild && code_item != nullptr) { |
| 1132 | CheckLoopEntriesCanBeUsedForOsr(*graph_, CodeInfo(stack_map.data()), *code_item); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1133 | } |
David Srbecky | e7a9194 | 2018-08-01 17:23:53 +0100 | [diff] [blame] | 1134 | return stack_map; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1135 | } |
| 1136 | |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1137 | // Returns whether stackmap dex register info is needed for the instruction. |
| 1138 | // |
| 1139 | // The following cases mandate having a dex register map: |
| 1140 | // * Deoptimization |
| 1141 | // when we need to obtain the values to restore actual vregisters for interpreter. |
| 1142 | // * Debuggability |
| 1143 | // when we want to observe the values / asynchronously deoptimize. |
| 1144 | // * Monitor operations |
| 1145 | // to allow dumping in a stack trace locked dex registers for non-debuggable code. |
| 1146 | // * On-stack-replacement (OSR) |
| 1147 | // when entering compiled for OSR code from the interpreter we need to initialize the compiled |
| 1148 | // code values with the values from the vregisters. |
| 1149 | // * Method local catch blocks |
| 1150 | // a catch block must see the environment of the instruction from the same method that can |
| 1151 | // throw to this block. |
| 1152 | static bool NeedsVregInfo(HInstruction* instruction, bool osr) { |
| 1153 | HGraph* graph = instruction->GetBlock()->GetGraph(); |
| 1154 | return instruction->IsDeoptimize() || |
| 1155 | graph->IsDebuggable() || |
| 1156 | graph->HasMonitorOperations() || |
| 1157 | osr || |
| 1158 | instruction->CanThrowIntoCatchBlock(); |
| 1159 | } |
| 1160 | |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1161 | void CodeGenerator::RecordPcInfo(HInstruction* instruction, |
| 1162 | uint32_t dex_pc, |
David Srbecky | 50fac06 | 2018-06-13 18:55:35 +0100 | [diff] [blame] | 1163 | SlowPathCode* slow_path, |
| 1164 | bool native_debug_info) { |
Evgeny Astigeevich | 98416bf | 2019-09-09 14:52:12 +0100 | [diff] [blame] | 1165 | RecordPcInfo(instruction, dex_pc, GetAssembler()->CodePosition(), slow_path, native_debug_info); |
| 1166 | } |
| 1167 | |
| 1168 | void CodeGenerator::RecordPcInfo(HInstruction* instruction, |
| 1169 | uint32_t dex_pc, |
| 1170 | uint32_t native_pc, |
| 1171 | SlowPathCode* slow_path, |
| 1172 | bool native_debug_info) { |
Calin Juravle | d2ec87d | 2014-12-08 14:24:46 +0000 | [diff] [blame] | 1173 | if (instruction != nullptr) { |
Roland Levillain | 1693a1f | 2016-03-15 14:57:31 +0000 | [diff] [blame] | 1174 | // The code generated for some type conversions |
Alexey Frunze | 4dda337 | 2015-06-01 18:31:49 -0700 | [diff] [blame] | 1175 | // may call the runtime, thus normally requiring a subsequent |
| 1176 | // call to this method. However, the method verifier does not |
| 1177 | // produce PC information for certain instructions, which are |
| 1178 | // considered "atomic" (they cannot join a GC). |
Roland Levillain | 624279f | 2014-12-04 11:54:28 +0000 | [diff] [blame] | 1179 | // Therefore we do not currently record PC information for such |
| 1180 | // instructions. As this may change later, we added this special |
| 1181 | // case so that code generators may nevertheless call |
| 1182 | // CodeGenerator::RecordPcInfo without triggering an error in |
| 1183 | // CodeGenerator::BuildNativeGCMap ("Missing ref for dex pc 0x") |
| 1184 | // thereafter. |
Roland Levillain | 1693a1f | 2016-03-15 14:57:31 +0000 | [diff] [blame] | 1185 | if (instruction->IsTypeConversion()) { |
Calin Juravle | d2ec87d | 2014-12-08 14:24:46 +0000 | [diff] [blame] | 1186 | return; |
| 1187 | } |
| 1188 | if (instruction->IsRem()) { |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1189 | DataType::Type type = instruction->AsRem()->GetResultType(); |
| 1190 | if ((type == DataType::Type::kFloat32) || (type == DataType::Type::kFloat64)) { |
Calin Juravle | d2ec87d | 2014-12-08 14:24:46 +0000 | [diff] [blame] | 1191 | return; |
| 1192 | } |
| 1193 | } |
Roland Levillain | 624279f | 2014-12-04 11:54:28 +0000 | [diff] [blame] | 1194 | } |
| 1195 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1196 | StackMapStream* stack_map_stream = GetStackMapStream(); |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1197 | if (instruction == nullptr) { |
David Srbecky | c7098ff | 2016-02-09 14:30:11 +0000 | [diff] [blame] | 1198 | // For stack overflow checks and native-debug-info entries without dex register |
| 1199 | // mapping (i.e. start of basic block or start of slow path). |
David Srbecky | f6ba5b3 | 2018-06-23 22:05:49 +0100 | [diff] [blame] | 1200 | stack_map_stream->BeginStackMapEntry(dex_pc, native_pc); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1201 | stack_map_stream->EndStackMapEntry(); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1202 | return; |
| 1203 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1204 | |
Vladimir Marko | fec85cd | 2017-12-04 13:00:12 +0000 | [diff] [blame] | 1205 | LocationSummary* locations = instruction->GetLocations(); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1206 | uint32_t register_mask = locations->GetRegisterMask(); |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1207 | DCHECK_EQ(register_mask & ~locations->GetLiveRegisters()->GetCoreRegisters(), 0u); |
| 1208 | if (locations->OnlyCallsOnSlowPath()) { |
| 1209 | // In case of slow path, we currently set the location of caller-save registers |
| 1210 | // to register (instead of their stack location when pushed before the slow-path |
| 1211 | // call). Therefore register_mask contains both callee-save and caller-save |
| 1212 | // registers that hold objects. We must remove the spilled caller-save from the |
