| /* |
| * Copyright (C) 2012 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 "tbaa_info.h" |
| |
| #include <llvm/ADT/SmallVector.h> |
| #include <llvm/ADT/StringRef.h> |
| #include <llvm/Constants.h> |
| #include <llvm/Metadata.h> |
| #include <llvm/Type.h> |
| |
| |
| namespace art { |
| namespace compiler_llvm { |
| |
| |
| llvm::MDNode* TBAAInfo::GetRootType() { |
| if (root_ == NULL) { |
| root_ = GenTBAANode("Art TBAA Root"); |
| } |
| return root_; |
| } |
| |
| llvm::MDNode* TBAAInfo::GetSpecialType(TBAASpecialType sty_id) { |
| DCHECK_GE(sty_id, 0) << "Unknown TBAA special type: " << sty_id; |
| DCHECK_LT(sty_id, MAX_TBAA_SPECIAL_TYPE) << "Unknown TBAA special type: " << sty_id; |
| |
| llvm::MDNode*& spec_ty = special_type_[sty_id]; |
| if (spec_ty == NULL) { |
| switch (sty_id) { |
| case kTBAARegister: spec_ty = GenTBAANode("Register", GetRootType()); break; |
| case kTBAAStackTemp: spec_ty = GenTBAANode("StackTemp", GetRootType()); break; |
| case kTBAAMemory: spec_ty = GenTBAANode("Memory", GetRootType()); break; |
| case kTBAAMemoryArray: spec_ty = GenTBAANode("MemoryArray", GetRootType()); break; |
| case kTBAAMemoryIdentified: spec_ty = GenTBAANode("MemoryIdentified", GetRootType()); break; |
| case kTBAAMemoryStatic: spec_ty = GenTBAANode("MemoryStatic", GetRootType()); break; |
| case kTBAARuntimeInfo: spec_ty = GenTBAANode("RuntimeInfo", GetRootType()); break; |
| case kTBAAConstJObject: spec_ty = GenTBAANode("ConstJObject", GetRootType(), true); break; |
| default: |
| LOG(FATAL) << "Unknown TBAA special type: " << sty_id; |
| break; |
| } |
| } |
| return spec_ty; |
| } |
| |
| llvm::MDNode* TBAAInfo::GenTBAANode(llvm::StringRef name, llvm::MDNode* parent, bool read_only) { |
| llvm::SmallVector<llvm::Value*, 3> array_ref; |
| |
| array_ref.push_back(llvm::MDString::get(context_, name)); |
| if (parent != NULL) { |
| array_ref.push_back(parent); |
| } |
| if (read_only != false) { |
| array_ref.push_back(llvm::ConstantInt::get(llvm::Type::getInt1Ty(context_), read_only)); |
| } |
| |
| return llvm::MDNode::get(context_, array_ref); |
| } |
| |
| |
| } // namespace compiler_llvm |
| } // namespace art |