/
slang_rs_export_type.cpp
1402 lines (1211 loc) · 45.1 KB
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slang_rs_export_type.cpp
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/*
* Copyright 2010, 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 "slang_rs_export_type.h"
#include <list>
#include <vector>
#include "clang/AST/RecordLayout.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Type.h"
#include "slang_assert.h"
#include "slang_rs_context.h"
#include "slang_rs_export_element.h"
#include "slang_rs_type_spec.h"
#define CHECK_PARENT_EQUALITY(ParentClass, E) \
if (!ParentClass::equals(E)) \
return false;
namespace slang {
namespace {
static const clang::Type *TypeExportableHelper(
const clang::Type *T,
llvm::SmallPtrSet<const clang::Type*, 8>& SPS,
clang::Diagnostic *Diags,
const clang::VarDecl *VD,
const clang::RecordDecl *TopLevelRecord);
static void ReportTypeError(clang::Diagnostic *Diags,
const clang::VarDecl *VD,
const clang::RecordDecl *TopLevelRecord,
const char *Message) {
if (!Diags) {
return;
}
const clang::SourceManager &SM = Diags->getSourceManager();
// Attempt to use the type declaration first (if we have one).
// Fall back to the variable definition, if we are looking at something
// like an array declaration that can't be exported.
if (TopLevelRecord) {
Diags->Report(clang::FullSourceLoc(TopLevelRecord->getLocation(), SM),
Diags->getCustomDiagID(clang::Diagnostic::Error, Message))
<< TopLevelRecord->getName();
} else if (VD) {
Diags->Report(clang::FullSourceLoc(VD->getLocation(), SM),
Diags->getCustomDiagID(clang::Diagnostic::Error, Message))
<< VD->getName();
} else {
slangAssert(false && "Variables should be validated before exporting");
}
return;
}
static const clang::Type *ConstantArrayTypeExportableHelper(
const clang::ConstantArrayType *CAT,
llvm::SmallPtrSet<const clang::Type*, 8>& SPS,
clang::Diagnostic *Diags,
const clang::VarDecl *VD,
const clang::RecordDecl *TopLevelRecord) {
// Check element type
const clang::Type *ElementType = GET_CONSTANT_ARRAY_ELEMENT_TYPE(CAT);
if (ElementType->isArrayType()) {
ReportTypeError(Diags, VD, TopLevelRecord,
"multidimensional arrays cannot be exported: '%0'");
return NULL;
} else if (ElementType->isExtVectorType()) {
const clang::ExtVectorType *EVT =
static_cast<const clang::ExtVectorType*>(ElementType);
unsigned numElements = EVT->getNumElements();
const clang::Type *BaseElementType = GET_EXT_VECTOR_ELEMENT_TYPE(EVT);
if (!RSExportPrimitiveType::IsPrimitiveType(BaseElementType)) {
ReportTypeError(Diags, VD, TopLevelRecord,
"vectors of non-primitive types cannot be exported: '%0'");
return NULL;
}
if (numElements == 3 && CAT->getSize() != 1) {
ReportTypeError(Diags, VD, TopLevelRecord,
"arrays of width 3 vector types cannot be exported: '%0'");
return NULL;
}
}
if (TypeExportableHelper(ElementType, SPS, Diags, VD, TopLevelRecord) == NULL)
return NULL;
else
return CAT;
}
static const clang::Type *TypeExportableHelper(
const clang::Type *T,
llvm::SmallPtrSet<const clang::Type*, 8>& SPS,
clang::Diagnostic *Diags,
const clang::VarDecl *VD,
const clang::RecordDecl *TopLevelRecord) {
// Normalize first
if ((T = GET_CANONICAL_TYPE(T)) == NULL)
return NULL;
if (SPS.count(T))
return T;
switch (T->getTypeClass()) {
case clang::Type::Builtin: {
const clang::BuiltinType *BT =
UNSAFE_CAST_TYPE(const clang::BuiltinType, T);
switch (BT->getKind()) {
#define ENUM_SUPPORT_BUILTIN_TYPE(builtin_type, type, cname) \
case builtin_type:
#include "RSClangBuiltinEnums.inc"
return T;
