LLVM: llvm::StructLayout Class Reference (original) (raw)

Used to lazily calculate structure layout information for a target machine, based on the DataLayout structure. More...

#include "[llvm/IR/DataLayout.h](DataLayout%5F8h%5Fsource.html)"

Public Member Functions
TypeSize getSizeInBytes () const
TypeSize getSizeInBits () const
Align getAlignment () const
bool hasPadding () const
Returns whether the struct has padding or not between its fields.
LLVM_ABI unsigned getElementContainingOffset (uint64_t FixedOffset) const
Given a valid byte offset into the structure, returns the structure index that contains it.
MutableArrayRef< TypeSize > getMemberOffsets ()
ArrayRef< TypeSize > getMemberOffsets () const
TypeSize getElementOffset (unsigned Idx) const
TypeSize getElementOffsetInBits (unsigned Idx) const

Used to lazily calculate structure layout information for a target machine, based on the DataLayout structure.

Definition at line 712 of file DataLayout.h.

◆ getAlignment()

Align llvm::StructLayout::getAlignment ( ) const inline

◆ getElementContainingOffset()

Given a valid byte offset into the structure, returns the structure index that contains it.

getElementContainingOffset - Given a valid offset into the structure, return the structure index that contains it.

Definition at line 92 of file DataLayout.cpp.

References assert(), llvm::ArrayRef< T >::begin(), llvm::ArrayRef< T >::end(), llvm::TypeSize::getFixed(), getMemberOffsets(), llvm::details::FixedOrScalableQuantity< TypeSize, uint64_t >::isKnownGT(), llvm::details::FixedOrScalableQuantity< TypeSize, uint64_t >::isKnownLE(), llvm::details::FixedOrScalableQuantity< TypeSize, uint64_t >::isKnownLT(), llvm::Offset, and llvm::upper_bound().

Referenced by findFuncPointers(), llvm::DataLayout::getGEPIndexForOffset(), llvm::getPointerAtOffset(), getTypePartition(), replaceCBufferAccesses(), splitGlobal(), and stripAggregateTypeWrapping().

◆ getElementOffset()

Definition at line 743 of file DataLayout.h.

References assert(), and getMemberOffsets().

Referenced by llvm::GEPOperator::accumulateConstantOffset(), llvm::GEPOperator::collectOffset(), computeKnownBitsFromOperator(), llvm::computeValueLLTs(), llvm::ComputeValueTypes(), llvm::decomposeLinearExpression(), emitGlobalConstantImpl(), emitGlobalConstantStruct(), findFuncPointers(), getElementOffsetInBits(), llvm::DataLayout::getGEPIndexForOffset(), llvm::DataLayout::getIndexedOffsetInType(), llvm::GEPOperator::getMaxPreservedAlignment(), getMemberOffsets(), llvm::ScalarEvolution::getOffsetOfExpr(), llvm::getPointerAtOffset(), getTypePartition(), llvm::ExecutionEngine::InitializeMemory(), isGEPKnownNonNull(), and splitGlobal().

◆ getElementOffsetInBits()

TypeSize llvm::StructLayout::getElementOffsetInBits ( unsigned Idx) const inline

◆ getMemberOffsets() [1/2]

◆ getMemberOffsets() [2/2]

◆ getSizeInBits()

TypeSize llvm::StructLayout::getSizeInBits ( ) const inline

◆ getSizeInBytes()

TypeSize llvm::StructLayout::getSizeInBytes ( ) const inline

◆ hasPadding()

bool llvm::StructLayout::hasPadding ( ) const inline

Returns whether the struct has padding or not between its fields.

NB: Padding in nested element is not taken into account.

Definition at line 729 of file DataLayout.h.

◆ DataLayout

The documentation for this class was generated from the following files: