https://github.com/vortex73 updated
https://github.com/llvm/llvm-project/pull/140112
>From 322c1cfb925f3073f3d3b30abe1b2e35ae7745f3 Mon Sep 17 00:00:00 2001
From: Narayan Sreekumar <nsreekum...@gmail.com>
Date: Thu, 15 May 2025 23:13:50 +0530
Subject: [PATCH 1/5] [LLVM ABI] The Typesystem
---
llvm/include/llvm/ABI/Types.h | 121 ++++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
create mode 100644 llvm/include/llvm/ABI/Types.h
diff --git a/llvm/include/llvm/ABI/Types.h b/llvm/include/llvm/ABI/Types.h
new file mode 100644
index 0000000000000..443a6c1eab4e7
--- /dev/null
+++ b/llvm/include/llvm/ABI/Types.h
@@ -0,0 +1,121 @@
+#ifndef LLVM_ABI_TYPES_H
+#define LLVM_ABI_TYPES_H
+
+#include <cstdint>
+#include <memory>
+#include <string>
+
+namespace llvm {
+namespace abi {
+
+enum class TypeKind {
+ Void,
+ Integer,
+ Float,
+ Pointer,
+ Array,
+ Vector,
+ Struct,
+ Union,
+ Function
+};
+class Type {
+protected:
+ TypeKind Kind;
+ uint64_t SizeInBits;
+ uint64_t AlignInBits;
+ bool IsExplicitlyAligned;
+
+ Type(TypeKind K, uint64_t Size, uint64_t Align, bool ExplicitAlign = false)
+ : Kind(K), SizeInBits(Size), AlignInBits(Align),
+ IsExplicitlyAligned(ExplicitAlign) {}
+
+public:
+ virtual ~Type() = default;
+
+ TypeKind getKind() const { return Kind; }
+ uint64_t getSizeInBits() const { return SizeInBits; }
+ uint64_t getAlignInBits() const { return AlignInBits; }
+ bool hasExplicitAlignment() const { return IsExplicitlyAligned; }
+
+ void setExplicitAlignment(uint64_t Align) {
+ AlignInBits = Align;
+ IsExplicitlyAligned = true;
+ }
+
+ bool isVoid() const { return Kind == TypeKind::Void; }
+ bool isInteger() const { return Kind == TypeKind::Integer; }
+ bool isFloat() const { return Kind == TypeKind::Float; }
+ bool isPointer() const { return Kind == TypeKind::Pointer; }
+ bool isArray() const { return Kind == TypeKind::Array; }
+ bool isVector() const { return Kind == TypeKind::Vector; }
+ bool isStruct() const { return Kind == TypeKind::Struct; }
+ bool isUnion() const { return Kind == TypeKind::Union; }
+ bool isFunction() const { return Kind == TypeKind::Function; }
+
+ static bool classof(const Type *) { return true; }
+};
+class VoidType : public Type {
+public:
+ VoidType() : Type(TypeKind::Void, 0, 0) {}
+
+ static bool classof(const Type *T) { return T->getKind() == TypeKind::Void; }
+};
+
+class IntegerType : public Type {
+private:
+ bool IsSigned;
+ bool IsAltRepresentation;
+ std::string TypeName;
+
+public:
+ IntegerType(uint64_t BitWidth, uint64_t Align, bool Signed,
+ bool AltRep = false, const std::string &Name = "")
+ : Type(TypeKind::Integer, BitWidth, Align), IsSigned(Signed),
+ IsAltRepresentation(AltRep), TypeName(Name) {}
+
+ bool isSigned() const { return IsSigned; }
+ bool isAltRepresentation() const { return IsAltRepresentation; }
+ const std::string &getTypeName() const { return TypeName; }
+
+ static bool classof(const Type *T) {
+ return T->getKind() == TypeKind::Integer;
+ }
+};
+class FloatType : public Type {
+private:
+ std::string TypeName;
+
+public:
+ FloatType(uint64_t BitWidth, uint64_t Align, const std::string &Name)
+ : Type(TypeKind::Float, BitWidth, Align), TypeName(Name) {}
+
+ const std::string &getTypeName() const { return TypeName; }
+
+ static bool classof(const Type *T) { return T->getKind() == TypeKind::Float;
}
+};
+class PointerType : public Type {
+private:
+ std::unique_ptr<Type> PointeeType;
+ bool IsConst;
+ bool IsVolatile;
+
+public:
+ PointerType(std::unique_ptr<Type> Pointee, uint64_t Size, uint64_t Align,
+ bool Const = false, bool Volatile = false)
+ : Type(TypeKind::Pointer, Size, Align), PointeeType(std::move(Pointee)),
+ IsConst(Const), IsVolatile(Volatile) {}
+
+ const Type *getPointeeType() const { return PointeeType.get(); }
+ bool isConst() const { return IsConst; }
+ bool isVolatile() const { return IsVolatile; }
+
+ static bool classof(const Type *T) {
+ return T->getKind() == TypeKind::Pointer;
+ }
+};
+
+} // namespace abi
+} // namespace llvm
+
+#endif
>From 0858b1f327c7a49c2e2825124a8d5cabbd8654fd Mon Sep 17 00:00:00 2001
From: Narayan Sreekumar <nsreekum...@gmail.com>
Date: Fri, 23 May 2025 17:53:53 +0530
Subject: [PATCH 2/5] [LLVMABI] API for Creating types
---
llvm/include/llvm/ABI/Types.h | 244 +++++++++++++++++++++++++++++-----
1 file changed, 213 insertions(+), 31 deletions(-)
diff --git a/llvm/include/llvm/ABI/Types.h b/llvm/include/llvm/ABI/Types.h
index 443a6c1eab4e7..84cb586832dbd 100644
--- a/llvm/include/llvm/ABI/Types.h
+++ b/llvm/include/llvm/ABI/Types.h
@@ -1,9 +1,9 @@
#ifndef LLVM_ABI_TYPES_H
#define LLVM_ABI_TYPES_H
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/Allocator.h"
#include <cstdint>
-#include <memory>
-#include <string>
namespace llvm {
namespace abi {
@@ -19,6 +19,7 @@ enum class TypeKind {
Union,
Function
};
+
class Type {
protected:
TypeKind Kind;
@@ -31,8 +32,6 @@ class Type {
IsExplicitlyAligned(ExplicitAlign) {}
public:
- virtual ~Type() = default;
-
TypeKind getKind() const { return Kind; }
uint64_t getSizeInBits() const { return SizeInBits; }
uint64_t getAlignInBits() const { return AlignInBits; }
@@ -52,9 +51,8 @@ class Type {
bool isStruct() const { return Kind == TypeKind::Struct; }
bool isUnion() const { return Kind == TypeKind::Union; }
bool isFunction() const { return Kind == TypeKind::Function; }
-
- static bool classof(const Type *) { return true; }
};
+
class VoidType : public Type {
public:
VoidType() : Type(TypeKind::Void, 0, 0) {}
@@ -65,53 +63,237 @@ class VoidType : public Type {
class IntegerType : public Type {
private:
bool IsSigned;
- bool IsAltRepresentation;
- std::string TypeName;
public:
- IntegerType(uint64_t BitWidth, uint64_t Align, bool Signed,
- bool AltRep = false, const std::string &Name = "")
- : Type(TypeKind::Integer, BitWidth, Align), IsSigned(Signed),
- IsAltRepresentation(AltRep), TypeName(Name) {}
+ IntegerType(uint64_t BitWidth, uint64_t Align, bool Signed)
+ : Type(TypeKind::Integer, BitWidth, Align), IsSigned(Signed) {}
bool isSigned() const { return IsSigned; }
- bool isAltRepresentation() const { return IsAltRepresentation; }
- const std::string &getTypeName() const { return TypeName; }
static bool classof(const Type *T) {
return T->getKind() == TypeKind::Integer;
}
};
+
class FloatType : public Type {