default: {
return NULL;
}
}
}
case clang::Type::Record: {
if (RSExportPrimitiveType::GetRSSpecificType(T) !=
RSExportPrimitiveType::DataTypeUnknown)
return T; // RS object type, no further checks are needed
// Check internal struct
if (T->isUnionType()) {
ReportTypeError(Diags, NULL, T->getAsUnionType()->getDecl(),
"unions cannot be exported: '%0'");
return NULL;
} else if (!T->isStructureType()) {
slangAssert(false && "Unknown type cannot be exported");
return NULL;
}
clang::RecordDecl *RD = T->getAsStructureType()->getDecl();
if (RD != NULL) {
RD = RD->getDefinition();
if (RD == NULL) {
ReportTypeError(Diags, NULL, T->getAsStructureType()->getDecl(),
"struct is not defined in this module");
return NULL;
}
}
if (!TopLevelRecord) {
TopLevelRecord = RD;
}
if (RD->getName().empty()) {
ReportTypeError(Diags, NULL, RD,
"anonymous structures cannot be exported");
return NULL;
}
// Fast check
if (RD->hasFlexibleArrayMember() || RD->hasObjectMember())
return NULL;
// Insert myself into checking set
SPS.insert(T);
// Check all element
for (clang::RecordDecl::field_iterator FI = RD->field_begin(),
FE = RD->field_end();
FI != FE;
FI++) {
const clang::FieldDecl *FD = *FI;
const clang::Type *FT = RSExportType::GetTypeOfDecl(FD);
FT = GET_CANONICAL_TYPE(FT);
if (!TypeExportableHelper(FT, SPS, Diags, VD, TopLevelRecord)) {
return NULL;
}
// We don't support bit fields yet
//
// TODO(zonr/srhines): allow bit fields of size 8, 16, 32
if (FD->isBitField()) {
if (Diags) {
Diags->Report(clang::FullSourceLoc(FD->getLocation(),
Diags->getSourceManager()),
Diags->getCustomDiagID(clang::Diagnostic::Error,
"bit fields are not able to be exported: '%0.%1'"))
<< RD->getName()
<< FD->getName();
}
return NULL;
}
}
return T;
}
case clang::Type::Pointer: {
if (TopLevelRecord) {
ReportTypeError(Diags, NULL, TopLevelRecord,
"structures containing pointers cannot be exported: '%0'");
return NULL;
}
const clang::PointerType *PT =
UNSAFE_CAST_TYPE(const clang::PointerType, T);
const clang::Type *PointeeType = GET_POINTEE_TYPE(PT);
if (PointeeType->getTypeClass() == clang::Type::Pointer)
return T;
// We don't support pointer with array-type pointee or unsupported pointee
// type
if (PointeeType->isArrayType() ||
(TypeExportableHelper(PointeeType, SPS, Diags, VD,
TopLevelRecord) == NULL))
return NULL;
else
return T;
}
case clang::Type::ExtVector: {
const clang::ExtVectorType *EVT =
UNSAFE_CAST_TYPE(const clang::ExtVectorType, T);
// Only vector with size 2, 3 and 4 are supported.
if (EVT->getNumElements() < 2 || EVT->getNumElements() > 4)
return NULL;
// Check base element type
const clang::Type *ElementType = GET_EXT_VECTOR_ELEMENT_TYPE(EVT);
if ((ElementType->getTypeClass() != clang::Type::Builtin) ||
(TypeExportableHelper(ElementType, SPS, Diags, VD,
TopLevelRecord) == NULL))
return NULL;
else
return T;
}
case clang::Type::ConstantArray: {
const clang::ConstantArrayType *CAT =
UNSAFE_CAST_TYPE(const clang::ConstantArrayType, T);
return ConstantArrayTypeExportableHelper(CAT, SPS, Diags, VD,
TopLevelRecord);
}
default: {
return NULL;
}
}
}
// Return the type that can be used to create RSExportType, will always return
// the canonical type
// If the Type T is not exportable, this function returns NULL. Diags is
// used to generate proper Clang diagnostic messages when a
// non-exportable type is detected. TopLevelRecord is used to capture the
// highest struct (in the case of a nested hierarchy) for detecting other
// types that cannot be exported (mostly pointers within a struct).