| 1213 | // mask, since they will be overwritten by the callee. |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1214 | uint32_t spills = GetSlowPathSpills(locations, /* core_registers= */ true); |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1215 | register_mask &= ~spills; |
Vladimir Marko | 952dbb1 | 2016-07-28 12:01:51 +0100 | [diff] [blame] | 1216 | } else { |
Vladimir Marko | 952dbb1 | 2016-07-28 12:01:51 +0100 | [diff] [blame] | 1217 | // The register mask must be a subset of callee-save registers. |
| 1218 | DCHECK_EQ(register_mask & core_callee_save_mask_, register_mask); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1219 | } |
Vladimir Marko | fec85cd | 2017-12-04 13:00:12 +0000 | [diff] [blame] | 1220 | |
| 1221 | uint32_t outer_dex_pc = dex_pc; |
| 1222 | uint32_t outer_environment_size = 0u; |
| 1223 | uint32_t inlining_depth = 0; |
| 1224 | HEnvironment* const environment = instruction->GetEnvironment(); |
| 1225 | if (environment != nullptr) { |
| 1226 | HEnvironment* outer_environment = environment; |
| 1227 | while (outer_environment->GetParent() != nullptr) { |
| 1228 | outer_environment = outer_environment->GetParent(); |
| 1229 | ++inlining_depth; |
| 1230 | } |
| 1231 | outer_dex_pc = outer_environment->GetDexPc(); |
| 1232 | outer_environment_size = outer_environment->Size(); |
| 1233 | } |
David Srbecky | 50fac06 | 2018-06-13 18:55:35 +0100 | [diff] [blame] | 1234 | |
| 1235 | HLoopInformation* info = instruction->GetBlock()->GetLoopInformation(); |
| 1236 | bool osr = |
| 1237 | instruction->IsSuspendCheck() && |
| 1238 | (info != nullptr) && |
| 1239 | graph_->IsCompilingOsr() && |
| 1240 | (inlining_depth == 0); |
| 1241 | StackMap::Kind kind = native_debug_info |
| 1242 | ? StackMap::Kind::Debug |
| 1243 | : (osr ? StackMap::Kind::OSR : StackMap::Kind::Default); |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1244 | bool needs_vreg_info = NeedsVregInfo(instruction, osr); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1245 | stack_map_stream->BeginStackMapEntry(outer_dex_pc, |
Vladimir Marko | bd8c725 | 2015-06-12 10:06:32 +0100 | [diff] [blame] | 1246 | native_pc, |
Calin Juravle | 4f46ac5 | 2015-04-23 18:47:21 +0100 | [diff] [blame] | 1247 | register_mask, |
| 1248 | locations->GetStackMask(), |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1249 | kind, |
| 1250 | needs_vreg_info); |
| 1251 | |
| 1252 | EmitEnvironment(environment, slow_path, needs_vreg_info); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1253 | stack_map_stream->EndStackMapEntry(); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1254 | |
David Srbecky | 50fac06 | 2018-06-13 18:55:35 +0100 | [diff] [blame] | 1255 | if (osr) { |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1256 | DCHECK_EQ(info->GetSuspendCheck(), instruction); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1257 | DCHECK(info->IsIrreducible()); |
Andreas Gampe | 875b4f2 | 2018-11-19 12:59:15 -0800 | [diff] [blame] | 1258 | DCHECK(environment != nullptr); |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1259 | if (kIsDebugBuild) { |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1260 | for (size_t i = 0, environment_size = environment->Size(); i < environment_size; ++i) { |
| 1261 | HInstruction* in_environment = environment->GetInstructionAt(i); |
| 1262 | if (in_environment != nullptr) { |
| 1263 | DCHECK(in_environment->IsPhi() || in_environment->IsConstant()); |
| 1264 | Location location = environment->GetLocationAt(i); |
| 1265 | DCHECK(location.IsStackSlot() || |
| 1266 | location.IsDoubleStackSlot() || |
| 1267 | location.IsConstant() || |
| 1268 | location.IsInvalid()); |
| 1269 | if (location.IsStackSlot() || location.IsDoubleStackSlot()) { |
| 1270 | DCHECK_LT(location.GetStackIndex(), static_cast<int32_t>(GetFrameSize())); |
| 1271 | } |
| 1272 | } |
| 1273 | } |
| 1274 | } |
Nicolas Geoffray | b331feb | 2016-02-05 16:51:53 +0000 | [diff] [blame] | 1275 | } |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1276 | } |
| 1277 | |
David Srbecky | b7070a2 | 2016-01-08 18:13:53 +0000 | [diff] [blame] | 1278 | bool CodeGenerator::HasStackMapAtCurrentPc() { |
| 1279 | uint32_t pc = GetAssembler()->CodeSize(); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1280 | StackMapStream* stack_map_stream = GetStackMapStream(); |
| 1281 | size_t count = stack_map_stream->GetNumberOfStackMaps(); |
Andreas Gampe | 0c95c12 | 2017-02-26 14:10:28 -0800 | [diff] [blame] | 1282 | if (count == 0) { |
| 1283 | return false; |
| 1284 | } |
David Srbecky | d02b23f | 2018-05-29 23:27:22 +0100 | [diff] [blame] | 1285 | return stack_map_stream->GetStackMapNativePcOffset(count - 1) == pc; |
David Srbecky | b7070a2 | 2016-01-08 18:13:53 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
David Srbecky | d28f4a0 | 2016-03-14 17:14:24 +0000 | [diff] [blame] | 1288 | void CodeGenerator::MaybeRecordNativeDebugInfo(HInstruction* instruction, |
| 1289 | uint32_t dex_pc, |
| 1290 | SlowPathCode* slow_path) { |
David Srbecky | c7098ff | 2016-02-09 14:30:11 +0000 | [diff] [blame] | 1291 | if (GetCompilerOptions().GetNativeDebuggable() && dex_pc != kNoDexPc) { |
| 1292 | if (HasStackMapAtCurrentPc()) { |
| 1293 | // Ensure that we do not collide with the stack map of the previous instruction. |
| 1294 | GenerateNop(); |
| 1295 | } |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1296 | RecordPcInfo(instruction, dex_pc, slow_path, /* native_debug_info= */ true); |
David Srbecky | c7098ff | 2016-02-09 14:30:11 +0000 | [diff] [blame] | 1297 | } |
| 1298 | } |
| 1299 | |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1300 | void CodeGenerator::RecordCatchBlockInfo() { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1301 | StackMapStream* stack_map_stream = GetStackMapStream(); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1302 | |