+public:
+ FloatType(uint64_t BitWidth, uint64_t Align)
+ : Type(TypeKind::Float, BitWidth, Align) {}
+
+ static bool classof(const Type *T) { return T->getKind() == TypeKind::Float;
}
+};
+
+class PointerType : public Type {
+public:
+ PointerType(uint64_t Size, uint64_t Align)
+ : Type(TypeKind::Pointer, Size, Align) {}
+
+ static bool classof(const Type *T) {
+ return T->getKind() == TypeKind::Pointer;
+ }
+};
+
+class ArrayType : public Type {
private:
- std::string TypeName;
+ const Type *ElementType;
+ uint64_t NumElements;
public:
- FloatType(uint64_t BitWidth, uint64_t Align, const std::string &Name)
- : Type(TypeKind::Float, BitWidth, Align), TypeName(Name) {}
+ ArrayType(const Type *ElemType, uint64_t NumElems)
+ : Type(TypeKind::Array, ElemType->getSizeInBits() * NumElems,
+ ElemType->getAlignInBits()),
+ ElementType(ElemType), NumElements(NumElems) {}
- const std::string &getTypeName() const { return TypeName; }
+ const Type *getElementType() const { return ElementType; }
+ uint64_t getNumElements() const { return NumElements; }
- static bool classof(const Type *T) { return T->getKind() == TypeKind::Float;
}
+ static bool classof(const Type *T) { return T->getKind() == TypeKind::Array;
}
};
-class PointerType : public Type {
+
+class VectorType : public Type {
private:
- std::unique_ptr<Type> PointeeType;
- bool IsConst;
- bool IsVolatile;
+ const Type *ElementType;
+ uint64_t NumElements;
public:
- PointerType(std::unique_ptr<Type> Pointee, uint64_t Size, uint64_t Align,
- bool Const = false, bool Volatile = false)
- : Type(TypeKind::Pointer, Size, Align), PointeeType(std::move(Pointee)),
- IsConst(Const), IsVolatile(Volatile) {}
+ VectorType(const Type *ElemType, uint64_t NumElems, uint64_t Align)
+ : Type(TypeKind::Vector, ElemType->getSizeInBits() * NumElems, Align),
+ ElementType(ElemType), NumElements(NumElems) {}
- const Type *getPointeeType() const { return PointeeType.get(); }
- bool isConst() const { return IsConst; }
- bool isVolatile() const { return IsVolatile; }
+ const Type *getElementType() const { return ElementType; }
+ uint64_t getNumElements() const { return NumElements; }
static bool classof(const Type *T) {
- return T->getKind() == TypeKind::Pointer;
+ return T->getKind() == TypeKind::Vector;
+ }
+};
+
+struct FieldInfo {
+ const Type *FieldType;
+ uint64_t OffsetInBits;
+ bool IsBitField;
+ uint64_t BitFieldWidth;
+
+ FieldInfo(const Type *Type, uint64_t Offset = 0, bool BitField = false,
+ uint64_t BFWidth = 0)
+ : FieldType(Type), OffsetInBits(Offset), IsBitField(BitField),
+ BitFieldWidth(BFWidth) {}
+};
+
+enum class StructPacking { Default, Packed, ExplicitPacking };
+
+class StructType : public Type {
+private:
+ const FieldInfo *Fields;
+ uint32_t NumFields;
+ StructPacking Packing;
+
+public:
+ StructType(const FieldInfo *StructFields, uint32_t FieldCount, uint64_t Size,
+ uint64_t Align, StructPacking Pack = StructPacking::Default)
+ : Type(TypeKind::Struct, Size, Align), Fields(StructFields),
+ NumFields(FieldCount), Packing(Pack) {}
+
+ const FieldInfo *getFields() const { return Fields; }
+ uint32_t getNumFields() const { return NumFields; }
+ StructPacking getPacking() const { return Packing; }
+
+ static bool classof(const Type *T) {
+ return T->getKind() == TypeKind::Struct;
+ }
+};
+
+class UnionType : public Type {
+private:
+ const FieldInfo *Fields;
+ uint32_t NumFields;
+ StructPacking Packing;
+
+public:
+ UnionType(const FieldInfo *UnionFields, uint32_t FieldCount, uint64_t Size,
+ uint64_t Align, StructPacking Pack = StructPacking::Default)
+ : Type(TypeKind::Union, Size, Align), Fields(UnionFields),
+ NumFields(FieldCount), Packing(Pack) {}
+
+ const FieldInfo *getFields() const { return Fields; }
+ uint32_t getNumFields() const { return NumFields; }
+ StructPacking getPacking() const { return Packing; }
+
+ static bool classof(const Type *T) { return T->getKind() == TypeKind::Union;
}
+};
+
+enum class CallConv {
+ C,
+ // TODO: extend for more CallConvs
+};
+
+class FunctionType : public Type {
+private:
+ const Type *ReturnType;
+ const Type *const *ParameterTypes;
+ uint32_t NumParams;
+ bool IsVarArg;
+ CallConv CC;
+
+public:
+ FunctionType(const Type *RetType, const Type *const *ParamTypes,
+ uint32_t ParamCount, bool VarArgs, CallConv CallConv)
+ : Type(TypeKind::Function, 0, 0), ReturnType(RetType),
+ ParameterTypes(ParamTypes), NumParams(ParamCount), IsVarArg(VarArgs),
+ CC(CallConv) {}
+
+ const Type *getReturnType() const { return ReturnType; }
+ const Type *const *getParameterTypes() const { return ParameterTypes; }
+ uint32_t getNumParameters() const { return NumParams; }
+ const Type *getParameterType(uint32_t Index) const {
+ assert(Index < NumParams && "Parameter index out of bounds");
+ return ParameterTypes[Index];
+ }
+ bool isVarArg() const { return IsVarArg; }
+ CallConv getCallingConv() const { return CC; }
+
+ static bool classof(const Type *T) {
+ return T->getKind() == TypeKind::Function;
+ }
+};
+
+// API for creating ABI Types
+class TypeBuilder {
+private:
+ BumpPtrAllocator &Allocator;
+
+public:
+ explicit TypeBuilder(BumpPtrAllocator &Alloc) : Allocator(Alloc) {}
+
+ const VoidType *getVoidType() {
+ return new (Allocator.Allocate<VoidType>()) VoidType();
+ }
+
+ const IntegerType *getIntegerType(uint64_t BitWidth, uint64_t Align,
+ bool Signed) {
+ return new (Allocator.Allocate<IntegerType>())
+ IntegerType(BitWidth, Align, Signed);
+ }
+
+ const FloatType *getFloatType(uint64_t BitWidth, uint64_t Align) {
+ return new (Allocator.Allocate<FloatType>()) FloatType(BitWidth, Align);
+ }
+
+ const PointerType *getPointerType(uint64_t Size, uint64_t Align) {
+ return new (Allocator.Allocate<PointerType>()) PointerType(Size, Align);
+ }
+
+ const ArrayType *getArrayType(const Type *ElementType, uint64_t NumElements)
{
+ return new (Allocator.Allocate<ArrayType>())
+ ArrayType(ElementType, NumElements);
+ }
+
+ const VectorType *getVectorType(const Type *ElementType, uint64_t
NumElements,
+ uint64_t Align) {
+ return new (Allocator.Allocate<VectorType>())
+ VectorType(ElementType, NumElements, Align);
+ }
+
+ const StructType *getStructType(ArrayRef<FieldInfo> Fields, uint64_t Size,
+ uint64_t Align,
+ StructPacking Pack = StructPacking::Default)
{
