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      1 /*
      2  * Copyright 2010-2012, 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 #ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_TYPE_H_  // NOLINT
     18 #define _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_TYPE_H_
     19 
     20 #include <list>
     21 #include <set>
     22 #include <string>
     23 #include <sstream>
     24 
     25 #include "clang/AST/Decl.h"
     26 #include "clang/AST/Type.h"
     27 
     28 #include "llvm/ADT/SmallPtrSet.h"
     29 #include "llvm/ADT/StringMap.h"
     30 #include "llvm/ADT/StringRef.h"
     31 
     32 #include "llvm/Support/ManagedStatic.h"
     33 
     34 #include "slang_rs_exportable.h"
     35 
     36 #define RS_PADDING_FIELD_NAME ".rs.padding"
     37 
     38 inline const clang::Type* GetCanonicalType(const clang::Type* T) {
     39   if (T == nullptr) {
     40     return  nullptr;
     41   }
     42   return T->getCanonicalTypeInternal().getTypePtr();
     43 }
     44 
     45 inline const clang::Type* GetCanonicalType(clang::QualType QT) {
     46   return GetCanonicalType(QT.getTypePtr());
     47 }
     48 
     49 inline const clang::Type* GetExtVectorElementType(const clang::ExtVectorType *T) {
     50   if (T == nullptr) {
     51     return nullptr;
     52   }
     53   return GetCanonicalType(T->getElementType());
     54 }
     55 
     56 inline const clang::Type* GetPointeeType(const clang::PointerType *T) {
     57   if (T == nullptr) {
     58     return nullptr;
     59   }
     60   return GetCanonicalType(T->getPointeeType());
     61 }
     62 
     63 inline const clang::Type* GetConstantArrayElementType(const clang::ConstantArrayType *T) {
     64   if (T == nullptr) {
     65     return nullptr;
     66   }
     67   return GetCanonicalType(T->getElementType());
     68 }
     69 
     70 
     71 namespace llvm {
     72   class Type;
     73 }   // namespace llvm
     74 
     75 namespace slang {
     76 
     77 class RSContext;
     78 
     79 // Broad grouping of the data types
     80 enum DataTypeCategory {
     81     PrimitiveDataType,
     82     MatrixDataType,
     83     ObjectDataType
     84 };
     85 
     86 // Denote whether a particular export is intended for a legacy kernel argument.
     87 // NotLegacyKernelArgument - not a legacy kernel argument (might not even be a
     88 //                           kernel argument).
     89 // LegacyKernelArgument    - legacy pass-by-reference kernel argument using
     90 //                           pointers and no kernel attribute.
     91 enum ExportKind {
     92    NotLegacyKernelArgument,
     93    LegacyKernelArgument
     94  };
     95 
     96 
     97 // From graphics/java/android/renderscript/Element.java: Element.DataType
     98 /* NOTE: The values of the enums are found compiled in the bit code (i.e. as
     99  * values, not symbolic.  When adding new types, you must add them to the end.
    100  * If removing types, you can't re-use the integer value.
    101  *
    102  * TODO: but if you do this, you won't be able to keep using First* & Last*
    103  * for validation.
    104  *
    105  * IMPORTANT: This enum should correspond one-for-one to the entries found in the
    106  * gReflectionsTypes table (except for the two negative numbers).  Don't edit one without
    107  * the other.
    108  */
    109 enum DataType {
    110     DataTypeIsStruct = -2,
    111     DataTypeUnknown = -1,
    112 
    113     DataTypeFloat16 = 0,
    114     DataTypeFloat32 = 1,
    115     DataTypeFloat64 = 2,
    116     DataTypeSigned8 = 3,
    117     DataTypeSigned16 = 4,
    118     DataTypeSigned32 = 5,
    119     DataTypeSigned64 = 6,
    120     DataTypeUnsigned8 = 7,
    121     DataTypeUnsigned16 = 8,
    122     DataTypeUnsigned32 = 9,
    123     DataTypeUnsigned64 = 10,
    124     DataTypeBoolean = 11,
    125     DataTypeUnsigned565 = 12,
    126     DataTypeUnsigned5551 = 13,
    127     DataTypeUnsigned4444 = 14,
    128 
    129     DataTypeRSMatrix2x2 = 15,
    130     DataTypeRSMatrix3x3 = 16,
    131     DataTypeRSMatrix4x4 = 17,
    132 
    133     DataTypeRSElement = 18,
    134     DataTypeRSType = 19,
    135     DataTypeRSAllocation = 20,
    136     DataTypeRSSampler = 21,
    137     DataTypeRSScript = 22,
    138     DataTypeRSMesh = 23,
    139     DataTypeRSPath = 24,
    140     DataTypeRSProgramFragment = 25,
    141     DataTypeRSProgramVertex = 26,
    142     DataTypeRSProgramRaster = 27,
    143     DataTypeRSProgramStore = 28,
    144     DataTypeRSFont = 29,
    145 
    146     // This should always be last and correspond to the size of the gReflectionTypes table.
