| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <algorithm> |
| #include "base/macros.h" |
| #include "base/mutex.h" |
| #include "base/mutex-inl.h" |
| #include "locks.h" |
| #include "thread.h" |
| #include "thread-inl.h" |
| #include "dex/mir_graph.h" |
| #include "dex_instruction.h" |
| #include "dex_instruction-inl.h" |
| |
| #include "dex_file_method_inliner.h" |
| |
| namespace art { |
| |
| const uint32_t DexFileMethodInliner::kIndexUnresolved; |
| const char* const DexFileMethodInliner::kClassCacheNames[] = { |
| "Z", // kClassCacheBoolean |
| "B", // kClassCacheByte |
| "C", // kClassCacheChar |
| "S", // kClassCacheShort |
| "I", // kClassCacheInt |
| "J", // kClassCacheLong |
| "F", // kClassCacheFloat |
| "D", // kClassCacheDouble |
| "V", // kClassCacheVoid |
| "Ljava/lang/Object;", // kClassCacheJavaLangObject |
| "Ljava/lang/String;", // kClassCacheJavaLangString |
| "Ljava/lang/Double;", // kClassCacheJavaLangDouble |
| "Ljava/lang/Float;", // kClassCacheJavaLangFloat |
| "Ljava/lang/Integer;", // kClassCacheJavaLangInteger |
| "Ljava/lang/Long;", // kClassCacheJavaLangLong |
| "Ljava/lang/Short;", // kClassCacheJavaLangShort |
| "Ljava/lang/Math;", // kClassCacheJavaLangMath |
| "Ljava/lang/StrictMath;", // kClassCacheJavaLangStrictMath |
| "Ljava/lang/Thread;", // kClassCacheJavaLangThread |
| "Llibcore/io/Memory;", // kClassCacheLibcoreIoMemory |
| "Lsun/misc/Unsafe;", // kClassCacheSunMiscUnsafe |
| }; |
| |
| const char* const DexFileMethodInliner::kNameCacheNames[] = { |
| "reverseBytes", // kNameCacheReverseBytes |
| "doubleToRawLongBits", // kNameCacheDoubleToRawLongBits |
| "longBitsToDouble", // kNameCacheLongBitsToDouble |
| "floatToRawIntBits", // kNameCacheFloatToRawIntBits |
| "intBitsToFloat", // kNameCacheIntBitsToFloat |
| "abs", // kNameCacheAbs |
| "max", // kNameCacheMax |
| "min", // kNameCacheMin |
| "sqrt", // kNameCacheSqrt |
| "charAt", // kNameCacheCharAt |
| "compareTo", // kNameCacheCompareTo |
| "isEmpty", // kNameCacheIsEmpty |
| "indexOf", // kNameCacheIndexOf |
| "length", // kNameCacheLength |
| "currentThread", // kNameCacheCurrentThread |
| "peekByte", // kNameCachePeekByte |
| "peekIntNative", // kNameCachePeekIntNative |
| "peekLongNative", // kNameCachePeekLongNative |
| "peekShortNative", // kNameCachePeekShortNative |
| "pokeByte", // kNameCachePokeByte |
| "pokeIntNative", // kNameCachePokeIntNative |
| "pokeLongNative", // kNameCachePokeLongNative |
| "pokeShortNative", // kNameCachePokeShortNative |
| "compareAndSwapInt", // kNameCacheCompareAndSwapInt |
| "compareAndSwapLong", // kNameCacheCompareAndSwapLong |
| "compareAndSwapObject", // kNameCacheCompareAndSwapObject |
| "getInt", // kNameCacheGetInt |
| "getIntVolatile", // kNameCacheGetIntVolatile |
| "putInt", // kNameCachePutInt |
| "putIntVolatile", // kNameCachePutIntVolatile |
| "putOrderedInt", // kNameCachePutOrderedInt |
| "getLong", // kNameCacheGetLong |
| "getLongVolatile", // kNameCacheGetLongVolatile |
| "putLong", // kNameCachePutLong |
| "putLongVolatile", // kNameCachePutLongVolatile |
| "putOrderedLong", // kNameCachePutOrderedLong |
| "getObject", // kNameCacheGetObject |
| "getObjectVolatile", // kNameCacheGetObjectVolatile |
| "putObject", // kNameCachePutObject |
| "putObjectVolatile", // kNameCachePutObjectVolatile |
| "putOrderedObject", // kNameCachePutOrderedObject |