+ FieldInfo *FieldArray = Allocator.Allocate<FieldInfo>(Fields.size());
+
+ for (size_t I = 0; I < Fields.size(); ++I) {
+ new (&FieldArray[I]) FieldInfo(Fields[I]);
+ }
+
+ return new (Allocator.Allocate<StructType>()) StructType(
+ FieldArray, static_cast<uint32_t>(Fields.size()), Size, Align, Pack);
+ }
+
+ const UnionType *getUnionType(ArrayRef<FieldInfo> Fields, uint64_t Size,
+ uint64_t Align,
+ StructPacking Pack = StructPacking::Default) {
+ FieldInfo *FieldArray = Allocator.Allocate<FieldInfo>(Fields.size());
+
+ for (size_t I = 0; I < Fields.size(); ++I) {
+ new (&FieldArray[I]) FieldInfo(Fields[I]);
+ }
+
+ return new (Allocator.Allocate<UnionType>()) UnionType(
+ FieldArray, static_cast<uint32_t>(Fields.size()), Size, Align, Pack);
+ }
+
+ const FunctionType *getFunctionType(const Type *ReturnType,
+ ArrayRef<const Type *> ParamTypes,
+ bool IsVarArg,
+ CallConv CC = CallConv::C) {
+ const Type **ParamArray =
+ Allocator.Allocate<const Type *>(ParamTypes.size());
+
+ for (size_t I = 0; I < ParamTypes.size(); ++I) {
+ ParamArray[I] = ParamTypes[I];
+ }
+
+ return new (Allocator.Allocate<FunctionType>())
+ FunctionType(ReturnType, ParamArray,
+ static_cast<uint32_t>(ParamTypes.size()), IsVarArg, CC);
}
};
>From 114cab7c06c080bf9661c31f405b39b2a8575d6d Mon Sep 17 00:00:00 2001
From: Narayan Sreekumar <nsreekum...@gmail.com>
Date: Tue, 27 May 2025 03:07:20 +0530
Subject: [PATCH 3/5] [LLVMABI] Mapper Interface
---
llvm/include/llvm/ABI/QualTypeMapper.h | 52 +++++++++++
llvm/include/llvm/ABI/Types.h | 117 ++++++++-----------------
llvm/lib/ABI/CMakeLists.txt | 17 ++++
llvm/lib/ABI/QualTypeMapper.cpp | 16 ++++
llvm/lib/CMakeLists.txt | 1 +
5 files changed, 123 insertions(+), 80 deletions(-)
create mode 100644 llvm/include/llvm/ABI/QualTypeMapper.h
create mode 100644 llvm/lib/ABI/CMakeLists.txt
create mode 100644 llvm/lib/ABI/QualTypeMapper.cpp
diff --git a/llvm/include/llvm/ABI/QualTypeMapper.h
b/llvm/include/llvm/ABI/QualTypeMapper.h
new file mode 100644
index 0000000000000..f408325dad007
--- /dev/null
+++ b/llvm/include/llvm/ABI/QualTypeMapper.h
@@ -0,0 +1,52 @@
+#ifndef LLVM_ABI_QUALTYPE_MAPPER_H
+#define LLVM_ABI_QUALTYPE_MAPPER_H
+
+#include "llvm/Support/Allocator.h"
+#include <clang/AST/ASTContext.h>
+#include <clang/AST/Type.h>
+#include <llvm/ABI/Types.h>
+#include <llvm/ADT/DenseMap.h>
+
+namespace llvm {
+namespace abi {
+
+class QualTypeMapper {
+private:
+ clang::ASTContext &ASTCtx;
+ TypeBuilder Builder;
+
+ // llvm::DenseMap<clang::QualType , const Type*> TypeCache;
+
+ const Type *convertBuiltinType(const clang::BuiltinType *BT);
+ const Type *convertPointerType(const clang::PointerType *PT);
+ const Type *convertArrayType(const clang::ArrayType *AT);
+ const Type *convertVectorType(const clang::VectorType *VT);
+ const Type *convertRecordType(const clang::RecordType *RT);
+ const Type *convertFunctionType(const clang::FunctionProtoType *FT);
+ const Type *convertEnumType(const clang::EnumType *ET);
+
+ void computeRecordLayout(const clang::RecordDecl *RD,
+ llvm::SmallVectorImpl<FieldInfo> &Fields,
+ uint64_t &TotalSize, uint64_t &Alignment,
+ StructPacking &Packing);
+
+ uint64_t getTypeSize(clang::QualType QT) const;
+ uint64_t getTypeAlign(clang::QualType QT) const;
+ uint64_t getPointerSize() const;
+ uint64_t getPointerAlign() const;
+
+public:
+ explicit QualTypeMapper(clang::ASTContext &Ctx, BumpPtrAllocator &Alloc)
+ : ASTCtx(Ctx), Builder(Alloc) {}
+
+ const Type *convertType(clang::QualType QT);
+
+ // void clearCache() {TypeCache.clear();}
+
+ TypeBuilder getTypeBuilder() { return Builder; }
+};
+
+} // namespace abi
+} // namespace llvm
+
+#endif // !LLVM_ABI_QUALTYPE_MAPPER_H
diff --git a/llvm/include/llvm/ABI/Types.h b/llvm/include/llvm/ABI/Types.h
index 84cb586832dbd..e99bee35acf77 100644
--- a/llvm/include/llvm/ABI/Types.h
+++ b/llvm/include/llvm/ABI/Types.h
@@ -1,9 +1,13 @@
#ifndef LLVM_ABI_TYPES_H
#define LLVM_ABI_TYPES_H
+#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/Alignment.h"
#include "llvm/Support/Allocator.h"
+#include "llvm/Support/TypeSize.h"
#include <cstdint>
+#include <llvm/IR/CallingConv.h>
namespace llvm {
namespace abi {
@@ -17,27 +21,26 @@ enum class TypeKind {
Vector,
Struct,
Union,
- Function
};
class Type {
protected:
TypeKind Kind;
- uint64_t SizeInBits;
- uint64_t AlignInBits;
+ TypeSize SizeInBits;
+ Align AlignInBits;
bool IsExplicitlyAligned;
- Type(TypeKind K, uint64_t Size, uint64_t Align, bool ExplicitAlign = false)
+ Type(TypeKind K, TypeSize Size, Align Align, bool ExplicitAlign = false)
: Kind(K), SizeInBits(Size), AlignInBits(Align),
IsExplicitlyAligned(ExplicitAlign) {}
public:
TypeKind getKind() const { return Kind; }
- uint64_t getSizeInBits() const { return SizeInBits; }
- uint64_t getAlignInBits() const { return AlignInBits; }
+ TypeSize getSizeInBits() const { return SizeInBits; }
+ Align getAlignInBits() const { return AlignInBits; }
bool hasExplicitAlignment() const { return IsExplicitlyAligned; }
- void setExplicitAlignment(uint64_t Align) {
+ void setExplicitAlignment(Align Align) {
AlignInBits = Align;
IsExplicitlyAligned = true;
}
@@ -50,12 +53,11 @@ class Type {
bool isVector() const { return Kind == TypeKind::Vector; }
bool isStruct() const { return Kind == TypeKind::Struct; }
bool isUnion() const { return Kind == TypeKind::Union; }
- bool isFunction() const { return Kind == TypeKind::Function; }
};
class VoidType : public Type {
public:
- VoidType() : Type(TypeKind::Void, 0, 0) {}
+ VoidType() : Type(TypeKind::Void, TypeSize::getFixed(0), Align(1)) {}
static bool classof(const Type *T) { return T->getKind() == TypeKind::Void; }
};
@@ -65,8 +67,9 @@ class IntegerType : public Type {
bool IsSigned;
public:
- IntegerType(uint64_t BitWidth, uint64_t Align, bool Signed)
- : Type(TypeKind::Integer, BitWidth, Align), IsSigned(Signed) {}
+ IntegerType(uint64_t BitWidth, Align Align, bool Signed)
+ : Type(TypeKind::Integer, TypeSize::getFixed(BitWidth), Align),
+ IsSigned(Signed) {}
bool isSigned() const { return IsSigned; }
@@ -76,17 +79,22 @@ class IntegerType : public Type {
};
class FloatType : public Type {
+private:
+ const fltSemantics *Semantics;
+
public:
- FloatType(uint64_t BitWidth, uint64_t Align)
- : Type(TypeKind::Float, BitWidth, Align) {}
+ FloatType(const fltSemantics &FloatSemantics, Align Align)