static const clang::Type *TypeExportable(const clang::Type *T,
clang::Diagnostic *Diags,
const clang::VarDecl *VD) {
llvm::SmallPtrSet<const clang::Type*, 8> SPS =
llvm::SmallPtrSet<const clang::Type*, 8>();
return TypeExportableHelper(T, SPS, Diags, VD, NULL);
}
static bool ValidateVarDeclHelper(
clang::VarDecl *VD,
const clang::Type *&T,
llvm::SmallPtrSet<const clang::Type*, 8>& SPS,
clang::RecordDecl *UnionDecl) {
if ((T = GET_CANONICAL_TYPE(T)) == NULL)
return true;
if (SPS.count(T))
return true;
switch (T->getTypeClass()) {
case clang::Type::Record: {
if (RSExportPrimitiveType::GetRSSpecificType(T) !=
RSExportPrimitiveType::DataTypeUnknown) {
if (!UnionDecl) {
return true;
} else if (RSExportPrimitiveType::IsRSObjectType(T)) {
clang::ASTContext &C = VD->getASTContext();
ReportTypeError(&C.getDiagnostics(), VD, UnionDecl,
"unions containing RS object types are not allowed");
return false;
}
}
clang::RecordDecl *RD = NULL;
// Check internal struct
if (T->isUnionType()) {
RD = T->getAsUnionType()->getDecl();
UnionDecl = RD;
} else if (T->isStructureType()) {
RD = T->getAsStructureType()->getDecl();
} else {
slangAssert(false && "Unknown type cannot be exported");
return false;
}
if (RD != NULL) {
RD = RD->getDefinition();
if (RD == NULL) {
// FIXME
return true;
}
}
// Fast check
if (RD->hasFlexibleArrayMember() || RD->hasObjectMember())
return false;
// Insert myself into checking set
SPS.insert(T);
// Check all elements
for (clang::RecordDecl::field_iterator FI = RD->field_begin(),
FE = RD->field_end();
FI != FE;
FI++) {
const clang::FieldDecl *FD = *FI;
const clang::Type *FT = RSExportType::GetTypeOfDecl(FD);
FT = GET_CANONICAL_TYPE(FT);
if (!ValidateVarDeclHelper(VD, FT, SPS, UnionDecl)) {
return false;
}
}
return true;
}
case clang::Type::Builtin: {
break;
}
case clang::Type::Pointer: {
const clang::PointerType *PT =
UNSAFE_CAST_TYPE(const clang::PointerType, T);
const clang::Type *PointeeType = GET_POINTEE_TYPE(PT);
return ValidateVarDeclHelper(VD, PointeeType, SPS, UnionDecl);
}
case clang::Type::ExtVector: {
const clang::ExtVectorType *EVT =
UNSAFE_CAST_TYPE(const clang::ExtVectorType, T);
const clang::Type *ElementType = GET_EXT_VECTOR_ELEMENT_TYPE(EVT);
return ValidateVarDeclHelper(VD, ElementType, SPS, UnionDecl);
}
case clang::Type::ConstantArray: {
const clang::ConstantArrayType *CAT =
UNSAFE_CAST_TYPE(const clang::ConstantArrayType, T);
const clang::Type *ElementType = GET_CONSTANT_ARRAY_ELEMENT_TYPE(CAT);
return ValidateVarDeclHelper(VD, ElementType, SPS, UnionDecl);
}
default: {
break;
}
}
return true;
}
} // namespace
/****************************** RSExportType ******************************/
bool RSExportType::NormalizeType(const clang::Type *&T,
llvm::StringRef &TypeName,
clang::Diagnostic *Diags,
const clang::VarDecl *VD) {
if ((T = TypeExportable(T, Diags, VD)) == NULL) {
return false;
}
// Get type name
TypeName = RSExportType::GetTypeName(T);
if (TypeName.empty()) {