| }; |
| |
| const DexFileMethodInliner::ProtoDef DexFileMethodInliner::kProtoCacheDefs[] = { |
| // kProtoCacheI_I |
| { kClassCacheInt, 1, { kClassCacheInt } }, |
| // kProtoCacheJ_J |
| { kClassCacheLong, 1, { kClassCacheLong } }, |
| // kProtoCacheS_S |
| { kClassCacheShort, 1, { kClassCacheShort } }, |
| // kProtoCacheD_D |
| { kClassCacheDouble, 1, { kClassCacheDouble } }, |
| // kProtoCacheD_J |
| { kClassCacheLong, 1, { kClassCacheDouble } }, |
| // kProtoCacheJ_D |
| { kClassCacheDouble, 1, { kClassCacheLong } }, |
| // kProtoCacheF_I |
| { kClassCacheInt, 1, { kClassCacheFloat } }, |
| // kProtoCacheI_F |
| { kClassCacheFloat, 1, { kClassCacheInt } }, |
| // kProtoCacheII_I |
| { kClassCacheInt, 2, { kClassCacheInt, kClassCacheInt } }, |
| // kProtoCacheI_C |
| { kClassCacheChar, 1, { kClassCacheInt } }, |
| // kProtoCacheString_I |
| { kClassCacheInt, 1, { kClassCacheJavaLangString } }, |
| // kProtoCache_Z |
| { kClassCacheBoolean, 0, { } }, |
| // kProtoCache_I |
| { kClassCacheInt, 0, { } }, |
| // kProtoCache_Thread |
| { kClassCacheJavaLangThread, 0, { } }, |
| // kProtoCacheJ_B |
| { kClassCacheByte, 1, { kClassCacheLong } }, |
| // kProtoCacheJ_I |
| { kClassCacheInt, 1, { kClassCacheLong } }, |
| // kProtoCacheJ_S |
| { kClassCacheShort, 1, { kClassCacheLong } }, |
| // kProtoCacheJB_V |
| { kClassCacheVoid, 2, { kClassCacheLong, kClassCacheByte } }, |
| // kProtoCacheJI_V |
| { kClassCacheVoid, 2, { kClassCacheLong, kClassCacheInt } }, |
| // kProtoCacheJJ_V |
| { kClassCacheVoid, 2, { kClassCacheLong, kClassCacheLong } }, |
| // kProtoCacheJS_V |
| { kClassCacheVoid, 2, { kClassCacheLong, kClassCacheShort } }, |
| // kProtoCacheObjectJII_Z |
| { kClassCacheBoolean, 4, { kClassCacheJavaLangObject, kClassCacheLong, |
| kClassCacheInt, kClassCacheInt } }, |
| // kProtoCacheObjectJJJ_Z |
| { kClassCacheBoolean, 4, { kClassCacheJavaLangObject, kClassCacheLong, |
| kClassCacheLong, kClassCacheLong } }, |
| // kProtoCacheObjectJObjectObject_Z |
| { kClassCacheBoolean, 4, { kClassCacheJavaLangObject, kClassCacheLong, |
| kClassCacheJavaLangObject, kClassCacheJavaLangObject } }, |
| // kProtoCacheObjectJ_I |
| { kClassCacheInt, 2, { kClassCacheJavaLangObject, kClassCacheLong } }, |
| // kProtoCacheObjectJI_V |
| { kClassCacheVoid, 3, { kClassCacheJavaLangObject, kClassCacheLong, kClassCacheInt } }, |
| // kProtoCacheObjectJ_J |
| { kClassCacheLong, 2, { kClassCacheJavaLangObject, kClassCacheLong } }, |
| // kProtoCacheObjectJJ_V |
| { kClassCacheVoid, 3, { kClassCacheJavaLangObject, kClassCacheLong, kClassCacheLong } }, |
| // kProtoCacheObjectJ_Object |
| { kClassCacheJavaLangObject, 2, { kClassCacheJavaLangObject, kClassCacheLong } }, |
| // kProtoCacheObjectJObject_V |
| { kClassCacheVoid, 3, { kClassCacheJavaLangObject, kClassCacheLong, |
| kClassCacheJavaLangObject } }, |
| }; |
| |
| const DexFileMethodInliner::IntrinsicDef DexFileMethodInliner::kIntrinsicMethods[] = { |
| #define INTRINSIC(c, n, p, o, d) \ |
| { { kClassCache ## c, kNameCache ## n, kProtoCache ## p }, { o, kInlineIntrinsic, d } } |
| |
| INTRINSIC(JavaLangDouble, DoubleToRawLongBits, D_J, kIntrinsicDoubleCvt, 0), |
| INTRINSIC(JavaLangDouble, LongBitsToDouble, J_D, kIntrinsicDoubleCvt, 0), |
| INTRINSIC(JavaLangFloat, FloatToRawIntBits, F_I, kIntrinsicFloatCvt, 0), |