Vladimir Marko | fa6b93c | 2015-09-15 10:15:55 +0100 | [diff] [blame] | 1303 | for (HBasicBlock* block : *block_order_) { |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1304 | if (!block->IsCatchBlock()) { |
| 1305 | continue; |
| 1306 | } |
| 1307 | |
| 1308 | uint32_t dex_pc = block->GetDexPc(); |
| 1309 | uint32_t num_vregs = graph_->GetNumberOfVRegs(); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1310 | uint32_t native_pc = GetAddressOf(block); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1311 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1312 | stack_map_stream->BeginStackMapEntry(dex_pc, |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1313 | native_pc, |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1314 | /* register_mask= */ 0, |
| 1315 | /* sp_mask= */ nullptr, |
David Srbecky | 50fac06 | 2018-06-13 18:55:35 +0100 | [diff] [blame] | 1316 | StackMap::Kind::Catch); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1317 | |
| 1318 | HInstruction* current_phi = block->GetFirstPhi(); |
| 1319 | for (size_t vreg = 0; vreg < num_vregs; ++vreg) { |
David Srbecky | 50fac06 | 2018-06-13 18:55:35 +0100 | [diff] [blame] | 1320 | while (current_phi != nullptr && current_phi->AsPhi()->GetRegNumber() < vreg) { |
| 1321 | HInstruction* next_phi = current_phi->GetNext(); |
| 1322 | DCHECK(next_phi == nullptr || |
| 1323 | current_phi->AsPhi()->GetRegNumber() <= next_phi->AsPhi()->GetRegNumber()) |
| 1324 | << "Phis need to be sorted by vreg number to keep this a linear-time loop."; |
| 1325 | current_phi = next_phi; |
| 1326 | } |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1327 | |
| 1328 | if (current_phi == nullptr || current_phi->AsPhi()->GetRegNumber() != vreg) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1329 | stack_map_stream->AddDexRegisterEntry(DexRegisterLocation::Kind::kNone, 0); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1330 | } else { |
Vladimir Marko | bea75ff | 2017-10-11 20:39:54 +0100 | [diff] [blame] | 1331 | Location location = current_phi->GetLocations()->Out(); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1332 | switch (location.GetKind()) { |
| 1333 | case Location::kStackSlot: { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1334 | stack_map_stream->AddDexRegisterEntry( |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1335 | DexRegisterLocation::Kind::kInStack, location.GetStackIndex()); |
| 1336 | break; |
| 1337 | } |
| 1338 | case Location::kDoubleStackSlot: { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1339 | stack_map_stream->AddDexRegisterEntry( |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1340 | DexRegisterLocation::Kind::kInStack, location.GetStackIndex()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1341 | stack_map_stream->AddDexRegisterEntry( |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1342 | DexRegisterLocation::Kind::kInStack, location.GetHighStackIndex(kVRegSize)); |
| 1343 | ++vreg; |
| 1344 | DCHECK_LT(vreg, num_vregs); |
| 1345 | break; |
| 1346 | } |
| 1347 | default: { |
| 1348 | // All catch phis must be allocated to a stack slot. |
| 1349 | LOG(FATAL) << "Unexpected kind " << location.GetKind(); |
| 1350 | UNREACHABLE(); |
| 1351 | } |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1356 | stack_map_stream->EndStackMapEntry(); |
David Brazdil | 77a48ae | 2015-09-15 12:34:04 +0000 | [diff] [blame] | 1357 | } |
| 1358 | } |
| 1359 | |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1360 | void CodeGenerator::AddSlowPath(SlowPathCode* slow_path) { |
| 1361 | DCHECK(code_generation_data_ != nullptr); |
| 1362 | code_generation_data_->AddSlowPath(slow_path); |
| 1363 | } |
| 1364 | |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1365 | void CodeGenerator::EmitVRegInfo(HEnvironment* environment, SlowPathCode* slow_path) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1366 | StackMapStream* stack_map_stream = GetStackMapStream(); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1367 | // Walk over the environment, and record the location of dex registers. |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1368 | for (size_t i = 0, environment_size = environment->Size(); i < environment_size; ++i) { |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1369 | HInstruction* current = environment->GetInstructionAt(i); |
| 1370 | if (current == nullptr) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1371 | stack_map_stream->AddDexRegisterEntry(DexRegisterLocation::Kind::kNone, 0); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1372 | continue; |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1373 | } |
| 1374 | |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1375 | using Kind = DexRegisterLocation::Kind; |
Nicolas Geoffray | 0a23d74 | 2015-05-07 11:57:35 +0100 | [diff] [blame] | 1376 | Location location = environment->GetLocationAt(i); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1377 | switch (location.GetKind()) { |
| 1378 | case Location::kConstant: { |
| 1379 | DCHECK_EQ(current, location.GetConstant()); |
| 1380 | if (current->IsLongConstant()) { |
| 1381 | int64_t value = current->AsLongConstant()->GetValue(); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1382 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, Low32Bits(value)); |
| 1383 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, High32Bits(value)); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1384 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1385 | DCHECK_LT(i, environment_size); |
| 1386 | } else if (current->IsDoubleConstant()) { |