+ : Type(TypeKind::Float,
+ TypeSize::getFixed(APFloat::getSizeInBits(FloatSemantics)),
Align),
+ Semantics(&FloatSemantics) {}
static bool classof(const Type *T) { return T->getKind() == TypeKind::Float;
}
};
class PointerType : public Type {
public:
- PointerType(uint64_t Size, uint64_t Align)
- : Type(TypeKind::Pointer, Size, Align) {}
+ PointerType(uint64_t Size, Align Align)
+ : Type(TypeKind::Pointer, TypeSize::getFixed(Size), Align) {}
static bool classof(const Type *T) {
return T->getKind() == TypeKind::Pointer;
@@ -116,7 +124,7 @@ class VectorType : public Type {
uint64_t NumElements;
public:
- VectorType(const Type *ElemType, uint64_t NumElems, uint64_t Align)
+ VectorType(const Type *ElemType, uint64_t NumElems, Align Align)
: Type(TypeKind::Vector, ElemType->getSizeInBits() * NumElems, Align),
ElementType(ElemType), NumElements(NumElems) {}
@@ -149,8 +157,8 @@ class StructType : public Type {
StructPacking Packing;
public:
- StructType(const FieldInfo *StructFields, uint32_t FieldCount, uint64_t Size,
- uint64_t Align, StructPacking Pack = StructPacking::Default)
+ StructType(const FieldInfo *StructFields, uint32_t FieldCount, TypeSize Size,
+ Align Align, StructPacking Pack = StructPacking::Default)
: Type(TypeKind::Struct, Size, Align), Fields(StructFields),
NumFields(FieldCount), Packing(Pack) {}
@@ -170,8 +178,8 @@ class UnionType : public Type {
StructPacking Packing;
public:
- UnionType(const FieldInfo *UnionFields, uint32_t FieldCount, uint64_t Size,
- uint64_t Align, StructPacking Pack = StructPacking::Default)
+ UnionType(const FieldInfo *UnionFields, uint32_t FieldCount, TypeSize Size,
+ Align Align, StructPacking Pack = StructPacking::Default)
: Type(TypeKind::Union, Size, Align), Fields(UnionFields),
NumFields(FieldCount), Packing(Pack) {}
@@ -182,41 +190,6 @@ class UnionType : public Type {
static bool classof(const Type *T) { return T->getKind() == TypeKind::Union;
}
};
-enum class CallConv {
- C,
- // TODO: extend for more CallConvs
-};
-
-class FunctionType : public Type {
-private:
- const Type *ReturnType;
- const Type *const *ParameterTypes;
- uint32_t NumParams;
- bool IsVarArg;
- CallConv CC;
-
-public:
- FunctionType(const Type *RetType, const Type *const *ParamTypes,
- uint32_t ParamCount, bool VarArgs, CallConv CallConv)
- : Type(TypeKind::Function, 0, 0), ReturnType(RetType),
- ParameterTypes(ParamTypes), NumParams(ParamCount), IsVarArg(VarArgs),
- CC(CallConv) {}
-
- const Type *getReturnType() const { return ReturnType; }
- const Type *const *getParameterTypes() const { return ParameterTypes; }
- uint32_t getNumParameters() const { return NumParams; }
- const Type *getParameterType(uint32_t Index) const {
- assert(Index < NumParams && "Parameter index out of bounds");
- return ParameterTypes[Index];
- }
- bool isVarArg() const { return IsVarArg; }
- CallConv getCallingConv() const { return CC; }
-
- static bool classof(const Type *T) {
- return T->getKind() == TypeKind::Function;
- }
-};
-
// API for creating ABI Types
class TypeBuilder {
private:
@@ -229,17 +202,17 @@ class TypeBuilder {
return new (Allocator.Allocate<VoidType>()) VoidType();
}
- const IntegerType *getIntegerType(uint64_t BitWidth, uint64_t Align,
+ const IntegerType *getIntegerType(uint64_t BitWidth, Align Align,
bool Signed) {
return new (Allocator.Allocate<IntegerType>())
IntegerType(BitWidth, Align, Signed);
}
- const FloatType *getFloatType(uint64_t BitWidth, uint64_t Align) {
- return new (Allocator.Allocate<FloatType>()) FloatType(BitWidth, Align);
+ const FloatType *getFloatType(const fltSemantics &Semantics, Align Align) {
+ return new (Allocator.Allocate<FloatType>()) FloatType(Semantics, Align);
}
- const PointerType *getPointerType(uint64_t Size, uint64_t Align) {
+ const PointerType *getPointerType(uint64_t Size, Align Align) {
return new (Allocator.Allocate<PointerType>()) PointerType(Size, Align);
}
@@ -249,13 +222,13 @@ class TypeBuilder {
}
const VectorType *getVectorType(const Type *ElementType, uint64_t
NumElements,
- uint64_t Align) {
+ Align Align) {
return new (Allocator.Allocate<VectorType>())
VectorType(ElementType, NumElements, Align);
}
- const StructType *getStructType(ArrayRef<FieldInfo> Fields, uint64_t Size,
- uint64_t Align,
+ const StructType *getStructType(ArrayRef<FieldInfo> Fields, TypeSize Size,
+ Align Align,
StructPacking Pack = StructPacking::Default)
{
FieldInfo *FieldArray = Allocator.Allocate<FieldInfo>(Fields.size());
@@ -267,8 +240,8 @@ class TypeBuilder {
FieldArray, static_cast<uint32_t>(Fields.size()), Size, Align, Pack);
}
- const UnionType *getUnionType(ArrayRef<FieldInfo> Fields, uint64_t Size,
- uint64_t Align,
+ const UnionType *getUnionType(ArrayRef<FieldInfo> Fields, TypeSize Size,
+ Align Align,
StructPacking Pack = StructPacking::Default) {
FieldInfo *FieldArray = Allocator.Allocate<FieldInfo>(Fields.size());
@@ -279,22 +252,6 @@ class TypeBuilder {
return new (Allocator.Allocate<UnionType>()) UnionType(
FieldArray, static_cast<uint32_t>(Fields.size()), Size, Align, Pack);
}
-
- const FunctionType *getFunctionType(const Type *ReturnType,
- ArrayRef<const Type *> ParamTypes,
- bool IsVarArg,
- CallConv CC = CallConv::C) {
- const Type **ParamArray =
- Allocator.Allocate<const Type *>(ParamTypes.size());
-
- for (size_t I = 0; I < ParamTypes.size(); ++I) {
- ParamArray[I] = ParamTypes[I];
- }
-
- return new (Allocator.Allocate<FunctionType>())
- FunctionType(ReturnType, ParamArray,
- static_cast<uint32_t>(ParamTypes.size()), IsVarArg, CC);
- }
};
} // namespace abi
diff --git a/llvm/lib/ABI/CMakeLists.txt b/llvm/lib/ABI/CMakeLists.txt
new file mode 100644
index 0000000000000..d6aa9b542cc05
--- /dev/null
+++ b/llvm/lib/ABI/CMakeLists.txt
@@ -0,0 +1,17 @@
+add_llvm_component_library(LLVMABI
+ QualTypeMapper.cpp
+
+ ADDITIONAL_HEADER_DIRS
+ ${LLVM_MAIN_INCLUDE_DIR}/llvm/ABI
+
+ DEPENDS
+ intrinsics_gen
+
+ LINK_COMPONENTS
+ Core
+ Support
+)
+
+target_include_directories(LLVMABI PRIVATE
+ ${LLVM_MAIN_INCLUDE_DIR}
+)
diff --git a/llvm/lib/ABI/QualTypeMapper.cpp b/llvm/lib/ABI/QualTypeMapper.cpp
new file mode 100644
index 0000000000000..fcf3555aaf369
--- /dev/null
+++ b/llvm/lib/ABI/QualTypeMapper.cpp
@@ -0,0 +1,16 @@
+//===-- llvm/ABI/QualTypeMapper.cpp - QualType to ABI Mapping