| INTRINSIC(JavaLangFloat, IntBitsToFloat, I_F, kIntrinsicFloatCvt, 0), |
| |
| INTRINSIC(JavaLangInteger, ReverseBytes, I_I, kIntrinsicReverseBytes, kWord), |
| INTRINSIC(JavaLangLong, ReverseBytes, J_J, kIntrinsicReverseBytes, kLong), |
| INTRINSIC(JavaLangShort, ReverseBytes, S_S, kIntrinsicReverseBytes, kSignedHalf), |
| |
| INTRINSIC(JavaLangMath, Abs, I_I, kIntrinsicAbsInt, 0), |
| INTRINSIC(JavaLangStrictMath, Abs, I_I, kIntrinsicAbsInt, 0), |
| INTRINSIC(JavaLangMath, Abs, J_J, kIntrinsicAbsLong, 0), |
| INTRINSIC(JavaLangStrictMath, Abs, J_J, kIntrinsicAbsLong, 0), |
| INTRINSIC(JavaLangMath, Min, II_I, kIntrinsicMinMaxInt, kIntrinsicFlagMin), |
| INTRINSIC(JavaLangStrictMath, Min, II_I, kIntrinsicMinMaxInt, kIntrinsicFlagMin), |
| INTRINSIC(JavaLangMath, Max, II_I, kIntrinsicMinMaxInt, kIntrinsicFlagMax), |
| INTRINSIC(JavaLangStrictMath, Max, II_I, kIntrinsicMinMaxInt, kIntrinsicFlagMax), |
| INTRINSIC(JavaLangMath, Sqrt, D_D, kIntrinsicSqrt, 0), |
| INTRINSIC(JavaLangStrictMath, Sqrt, D_D, kIntrinsicSqrt, 0), |
| |
| INTRINSIC(JavaLangString, CharAt, I_C, kIntrinsicCharAt, 0), |
| INTRINSIC(JavaLangString, CompareTo, String_I, kIntrinsicCompareTo, 0), |
| INTRINSIC(JavaLangString, IsEmpty, _Z, kIntrinsicIsEmptyOrLength, kIntrinsicFlagIsEmpty), |
| INTRINSIC(JavaLangString, IndexOf, II_I, kIntrinsicIndexOf, kIntrinsicFlagNone), |
| INTRINSIC(JavaLangString, IndexOf, I_I, kIntrinsicIndexOf, kIntrinsicFlagBase0), |
| INTRINSIC(JavaLangString, Length, _I, kIntrinsicIsEmptyOrLength, kIntrinsicFlagLength), |
| |
| INTRINSIC(JavaLangThread, CurrentThread, _Thread, kIntrinsicCurrentThread, 0), |
| |
| INTRINSIC(LibcoreIoMemory, PeekByte, J_B, kIntrinsicPeek, kSignedByte), |
| INTRINSIC(LibcoreIoMemory, PeekIntNative, J_I, kIntrinsicPeek, kWord), |
| INTRINSIC(LibcoreIoMemory, PeekLongNative, J_J, kIntrinsicPeek, kLong), |
| INTRINSIC(LibcoreIoMemory, PeekShortNative, J_S, kIntrinsicPeek, kSignedHalf), |
| INTRINSIC(LibcoreIoMemory, PokeByte, JB_V, kIntrinsicPoke, kSignedByte), |
| INTRINSIC(LibcoreIoMemory, PokeIntNative, JI_V, kIntrinsicPoke, kWord), |
| INTRINSIC(LibcoreIoMemory, PokeLongNative, JJ_V, kIntrinsicPoke, kLong), |
| INTRINSIC(LibcoreIoMemory, PokeShortNative, JS_V, kIntrinsicPoke, kSignedHalf), |
| |
| INTRINSIC(SunMiscUnsafe, CompareAndSwapInt, ObjectJII_Z, kIntrinsicCas, |
| kIntrinsicFlagNone), |
| INTRINSIC(SunMiscUnsafe, CompareAndSwapLong, ObjectJJJ_Z, kIntrinsicCas, |
| kIntrinsicFlagIsLong), |
| INTRINSIC(SunMiscUnsafe, CompareAndSwapObject, ObjectJObjectObject_Z, kIntrinsicCas, |
| kIntrinsicFlagIsObject), |
| |
| #define UNSAFE_GET_PUT(type, code, type_flags) \ |
| INTRINSIC(SunMiscUnsafe, Get ## type, ObjectJ_ ## code, kIntrinsicUnsafeGet, \ |
| type_flags & ~kIntrinsicFlagIsObject), \ |
| INTRINSIC(SunMiscUnsafe, Get ## type ## Volatile, ObjectJ_ ## code, kIntrinsicUnsafeGet, \ |
| (type_flags | kIntrinsicFlagIsVolatile) & ~kIntrinsicFlagIsObject), \ |
| INTRINSIC(SunMiscUnsafe, Put ## type, ObjectJ ## code ## _V, kIntrinsicUnsafePut, \ |
| type_flags), \ |
| INTRINSIC(SunMiscUnsafe, Put ## type ## Volatile, ObjectJ ## code ## _V, kIntrinsicUnsafePut, \ |
| type_flags | kIntrinsicFlagIsVolatile), \ |
| INTRINSIC(SunMiscUnsafe, PutOrdered ## type, ObjectJ ## code ## _V, kIntrinsicUnsafePut, \ |
| type_flags | kIntrinsicFlagIsOrdered) |
| |
| UNSAFE_GET_PUT(Int, I, kIntrinsicFlagNone), |