Roland Levillain | da4d79b | 2015-03-24 14:36:11 +0000 | [diff] [blame] | 1387 | int64_t value = bit_cast<int64_t, double>(current->AsDoubleConstant()->GetValue()); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1388 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, Low32Bits(value)); |
| 1389 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, High32Bits(value)); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1390 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1391 | DCHECK_LT(i, environment_size); |
| 1392 | } else if (current->IsIntConstant()) { |
| 1393 | int32_t value = current->AsIntConstant()->GetValue(); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1394 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, value); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1395 | } else if (current->IsNullConstant()) { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1396 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, 0); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1397 | } else { |
| 1398 | DCHECK(current->IsFloatConstant()) << current->DebugName(); |
Roland Levillain | da4d79b | 2015-03-24 14:36:11 +0000 | [diff] [blame] | 1399 | int32_t value = bit_cast<int32_t, float>(current->AsFloatConstant()->GetValue()); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1400 | stack_map_stream->AddDexRegisterEntry(Kind::kConstant, value); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1401 | } |
| 1402 | break; |
| 1403 | } |
| 1404 | |
| 1405 | case Location::kStackSlot: { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1406 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, location.GetStackIndex()); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1407 | break; |
| 1408 | } |
| 1409 | |
| 1410 | case Location::kDoubleStackSlot: { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1411 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, location.GetStackIndex()); |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1412 | stack_map_stream->AddDexRegisterEntry( |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1413 | Kind::kInStack, location.GetHighStackIndex(kVRegSize)); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1414 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1415 | DCHECK_LT(i, environment_size); |
| 1416 | break; |
| 1417 | } |
| 1418 | |
| 1419 | case Location::kRegister : { |
| 1420 | int id = location.reg(); |
| 1421 | if (slow_path != nullptr && slow_path->IsCoreRegisterSaved(id)) { |
| 1422 | uint32_t offset = slow_path->GetStackOffsetOfCoreRegister(id); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1423 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1424 | if (current->GetType() == DataType::Type::kInt64) { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1425 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset + kVRegSize); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1426 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1427 | DCHECK_LT(i, environment_size); |
| 1428 | } |
| 1429 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1430 | stack_map_stream->AddDexRegisterEntry(Kind::kInRegister, id); |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1431 | if (current->GetType() == DataType::Type::kInt64) { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1432 | stack_map_stream->AddDexRegisterEntry(Kind::kInRegisterHigh, id); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1433 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1434 | DCHECK_LT(i, environment_size); |
| 1435 | } |
| 1436 | } |
| 1437 | break; |
| 1438 | } |
| 1439 | |
| 1440 | case Location::kFpuRegister : { |
| 1441 | int id = location.reg(); |
| 1442 | if (slow_path != nullptr && slow_path->IsFpuRegisterSaved(id)) { |
| 1443 | uint32_t offset = slow_path->GetStackOffsetOfFpuRegister(id); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1444 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1445 | if (current->GetType() == DataType::Type::kFloat64) { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1446 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset + kVRegSize); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1447 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1448 | DCHECK_LT(i, environment_size); |
| 1449 | } |
| 1450 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1451 | stack_map_stream->AddDexRegisterEntry(Kind::kInFpuRegister, id); |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1452 | if (current->GetType() == DataType::Type::kFloat64) { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1453 | stack_map_stream->AddDexRegisterEntry(Kind::kInFpuRegisterHigh, id); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1454 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1455 | DCHECK_LT(i, environment_size); |
| 1456 | } |
| 1457 | } |
| 1458 | break; |
| 1459 | } |
| 1460 | |
| 1461 | case Location::kFpuRegisterPair : { |
| 1462 | int low = location.low(); |
| 1463 | int high = location.high(); |
| 1464 | if (slow_path != nullptr && slow_path->IsFpuRegisterSaved(low)) { |
| 1465 | uint32_t offset = slow_path->GetStackOffsetOfFpuRegister(low); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1466 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1467 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1468 | stack_map_stream->AddDexRegisterEntry(Kind::kInFpuRegister, low); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1469 | } |
| 1470 | if (slow_path != nullptr && slow_path->IsFpuRegisterSaved(high)) { |
| 1471 | uint32_t offset = slow_path->GetStackOffsetOfFpuRegister(high); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1472 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1473 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1474 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1475 | stack_map_stream->AddDexRegisterEntry(Kind::kInFpuRegister, high); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1476 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1477 | } |