    147     DataTypeMax
    148 };
    149 
    150 typedef struct {
    151     // The data type category
    152     DataTypeCategory category;
    153     // "Common name" in script (C99)
    154     const char * s_name;
    155     // The element name in RenderScript
    156     const char * rs_type;
    157     // The short element name in RenderScript
    158     const char * rs_short_type;
    159     // The size of the type in bits
    160     uint32_t size_in_bits;
    161     // The reflected name in C code
    162     const char * c_name;
    163     // The reflected name in Java code
    164     const char * java_name;
    165     // The array type that is compatible with Allocations of our type,
    166     // for use with copyTo(), copyFrom()
    167     const char * java_array_element_name;
    168     // The prefix for C vector types
    169     const char * rs_c_vector_prefix;
    170     // The prefix for Java vector types
    171     const char * rs_java_vector_prefix;
    172     // Indicates an unsigned type undergoing Java promotion
    173     bool java_promotion;
    174 } RSReflectionType;
    175 
    176 
    177 typedef struct RSReflectionTypeData_rec {
    178     const RSReflectionType *type;
    179     uint32_t vecSize;   // number of elements; one if not a vector
    180     bool isPointer;
    181     uint32_t arraySize; // number of elements; zero if not an array
    182 
    183     // Subelements
    184     //std::vector<const struct RSReflectionTypeData_rec *> fields;
    185     //std::vector< std::string > fieldNames;
    186     //std::vector< uint32_t> fieldOffsetBytes;
    187 } RSReflectionTypeData;
    188 
    189 // Make a name for types that are too complicated to create the real names.
    190 std::string CreateDummyName(const char *type, const std::string &name);
    191 
    192 inline bool IsDummyName(const llvm::StringRef &Name) {
    193   return Name.startswith("<");
    194 }
    195 
    196 class RSExportType : public RSExportable {
    197   friend class RSExportElement;
    198  public:
    199   typedef enum {
    200     ExportClassPrimitive,
    201     ExportClassPointer,
    202     ExportClassVector,
    203     ExportClassMatrix,
    204     ExportClassConstantArray,
    205     ExportClassRecord
    206   } ExportClass;
    207 
    208   void convertToRTD(RSReflectionTypeData *rtd) const;
    209 
    210  private:
    211   ExportClass mClass;
    212   std::string mName;
    213 
    214   // Cache the result after calling convertToLLVMType() at the first time
    215   mutable llvm::Type *mLLVMType;
    216 
    217  protected:
    218   RSExportType(RSContext *Context,
    219                ExportClass Class,
    220                const llvm::StringRef &Name,
    221                clang::SourceLocation Loc = clang::SourceLocation());
    222 
    223   // Let's make it private since there're some prerequisites to call this
    224   // function.
    225   //
    226   // @T was normalized by calling RSExportType::NormalizeType().
    227   // @TypeName was retrieved from RSExportType::GetTypeName() before calling
    228   //           this.
    229   // @EK denotes whether this @T is being used for a legacy kernel argument or
    230   //     something else.
    231   //
    232   static RSExportType *Create(RSContext *Context,
    233                               const clang::Type *T,
    234                               const llvm::StringRef &TypeName,
    235                               ExportKind EK);
    236 
    237   static llvm::StringRef GetTypeName(const clang::Type *T);
    238 
    239   // This function convert the RSExportType to LLVM type. Actually, it should be
    240   // "convert Clang type to LLVM type." However, clang doesn't make this API
    241   // (lib/CodeGen/CodeGenTypes.h) public, we need to do by ourselves.
    242   //
    243   // Once we can get LLVM type, we can use LLVM to get alignment information,
    244   // allocation size of a given type and structure layout that LLVM used
    245   // (all of these information are target dependent) without dealing with these
    246   // by ourselves.
    247   virtual llvm::Type *convertToLLVMType() const = 0;
    248   // Record type may recursively reference its type definition. We need a
    249   // temporary type setup before the type construction gets done.