| UNSAFE_GET_PUT(Long, J, kIntrinsicFlagIsLong), |
| UNSAFE_GET_PUT(Object, Object, kIntrinsicFlagIsObject), |
| #undef UNSAFE_GET_PUT |
| |
| #undef INTRINSIC |
| }; |
| |
| DexFileMethodInliner::DexFileMethodInliner() |
| : lock_("DexFileMethodInliner lock", kDexFileMethodInlinerLock), |
| dex_file_(NULL) { |
| COMPILE_ASSERT(kClassCacheFirst == 0, kClassCacheFirst_not_0); |
| COMPILE_ASSERT(arraysize(kClassCacheNames) == kClassCacheLast, bad_arraysize_kClassCacheNames); |
| COMPILE_ASSERT(kNameCacheFirst == 0, kNameCacheFirst_not_0); |
| COMPILE_ASSERT(arraysize(kNameCacheNames) == kNameCacheLast, bad_arraysize_kNameCacheNames); |
| COMPILE_ASSERT(kProtoCacheFirst == 0, kProtoCacheFirst_not_0); |
| COMPILE_ASSERT(arraysize(kProtoCacheDefs) == kProtoCacheLast, bad_arraysize_kProtoCacheNames); |
| } |
| |
| DexFileMethodInliner::~DexFileMethodInliner() { |
| } |
| |
| bool DexFileMethodInliner::AnalyseMethodCode(uint32_t method_idx, |
| const DexFile::CodeItem* code_item) { |
| // We currently support only plain return or 2-instruction methods. |
| |
| DCHECK_NE(code_item->insns_size_in_code_units_, 0u); |
| const Instruction* instruction = Instruction::At(code_item->insns_); |
| Instruction::Code opcode = instruction->Opcode(); |
| |
| switch (opcode) { |
| case Instruction::RETURN_VOID: |
| return AddInlineMethod(method_idx, kInlineOpNop, kInlineSpecial, 0); |
| case Instruction::RETURN: |
| case Instruction::RETURN_OBJECT: |
| return AnalyseReturnMethod(method_idx, code_item, kWord); |
| case Instruction::RETURN_WIDE: |
| return AnalyseReturnMethod(method_idx, code_item, kLong); |
| case Instruction::CONST: |
| case Instruction::CONST_4: |
| case Instruction::CONST_16: |
| case Instruction::CONST_HIGH16: |
| // TODO: Support wide constants (RETURN_WIDE). |
| return AnalyseConstMethod(method_idx, code_item); |
| case Instruction::IGET: |
| return AnalyseIGetMethod(method_idx, code_item, kWord, false); |
| case Instruction::IGET_OBJECT: |
| return AnalyseIGetMethod(method_idx, code_item, kWord, true); |
| case Instruction::IGET_BOOLEAN: |
| case Instruction::IGET_BYTE: |
| return AnalyseIGetMethod(method_idx, code_item, kSignedByte, false); |
| case Instruction::IGET_CHAR: |
| return AnalyseIGetMethod(method_idx, code_item, kUnsignedHalf, false); |
| case Instruction::IGET_SHORT: |
| return AnalyseIGetMethod(method_idx, code_item, kSignedHalf, false); |
| case Instruction::IGET_WIDE: |
| return AnalyseIGetMethod(method_idx, code_item, kLong, false); |
| case Instruction::IPUT: |
| return AnalyseIPutMethod(method_idx, code_item, kWord, false); |
| case Instruction::IPUT_OBJECT: |
| return AnalyseIPutMethod(method_idx, code_item, kWord, true); |
| case Instruction::IPUT_BOOLEAN: |
| case Instruction::IPUT_BYTE: |
| return AnalyseIPutMethod(method_idx, code_item, kSignedByte, false); |
| case Instruction::IPUT_CHAR: |
| return AnalyseIPutMethod(method_idx, code_item, kUnsignedHalf, false); |
| case Instruction::IPUT_SHORT: |
| return AnalyseIPutMethod(method_idx, code_item, kSignedHalf, false); |
| case Instruction::IPUT_WIDE: |
| return AnalyseIPutMethod(method_idx, code_item, kLong, false); |
| default: |
| return false; |
| } |
| } |
| |
| bool DexFileMethodInliner::IsIntrinsic(uint32_t method_index) { |
| ReaderMutexLock mu(Thread::Current(), lock_); |
| auto it = inline_methods_.find(method_index); |