| 1478 | DCHECK_LT(i, environment_size); |
| 1479 | break; |
| 1480 | } |
| 1481 | |
| 1482 | case Location::kRegisterPair : { |
| 1483 | int low = location.low(); |
| 1484 | int high = location.high(); |
| 1485 | if (slow_path != nullptr && slow_path->IsCoreRegisterSaved(low)) { |
| 1486 | uint32_t offset = slow_path->GetStackOffsetOfCoreRegister(low); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1487 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1488 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1489 | stack_map_stream->AddDexRegisterEntry(Kind::kInRegister, low); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1490 | } |
| 1491 | if (slow_path != nullptr && slow_path->IsCoreRegisterSaved(high)) { |
| 1492 | uint32_t offset = slow_path->GetStackOffsetOfCoreRegister(high); |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1493 | stack_map_stream->AddDexRegisterEntry(Kind::kInStack, offset); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1494 | } else { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1495 | stack_map_stream->AddDexRegisterEntry(Kind::kInRegister, high); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1496 | } |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1497 | ++i; |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1498 | DCHECK_LT(i, environment_size); |
| 1499 | break; |
| 1500 | } |
| 1501 | |
| 1502 | case Location::kInvalid: { |
David Srbecky | e140212 | 2018-06-13 18:20:45 +0100 | [diff] [blame] | 1503 | stack_map_stream->AddDexRegisterEntry(Kind::kNone, 0); |
Nicolas Geoffray | eeefa12 | 2015-03-13 18:52:59 +0000 | [diff] [blame] | 1504 | break; |
| 1505 | } |
| 1506 | |
| 1507 | default: |
| 1508 | LOG(FATAL) << "Unexpected kind " << location.GetKind(); |
| 1509 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1510 | } |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1511 | } |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1512 | |
Artem Serov | 2808be8 | 2018-12-20 19:15:11 +0000 | [diff] [blame] | 1513 | void CodeGenerator::EmitEnvironment(HEnvironment* environment, |
| 1514 | SlowPathCode* slow_path, |
| 1515 | bool needs_vreg_info) { |
| 1516 | if (environment == nullptr) return; |
| 1517 | |
| 1518 | StackMapStream* stack_map_stream = GetStackMapStream(); |
| 1519 | bool emit_inline_info = environment->GetParent() != nullptr; |
| 1520 | |
| 1521 | if (emit_inline_info) { |
| 1522 | // We emit the parent environment first. |
| 1523 | EmitEnvironment(environment->GetParent(), slow_path, needs_vreg_info); |
| 1524 | stack_map_stream->BeginInlineInfoEntry(environment->GetMethod(), |
| 1525 | environment->GetDexPc(), |
| 1526 | needs_vreg_info ? environment->Size() : 0, |
| 1527 | &graph_->GetDexFile()); |
| 1528 | } |
| 1529 | |
| 1530 | if (needs_vreg_info) { |
| 1531 | // If a dex register map is not required we just won't emit it. |
| 1532 | EmitVRegInfo(environment, slow_path); |
| 1533 | } |
| 1534 | |
| 1535 | if (emit_inline_info) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1536 | stack_map_stream->EndInlineInfoEntry(); |
Nicolas Geoffray | b1d0f3f | 2015-05-14 12:41:51 +0100 | [diff] [blame] | 1537 | } |
Nicolas Geoffray | 3946844 | 2014-09-02 15:17:15 +0100 | [diff] [blame] | 1538 | } |
| 1539 | |
Calin Juravle | 77520bc | 2015-01-12 18:45:46 +0000 | [diff] [blame] | 1540 | bool CodeGenerator::CanMoveNullCheckToUser(HNullCheck* null_check) { |
Nicolas Geoffray | 61ba8d2 | 2018-08-07 09:55:57 +0100 | [diff] [blame] | 1541 | return null_check->IsEmittedAtUseSite(); |
Calin Juravle | 77520bc | 2015-01-12 18:45:46 +0000 | [diff] [blame] | 1542 | } |
| 1543 | |
| 1544 | void CodeGenerator::MaybeRecordImplicitNullCheck(HInstruction* instr) { |
Nicolas Geoffray | 61ba8d2 | 2018-08-07 09:55:57 +0100 | [diff] [blame] | 1545 | HNullCheck* null_check = instr->GetImplicitNullCheck(); |
| 1546 | if (null_check != nullptr) { |
Evgeny Astigeevich | 98416bf | 2019-09-09 14:52:12 +0100 | [diff] [blame] | 1547 | RecordPcInfo(null_check, null_check->GetDexPc(), GetAssembler()->CodePosition()); |
Calin Juravle | 77520bc | 2015-01-12 18:45:46 +0000 | [diff] [blame] | 1548 | } |
| 1549 | } |
| 1550 | |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1551 | LocationSummary* CodeGenerator::CreateThrowingSlowPathLocations(HInstruction* instruction, |
| 1552 | RegisterSet caller_saves) { |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1553 | // Note: Using kNoCall allows the method to be treated as leaf (and eliminate the |
| 1554 | // HSuspendCheck from entry block). However, it will still get a valid stack frame |
| 1555 | // because the HNullCheck needs an environment. |
| 1556 | LocationSummary::CallKind call_kind = LocationSummary::kNoCall; |
| 1557 | // When throwing from a try block, we may need to retrieve dalvik registers from |
| 1558 | // physical registers and we also need to set up stack mask for GC. This is |
| 1559 | // implicitly achieved by passing kCallOnSlowPath to the LocationSummary. |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1560 | bool can_throw_into_catch_block = instruction->CanThrowIntoCatchBlock(); |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1561 | if (can_throw_into_catch_block) { |
| 1562 | call_kind = LocationSummary::kCallOnSlowPath; |
| 1563 | } |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 1564 | LocationSummary* locations = |