    250   inline void setAbstractLLVMType(llvm::Type *LLVMType) const {
    251     mLLVMType = LLVMType;
    252   }
    253 
    254   virtual ~RSExportType();
    255 
    256  public:
    257   // This function additionally verifies that the Type T is exportable.
    258   // If it is not, this function returns false. Otherwise it returns true.
    259   static bool NormalizeType(const clang::Type *&T,
    260                             llvm::StringRef &TypeName,
    261                             RSContext *Context,
    262                             const clang::VarDecl *VD,
    263                             ExportKind EK);
    264 
    265   // This function checks whether the specified type can be handled by RS/FS.
    266   // If it cannot, this function returns false. Otherwise it returns true.
    267   // Filterscript has additional restrictions on supported types.
    268   static bool ValidateType(slang::RSContext *Context, clang::ASTContext &C,
    269                            clang::QualType QT, const clang::NamedDecl *ND,
    270                            clang::SourceLocation Loc, unsigned int TargetAPI,
    271                            bool IsFilterscript, bool IsExtern);
    272 
    273   // This function ensures that the VarDecl can be properly handled by RS.
    274   // If it cannot, this function returns false. Otherwise it returns true.
    275   // Filterscript has additional restrictions on supported types.
    276   static bool ValidateVarDecl(slang::RSContext *Context, clang::VarDecl *VD,
    277                               unsigned int TargetAPI, bool IsFilterscript);
    278 
    279   // @T may not be normalized
    280   static RSExportType *Create(RSContext *Context, const clang::Type *T,
    281                               ExportKind EK,
    282                               // T is type of VD or of subobject within VD
    283                               const clang::VarDecl *VD = nullptr);
    284   static RSExportType *CreateFromDecl(RSContext *Context,
    285                                       const clang::VarDecl *VD);
    286 
    287   static const clang::Type *GetTypeOfDecl(const clang::DeclaratorDecl *DD);
    288 
    289   inline ExportClass getClass() const { return mClass; }
    290 
    291   inline llvm::Type *getLLVMType() const {
    292     if (mLLVMType == nullptr)
    293       mLLVMType = convertToLLVMType();
    294     return mLLVMType;
    295   }
    296 
    297   // Return the maximum number of bytes that may be written when this type is stored.
    298   virtual size_t getStoreSize() const;
    299 
    300   // Return the distance in bytes between successive elements of this type; it includes padding.
    301   virtual size_t getAllocSize() const;
    302 
    303   inline const std::string &getName() const { return mName; }
    304 
    305   virtual std::string getElementName() const {
    306     // Base case is actually an invalid C/Java identifier.
    307     return "@@INVALID@@";
    308   }
    309 
    310   virtual bool keep();
    311   // matchODR(): a helper function for Slang::checkODR() on ODR validation
    312   //
    313   // The LookInto parameter dictates whether to recursively validate member
    314   // types of given compound types. This currently only affects struct
    315   // (RSExportRecordType); it has no effect on primitive types, vector types,
    316   // or matrix types.
    317   //
    318   // Consider the following pseudo code of nested struct types:
    319   //
    320   // Translation unit #1:     Translation unit #2:
    321   //
    322   // struct Name(AA) {        struct Name(BB) {
    323   //   Type(aa) aa;             Type(bb) bb;
    324   // };                       };
    325   //
    326   // struct Name(A)  {        struct Name(B) {
    327   //   struct Name(AA) a;       struct Name(BB) b;
    328   // };                       };
    329   //
    330   // Case 1:
    331   // Assuming aa and bb do not match (say mismatching just in field name), but
    332   // the rest does, then the desirable behavior is to report an ODR violation
    333   // on struct BB (vs. struct AA) but not on struct B (vs. struct A), because
    334   // BB is the tightest enclosing declaration of the violation, not B.
    335   //
    336   // For this case, RSExportRecordType::matchODR() has the following behavior:
    337   //
    338   // A.matchODR(B, true) should NOT report an ODR violation;
    339   // AA.matchODR(BB, true) should report an ODR violation w.r.t. struct BB;
    340   // A.matchODR(B, false) should not report an error;
    341   // AA.matchODR(BB, false) should not report an error.
    342   //
    343   // Slang::checkODR() acts as a driver for this validation case. It calls
    344   // A.matchODR() and AA.matchODR() comparing against B and BB respectively.