| return it != inline_methods_.end() && (it->second.flags & kInlineIntrinsic) != 0; |
| } |
| |
| bool DexFileMethodInliner::GenIntrinsic(Mir2Lir* backend, CallInfo* info) { |
| InlineMethod intrinsic; |
| { |
| ReaderMutexLock mu(Thread::Current(), lock_); |
| auto it = inline_methods_.find(info->index); |
| if (it == inline_methods_.end() || (it->second.flags & kInlineIntrinsic) == 0) { |
| return false; |
| } |
| intrinsic = it->second; |
| } |
| switch (intrinsic.opcode) { |
| case kIntrinsicDoubleCvt: |
| return backend->GenInlinedDoubleCvt(info); |
| case kIntrinsicFloatCvt: |
| return backend->GenInlinedFloatCvt(info); |
| case kIntrinsicReverseBytes: |
| return backend->GenInlinedReverseBytes(info, static_cast<OpSize>(intrinsic.data)); |
| case kIntrinsicAbsInt: |
| return backend->GenInlinedAbsInt(info); |
| case kIntrinsicAbsLong: |
| return backend->GenInlinedAbsLong(info); |
| case kIntrinsicMinMaxInt: |
| return backend->GenInlinedMinMaxInt(info, intrinsic.data & kIntrinsicFlagMin); |
| case kIntrinsicSqrt: |
| return backend->GenInlinedSqrt(info); |
| case kIntrinsicCharAt: |
| return backend->GenInlinedCharAt(info); |
| case kIntrinsicCompareTo: |
| return backend->GenInlinedStringCompareTo(info); |
| case kIntrinsicIsEmptyOrLength: |
| return backend->GenInlinedStringIsEmptyOrLength(info, intrinsic.data & kIntrinsicFlagIsEmpty); |
| case kIntrinsicIndexOf: |
| return backend->GenInlinedIndexOf(info, intrinsic.data & kIntrinsicFlagBase0); |
| case kIntrinsicCurrentThread: |
| return backend->GenInlinedCurrentThread(info); |
| case kIntrinsicPeek: |
| return backend->GenInlinedPeek(info, static_cast<OpSize>(intrinsic.data)); |
| case kIntrinsicPoke: |
| return backend->GenInlinedPoke(info, static_cast<OpSize>(intrinsic.data)); |
| case kIntrinsicCas: |
| return backend->GenInlinedCas(info, intrinsic.data & kIntrinsicFlagIsLong, |
| intrinsic.data & kIntrinsicFlagIsObject); |
| case kIntrinsicUnsafeGet: |
| return backend->GenInlinedUnsafeGet(info, intrinsic.data & kIntrinsicFlagIsLong, |
| intrinsic.data & kIntrinsicFlagIsVolatile); |
| case kIntrinsicUnsafePut: |
| return backend->GenInlinedUnsafePut(info, intrinsic.data & kIntrinsicFlagIsLong, |
| intrinsic.data & kIntrinsicFlagIsObject, |
| intrinsic.data & kIntrinsicFlagIsVolatile, |
| intrinsic.data & kIntrinsicFlagIsOrdered); |
| default: |
| LOG(FATAL) << "Unexpected intrinsic opcode: " << intrinsic.opcode; |
| return false; // avoid warning "control reaches end of non-void function" |
| } |
| } |
| |
| bool DexFileMethodInliner::IsSpecial(uint32_t method_index) { |
| ReaderMutexLock mu(Thread::Current(), lock_); |
| auto it = inline_methods_.find(method_index); |
| return it != inline_methods_.end() && (it->second.flags & kInlineSpecial) != 0; |
| } |
| |
| bool DexFileMethodInliner::GenSpecial(Mir2Lir* backend, uint32_t method_idx) { |
| InlineMethod special; |
| { |
| ReaderMutexLock mu(Thread::Current(), lock_); |
| auto it = inline_methods_.find(method_idx); |
| if (it == inline_methods_.end() || (it->second.flags & kInlineSpecial) == 0) { |
| return false; |
| } |
| special = it->second; |
| } |
| // TODO: Return true only if special implementation is emitted. |
| backend->SpecialMIR2LIR(special); |
| return true; |
| } |
| |
| uint32_t DexFileMethodInliner::FindClassIndex(const DexFile* dex_file, IndexCache* cache, |