| 1565 | new (GetGraph()->GetAllocator()) LocationSummary(instruction, call_kind); |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1566 | if (can_throw_into_catch_block && compiler_options_.GetImplicitNullChecks()) { |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1567 | locations->SetCustomSlowPathCallerSaves(caller_saves); // Default: no caller-save registers. |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1568 | } |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1569 | DCHECK(!instruction->HasUses()); |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1570 | return locations; |
| 1571 | } |
| 1572 | |
Calin Juravle | 2ae4818 | 2016-03-16 14:05:09 +0000 | [diff] [blame] | 1573 | void CodeGenerator::GenerateNullCheck(HNullCheck* instruction) { |
Vladimir Marko | 3b7537b | 2016-09-13 11:56:01 +0000 | [diff] [blame] | 1574 | if (compiler_options_.GetImplicitNullChecks()) { |
Vladimir Marko | cd09e1f | 2017-11-24 15:02:40 +0000 | [diff] [blame] | 1575 | MaybeRecordStat(stats_, MethodCompilationStat::kImplicitNullCheckGenerated); |
Calin Juravle | 2ae4818 | 2016-03-16 14:05:09 +0000 | [diff] [blame] | 1576 | GenerateImplicitNullCheck(instruction); |
| 1577 | } else { |
Vladimir Marko | cd09e1f | 2017-11-24 15:02:40 +0000 | [diff] [blame] | 1578 | MaybeRecordStat(stats_, MethodCompilationStat::kExplicitNullCheckGenerated); |
Calin Juravle | 2ae4818 | 2016-03-16 14:05:09 +0000 | [diff] [blame] | 1579 | GenerateExplicitNullCheck(instruction); |
| 1580 | } |
| 1581 | } |
| 1582 | |
Vladimir Marko | bea75ff | 2017-10-11 20:39:54 +0100 | [diff] [blame] | 1583 | void CodeGenerator::ClearSpillSlotsFromLoopPhisInStackMap(HSuspendCheck* suspend_check, |
| 1584 | HParallelMove* spills) const { |
Nicolas Geoffray | 3c04974 | 2014-09-24 18:10:46 +0100 | [diff] [blame] | 1585 | LocationSummary* locations = suspend_check->GetLocations(); |
| 1586 | HBasicBlock* block = suspend_check->GetBlock(); |
| 1587 | DCHECK(block->GetLoopInformation()->GetSuspendCheck() == suspend_check); |
| 1588 | DCHECK(block->IsLoopHeader()); |
Vladimir Marko | bea75ff | 2017-10-11 20:39:54 +0100 | [diff] [blame] | 1589 | DCHECK(block->GetFirstInstruction() == spills); |
Nicolas Geoffray | 3c04974 | 2014-09-24 18:10:46 +0100 | [diff] [blame] | 1590 | |
Vladimir Marko | bea75ff | 2017-10-11 20:39:54 +0100 | [diff] [blame] | 1591 | for (size_t i = 0, num_moves = spills->NumMoves(); i != num_moves; ++i) { |
| 1592 | Location dest = spills->MoveOperandsAt(i)->GetDestination(); |
| 1593 | // All parallel moves in loop headers are spills. |
| 1594 | DCHECK(dest.IsStackSlot() || dest.IsDoubleStackSlot() || dest.IsSIMDStackSlot()) << dest; |
| 1595 | // Clear the stack bit marking a reference. Do not bother to check if the spill is |
| 1596 | // actually a reference spill, clearing bits that are already zero is harmless. |
| 1597 | locations->ClearStackBit(dest.GetStackIndex() / kVRegSize); |
Nicolas Geoffray | 3c04974 | 2014-09-24 18:10:46 +0100 | [diff] [blame] | 1598 | } |
| 1599 | } |
| 1600 | |
Nicolas Geoffray | 9021825 | 2015-04-15 11:56:51 +0100 | [diff] [blame] | 1601 | void CodeGenerator::EmitParallelMoves(Location from1, |
| 1602 | Location to1, |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1603 | DataType::Type type1, |
Nicolas Geoffray | 9021825 | 2015-04-15 11:56:51 +0100 | [diff] [blame] | 1604 | Location from2, |
| 1605 | Location to2, |
Vladimir Marko | 0ebe0d8 | 2017-09-21 22:50:39 +0100 | [diff] [blame] | 1606 | DataType::Type type2) { |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 1607 | HParallelMove parallel_move(GetGraph()->GetAllocator()); |
Nicolas Geoffray | 9021825 | 2015-04-15 11:56:51 +0100 | [diff] [blame] | 1608 | parallel_move.AddMove(from1, to1, type1, nullptr); |
| 1609 | parallel_move.AddMove(from2, to2, type2, nullptr); |
Nicolas Geoffray | f0e3937 | 2014-11-12 17:50:07 +0000 | [diff] [blame] | 1610 | GetMoveResolver()->EmitNativeCode(¶llel_move); |
| 1611 | } |
| 1612 | |
Alexandre Rames | 91a6516 | 2016-09-19 13:54:30 +0100 | [diff] [blame] | 1613 | void CodeGenerator::ValidateInvokeRuntime(QuickEntrypointEnum entrypoint, |
| 1614 | HInstruction* instruction, |
| 1615 | SlowPathCode* slow_path) { |
Alexandre Rames | 78e3ef6 | 2015-08-12 13:43:29 +0100 | [diff] [blame] | 1616 | // Ensure that the call kind indication given to the register allocator is |
Alexandre Rames | 91a6516 | 2016-09-19 13:54:30 +0100 | [diff] [blame] | 1617 | // coherent with the runtime call generated. |
Alexandre Rames | 78e3ef6 | 2015-08-12 13:43:29 +0100 | [diff] [blame] | 1618 | if (slow_path == nullptr) { |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 1619 | DCHECK(instruction->GetLocations()->WillCall()) |
| 1620 | << "instruction->DebugName()=" << instruction->DebugName(); |
Alexandre Rames | 78e3ef6 | 2015-08-12 13:43:29 +0100 | [diff] [blame] | 1621 | } else { |
Serban Constantinescu | 806f012 | 2016-03-09 11:10:16 +0000 | [diff] [blame] | 1622 | DCHECK(instruction->GetLocations()->CallsOnSlowPath() || slow_path->IsFatal()) |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 1623 | << "instruction->DebugName()=" << instruction->DebugName() |
| 1624 | << " slow_path->GetDescription()=" << slow_path->GetDescription(); |
Alexandre Rames | 91a6516 | 2016-09-19 13:54:30 +0100 | [diff] [blame] | 1625 | } |
| 1626 | |
| 1627 | // Check that the GC side effect is set when required. |
| 1628 | // TODO: Reverse EntrypointCanTriggerGC |
| 1629 | if (EntrypointCanTriggerGC(entrypoint)) { |
| 1630 | if (slow_path == nullptr) { |
| 1631 | DCHECK(instruction->GetSideEffects().Includes(SideEffects::CanTriggerGC())) |
| 1632 | << "instruction->DebugName()=" << instruction->DebugName() |
| 1633 | << " instruction->GetSideEffects().ToString()=" |
| 1634 | << instruction->GetSideEffects().ToString(); |
| 1635 | } else { |
Artem Serov | d1aa7d0 | 2018-06-22 11:35:46 +0100 | [diff] [blame] | 1636 | // 'CanTriggerGC' side effect is used to restrict optimization of instructions which depend |