-------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This File contains the logic for converting clang::Qualtype to
+// llvm::abi::Type for ABI Lowering
+//
+//===----------------------------------------------------------------------===//
+
+#include <llvm/ABI/QualTypeMapper.h>
+
+// TODO: Implementation of Qualtype -> abi::Type Mapping
diff --git a/llvm/lib/CMakeLists.txt b/llvm/lib/CMakeLists.txt
index f6465612d30c0..b888f6637a925 100644
--- a/llvm/lib/CMakeLists.txt
+++ b/llvm/lib/CMakeLists.txt
@@ -3,6 +3,7 @@ include(LLVM-Build)
# `Demangle', `Support' and `TableGen' libraries are added on the top-level
# CMakeLists.txt
+add_subdirectory(ABI)
add_subdirectory(IR)
add_subdirectory(FuzzMutate)
add_subdirectory(FileCheck)
>From 3a5827125418875f6976b40751b7628d5faf6d4f Mon Sep 17 00:00:00 2001
From: Narayan Sreekumar <nsreekum...@gmail.com>
Date: Fri, 30 May 2025 03:00:01 +0530
Subject: [PATCH 4/5] [LLVMABI] QualType Mapper Implementation
---
clang/include/clang/ABI/QualTypeMapper.h | 78 +++++++++
clang/lib/ABI/CMakeLists.txt | 9 +
clang/lib/ABI/QualTypeMapper.cpp | 209 +++++++++++++++++++++++
clang/lib/CMakeLists.txt | 1 +
llvm/include/llvm/ABI/QualTypeMapper.h | 52 ------
llvm/lib/ABI/CMakeLists.txt | 17 --
llvm/lib/ABI/QualTypeMapper.cpp | 16 --
llvm/lib/CMakeLists.txt | 2 +-
8 files changed, 298 insertions(+), 86 deletions(-)
create mode 100644 clang/include/clang/ABI/QualTypeMapper.h
create mode 100644 clang/lib/ABI/CMakeLists.txt
create mode 100644 clang/lib/ABI/QualTypeMapper.cpp
delete mode 100644 llvm/include/llvm/ABI/QualTypeMapper.h
delete mode 100644 llvm/lib/ABI/CMakeLists.txt
delete mode 100644 llvm/lib/ABI/QualTypeMapper.cpp
diff --git a/clang/include/clang/ABI/QualTypeMapper.h
b/clang/include/clang/ABI/QualTypeMapper.h
new file mode 100644
index 0000000000000..70ae9e0f83130
--- /dev/null
+++ b/clang/include/clang/ABI/QualTypeMapper.h
@@ -0,0 +1,78 @@
+#ifndef LLVM_ABI_QUALTYPE_MAPPER_H
+#define LLVM_ABI_QUALTYPE_MAPPER_H
+
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/Support/Allocator.h"
+#include <clang/AST/ASTContext.h>
+#include <clang/AST/Decl.h>
+#include <clang/AST/Type.h>
+#include <llvm/ABI/Types.h>
+#include <llvm/ADT/DenseMap.h>
+
+// Specialization for QualType
+template <> struct llvm::DenseMapInfo<clang::QualType> {
+ static inline clang::QualType getEmptyKey() {
+ return clang::QualType::getFromOpaquePtr(
+ reinterpret_cast<clang::Type *>(-1));
+ }
+
+ static inline clang::QualType getTombstoneKey() {
+ return clang::QualType::getFromOpaquePtr(
+ reinterpret_cast<clang::Type *>(-2));
+ }
+
+ static unsigned getHashValue(const clang::QualType &Val) {
+ return (unsigned)((uintptr_t)Val.getAsOpaquePtr()) ^
+ ((unsigned)((uintptr_t)Val.getAsOpaquePtr() >> 9));
+ }
+
+ static bool isEqual(const clang::QualType &LHS, const clang::QualType &RHS) {
+ return LHS == RHS;
+ }
+};
+
+namespace clang {
+namespace mapper {
+
+class QualTypeMapper {
+private:
+ clang::ASTContext &ASTCtx;
+ llvm::abi::TypeBuilder Builder;
+
+ llvm::DenseMap<clang::QualType, const llvm::abi::Type *> TypeCache;
+
+ const llvm::abi::Type *convertBuiltinType(const clang::BuiltinType *BT);
+ const llvm::abi::Type *convertPointerType(const clang::PointerType *PT);
+ const llvm::abi::Type *convertArrayType(const clang::ArrayType *AT);
+ const llvm::abi::Type *convertVectorType(const clang::VectorType *VT);
+ const llvm::abi::Type *convertRecordType(const clang::RecordType *RT);
+ const llvm::abi::Type *convertEnumType(const clang::EnumType *ET);
+
+ const llvm::abi::StructType *convertStructType(const clang::RecordDecl *RD);
+ const llvm::abi::UnionType *convertUnionType(const clang::RecordDecl *RD);
+ const llvm::abi::Type *createPointerTypeForPointee(QualType PointeeType);
+
+ void computeFieldInfo(const clang::RecordDecl *RD,
+ SmallVectorImpl<llvm::abi::FieldInfo> &Fields,
+ const clang::ASTRecordLayout &Layout);
+
+ llvm::TypeSize getTypeSize(clang::QualType QT) const;
+ llvm::Align getTypeAlign(clang::QualType QT) const;
+ uint64_t getPointerSize() const;
+ uint64_t getPointerAlign() const;
+
+public:
+ explicit QualTypeMapper(clang::ASTContext &Ctx, llvm::BumpPtrAllocator
&Alloc)
+ : ASTCtx(Ctx), Builder(Alloc) {}
+
+ const llvm::abi::Type *convertType(clang::QualType QT);
+
+ void clearCache() { TypeCache.clear(); }
+
+ llvm::abi::TypeBuilder getTypeBuilder() { return Builder; }
+};
+
+} // namespace mapper
+} // namespace clang
+
+#endif // !LLVM_ABI_QUALTYPE_MAPPER_H
diff --git a/clang/lib/ABI/CMakeLists.txt b/clang/lib/ABI/CMakeLists.txt
new file mode 100644
index 0000000000000..86a8324b5716a
--- /dev/null
+++ b/clang/lib/ABI/CMakeLists.txt
@@ -0,0 +1,9 @@
+add_clang_library(clangABI
+ QualTypeMapper.cpp
+
+ LINK_LIBS
+ clangAST
+ clangBasic
+ LLVMABI
+ LLVMSupport
+)
diff --git a/clang/lib/ABI/QualTypeMapper.cpp b/clang/lib/ABI/QualTypeMapper.cpp
new file mode 100644
index 0000000000000..22070f250026e
--- /dev/null
+++ b/clang/lib/ABI/QualTypeMapper.cpp
@@ -0,0 +1,209 @@
+#include "clang/AST/RecordLayout.h"
+#include "clang/AST/Type.h"
+#include "clang/Analysis/Analyses/ThreadSafetyTIL.h"
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/TargetInfo.h"
+#include "llvm/ABI/Types.h"
+#include "llvm/Support/Alignment.h"
+#include "llvm/Support/Casting.h"
+#include <clang/ABI/QualTypeMapper.h>
+
+namespace clang {
+namespace mapper {
+
+const llvm::abi::Type *QualTypeMapper::convertType(QualType QT) {
+ QT = QT.getCanonicalType().getUnqualifiedType();
+
+ auto It = TypeCache.find(QT);
+ if (It != TypeCache.end())
+ return It->second;
+
+ const llvm::abi::Type *Result = nullptr;
+ if (const auto *BT = dyn_cast<BuiltinType>(QT.getTypePtr())) {
+ Result = convertBuiltinType(BT);
+ } else if (const auto *PT = dyn_cast<PointerType>(QT.getTypePtr())) {
+ Result = convertPointerType(PT);
+ } else if (const auto *AT = dyn_cast<ArrayType>(QT.getTypePtr())) {
+ Result = convertArrayType(AT);
+ } else if (const auto *VT = dyn_cast<VectorType>(QT.getTypePtr())) {
+ Result = convertVectorType(VT);
+ } else if (const auto *RT = dyn_cast<RecordType>(QT.getTypePtr())) {
+ Result = convertRecordType(RT);
+ } else if (const auto *ET = dyn_cast<EnumType>(QT.getTypePtr())) {
+ Result = convertEnumType(ET);
+ } else {
+ // TODO: Write Fallback logic for unsupported types.