| ClassCacheIndex index) { |
| uint32_t* class_index = &cache->class_indexes[index]; |
| if (*class_index != kIndexUnresolved) { |
| return *class_index; |
| } |
| |
| const DexFile::StringId* string_id = dex_file->FindStringId(kClassCacheNames[index]); |
| if (string_id == nullptr) { |
| *class_index = kIndexNotFound; |
| return *class_index; |
| } |
| uint32_t string_index = dex_file->GetIndexForStringId(*string_id); |
| |
| const DexFile::TypeId* type_id = dex_file->FindTypeId(string_index); |
| if (type_id == nullptr) { |
| *class_index = kIndexNotFound; |
| return *class_index; |
| } |
| *class_index = dex_file->GetIndexForTypeId(*type_id); |
| return *class_index; |
| } |
| |
| uint32_t DexFileMethodInliner::FindNameIndex(const DexFile* dex_file, IndexCache* cache, |
| NameCacheIndex index) { |
| uint32_t* name_index = &cache->name_indexes[index]; |
| if (*name_index != kIndexUnresolved) { |
| return *name_index; |
| } |
| |
| const DexFile::StringId* string_id = dex_file->FindStringId(kNameCacheNames[index]); |
| if (string_id == nullptr) { |
| *name_index = kIndexNotFound; |
| return *name_index; |
| } |
| *name_index = dex_file->GetIndexForStringId(*string_id); |
| return *name_index; |
| } |
| |
| uint32_t DexFileMethodInliner::FindProtoIndex(const DexFile* dex_file, IndexCache* cache, |
| ProtoCacheIndex index) { |
| uint32_t* proto_index = &cache->proto_indexes[index]; |
| if (*proto_index != kIndexUnresolved) { |
| return *proto_index; |
| } |
| |
| const ProtoDef& proto_def = kProtoCacheDefs[index]; |
| uint32_t return_index = FindClassIndex(dex_file, cache, proto_def.return_type); |
| if (return_index == kIndexNotFound) { |
| *proto_index = kIndexNotFound; |
| return *proto_index; |
| } |
| uint16_t return_type = static_cast<uint16_t>(return_index); |
| DCHECK_EQ(static_cast<uint32_t>(return_type), return_index); |
| |
| uint32_t signature_length = proto_def.param_count; |
| uint16_t signature_type_idxs[kProtoMaxParams]; |
| for (uint32_t i = 0; i != signature_length; ++i) { |
| uint32_t param_index = FindClassIndex(dex_file, cache, proto_def.params[i]); |
| if (param_index == kIndexNotFound) { |
| *proto_index = kIndexNotFound; |
| return *proto_index; |
| } |
| signature_type_idxs[i] = static_cast<uint16_t>(param_index); |
| DCHECK_EQ(static_cast<uint32_t>(signature_type_idxs[i]), param_index); |
| } |
| |
| const DexFile::ProtoId* proto_id = dex_file->FindProtoId(return_type, signature_type_idxs, |
| signature_length); |
| if (proto_id == nullptr) { |
| *proto_index = kIndexNotFound; |
| return *proto_index; |
| } |
| *proto_index = dex_file->GetIndexForProtoId(*proto_id); |
| return *proto_index; |
| } |
| |
| uint32_t DexFileMethodInliner::FindMethodIndex(const DexFile* dex_file, IndexCache* cache, |
| const MethodDef& method_def) { |
| uint32_t declaring_class_index = FindClassIndex(dex_file, cache, method_def.declaring_class); |
| if (declaring_class_index == kIndexNotFound) { |
| return kIndexNotFound; |
| } |
| uint32_t name_index = FindNameIndex(dex_file, cache, method_def.name); |
| if (name_index == kIndexNotFound) { |
| return kIndexNotFound; |
| } |
| uint32_t proto_index = FindProtoIndex(dex_file, cache, method_def.proto); |
| if (proto_index == kIndexNotFound) { |
| return kIndexNotFound; |
| } |
| const DexFile::MethodId* method_id = |