| 1637 | // on GC (e.g. IntermediateAddress) - to ensure they are not alive across GC points. However |
| 1638 | // if execution never returns to the compiled code from a GC point this restriction is |
| 1639 | // unnecessary - in particular for fatal slow paths which might trigger GC. |
| 1640 | DCHECK((slow_path->IsFatal() && !instruction->GetLocations()->WillCall()) || |
| 1641 | instruction->GetSideEffects().Includes(SideEffects::CanTriggerGC()) || |
Alexandre Rames | 91a6516 | 2016-09-19 13:54:30 +0100 | [diff] [blame] | 1642 | // When (non-Baker) read barriers are enabled, some instructions |
| 1643 | // use a slow path to emit a read barrier, which does not trigger |
| 1644 | // GC. |
| 1645 | (kEmitCompilerReadBarrier && |
| 1646 | !kUseBakerReadBarrier && |
| 1647 | (instruction->IsInstanceFieldGet() || |
| 1648 | instruction->IsStaticFieldGet() || |
| 1649 | instruction->IsArrayGet() || |
| 1650 | instruction->IsLoadClass() || |
| 1651 | instruction->IsLoadString() || |
| 1652 | instruction->IsInstanceOf() || |
| 1653 | instruction->IsCheckCast() || |
| 1654 | (instruction->IsInvokeVirtual() && instruction->GetLocations()->Intrinsified())))) |
| 1655 | << "instruction->DebugName()=" << instruction->DebugName() |
| 1656 | << " instruction->GetSideEffects().ToString()=" |
| 1657 | << instruction->GetSideEffects().ToString() |
| 1658 | << " slow_path->GetDescription()=" << slow_path->GetDescription(); |
| 1659 | } |
| 1660 | } else { |
| 1661 | // The GC side effect is not required for the instruction. But the instruction might still have |
| 1662 | // it, for example if it calls other entrypoints requiring it. |
Alexandre Rames | 78e3ef6 | 2015-08-12 13:43:29 +0100 | [diff] [blame] | 1663 | } |
| 1664 | |
| 1665 | // Check the coherency of leaf information. |
| 1666 | DCHECK(instruction->IsSuspendCheck() |
| 1667 | || ((slow_path != nullptr) && slow_path->IsFatal()) |
| 1668 | || instruction->GetLocations()->CanCall() |
Roland Levillain | df3f822 | 2015-08-13 12:31:44 +0100 | [diff] [blame] | 1669 | || !IsLeafMethod()) |
| 1670 | << instruction->DebugName() << ((slow_path != nullptr) ? slow_path->GetDescription() : ""); |
Alexandre Rames | 78e3ef6 | 2015-08-12 13:43:29 +0100 | [diff] [blame] | 1671 | } |
| 1672 | |
Roland Levillain | dec8f63 | 2016-07-22 17:10:06 +0100 | [diff] [blame] | 1673 | void CodeGenerator::ValidateInvokeRuntimeWithoutRecordingPcInfo(HInstruction* instruction, |
| 1674 | SlowPathCode* slow_path) { |
| 1675 | DCHECK(instruction->GetLocations()->OnlyCallsOnSlowPath()) |
| 1676 | << "instruction->DebugName()=" << instruction->DebugName() |
| 1677 | << " slow_path->GetDescription()=" << slow_path->GetDescription(); |
| 1678 | // Only the Baker read barrier marking slow path used by certains |
| 1679 | // instructions is expected to invoke the runtime without recording |
| 1680 | // PC-related information. |
| 1681 | DCHECK(kUseBakerReadBarrier); |
| 1682 | DCHECK(instruction->IsInstanceFieldGet() || |
| 1683 | instruction->IsStaticFieldGet() || |
| 1684 | instruction->IsArrayGet() || |
Roland Levillain | 16d9f94 | 2016-08-25 17:27:56 +0100 | [diff] [blame] | 1685 | instruction->IsArraySet() || |
Roland Levillain | dec8f63 | 2016-07-22 17:10:06 +0100 | [diff] [blame] | 1686 | instruction->IsLoadClass() || |
| 1687 | instruction->IsLoadString() || |
| 1688 | instruction->IsInstanceOf() || |
| 1689 | instruction->IsCheckCast() || |
Roland Levillain | 0b671c0 | 2016-08-19 12:02:34 +0100 | [diff] [blame] | 1690 | (instruction->IsInvokeVirtual() && instruction->GetLocations()->Intrinsified()) || |
| 1691 | (instruction->IsInvokeStaticOrDirect() && instruction->GetLocations()->Intrinsified())) |
Roland Levillain | dec8f63 | 2016-07-22 17:10:06 +0100 | [diff] [blame] | 1692 | << "instruction->DebugName()=" << instruction->DebugName() |
| 1693 | << " slow_path->GetDescription()=" << slow_path->GetDescription(); |
| 1694 | } |
| 1695 | |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1696 | void SlowPathCode::SaveLiveRegisters(CodeGenerator* codegen, LocationSummary* locations) { |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1697 | size_t stack_offset = codegen->GetFirstRegisterSlotInSlowPath(); |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 1698 | |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1699 | const uint32_t core_spills = codegen->GetSlowPathSpills(locations, /* core_registers= */ true); |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1700 | for (uint32_t i : LowToHighBits(core_spills)) { |
| 1701 | // If the register holds an object, update the stack mask. |
| 1702 | if (locations->RegisterContainsObject(i)) { |
| 1703 | locations->SetStackBit(stack_offset / kVRegSize); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1704 | } |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1705 | DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| 1706 | DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| 1707 | saved_core_stack_offsets_[i] = stack_offset; |
| 1708 | stack_offset += codegen->SaveCoreRegister(stack_offset, i); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1709 | } |
| 1710 | |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1711 | const uint32_t fp_spills = codegen->GetSlowPathSpills(locations, /* core_registers= */ false); |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1712 | for (uint32_t i : LowToHighBits(fp_spills)) { |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1713 | DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| 1714 | DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| 1715 | saved_fpu_stack_offsets_[i] = stack_offset; |