if (Diags) {
if (VD) {
Diags->Report(clang::FullSourceLoc(VD->getLocation(),
Diags->getSourceManager()),
Diags->getCustomDiagID(clang::Diagnostic::Error,
"anonymous types cannot "
"be exported"));
} else {
Diags->Report(Diags->getCustomDiagID(clang::Diagnostic::Error,
"anonymous types cannot "
"be exported"));
}
}
return false;
}
return true;
}
bool RSExportType::ValidateVarDecl(clang::VarDecl *VD) {
const clang::Type *T = VD->getType().getTypePtr();
llvm::SmallPtrSet<const clang::Type*, 8> SPS =
llvm::SmallPtrSet<const clang::Type*, 8>();
return ValidateVarDeclHelper(VD, T, SPS, NULL);
}
const clang::Type
*RSExportType::GetTypeOfDecl(const clang::DeclaratorDecl *DD) {
if (DD) {
clang::QualType T;
if (DD->getTypeSourceInfo())
T = DD->getTypeSourceInfo()->getType();
else
T = DD->getType();
if (T.isNull())
return NULL;
else
return T.getTypePtr();
}
return NULL;
}
llvm::StringRef RSExportType::GetTypeName(const clang::Type* T) {
T = GET_CANONICAL_TYPE(T);
if (T == NULL)
return llvm::StringRef();
switch (T->getTypeClass()) {
case clang::Type::Builtin: {
const clang::BuiltinType *BT =
UNSAFE_CAST_TYPE(const clang::BuiltinType, T);
switch (BT->getKind()) {
#define ENUM_SUPPORT_BUILTIN_TYPE(builtin_type, type, cname) \
case builtin_type: \
return cname; \
break;
#include "RSClangBuiltinEnums.inc"
default: {
slangAssert(false && "Unknown data type of the builtin");
break;
}
}
break;
}
case clang::Type::Record: {
clang::RecordDecl *RD;
if (T->isStructureType()) {
RD = T->getAsStructureType()->getDecl();
} else {
break;
}
llvm::StringRef Name = RD->getName();
if (Name.empty()) {
if (RD->getTypedefNameForAnonDecl() != NULL) {
Name = RD->getTypedefNameForAnonDecl()->getName();
}
if (Name.empty()) {
// Try to find a name from redeclaration (i.e. typedef)
for (clang::TagDecl::redecl_iterator RI = RD->redecls_begin(),
RE = RD->redecls_end();
RI != RE;
RI++) {
slangAssert(*RI != NULL && "cannot be NULL object");
Name = (*RI)->getName();
if (!Name.empty())
break;
}
}
}
return Name;
}
case clang::Type::Pointer: {
// "*" plus pointee name
const clang::Type *PT = GET_POINTEE_TYPE(T);
llvm::StringRef PointeeName;
if (NormalizeType(PT, PointeeName, NULL, NULL)) {
char *Name = new char[ 1 /* * */ + PointeeName.size() + 1 ];
Name[0] = '*';
memcpy(Name + 1, PointeeName.data(), PointeeName.size());
Name[PointeeName.size() + 1] = '\0';
return Name;
}
break;
}
case clang::Type::ExtVector: {
const clang::ExtVectorType *EVT =
UNSAFE_CAST_TYPE(const clang::ExtVectorType, T);
return RSExportVectorType::GetTypeName(EVT);
break;
}
case clang::Type::ConstantArray : {
// Construct name for a constant array is too complicated.
return DUMMY_TYPE_NAME_FOR_RS_CONSTANT_ARRAY_TYPE;
}
default: {
break;
}
}
return llvm::StringRef();
}
RSExportType *RSExportType::Create(RSContext *Context,
const clang::Type *T,
const llvm::StringRef &TypeName) {
// Lookup the context to see whether the type was processed before.