| dex_file->FindMethodId(dex_file->GetTypeId(declaring_class_index), |
| dex_file->GetStringId(name_index), |
| dex_file->GetProtoId(proto_index)); |
| if (method_id == nullptr) { |
| return kIndexNotFound; |
| } |
| return dex_file->GetIndexForMethodId(*method_id); |
| } |
| |
| DexFileMethodInliner::IndexCache::IndexCache() { |
| std::fill_n(class_indexes, arraysize(class_indexes), kIndexUnresolved); |
| std::fill_n(name_indexes, arraysize(name_indexes), kIndexUnresolved); |
| std::fill_n(proto_indexes, arraysize(proto_indexes), kIndexUnresolved); |
| } |
| |
| void DexFileMethodInliner::FindIntrinsics(const DexFile* dex_file) { |
| DCHECK(dex_file != nullptr); |
| DCHECK(dex_file_ == nullptr); |
| IndexCache cache; |
| for (const IntrinsicDef& def : kIntrinsicMethods) { |
| uint32_t method_idx = FindMethodIndex(dex_file, &cache, def.method_def); |
| if (method_idx != kIndexNotFound) { |
| DCHECK(inline_methods_.find(method_idx) == inline_methods_.end()); |
| inline_methods_[method_idx] = def.intrinsic; |
| } |
| } |
| dex_file_ = dex_file; |
| } |
| |
| bool DexFileMethodInliner::AddInlineMethod(int32_t method_idx, InlineMethodOpcode opcode, |
| uint16_t flags, uint32_t data) { |
| WriterMutexLock mu(Thread::Current(), lock_); |
| InlineMethod* im = &inline_methods_[method_idx]; |
| if (im->flags == 0) { |
| *im = InlineMethod{opcode, flags, data}; |
| return true; |
| } else { |
| // TODO: Warning about a method being already inlined? |
| LOG(WARNING) << "Inliner: " << PrettyMethod(method_idx, *dex_file_) << " already inline, " |
| << im->flags; |
| return false; |
| } |
| } |
| |
| bool DexFileMethodInliner::AnalyseReturnMethod(int32_t method_idx, |
| const DexFile::CodeItem* code_item, OpSize size) { |
| const Instruction* return_instruction = Instruction::At(code_item->insns_); |
| if (return_instruction->Opcode() == Instruction::RETURN_VOID) { |
| return AddInlineMethod(method_idx, kInlineOpNop, kInlineSpecial, 0); |
| } |
| uint32_t reg = return_instruction->VRegA_11x(); |
| uint32_t arg_start = code_item->registers_size_ - code_item->ins_size_; |
| DCHECK_GE(reg, arg_start); |
| DCHECK_LT(size == kLong ? reg + 1 : reg, code_item->registers_size_); |
| |
| InlineReturnArgData data; |
| data.d.arg = reg - arg_start; |
| data.d.op_size = size; |
| data.d.reserved = 0; |
| return AddInlineMethod(method_idx, kInlineOpReturnArg, kInlineSpecial, data.data); |
| } |
| |
| bool DexFileMethodInliner::AnalyseConstMethod(int32_t method_idx, |
| const DexFile::CodeItem* code_item) { |
| const Instruction* instruction = Instruction::At(code_item->insns_); |
| const Instruction* return_instruction = instruction->Next(); |
| Instruction::Code return_opcode = return_instruction->Opcode(); |
| if (return_opcode != Instruction::RETURN && |
| return_opcode != Instruction::RETURN_OBJECT) { |
| return false; |
| } |
| |
| uint32_t return_reg = return_instruction->VRegA_11x(); |
| DCHECK_LT(return_reg, code_item->registers_size_); |
| |
| uint32_t vA, vB, dummy; |
| uint64_t dummy_wide; |
| instruction->Decode(vA, vB, dummy_wide, dummy, nullptr); |
| if (instruction->Opcode() == Instruction::CONST_HIGH16) { |
| vB <<= 16; |
| } |
| DCHECK_LT(vA, code_item->registers_size_); |
| if (vA != return_reg) { |
| return false; // Not returning the value set by const? |
| } |
| if (return_opcode == Instruction::RETURN_OBJECT && vB != 0) { |