    345   //
    346   // By setting LookInto true when Slang::checkODR() calls matchODR() with
    347   // the outermost compound type, and false with any recursively discovered
    348   // types, we can ensure the desirable ODR violation reporting behavior.
    349   //
    350   // Case 2:
    351   // Assuming Name(AA) != Name(BB), but the rest of the declarations match,
    352   // then the desirable behavior is to report an ODR violation on struct B
    353   // (vs. struct A).
    354   //
    355   // In this case, RSExportRecordType::matchODR() has the following behavior:
    356   //
    357   // A.matchODR(B, true) should report an ODR violation w.r.t. struct B;
    358   // because AA and BB are two different types, AA.matchODR(BB) won't be
    359   // called.
    360   //
    361   // A.matchODR(B, false) should not report an error; this happens, should
    362   // there be any more additional enclosing types for A subject to ODR check.
    363   virtual bool matchODR(const RSExportType *E, bool LookInto) const;
    364 };  // RSExportType
    365 
    366 // Primitive types
    367 class RSExportPrimitiveType : public RSExportType {
    368   friend class RSExportType;
    369   friend class RSExportElement;
    370  private:
    371   DataType mType;
    372   bool mNormalized;
    373 
    374   typedef llvm::StringMap<DataType> RSSpecificTypeMapTy;
    375   static llvm::ManagedStatic<RSSpecificTypeMapTy> RSSpecificTypeMap;
    376 
    377   static const size_t SizeOfDataTypeInBits[];
    378   // @T was normalized by calling RSExportType::NormalizeType() before calling
    379   // this.
    380   // @TypeName was retrieved from RSExportType::GetTypeName() before calling
    381   // this
    382   static RSExportPrimitiveType *Create(RSContext *Context,
    383                                        const clang::Type *T,
    384                                        const llvm::StringRef &TypeName,
    385                                        bool Normalized = false);
    386 
    387  protected:
    388   RSExportPrimitiveType(RSContext *Context,
    389                         // for derived class to set their type class
    390                         ExportClass Class,
    391                         const llvm::StringRef &Name,
    392                         DataType DT,
    393                         bool Normalized)
    394       : RSExportType(Context, Class, Name),
    395         mType(DT),
    396         mNormalized(Normalized) {
    397   }
    398 
    399   virtual llvm::Type *convertToLLVMType() const;
    400 
    401   static DataType GetDataType(RSContext *Context, const clang::Type *T);
    402 
    403  public:
    404   // T is normalized by calling RSExportType::NormalizeType() before
    405   // calling this
    406   static bool IsPrimitiveType(const clang::Type *T);
    407 
    408   // @T may not be normalized
    409   static RSExportPrimitiveType *Create(RSContext *Context,
    410                                        const clang::Type *T);
    411 
    412   static DataType GetRSSpecificType(const llvm::StringRef &TypeName);
    413   static DataType GetRSSpecificType(const clang::Type *T);
    414 
    415   static bool IsRSMatrixType(DataType DT);
    416   static bool IsRSObjectType(DataType DT);
    417   static bool IsRSObjectType(const clang::Type *T) {
    418     return IsRSObjectType(GetRSSpecificType(T));
    419   }
    420 
    421   // Determines whether T is [an array of] struct that contains at least one
    422   // RS object type within it.
    423   static bool IsStructureTypeWithRSObject(const clang::Type *T);
    424 
    425   // For a primitive type, this is the size of the type.
    426   // For a vector type (RSExportVectorType is derived from RSExportPrimitiveType),
    427   // this is the size of a single vector element (component).
    428   static size_t GetElementSizeInBits(const RSExportPrimitiveType *EPT);
    429 
    430   inline DataType getType() const { return mType; }
    431   inline bool isRSObjectType() const {
    432       return IsRSObjectType(mType);
    433   }
    434 
    435   bool matchODR(const RSExportType *E, bool LookInto) const override;
    436 
    437   static RSReflectionType *getRSReflectionType(DataType DT);
    438   static RSReflectionType *getRSReflectionType(
    439       const RSExportPrimitiveType *EPT) {
    440     return getRSReflectionType(EPT->getType());
    441   }
    442 
    443   // For a vector type, this is the size of a single element.
