1 //===- TypeStreamMerger.h ---------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_DEBUGINFO_CODEVIEW_TYPESTREAMMERGER_H 11 #define LLVM_DEBUGINFO_CODEVIEW_TYPESTREAMMERGER_H 12 13 #include "llvm/ADT/ArrayRef.h" 14 #include "llvm/ADT/SmallVector.h" 15 #include "llvm/DebugInfo/CodeView/TypeRecord.h" 16 #include "llvm/Support/Error.h" 17 18 namespace llvm { 19 namespace codeview { 20 21 class TypeIndex; 22 class TypeTableBuilder; 23 24 /// \brief Merge one set of type records into another. This method assumes 25 /// that all records are type records, and there are no Id records present. 26 /// 27 /// \param Dest The table to store the re-written type records into. 28 /// 29 /// \param SourceToDest A vector, indexed by the TypeIndex in the source 30 /// type stream, that contains the index of the corresponding type record 31 /// in the destination stream. 32 /// 33 /// \param Types The collection of types to merge in. 34 /// 35 /// \returns Error::success() if the operation succeeded, otherwise an 36 /// appropriate error code. 37 Error mergeTypeRecords(TypeTableBuilder &Dest, 38 SmallVectorImpl<TypeIndex> &SourceToDest, 39 const CVTypeArray &Types); 40 41 /// \brief Merge one set of id records into another. This method assumes 42 /// that all records are id records, and there are no Type records present. 43 /// However, since Id records can refer back to Type records, this method 44 /// assumes that the referenced type records have also been merged into 45 /// another type stream (for example using the above method), and accepts 46 /// the mapping from source to dest for that stream so that it can re-write 47 /// the type record mappings accordingly. 48 /// 49 /// \param Dest The table to store the re-written id records into. 50 /// 51 /// \param Types The mapping to use for the type records that these id 52 /// records refer to. 53 /// 54 /// \param SourceToDest A vector, indexed by the TypeIndex in the source 55 /// id stream, that contains the index of the corresponding id record 56 /// in the destination stream. 57 /// 58 /// \param Ids The collection of id records to merge in. 59 /// 60 /// \returns Error::success() if the operation succeeded, otherwise an 61 /// appropriate error code. 62 Error mergeIdRecords(TypeTableBuilder &Dest, ArrayRef<TypeIndex> Types, 63 SmallVectorImpl<TypeIndex> &SourceToDest, 64 const CVTypeArray &Ids); 65 66 /// \brief Merge a unified set of type and id records, splitting them into 67 /// separate output streams. 68 /// 69 /// \param DestIds The table to store the re-written id records into. 70 /// 71 /// \param DestTypes the table to store the re-written type records into. 72 /// 73 /// \param SourceToDest A vector, indexed by the TypeIndex in the source 74 /// id stream, that contains the index of the corresponding id record 75 /// in the destination stream. 76 /// 77 /// \param IdsAndTypes The collection of id records to merge in. 78 /// 79 /// \returns Error::success() if the operation succeeded, otherwise an 80 /// appropriate error code. 81 Error mergeTypeAndIdRecords(TypeTableBuilder &DestIds, 82 TypeTableBuilder &DestTypes, 83 SmallVectorImpl<TypeIndex> &SourceToDest, 84 const CVTypeArray &IdsAndTypes); 85 86 } // end namespace codeview 87 } // end namespace llvm 88 89 #endif // LLVM_DEBUGINFO_CODEVIEW_TYPESTREAMMERGER_H 90
