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/*
* 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.
*/
#ifndef ART_SRC_COMPILER_LLVM_TBAA_INFO_H_
#define ART_SRC_COMPILER_LLVM_TBAA_INFO_H_
#include "backend_types.h"
#include <cstring>
namespace llvm {
class LLVMContext;
class MDNode;
class StringRef;
}
namespace art {
namespace compiler_llvm {
class TBAAInfo {
public:
TBAAInfo(llvm::LLVMContext& context) : context_(context), root_(NULL) {
std::memset(special_type_, 0, sizeof(special_type_));
std::memset(memory_jtype_, 0, sizeof(memory_jtype_));
}
llvm::MDNode* GetRootType();
llvm::MDNode* GetSpecialType(TBAASpecialType special_ty);
llvm::MDNode* GetMemoryJType(TBAASpecialType special_ty, JType j_ty);
llvm::MDNode* GenTBAANode(llvm::StringRef name,
llvm::MDNode* parent = NULL,
bool readonly = false);
private:
llvm::LLVMContext& context_;
llvm::MDNode* root_;
llvm::MDNode* special_type_[MAX_TBAA_SPECIAL_TYPE];
// There are 3 categories of memory types will not alias: array element, instance field, and
// static field.
llvm::MDNode* memory_jtype_[3][MAX_JTYPE];
};
} // namespace compiler_llvm
} // namespace art
#endif // ART_SRC_COMPILER_LLVM_TBAA_INFO_H_
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