    444   unsigned getElementSizeInBytes() const { return (GetElementSizeInBits(this) >> 3); }
    445 
    446   std::string getElementName() const {
    447     return getRSReflectionType(this)->rs_short_type;
    448   }
    449 };  // RSExportPrimitiveType
    450 
    451 
    452 class RSExportPointerType : public RSExportType {
    453   friend class RSExportType;
    454   friend class RSExportFunc;
    455  private:
    456   const RSExportType *mPointeeType;
    457 
    458   RSExportPointerType(RSContext *Context,
    459                       const llvm::StringRef &Name,
    460                       const RSExportType *PointeeType)
    461       : RSExportType(Context, ExportClassPointer, Name),
    462         mPointeeType(PointeeType) {
    463   }
    464 
    465   // @PT was normalized by calling RSExportType::NormalizeType() before calling
    466   // this.
    467   static RSExportPointerType *Create(RSContext *Context,
    468                                      const clang::PointerType *PT,
    469                                      const llvm::StringRef &TypeName);
    470 
    471   virtual llvm::Type *convertToLLVMType() const;
    472 
    473  public:
    474   virtual bool keep();
    475 
    476   inline const RSExportType *getPointeeType() const { return mPointeeType; }
    477 
    478   bool matchODR(const RSExportType *E, bool LookInto) const override;
    479 };  // RSExportPointerType
    480 
    481 
    482 class RSExportVectorType : public RSExportPrimitiveType {
    483   friend class RSExportType;
    484   friend class RSExportElement;
    485  private:
    486   unsigned mNumElement;   // number of elements (components)
    487 
    488   RSExportVectorType(RSContext *Context,
    489                      const llvm::StringRef &Name,
    490                      DataType DT,
    491                      bool Normalized,
    492                      unsigned NumElement)
    493       : RSExportPrimitiveType(Context, ExportClassVector, Name,
    494                               DT, Normalized),
    495         mNumElement(NumElement) {
    496   }
    497 
    498   // @EVT was normalized by calling RSExportType::NormalizeType() before
    499   // calling this.
    500   static RSExportVectorType *Create(RSContext *Context,
    501                                     const clang::ExtVectorType *EVT,
    502                                     const llvm::StringRef &TypeName,
    503                                     bool Normalized = false);
    504 
    505   virtual llvm::Type *convertToLLVMType() const;
    506 
    507  public:
    508   static llvm::StringRef GetTypeName(const clang::ExtVectorType *EVT);
    509 
    510   inline unsigned getNumElement() const { return mNumElement; }
    511 
    512   std::string getElementName() const {
    513     std::stringstream Name;
    514     Name << RSExportPrimitiveType::getRSReflectionType(this)->rs_short_type
    515          << "_" << getNumElement();
    516     return Name.str();
    517   }
    518 
    519   bool matchODR(const RSExportType *E, bool LookInto) const override;
    520 };
    521 
    522 // Only *square* *float* matrix is supported by now.
    523 //
    524 // struct rs_matrix{2x2,3x3,4x4, ..., NxN} should be defined as the following
    525 // form *exactly*:
    526 //  typedef struct {
    527 //    float m[{NxN}];
    528 //  } rs_matrixNxN;
    529 //
    530 //  where mDim will be N.
    531 class RSExportMatrixType : public RSExportType {
    532   friend class RSExportType;
    533  private:
    534   unsigned mDim;  // dimension
    535 
    536   RSExportMatrixType(RSContext *Context,
    537                      const llvm::StringRef &Name,
    538                      unsigned Dim)
    539     : RSExportType(Context, ExportClassMatrix, Name),
    540       mDim(Dim) {
    541   }
    542 
    543   virtual llvm::Type *convertToLLVMType() const;
    544 
    545  public:
    546   // @RT was normalized by calling RSExportType::NormalizeType() before
    547   // calling this.
    548   static RSExportMatrixType *Create(RSContext *Context,
    549                                     const clang::RecordType *RT,
    550                                     const llvm::StringRef &TypeName,
    551                                     unsigned Dim);
    552 
    553   inline unsigned getDim() const { return mDim; }
    554 
    555   bool matchODR(const RSExportType *E, bool LookInto) const override;
    556 
    557 };
    558 
    559 class RSExportConstantArrayType : public RSExportType {
    560   friend class RSExportType;
    561  private:
    562   const RSExportType *mElementType;  // Array element type
    563   unsigned mNumElement;              // Array element count
    564 
    565   RSExportConstantArrayType(RSContext *Context,
    566                             const RSExportType *ElementType,
    567                             unsigned NumElement)
    568     : RSExportType(Context, ExportClassConstantArray, "<ConstantArray>"),
    569       mElementType(ElementType),
    570       mNumElement(NumElement) {
    571   }
    572 
    573   // @CAT was normalized by calling RSExportType::NormalizeType() before
    574   // calling this.