// Newly created RSExportType will insert into context
// in RSExportType::RSExportType()
RSContext::export_type_iterator ETI = Context->findExportType(TypeName);
if (ETI != Context->export_types_end())
return ETI->second;
RSExportType *ET = NULL;
switch (T->getTypeClass()) {
case clang::Type::Record: {
RSExportPrimitiveType::DataType dt =
RSExportPrimitiveType::GetRSSpecificType(TypeName);
switch (dt) {
case RSExportPrimitiveType::DataTypeUnknown: {
// User-defined types
ET = RSExportRecordType::Create(Context,
T->getAsStructureType(),
TypeName);
break;
}
case RSExportPrimitiveType::DataTypeRSMatrix2x2: {
// 2 x 2 Matrix type
ET = RSExportMatrixType::Create(Context,
T->getAsStructureType(),
TypeName,
2);
break;
}
case RSExportPrimitiveType::DataTypeRSMatrix3x3: {
// 3 x 3 Matrix type
ET = RSExportMatrixType::Create(Context,
T->getAsStructureType(),
TypeName,
3);
break;
}
case RSExportPrimitiveType::DataTypeRSMatrix4x4: {
// 4 x 4 Matrix type
ET = RSExportMatrixType::Create(Context,
T->getAsStructureType(),
TypeName,
4);
break;
}
default: {
// Others are primitive types
ET = RSExportPrimitiveType::Create(Context, T, TypeName);
break;
}
}
break;
}
case clang::Type::Builtin: {
ET = RSExportPrimitiveType::Create(Context, T, TypeName);
break;
}
case clang::Type::Pointer: {
ET = RSExportPointerType::Create(Context,
UNSAFE_CAST_TYPE(const clang::PointerType, T), TypeName);
// FIXME: free the name (allocated in RSExportType::GetTypeName)
delete [] TypeName.data();
break;
}
case clang::Type::ExtVector: {
ET = RSExportVectorType::Create(Context,
UNSAFE_CAST_TYPE(const clang::ExtVectorType, T), TypeName);
break;
}
case clang::Type::ConstantArray: {
ET = RSExportConstantArrayType::Create(
Context,
UNSAFE_CAST_TYPE(const clang::ConstantArrayType, T));
break;
}
default: {
clang::Diagnostic *Diags = Context->getDiagnostics();
Diags->Report(Diags->getCustomDiagID(clang::Diagnostic::Error,
"unknown type cannot be exported: '%0'"))
<< T->getTypeClassName();
break;
}
}
return ET;
}
RSExportType *RSExportType::Create(RSContext *Context, const clang::Type *T) {
llvm::StringRef TypeName;
if (NormalizeType(T, TypeName, Context->getDiagnostics(), NULL))
return Create(Context, T, TypeName);
else
return NULL;
}
RSExportType *RSExportType::CreateFromDecl(RSContext *Context,
const clang::VarDecl *VD) {
return RSExportType::Create(Context, GetTypeOfDecl(VD));
}
size_t RSExportType::GetTypeStoreSize(const RSExportType *ET) {
return ET->getRSContext()->getTargetData()->getTypeStoreSize(
ET->getLLVMType());
}
size_t RSExportType::GetTypeAllocSize(const RSExportType *ET) {
if (ET->getClass() == RSExportType::ExportClassRecord)
return static_cast<const RSExportRecordType*>(ET)->getAllocSize();
else
return ET->getRSContext()->getTargetData()->getTypeAllocSize(
ET->getLLVMType());
}
RSExportType::RSExportType(RSContext *Context,
ExportClass Class,
const llvm::StringRef &Name)
: RSExportable(Context, RSExportable::EX_TYPE),
mClass(Class),
// Make a copy on Name since memory stored @Name is either allocated in
// ASTContext or allocated in GetTypeName which will be destroyed later.
mName(Name.data(), Name.size()),
mLLVMType(NULL),
mSpecType(NULL) {
// Don't cache the type whose name start with '<'. Those type failed to
// get their name since constructing their name in GetTypeName() requiring
// complicated work.
if (!Name.startswith(DUMMY_RS_TYPE_NAME_PREFIX))
// TODO(zonr): Need to check whether the insertion is successful or not.
