#include "/work/as-worker-4/publish-doxygen-docs/llvm-project/clang/lib/CodeGen/HLSLBufferLayoutBuilder.h"

Public Member Functions
	HLSLBufferLayoutBuilder (CodeGenModule &CGM)
llvm::StructType *	layOutStruct (const RecordType *StructType, const CGHLSLOffsetInfo &OffsetInfo)
	Lays out a struct type following HLSL buffer rules and considering any explicit offset information.
llvm::Type *	layOutArray (const ConstantArrayType *AT)
	Lays out an array type following HLSL buffer rules.
llvm::Type *	layOutType (QualType Type)
	Lays out a type following HLSL buffer rules.

Detailed Description

Definition at line 24 of file HLSLBufferLayoutBuilder.h.

Constructor & Destructor Documentation

◆ HLSLBufferLayoutBuilder()

clang::CodeGen::HLSLBufferLayoutBuilder::HLSLBufferLayoutBuilder ( CodeGenModule & CGM )

inline

Definition at line 29 of file HLSLBufferLayoutBuilder.h.

Member Function Documentation

◆ layOutArray()

llvm::Type * clang::CodeGen::HLSLBufferLayoutBuilder::layOutArray ( const ConstantArrayType * AT )

Lays out an array type following HLSL buffer rules.

Definition at line 106 of file HLSLBufferLayoutBuilder.cpp.

References clang::CharUnits::alignTo(), CBufferRowSize, clang::CharUnits::fromQuantity(), clang::ArrayType::getElementType(), clang::ConstantArrayType::getZExtSize(), clang::CharUnits::isZero(), and layOutType().

Referenced by layOutType().

◆ layOutStruct()

llvm::StructType * clang::CodeGen::HLSLBufferLayoutBuilder::layOutStruct	(	const RecordType *	StructType,
		const CGHLSLOffsetInfo &	OffsetInfo )

Lays out a struct type following HLSL buffer rules and considering any explicit offset information.

Previously created layout structs are cached by CGHLSLRuntime.

The function iterates over all fields of the record type (including base classes) and works out a padded llvm type to represent the buffer layout.

If a non-empty OffsetInfo is provided (ie, from packoffset annotations in the source), any provided offsets offsets will be respected. If the OffsetInfo is available but has empty entries, those will be layed out at the end of the structure.

Definition at line 31 of file HLSLBufferLayoutBuilder.cpp.

References clang::CharUnits::alignTo(), clang::CXXRecordDecl::bases_begin(), clang::Type::castAsCXXRecordDecl(), CBufferRowSize, clang::CodeGen::CGHLSLOffsetInfo::compareOffsets(), clang::CodeGen::Decl, clang::CodeGen::CGHLSLOffsetInfo::empty(), clang::CharUnits::fromQuantity(), clang::CXXRecordDecl::getNumBases(), clang::CXXBaseSpecifier::getType(), layOutType(), clang::CodeGen::CGHLSLOffsetInfo::Unspecified, and clang::CharUnits::Zero().