    575   static RSExportConstantArrayType *Create(RSContext *Context,
    576                                            const clang::ConstantArrayType *CAT);
    577 
    578   virtual llvm::Type *convertToLLVMType() const;
    579 
    580  public:
    581   unsigned getNumElement() const { return mNumElement; }
    582   const RSExportType *getElementType() const { return mElementType; }
    583 
    584   std::string getElementName() const {
    585     return mElementType->getElementName();
    586   }
    587 
    588   virtual bool keep();
    589   bool matchODR(const RSExportType *E, bool LookInto) const override;
    590 };
    591 
    592 class RSExportRecordType : public RSExportType {
    593   friend class RSExportType;
    594  public:
    595   class Field {
    596    private:
    597     const RSExportType *mType;
    598     // Field name
    599     std::string mName;
    600     // Link to the struct that contain this field
    601     const RSExportRecordType *mParent;
    602     // Offset in the container
    603     size_t mOffset;
    604 
    605    public:
    606     Field(const RSExportType *T,
    607           const llvm::StringRef &Name,
    608           const RSExportRecordType *Parent,
    609           size_t Offset)
    610         : mType(T),
    611           mName(Name.data(), Name.size()),
    612           mParent(Parent),
    613           mOffset(Offset) {
    614     }
    615 
    616     inline const RSExportRecordType *getParent() const { return mParent; }
    617     inline const RSExportType *getType() const { return mType; }
    618     inline const std::string &getName() const { return mName; }
    619     inline size_t getOffsetInParent() const { return mOffset; }
    620   };
    621 
    622   typedef std::list<const Field*>::const_iterator const_field_iterator;
    623 
    624   inline const_field_iterator fields_begin() const {
    625     return this->mFields.begin();
    626   }
    627   inline const_field_iterator fields_end() const {
    628     return this->mFields.end();
    629   }
    630   inline size_t fields_size() const {
    631     return this->mFields.size();
    632   }
    633 
    634  private:
    635   std::list<const Field*> mFields;
    636   bool mIsPacked;
    637   // Artificial export struct type is not exported by user (and thus it won't
    638   // get reflected)
    639   bool mIsArtificial;
    640   size_t mStoreSize;
    641   size_t mAllocSize;
    642 
    643   RSExportRecordType(RSContext *Context,
    644                      const llvm::StringRef &Name,
    645                      clang::SourceLocation Loc,
    646                      bool IsPacked,
    647                      bool IsArtificial,
    648                      size_t StoreSize,
    649                      size_t AllocSize)
    650       : RSExportType(Context, ExportClassRecord, Name, Loc),
    651         mIsPacked(IsPacked),
    652         mIsArtificial(IsArtificial),
    653         mStoreSize(StoreSize),
    654         mAllocSize(AllocSize) {
    655   }
    656 
    657   // @RT was normalized by calling RSExportType::NormalizeType() before calling
    658   // this.
    659   // @TypeName was retrieved from RSExportType::GetTypeName() before calling
    660   // this.
    661   static RSExportRecordType *Create(RSContext *Context,
    662                                     const clang::RecordType *RT,
    663                                     const llvm::StringRef &TypeName,
    664                                     bool mIsArtificial = false);
    665 
    666   virtual llvm::Type *convertToLLVMType() const;
    667 
    668  public:
    669   inline const std::list<const Field*>& getFields() const { return mFields; }
    670   inline bool isPacked() const { return mIsPacked; }
    671   inline bool isArtificial() const { return mIsArtificial; }
    672   virtual size_t getStoreSize() const { return mStoreSize; }
    673   virtual size_t getAllocSize() const { return mAllocSize; }
    674 
    675   virtual std::string getElementName() const {
    676     return "ScriptField_" + getName();
    677   }
    678 
    679   virtual bool keep();
    680   bool matchODR(const RSExportType *E, bool LookInto) const override;
    681 
    682   ~RSExportRecordType() {
    683     for (std::list<const Field*>::iterator I = mFields.begin(),
    684              E = mFields.end();
    685          I != E;
    686          I++)
    687       if (*I != nullptr)
    688         delete *I;
    689   }
    690 };  // RSExportRecordType
    691 
    692 }   // namespace slang
    693 
    694 #endif  // _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_TYPE_H_  NOLINT
    695