Context->insertExportType(llvm::StringRef(Name), this);
return;
}
bool RSExportType::keep() {
if (!RSExportable::keep())
return false;
// Invalidate converted LLVM type.
mLLVMType = NULL;
return true;
}
bool RSExportType::equals(const RSExportable *E) const {
CHECK_PARENT_EQUALITY(RSExportable, E);
return (static_cast<const RSExportType*>(E)->getClass() == getClass());
}
RSExportType::~RSExportType() {
delete mSpecType;
}
/************************** RSExportPrimitiveType **************************/
llvm::ManagedStatic<RSExportPrimitiveType::RSSpecificTypeMapTy>
RSExportPrimitiveType::RSSpecificTypeMap;
llvm::Type *RSExportPrimitiveType::RSObjectLLVMType = NULL;
bool RSExportPrimitiveType::IsPrimitiveType(const clang::Type *T) {
if ((T != NULL) && (T->getTypeClass() == clang::Type::Builtin))
return true;
else
return false;
}
RSExportPrimitiveType::DataType
RSExportPrimitiveType::GetRSSpecificType(const llvm::StringRef &TypeName) {
if (TypeName.empty())
return DataTypeUnknown;
if (RSSpecificTypeMap->empty()) {
#define ENUM_RS_MATRIX_TYPE(type, cname, dim) \
RSSpecificTypeMap->GetOrCreateValue(cname, DataType ## type);
#include "RSMatrixTypeEnums.inc"
#define ENUM_RS_OBJECT_TYPE(type, cname) \
RSSpecificTypeMap->GetOrCreateValue(cname, DataType ## type);
#include "RSObjectTypeEnums.inc"
}
RSSpecificTypeMapTy::const_iterator I = RSSpecificTypeMap->find(TypeName);
if (I == RSSpecificTypeMap->end())
return DataTypeUnknown;
else
return I->getValue();
}
RSExportPrimitiveType::DataType
RSExportPrimitiveType::GetRSSpecificType(const clang::Type *T) {
T = GET_CANONICAL_TYPE(T);
if ((T == NULL) || (T->getTypeClass() != clang::Type::Record))
return DataTypeUnknown;
return GetRSSpecificType( RSExportType::GetTypeName(T) );
}
bool RSExportPrimitiveType::IsRSMatrixType(DataType DT) {
return ((DT >= FirstRSMatrixType) && (DT <= LastRSMatrixType));
}
bool RSExportPrimitiveType::IsRSObjectType(DataType DT) {
return ((DT >= FirstRSObjectType) && (DT <= LastRSObjectType));
}
bool RSExportPrimitiveType::IsStructureTypeWithRSObject(const clang::Type *T) {
bool RSObjectTypeSeen = false;
while (T && T->isArrayType()) {
T = T->getArrayElementTypeNoTypeQual();
}
const clang::RecordType *RT = T->getAsStructureType();
if (!RT) {
return false;
}
const clang::RecordDecl *RD = RT->getDecl();
RD = RD->getDefinition();
for (clang::RecordDecl::field_iterator FI = RD->field_begin(),
FE = RD->field_end();
FI != FE;
FI++) {
// We just look through all field declarations to see if we find a
// declaration for an RS object type (or an array of one).