+ }
+ TypeCache[QT] = Result;
+ return Result;
+}
+
+const llvm::abi::Type *
+QualTypeMapper::convertBuiltinType(const BuiltinType *BT) {
+ switch (BT->getKind()) {
+ case BuiltinType::Void:
+ return Builder.getVoidType();
+
+ case BuiltinType::Bool:
+ case BuiltinType::UChar:
+ case BuiltinType::Char_U:
+ case BuiltinType::UShort:
+ return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)), false);
+
+ case BuiltinType::Char_S:
+ case BuiltinType::SChar:
+ case BuiltinType::Short:
+ return Builder.getIntegerType(ASTCtx.getCharWidth(),
+ getTypeAlign(QualType(BT, 0)), true);
+
+ case BuiltinType::WChar_U:
+ return Builder.getIntegerType(ASTCtx.getCharWidth(),
+ getTypeAlign(QualType(BT, 0)), false);
+
+ case BuiltinType::WChar_S:
+ return Builder.getIntegerType(ASTCtx.getCharWidth(),
+ getTypeAlign(QualType(BT, 0)), true);
+
+ case BuiltinType::Char8:
+ return Builder.getIntegerType(8, getTypeAlign(QualType(BT, 0)), false);
+
+ case BuiltinType::Char16:
+ return Builder.getIntegerType(16, getTypeAlign(QualType(BT, 0)), false);
+
+ case BuiltinType::Char32:
+ return Builder.getIntegerType(32, getTypeAlign(QualType(BT, 0)), false);
+
+ case BuiltinType::Int:
+ case BuiltinType::UInt:
+ return Builder.getIntegerType(ASTCtx.getIntWidth(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)),
+ BT->getKind() == BuiltinType::Int);
+
+ case BuiltinType::Long:
+ case BuiltinType::ULong:
+ return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)),
+ BT->getKind() == BuiltinType::Long);
+
+ case BuiltinType::LongLong:
+ case BuiltinType::ULongLong:
+ return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)),
+ BT->getKind() == BuiltinType::LongLong);
+
+ case BuiltinType::Int128:
+ case BuiltinType::UInt128:
+ return Builder.getIntegerType(128, getTypeAlign(QualType(BT, 0)),
+ BT->getKind() == BuiltinType::Int128);
+
+ case BuiltinType::Half:
+ case BuiltinType::Float16:
+ return Builder.getFloatType(llvm::APFloat::IEEEhalf(),
+ getTypeAlign(QualType(BT, 0)));
+
+ case BuiltinType::Float:
+ return Builder.getFloatType(llvm::APFloat::IEEEsingle(),
+ getTypeAlign(QualType(BT, 0)));
+
+ case BuiltinType::Double:
+ return Builder.getFloatType(llvm::APFloat::IEEEdouble(),
+ getTypeAlign(QualType(BT, 0)));
+
+ case BuiltinType::LongDouble:
+ return Builder.getFloatType(ASTCtx.getFloatTypeSemantics(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)));
+
+ case BuiltinType::BFloat16:
+ return Builder.getFloatType(llvm::APFloat::BFloat(),
+ getTypeAlign(QualType(BT, 0)));
+
+ case BuiltinType::Float128:
+ return Builder.getFloatType(llvm::APFloat::IEEEquad(),
+ getTypeAlign(QualType(BT, 0)));
+
+ default:
+ return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
+ getTypeAlign(QualType(BT, 0)), false);
+ }
+}
+
+const llvm::abi::Type *
+QualTypeMapper::convertArrayType(const clang::ArrayType *AT) {
+ const llvm::abi::Type *ElementType = convertType(AT->getElementType());
+
+ if (const auto *CAT = dyn_cast<ConstantArrayType>(AT)) {
+ auto NumElements = CAT->getZExtSize();
+ return Builder.getArrayType(ElementType, NumElements);
+ }
+ if (const auto *IAT = dyn_cast<IncompleteArrayType>(AT))
+ return Builder.getArrayType(ElementType, 0);
+ if (const auto *VAT = dyn_cast<VariableArrayType>(AT))
+ return createPointerTypeForPointee(VAT->getPointeeType());
+ // TODO: This of a better fallback.
+ return Builder.getArrayType(ElementType, 1);
+}
+
+const llvm::abi::Type *QualTypeMapper::convertVectorType(const VectorType *VT)
{
+ const llvm::abi::Type *ElementType = convertType(VT->getElementType());
+ uint64_t NumElements = VT->getNumElements();
+
+ llvm::Align VectorAlign = getTypeAlign(QualType(VT, 0));
+
+ return Builder.getVectorType(ElementType, NumElements, VectorAlign);
+}
+
+const llvm::abi::Type *QualTypeMapper::convertRecordType(const RecordType *RT)
{
+ const RecordDecl *RD = RT->getDecl()->getDefinition();
+ if (!RD) {
+ SmallVector<llvm::abi::FieldInfo, 0> Fields;
+ return Builder.getStructType(Fields, llvm::TypeSize::getFixed(0),
+ llvm::Align(1));
+ }
+
+ if (RD->isUnion())
+ return convertUnionType(RD);
+ return convertStructType(RD);
+}
+
+const llvm::abi::Type *
+QualTypeMapper::convertPointerType(const clang::PointerType *PT) {
+ return createPointerTypeForPointee(PT->getPointeeType());
+}
+
+llvm::Align QualTypeMapper::getTypeAlign(QualType QT) const {
+ return llvm::Align(ASTCtx.getTypeAlign(QT));
+}
+
+const llvm::abi::Type *
+QualTypeMapper::createPointerTypeForPointee(QualType PointeeType) {
+ auto AddrSpace = PointeeType.getAddressSpace();
+ auto PointerSize = ASTCtx.getTargetInfo().getPointerWidth(AddrSpace);
+ llvm::Align Alignment =
+ llvm::Align(ASTCtx.getTargetInfo().getPointerAlign(AddrSpace));
+ return Builder.getPointerType(PointerSize, Alignment);
+}
+
+void QualTypeMapper::computeFieldInfo(
+ const RecordDecl *RD, SmallVectorImpl<llvm::abi::FieldInfo> &Fields,
+ const ASTRecordLayout &Layout) {
+ unsigned FieldIndex = 0;
+
+ for (const auto *FD : RD->fields()) {
+ const llvm::abi::Type *FieldType = convertType(FD->getType());
+ uint64_t OffsetInBits = Layout.getFieldOffset(FieldIndex);
+
+ bool IsBitField = FD->isBitField();
+ uint64_t BitFieldWidth = 0;
+
+ if (IsBitField) {
+ BitFieldWidth = FD->getBitWidthValue();
+ }
+
+ Fields.emplace_back(FieldType, OffsetInBits, IsBitField, BitFieldWidth);
+ ++FieldIndex;
+ }
+}
+
+} // namespace mapper
+} // namespace clang
diff --git a/clang/lib/CMakeLists.txt b/clang/lib/CMakeLists.txt
index 4f2218b583e41..f034622c06c2f 100644
--- a/clang/lib/CMakeLists.txt
+++ b/clang/lib/CMakeLists.txt
@@ -1,3 +1,4 @@
+add_subdirectory(ABI)
add_subdirectory(Headers)
add_subdirectory(Basic)
add_subdirectory(APINotes)
diff --git a/llvm/include/llvm/ABI/QualTypeMapper.h
b/llvm/include/llvm/ABI/QualTypeMapper.h
deleted file mode 100644
index f408325dad007..0000000000000
--- a/llvm/include/llvm/ABI/QualTypeMapper.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#ifndef LLVM_ABI_QUALTYPE_MAPPER_H
-#define LLVM_ABI_QUALTYPE_MAPPER_H
-
-#include "llvm/Support/Allocator.h"
-#include <clang/AST/ASTContext.h>
-#include <clang/AST/Type.h>
-#include <llvm/ABI/Types.h>
-#include <llvm/ADT/DenseMap.h>
-
-namespace llvm {
-namespace abi {
-
-class QualTypeMapper {
-private:
- clang::ASTContext &ASTCtx;
- TypeBuilder Builder;
-
- // llvm::DenseMap<clang::QualType , const Type*> TypeCache;
-
- const Type *convertBuiltinType(const clang::BuiltinType *BT);
- const Type *convertPointerType(const clang::PointerType *PT);
- const Type *convertArrayType(const clang::ArrayType *AT);
- const Type *convertVectorType(const clang::VectorType *VT);
- const Type *convertRecordType(const clang::RecordType *RT);
- const Type *convertFunctionType(const clang::FunctionProtoType *FT);
- const Type *convertEnumType(const clang::EnumType *ET);
-
- void computeRecordLayout(const clang::RecordDecl *RD,
- llvm::SmallVectorImpl<FieldInfo> &Fields,
- uint64_t &TotalSize, uint64_t &Alignment,