| return false; // Returning non-null reference constant? |
| } |
| return AddInlineMethod(method_idx, kInlineOpConst, kInlineSpecial, vB); |
| } |
| |
| bool DexFileMethodInliner::AnalyseIGetMethod(int32_t method_idx, const DexFile::CodeItem* code_item, |
| OpSize size, bool is_object) { |
| const Instruction* instruction = Instruction::At(code_item->insns_); |
| Instruction::Code opcode = instruction->Opcode(); |
| const Instruction* return_instruction = instruction->Next(); |
| Instruction::Code return_opcode = return_instruction->Opcode(); |
| if (!(return_opcode == Instruction::RETURN && size != kLong) && |
| !(return_opcode == Instruction::RETURN_WIDE && size == kLong) && |
| !(return_opcode == Instruction::RETURN_OBJECT && opcode == Instruction::IGET_OBJECT)) { |
| return false; |
| } |
| |
| uint32_t return_reg = return_instruction->VRegA_11x(); |
| DCHECK_LT(return_opcode == Instruction::RETURN_WIDE ? return_reg + 1 : return_reg, |
| code_item->registers_size_); |
| |
| uint32_t vA, vB, vC; |
| uint64_t dummy_wide; |
| instruction->Decode(vA, vB, dummy_wide, vC, nullptr); |
| uint32_t arg_start = code_item->registers_size_ - code_item->ins_size_; |
| DCHECK_GE(vB, arg_start); |
| DCHECK_LT(vB, code_item->registers_size_); |
| DCHECK_LT(size == kLong ? vA + 1 : vA, code_item->registers_size_); |
| if (vA != return_reg) { |
| return false; // Not returning the value retrieved by iget? |
| } |
| |
| // TODO: Check that the field is FastInstance(). |
| |
| InlineIGetIPutData data; |
| data.d.field = vC; |
| data.d.op_size = size; |
| data.d.is_object = is_object; |
| data.d.object_arg = vB - arg_start; // Allow iget on any register, not just "this" |
| data.d.src_arg = 0; |
| data.d.reserved = 0; |
| return AddInlineMethod(method_idx, kInlineOpIGet, kInlineSpecial, data.data); |
| } |
| |
| bool DexFileMethodInliner::AnalyseIPutMethod(int32_t method_idx, const DexFile::CodeItem* code_item, |
| OpSize size, bool is_object) { |
| const Instruction* instruction = Instruction::At(code_item->insns_); |
| const Instruction* return_instruction = instruction->Next(); |
| if (return_instruction->Opcode() != Instruction::RETURN_VOID) { |
| // TODO: Support returning an argument. |
| // This is needed by builder classes and generated accessor setters. |
| // builder.setX(value): iput value, this, fieldX; return-object this; |
| // object.access$nnn(value): iput value, this, fieldX; return value; |
| // Use InlineIGetIPutData::d::reserved to hold the information. |
| return false; |
| } |
| |
| uint32_t vA, vB, vC; |
| uint64_t dummy_wide; |
| instruction->Decode(vA, vB, dummy_wide, vC, nullptr); |
| uint32_t arg_start = code_item->registers_size_ - code_item->ins_size_; |
| DCHECK_GE(vB, arg_start); |
| DCHECK_GE(vA, arg_start); |
| DCHECK_LT(vB, code_item->registers_size_); |
| DCHECK_LT(size == kLong ? vA + 1 : vA, code_item->registers_size_); |
| |
| // TODO: Check that the field (vC) is FastInstance(). |
| |
| InlineIGetIPutData data; |
| data.d.field = vC; |
| data.d.op_size = size; |
| data.d.is_object = is_object; |
| data.d.object_arg = vB - arg_start; // Allow iput on any register, not just "this" |
| data.d.src_arg = vA - arg_start; |
| data.d.reserved = 0; |
| return AddInlineMethod(method_idx, kInlineOpIPut, kInlineSpecial, data.data); |
| } |
| |
| } // namespace art |