const clang::FieldDecl *FD = *FI;
const clang::Type *FT = RSExportType::GetTypeOfDecl(FD);
while (FT && FT->isArrayType()) {
FT = FT->getArrayElementTypeNoTypeQual();
}
RSExportPrimitiveType::DataType DT = GetRSSpecificType(FT);
if (IsRSObjectType(DT)) {
// RS object types definitely need to be zero-initialized
RSObjectTypeSeen = true;
} else {
switch (DT) {
case RSExportPrimitiveType::DataTypeRSMatrix2x2:
case RSExportPrimitiveType::DataTypeRSMatrix3x3:
case RSExportPrimitiveType::DataTypeRSMatrix4x4:
// Matrix types should get zero-initialized as well
RSObjectTypeSeen = true;
break;
default:
// Ignore all other primitive types
break;
}
while (FT && FT->isArrayType()) {
FT = FT->getArrayElementTypeNoTypeQual();
}
if (FT->isStructureType()) {
// Recursively handle structs of structs (even though these can't
// be exported, it is possible for a user to have them internally).
RSObjectTypeSeen |= IsStructureTypeWithRSObject(FT);
}
}
}
return RSObjectTypeSeen;
}
const size_t RSExportPrimitiveType::SizeOfDataTypeInBits[] = {
#define ENUM_RS_DATA_TYPE(type, cname, bits) \
bits,
#include "RSDataTypeEnums.inc"
0 // DataTypeMax
};
size_t RSExportPrimitiveType::GetSizeInBits(const RSExportPrimitiveType *EPT) {
slangAssert(((EPT->getType() > DataTypeUnknown) &&
(EPT->getType() < DataTypeMax)) &&
"RSExportPrimitiveType::GetSizeInBits : unknown data type");
return SizeOfDataTypeInBits[ static_cast<int>(EPT->getType()) ];
}
RSExportPrimitiveType::DataType
RSExportPrimitiveType::GetDataType(RSContext *Context, const clang::Type *T) {
if (T == NULL)
return DataTypeUnknown;
switch (T->getTypeClass()) {
case clang::Type::Builtin: {
const clang::BuiltinType *BT =
UNSAFE_CAST_TYPE(const clang::BuiltinType, T);
switch (BT->getKind()) {
#define ENUM_SUPPORT_BUILTIN_TYPE(builtin_type, type, cname) \
case builtin_type: { \
return DataType ## type; \
}
#include "RSClangBuiltinEnums.inc"
// The size of type WChar depend on platform so we abandon the support
// to them.
default: {
clang::Diagnostic *Diags = Context->getDiagnostics();
Diags->Report(Diags->getCustomDiagID(clang::Diagnostic::Error,
"built-in type cannot be exported: '%0'"))
<< T->getTypeClassName();
break;
}
}
break;
}
case clang::Type::Record: {
// must be RS object type
return RSExportPrimitiveType::GetRSSpecificType(T);
}
default: {
clang::Diagnostic *Diags = Context->getDiagnostics();
Diags->Report(Diags->getCustomDiagID(clang::Diagnostic::Error,
"primitive type cannot be exported: '%0'"))
<< T->getTypeClassName();
break;
}
}
return DataTypeUnknown;
}
RSExportPrimitiveType
*RSExportPrimitiveType::Create(RSContext *Context,
const clang::Type *T,
const llvm::StringRef &TypeName,
DataKind DK,
bool Normalized) {
DataType DT = GetDataType(Context, T);
if ((DT == DataTypeUnknown) || TypeName.empty())
return NULL;
else
return new RSExportPrimitiveType(Context, ExportClassPrimitive, TypeName,
DT, DK, Normalized);
}
RSExportPrimitiveType *RSExportPrimitiveType::Create(RSContext *Context,
const clang::Type *T,
DataKind DK) {
llvm::StringRef TypeName;
if (RSExportType::NormalizeType(T, TypeName, Context->getDiagnostics(), NULL)
&& IsPrimitiveType(T)) {
return Create(Context, T, TypeName, DK);
} else {
return NULL;
}
}