- StructPacking &Packing);
-
- uint64_t getTypeSize(clang::QualType QT) const;
- uint64_t getTypeAlign(clang::QualType QT) const;
- uint64_t getPointerSize() const;
- uint64_t getPointerAlign() const;
-
-public:
- explicit QualTypeMapper(clang::ASTContext &Ctx, BumpPtrAllocator &Alloc)
- : ASTCtx(Ctx), Builder(Alloc) {}
-
- const Type *convertType(clang::QualType QT);
-
- // void clearCache() {TypeCache.clear();}
-
- TypeBuilder getTypeBuilder() { return Builder; }
-};
-
-} // namespace abi
-} // namespace llvm
-
-#endif // !LLVM_ABI_QUALTYPE_MAPPER_H
diff --git a/llvm/lib/ABI/CMakeLists.txt b/llvm/lib/ABI/CMakeLists.txt
deleted file mode 100644
index d6aa9b542cc05..0000000000000
--- a/llvm/lib/ABI/CMakeLists.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-add_llvm_component_library(LLVMABI
- QualTypeMapper.cpp
-
- ADDITIONAL_HEADER_DIRS
- ${LLVM_MAIN_INCLUDE_DIR}/llvm/ABI
-
- DEPENDS
- intrinsics_gen
-
- LINK_COMPONENTS
- Core
- Support
-)
-
-target_include_directories(LLVMABI PRIVATE
- ${LLVM_MAIN_INCLUDE_DIR}
-)
diff --git a/llvm/lib/ABI/QualTypeMapper.cpp b/llvm/lib/ABI/QualTypeMapper.cpp
deleted file mode 100644
index fcf3555aaf369..0000000000000
--- a/llvm/lib/ABI/QualTypeMapper.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-//===-- llvm/ABI/QualTypeMapper.cpp - QualType to ABI Mapping
-------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This File contains the logic for converting clang::Qualtype to
-// llvm::abi::Type for ABI Lowering
-//
-//===----------------------------------------------------------------------===//
-
-#include <llvm/ABI/QualTypeMapper.h>
-
-// TODO: Implementation of Qualtype -> abi::Type Mapping
diff --git a/llvm/lib/CMakeLists.txt b/llvm/lib/CMakeLists.txt
index b888f6637a925..c84690abda028 100644
--- a/llvm/lib/CMakeLists.txt
+++ b/llvm/lib/CMakeLists.txt
@@ -3,7 +3,7 @@ include(LLVM-Build)
# `Demangle', `Support' and `TableGen' libraries are added on the top-level
# CMakeLists.txt
-add_subdirectory(ABI)
+# add_subdirectory(ABI)
add_subdirectory(IR)
add_subdirectory(FuzzMutate)
add_subdirectory(FileCheck)
>From 283264277936dfc5f8b86cc30af4fa468910c887 Mon Sep 17 00:00:00 2001
From: Narayan Sreekumar <nsreekum...@gmail.com>
Date: Sun, 1 Jun 2025 22:05:23 +0530
Subject: [PATCH 5/5] [LLVMABI] Added mappings for record types
---
.../QualtypeMapper.h} | 58 ++++----
clang/lib/ABI/CMakeLists.txt | 9 --
clang/lib/CMakeLists.txt | 1 -
clang/lib/CodeGen/CMakeLists.txt | 1 +
.../QualtypeMapper.cpp} | 128 ++++++++++--------
llvm/include/llvm/ABI/Types.h | 26 +++-
6 files changed, 117 insertions(+), 106 deletions(-)
rename clang/include/clang/{ABI/QualTypeMapper.h => CodeGen/QualtypeMapper.h}
(59%)
delete mode 100644 clang/lib/ABI/CMakeLists.txt
rename clang/lib/{ABI/QualTypeMapper.cpp => CodeGen/QualtypeMapper.cpp} (67%)
diff --git a/clang/include/clang/ABI/QualTypeMapper.h
b/clang/include/clang/CodeGen/QualtypeMapper.h
similarity index 59%
rename from clang/include/clang/ABI/QualTypeMapper.h
rename to clang/include/clang/CodeGen/QualtypeMapper.h
index 70ae9e0f83130..e99c6847a67b0 100644
--- a/clang/include/clang/ABI/QualTypeMapper.h
+++ b/clang/include/clang/CodeGen/QualtypeMapper.h
@@ -1,35 +1,29 @@
-#ifndef LLVM_ABI_QUALTYPE_MAPPER_H
-#define LLVM_ABI_QUALTYPE_MAPPER_H
-
-#include "llvm/IR/DerivedTypes.h"
+//==---- QualtypeMapper.h - Maps Clang Qualtype to LLVMABI Types
-----------==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Maps Clang QualType instances to corresponding LLVM ABI type
+/// representations. This mapper translates high-level type information from
the
+/// AST into low-level ABI-specific types that encode size, alignment, and
+/// layout details required for code generation and cross-language
+/// interoperability.
+///
+//===----------------------------------------------------------------------===//
+#ifndef CLANG_CODEGEN_QUALTYPE_MAPPER_H
+#define CLANG_CODEGEN_QUALTYPE_MAPPER_H
+
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/Type.h"
+#include "clang/AST/TypeOrdering.h"
+#include "llvm/ABI/Types.h"
+#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Allocator.h"
-#include <clang/AST/ASTContext.h>
-#include <clang/AST/Decl.h>
-#include <clang/AST/Type.h>
-#include <llvm/ABI/Types.h>
-#include <llvm/ADT/DenseMap.h>
-
-// Specialization for QualType
-template <> struct llvm::DenseMapInfo<clang::QualType> {
- static inline clang::QualType getEmptyKey() {
- return clang::QualType::getFromOpaquePtr(
- reinterpret_cast<clang::Type *>(-1));
- }
-
- static inline clang::QualType getTombstoneKey() {
- return clang::QualType::getFromOpaquePtr(
- reinterpret_cast<clang::Type *>(-2));
- }
-
- static unsigned getHashValue(const clang::QualType &Val) {
- return (unsigned)((uintptr_t)Val.getAsOpaquePtr()) ^
- ((unsigned)((uintptr_t)Val.getAsOpaquePtr() >> 9));
- }
-
- static bool isEqual(const clang::QualType &LHS, const clang::QualType &RHS) {
- return LHS == RHS;
- }
-};
namespace clang {
namespace mapper {
@@ -75,4 +69,4 @@ class QualTypeMapper {
} // namespace mapper
} // namespace clang
-#endif // !LLVM_ABI_QUALTYPE_MAPPER_H
+#endif // !CLANG_CODEGEN_QUALTYPE_MAPPER_H
diff --git a/clang/lib/ABI/CMakeLists.txt b/clang/lib/ABI/CMakeLists.txt
deleted file mode 100644
index 86a8324b5716a..0000000000000
--- a/clang/lib/ABI/CMakeLists.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-add_clang_library(clangABI
- QualTypeMapper.cpp
-
- LINK_LIBS
- clangAST
- clangBasic
- LLVMABI
- LLVMSupport
-)
diff --git a/clang/lib/CMakeLists.txt b/clang/lib/CMakeLists.txt
index f034622c06c2f..4f2218b583e41 100644
--- a/clang/lib/CMakeLists.txt
+++ b/clang/lib/CMakeLists.txt
@@ -1,4 +1,3 @@
-add_subdirectory(ABI)
add_subdirectory(Headers)
add_subdirectory(Basic)
add_subdirectory(APINotes)
diff --git a/clang/lib/CodeGen/CMakeLists.txt b/clang/lib/CodeGen/CMakeLists.txt
index a05b31f971e18..c70862a05d35d 100644
--- a/clang/lib/CodeGen/CMakeLists.txt
+++ b/clang/lib/CodeGen/CMakeLists.txt
@@ -115,6 +115,7 @@ add_clang_library(clangCodeGen
ModuleBuilder.cpp
ObjectFilePCHContainerWriter.cpp
PatternInit.cpp
+ QualtypeMapper.cpp
SanitizerMetadata.cpp
SwiftCallingConv.cpp
TargetBuiltins/ARM.cpp
diff --git a/clang/lib/ABI/QualTypeMapper.cpp
b/clang/lib/CodeGen/QualtypeMapper.cpp
similarity index 67%
rename from clang/lib/ABI/QualTypeMapper.cpp
rename to clang/lib/CodeGen/QualtypeMapper.cpp
index 22070f250026e..f1577383af4dc 100644
--- a/clang/lib/ABI/QualTypeMapper.cpp
+++ b/clang/lib/CodeGen/QualtypeMapper.cpp
@@ -1,12 +1,28 @@
+//==---- QualtypeMapper.cpp - Maps Clang Qualtype to LLVMABI Types
---------==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Maps Clang QualType instances to corresponding LLVM ABI type
+/// representations. This mapper translates high-level type information from
the
+/// AST into low-level ABI-specific types that encode size, alignment, and
+/// layout details required for code generation and cross-language
+/// interoperability.