| 1716 | stack_offset += codegen->SaveFloatingPointRegister(stack_offset, i); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1717 | } |
| 1718 | } |
| 1719 | |
| 1720 | void SlowPathCode::RestoreLiveRegisters(CodeGenerator* codegen, LocationSummary* locations) { |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1721 | size_t stack_offset = codegen->GetFirstRegisterSlotInSlowPath(); |
Roland Levillain | 0d5a281 | 2015-11-13 10:07:31 +0000 | [diff] [blame] | 1722 | |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1723 | const uint32_t core_spills = codegen->GetSlowPathSpills(locations, /* core_registers= */ true); |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1724 | for (uint32_t i : LowToHighBits(core_spills)) { |
| 1725 | DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| 1726 | DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| 1727 | stack_offset += codegen->RestoreCoreRegister(stack_offset, i); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1728 | } |
| 1729 | |
Andreas Gampe | 3db7068 | 2018-12-26 15:12:03 -0800 | [diff] [blame] | 1730 | const uint32_t fp_spills = codegen->GetSlowPathSpills(locations, /* core_registers= */ false); |
Vladimir Marko | 804b03f | 2016-09-14 16:26:36 +0100 | [diff] [blame] | 1731 | for (uint32_t i : LowToHighBits(fp_spills)) { |
Vladimir Marko | 70e9746 | 2016-08-09 11:04:26 +0100 | [diff] [blame] | 1732 | DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| 1733 | DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| 1734 | stack_offset += codegen->RestoreFloatingPointRegister(stack_offset, i); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 1735 | } |
| 1736 | } |
| 1737 | |
Nicolas Geoffray | 5bd05a5 | 2015-10-13 09:48:30 +0100 | [diff] [blame] | 1738 | void CodeGenerator::CreateSystemArrayCopyLocationSummary(HInvoke* invoke) { |
| 1739 | // Check to see if we have known failures that will cause us to have to bail out |
| 1740 | // to the runtime, and just generate the runtime call directly. |
| 1741 | HIntConstant* src_pos = invoke->InputAt(1)->AsIntConstant(); |
| 1742 | HIntConstant* dest_pos = invoke->InputAt(3)->AsIntConstant(); |
| 1743 | |
| 1744 | // The positions must be non-negative. |
| 1745 | if ((src_pos != nullptr && src_pos->GetValue() < 0) || |
| 1746 | (dest_pos != nullptr && dest_pos->GetValue() < 0)) { |
| 1747 | // We will have to fail anyways. |
| 1748 | return; |
| 1749 | } |
| 1750 | |
| 1751 | // The length must be >= 0. |
| 1752 | HIntConstant* length = invoke->InputAt(4)->AsIntConstant(); |
| 1753 | if (length != nullptr) { |
| 1754 | int32_t len = length->GetValue(); |
| 1755 | if (len < 0) { |
| 1756 | // Just call as normal. |
| 1757 | return; |
| 1758 | } |
| 1759 | } |
| 1760 | |
| 1761 | SystemArrayCopyOptimizations optimizations(invoke); |
| 1762 | |
| 1763 | if (optimizations.GetDestinationIsSource()) { |
| 1764 | if (src_pos != nullptr && dest_pos != nullptr && src_pos->GetValue() < dest_pos->GetValue()) { |
| 1765 | // We only support backward copying if source and destination are the same. |
| 1766 | return; |
| 1767 | } |
| 1768 | } |
| 1769 | |
| 1770 | if (optimizations.GetDestinationIsPrimitiveArray() || optimizations.GetSourceIsPrimitiveArray()) { |
| 1771 | // We currently don't intrinsify primitive copying. |
| 1772 | return; |
| 1773 | } |
| 1774 | |
Vladimir Marko | ca6fff8 | 2017-10-03 14:49:14 +0100 | [diff] [blame] | 1775 | ArenaAllocator* allocator = invoke->GetBlock()->GetGraph()->GetAllocator(); |
Nicolas Geoffray | 5bd05a5 | 2015-10-13 09:48:30 +0100 | [diff] [blame] | 1776 | LocationSummary* locations = new (allocator) LocationSummary(invoke, |
| 1777 | LocationSummary::kCallOnSlowPath, |
| 1778 | kIntrinsified); |
| 1779 | // arraycopy(Object src, int src_pos, Object dest, int dest_pos, int length). |
| 1780 | locations->SetInAt(0, Location::RequiresRegister()); |
| 1781 | locations->SetInAt(1, Location::RegisterOrConstant(invoke->InputAt(1))); |
| 1782 | locations->SetInAt(2, Location::RequiresRegister()); |
| 1783 | locations->SetInAt(3, Location::RegisterOrConstant(invoke->InputAt(3))); |
| 1784 | locations->SetInAt(4, Location::RegisterOrConstant(invoke->InputAt(4))); |
| 1785 | |
| 1786 | locations->AddTemp(Location::RequiresRegister()); |
| 1787 | locations->AddTemp(Location::RequiresRegister()); |
| 1788 | locations->AddTemp(Location::RequiresRegister()); |
| 1789 | } |
| 1790 | |
Nicolas Geoffray | 132d836 | 2016-11-16 09:19:42 +0000 | [diff] [blame] | 1791 | void CodeGenerator::EmitJitRoots(uint8_t* code, |
Vladimir Marko | ac3ac68 | 2018-09-20 11:01:43 +0100 | [diff] [blame] | 1792 | const uint8_t* roots_data, |
| 1793 | /*out*/std::vector<Handle<mirror::Object>>* roots) { |
Vladimir Marko | 174b2e2 | 2017-10-12 13:34:49 +0100 | [diff] [blame] | 1794 | code_generation_data_->EmitJitRoots(roots); |
Nicolas Geoffray | 132d836 | 2016-11-16 09:19:42 +0000 | [diff] [blame] | 1795 | EmitJitRootPatches(code, roots_data); |
| 1796 | } |
| 1797 | |
Vladimir Marko | b546163 | 2018-10-15 14:24:21 +0100 | [diff] [blame] | 1798 | QuickEntrypointEnum CodeGenerator::GetArrayAllocationEntrypoint(HNewArray* new_array) { |
| 1799 | switch (new_array->GetComponentSizeShift()) { |
| 1800 | case 0: return kQuickAllocArrayResolved8; |
| 1801 | case 1: return kQuickAllocArrayResolved16; |
| 1802 | case 2: return kQuickAllocArrayResolved32; |
| 1803 | case 3: return kQuickAllocArrayResolved64; |
Nicolas Geoffray | b048cb7 | 2017-01-23 22:50:24 +0000 | [diff] [blame] | 1804 | } |
| 1805 | LOG(FATAL) << "Unreachable"; |
Elliott Hughes | c1896c9 | 2018-11-29 11:33:18 -0800 | [diff] [blame] | 1806 | UNREACHABLE(); |
Nicolas Geoffray | b048cb7 | 2017-01-23 22:50:24 +0000 | [diff] [blame] | 1807 | } |
| 1808 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 1809 | } // namespace art |