llvm::Type *RSExportPrimitiveType::convertToLLVMType() const {
llvm::LLVMContext &C = getRSContext()->getLLVMContext();
if (isRSObjectType()) {
// struct {
// int *p;
// } __attribute__((packed, aligned(pointer_size)))
//
// which is
//
// <{ [1 x i32] }> in LLVM
//
if (RSObjectLLVMType == NULL) {
std::vector<llvm::Type *> Elements;
Elements.push_back(llvm::ArrayType::get(llvm::Type::getInt32Ty(C), 1));
RSObjectLLVMType = llvm::StructType::get(C, Elements, true);
}
return RSObjectLLVMType;
}
switch (mType) {
case DataTypeFloat32: {
return llvm::Type::getFloatTy(C);
break;
}
case DataTypeFloat64: {
return llvm::Type::getDoubleTy(C);
break;
}
case DataTypeBoolean: {
return llvm::Type::getInt1Ty(C);
break;
}
case DataTypeSigned8:
case DataTypeUnsigned8: {
return llvm::Type::getInt8Ty(C);
break;
}
case DataTypeSigned16:
case DataTypeUnsigned16:
case DataTypeUnsigned565:
case DataTypeUnsigned5551:
case DataTypeUnsigned4444: {
return llvm::Type::getInt16Ty(C);
break;
}
case DataTypeSigned32:
case DataTypeUnsigned32: {
return llvm::Type::getInt32Ty(C);
break;
}
case DataTypeSigned64:
case DataTypeUnsigned64: {
return llvm::Type::getInt64Ty(C);
break;
}
default: {
slangAssert(false && "Unknown data type");
}
}
return NULL;
}
union RSType *RSExportPrimitiveType::convertToSpecType() const {
llvm::OwningPtr<union RSType> ST(new union RSType);
RS_TYPE_SET_CLASS(ST, RS_TC_Primitive);
// enum RSExportPrimitiveType::DataType is synced with enum RSDataType in
// slang_rs_type_spec.h
RS_PRIMITIVE_TYPE_SET_DATA_TYPE(ST, getType());
return ST.take();
}
bool RSExportPrimitiveType::equals(const RSExportable *E) const {
CHECK_PARENT_EQUALITY(RSExportType, E);
return (static_cast<const RSExportPrimitiveType*>(E)->getType() == getType());
}
/**************************** RSExportPointerType ****************************/
RSExportPointerType
*RSExportPointerType::Create(RSContext *Context,
const clang::PointerType *PT,
const llvm::StringRef &TypeName) {
const clang::Type *PointeeType = GET_POINTEE_TYPE(PT);
const RSExportType *PointeeET;
if (PointeeType->getTypeClass() != clang::Type::Pointer) {
PointeeET = RSExportType::Create(Context, PointeeType);
} else {
// Double or higher dimension of pointer, export as int*
PointeeET = RSExportPrimitiveType::Create(Context,
Context->getASTContext().IntTy.getTypePtr());
}
if (PointeeET == NULL) {
// Error diagnostic is emitted for corresponding pointee type
return NULL;
}
return new RSExportPointerType(Context, TypeName, PointeeET);
}
llvm::Type *RSExportPointerType::convertToLLVMType() const {
llvm::Type *PointeeType = mPointeeType->getLLVMType();
return llvm::PointerType::getUnqual(PointeeType);
}
union RSType *RSExportPointerType::convertToSpecType() const {
llvm::OwningPtr<union RSType> ST(new union RSType);
RS_TYPE_SET_CLASS(ST, RS_TC_Pointer);
RS_POINTER_TYPE_SET_POINTEE_TYPE(ST, getPointeeType()->getSpecType());
if (RS_POINTER_TYPE_GET_POINTEE_TYPE(ST) != NULL)
return ST.take();
else
return NULL;
}
bool RSExportPointerType::keep() {
if (!RSExportType::keep())
return false;
const_cast<RSExportType*>(mPointeeType)->keep();
return true;
}
bool RSExportPointerType::equals(const RSExportable *E) const {
CHECK_PARENT_EQUALITY(RSExportType, E);