+///
+//===----------------------------------------------------------------------===//
+#include "clang/CodeGen/QualtypeMapper.h"
+#include "clang/AST/Decl.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/Type.h"
-#include "clang/Analysis/Analyses/ThreadSafetyTIL.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ABI/Types.h"
#include "llvm/Support/Alignment.h"
-#include "llvm/Support/Casting.h"
-#include <clang/ABI/QualTypeMapper.h>
+#include "llvm/Support/TypeSize.h"
namespace clang {
namespace mapper {
@@ -40,87 +56,44 @@ const llvm::abi::Type *QualTypeMapper::convertType(QualType
QT) {
const llvm::abi::Type *
QualTypeMapper::convertBuiltinType(const BuiltinType *BT) {
+ QualType QT(BT, 0);
+
switch (BT->getKind()) {
case BuiltinType::Void:
return Builder.getVoidType();
case BuiltinType::Bool:
- case BuiltinType::UChar:
- case BuiltinType::Char_U:
- case BuiltinType::UShort:
- return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
- getTypeAlign(QualType(BT, 0)), false);
-
case BuiltinType::Char_S:
+ case BuiltinType::Char_U:
case BuiltinType::SChar:
- case BuiltinType::Short:
- return Builder.getIntegerType(ASTCtx.getCharWidth(),
- getTypeAlign(QualType(BT, 0)), true);
-
- case BuiltinType::WChar_U:
- return Builder.getIntegerType(ASTCtx.getCharWidth(),
- getTypeAlign(QualType(BT, 0)), false);
-
+ case BuiltinType::UChar:
case BuiltinType::WChar_S:
- return Builder.getIntegerType(ASTCtx.getCharWidth(),
- getTypeAlign(QualType(BT, 0)), true);
-
+ case BuiltinType::WChar_U:
case BuiltinType::Char8:
- return Builder.getIntegerType(8, getTypeAlign(QualType(BT, 0)), false);
-
case BuiltinType::Char16:
- return Builder.getIntegerType(16, getTypeAlign(QualType(BT, 0)), false);
-
case BuiltinType::Char32:
- return Builder.getIntegerType(32, getTypeAlign(QualType(BT, 0)), false);
-
+ case BuiltinType::Short:
+ case BuiltinType::UShort:
case BuiltinType::Int:
case BuiltinType::UInt:
- return Builder.getIntegerType(ASTCtx.getIntWidth(QualType(BT, 0)),
- getTypeAlign(QualType(BT, 0)),
- BT->getKind() == BuiltinType::Int);
-
case BuiltinType::Long:
case BuiltinType::ULong:
- return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
- getTypeAlign(QualType(BT, 0)),
- BT->getKind() == BuiltinType::Long);
-
case BuiltinType::LongLong:
case BuiltinType::ULongLong:
- return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
- getTypeAlign(QualType(BT, 0)),
- BT->getKind() == BuiltinType::LongLong);
-
case BuiltinType::Int128:
case BuiltinType::UInt128:
- return Builder.getIntegerType(128, getTypeAlign(QualType(BT, 0)),
- BT->getKind() == BuiltinType::Int128);
+ return Builder.getIntegerType(ASTCtx.getTypeSize(QT), getTypeAlign(QT),
+ BT->isSignedInteger());
case BuiltinType::Half:
case BuiltinType::Float16:
- return Builder.getFloatType(llvm::APFloat::IEEEhalf(),
- getTypeAlign(QualType(BT, 0)));
-
+ case BuiltinType::BFloat16:
case BuiltinType::Float:
- return Builder.getFloatType(llvm::APFloat::IEEEsingle(),
- getTypeAlign(QualType(BT, 0)));
-
case BuiltinType::Double:
- return Builder.getFloatType(llvm::APFloat::IEEEdouble(),
- getTypeAlign(QualType(BT, 0)));
-
case BuiltinType::LongDouble:
- return Builder.getFloatType(ASTCtx.getFloatTypeSemantics(QualType(BT, 0)),
- getTypeAlign(QualType(BT, 0)));
-
- case BuiltinType::BFloat16:
- return Builder.getFloatType(llvm::APFloat::BFloat(),
- getTypeAlign(QualType(BT, 0)));
-
case BuiltinType::Float128:
- return Builder.getFloatType(llvm::APFloat::IEEEquad(),
- getTypeAlign(QualType(BT, 0)));
+ return Builder.getFloatType(ASTCtx.getFloatTypeSemantics(QT),
+ getTypeAlign(QT));
default:
return Builder.getIntegerType(ASTCtx.getTypeSize(QualType(BT, 0)),
@@ -171,6 +144,45 @@ QualTypeMapper::convertPointerType(const
clang::PointerType *PT) {
return createPointerTypeForPointee(PT->getPointeeType());
}
+const llvm::abi::Type *
+QualTypeMapper::convertEnumType(const clang::EnumType *ET) {
+ const EnumDecl *ED = ET->getDecl();
+ QualType UnderlyingType = ED->getIntegerType();
+
+ if (UnderlyingType.isNull())
+ UnderlyingType = ASTCtx.IntTy;
+
+ return convertType(UnderlyingType);
+}
+
+const llvm::abi::StructType *
+QualTypeMapper::convertStructType(const clang::RecordDecl *RD) {
+ const ASTRecordLayout &Layout = ASTCtx.getASTRecordLayout(RD);
+
+ SmallVector<llvm::abi::FieldInfo, 16> Fields;
+ computeFieldInfo(RD, Fields, Layout);
+
+ llvm::TypeSize Size =
+ llvm::TypeSize::getFixed(Layout.getSize().getQuantity() * 8);
+ llvm::Align Alignment = llvm::Align(Layout.getAlignment().getQuantity());
+
+ return Builder.getStructType(Fields, Size, Alignment);
+}
+
+const llvm::abi::UnionType *
+QualTypeMapper::convertUnionType(const clang::RecordDecl *RD) {
+ const ASTRecordLayout &Layout = ASTCtx.getASTRecordLayout(RD);
+
+ SmallVector<llvm::abi::FieldInfo, 16> Fields;
+ computeFieldInfo(RD, Fields, Layout);
+
+ llvm::TypeSize Size =
+ llvm::TypeSize::getFixed(Layout.getSize().getQuantity() * 8);
+ llvm::Align Alignment = llvm::Align(Layout.getAlignment().getQuantity());
+
+ return Builder.getUnionType(Fields, Size, Alignment);
+}
+
llvm::Align QualTypeMapper::getTypeAlign(QualType QT) const {
return llvm::Align(ASTCtx.getTypeAlign(QT));
}
diff --git a/llvm/include/llvm/ABI/Types.h b/llvm/include/llvm/ABI/Types.h
index e99bee35acf77..2b91b72e9daf1 100644
--- a/llvm/include/llvm/ABI/Types.h
+++ b/llvm/include/llvm/ABI/Types.h
@@ -1,13 +1,27 @@
+//===- ABI/Types.h ----------------------------------------------*- C++
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file defines the Types and related helper methods concerned to the
+/// LLVMABI library which mirrors ABI related type information from
+/// the LLVM frontend.
+///
+//===----------------------------------------------------------------------===//
#ifndef LLVM_ABI_TYPES_H
#define LLVM_ABI_TYPES_H
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/ArrayRef.h"
+#include "llvm/IR/CallingConv.h"
#include "llvm/Support/Alignment.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/TypeSize.h"
#include <cstdint>
-#include <llvm/IR/CallingConv.h>
namespace llvm {
namespace abi {
@@ -27,21 +41,21 @@ class Type {
protected:
TypeKind Kind;
TypeSize SizeInBits;
- Align AlignInBits;
+ Align Alignment;
bool IsExplicitlyAligned;
Type(TypeKind K, TypeSize Size, Align Align, bool ExplicitAlign = false)
- : Kind(K), SizeInBits(Size), AlignInBits(Align),
+ : Kind(K), SizeInBits(Size), Alignment(Align),
IsExplicitlyAligned(ExplicitAlign) {}
public:
TypeKind getKind() const { return Kind; }
TypeSize getSizeInBits() const { return SizeInBits; }
- Align getAlignInBits() const { return AlignInBits; }
+ Align getAlignment() const { return Alignment; }
bool hasExplicitAlignment() const { return IsExplicitlyAligned; }
void setExplicitAlignment(Align Align) {
- AlignInBits = Align;
+ Alignment = Align;
IsExplicitlyAligned = true;
}
@@ -109,7 +123,7 @@ class ArrayType : public Type {
public:
ArrayType(const Type *ElemType, uint64_t NumElems)
: Type(TypeKind::Array, ElemType->getSizeInBits() * NumElems,
- ElemType->getAlignInBits()),
+ ElemType->getAlignment()),
ElementType(ElemType), NumElements(NumElems) {}
const Type *getElementType() const { return ElementType; }
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
