DataLayout.cpp File Reference

#include "llvm/IR/DataLayout.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/GetElementPtrTypeIterator.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemAlloc.h"
#include "llvm/Support/TypeSize.h"
#include "llvm/TargetParser/Triple.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstdlib>
#include <new>
#include <utility>

Go to the source code of this file.

Functions
static Error	createSpecFormatError (Twine Format)
static Error	parseAddrSpace (StringRef Str, unsigned &AddrSpace)
	Attempts to parse an address space component of a specification.
static Error	parseSize (StringRef Str, unsigned &BitWidth, StringRef Name="size")
	Attempts to parse a size component of a specification.
static Error	parseAlignment (StringRef Str, Align &Alignment, StringRef Name, bool AllowZero=false)
	Attempts to parse an alignment component of a specification.
static APInt	getElementIndex (TypeSize ElemSize, APInt &Offset)

Variables
constexpr DataLayout::PrimitiveSpec	DefaultIntSpecs []
constexpr DataLayout::PrimitiveSpec	DefaultFloatSpecs []
constexpr DataLayout::PrimitiveSpec	DefaultVectorSpecs []
constexpr DataLayout::PointerSpec	DefaultPointerSpecs []

Function Documentation

createSpecFormatError()

static Error createSpecFormatError ( Twine  Format )

static

Definition at line 271 of file DataLayout.cpp.

References llvm::createStringError(), and llvm::Format.

getElementIndex()

static APInt getElementIndex ( TypeSize  ElemSize, APInt &  Offset  )

static

Definition at line 920 of file DataLayout.cpp.

References assert(), llvm::BitWidth, llvm::APInt::getZero(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isScalable(), llvm::isUIntN(), and llvm::Offset.

Referenced by areTwoInsertFromSameBuildVector(), findBuildAggregate_rec(), llvm::DataLayout::getGEPIndexForOffset(), llvm::DataLayout::getGEPIndicesForOffset(), llvm::slpvectorizer::BoUpSLP::getReorderingData(), llvm::slpvectorizer::BoUpSLP::getTreeCost(), isFirstInsertElement(), and llvm::slpvectorizer::BoUpSLP::vectorizeTree().

parseAddrSpace()

static Error parseAddrSpace ( StringRef  Str, unsigned &  AddrSpace  )

static

Attempts to parse an address space component of a specification.

Definition at line 277 of file DataLayout.cpp.

References llvm::createStringError(), and llvm::Error::success().

parseAlignment()

static Error parseAlignment ( StringRef  Str, Align &  Alignment, StringRef  Name, bool  AllowZero = false  )

static

Attempts to parse an alignment component of a specification.

On success, returns the value converted to byte amount in Alignment. If the value is zero and AllowZero is true, Alignment is set to one.

Return an error in a number of cases:

• Str is empty or contains characters other than decimal digits;
• the value is zero and AllowZero is false;
• the value is too large;
• the value is not a multiple of the byte width;
• the value converted to byte amount is not not a power of two.

Definition at line 310 of file DataLayout.cpp.

References llvm::createStringError(), llvm::isPowerOf2_32(), Name, and llvm::Error::success().

parseSize()

static Error parseSize ( StringRef  Str, unsigned &  BitWidth, StringRef  Name = "size"  )

static

Attempts to parse a size component of a specification.

Definition at line 288 of file DataLayout.cpp.

References llvm::BitWidth, llvm::createStringError(), Name, and llvm::Error::success().

Variable Documentation

DefaultFloatSpecs

constexpr DataLayout::PrimitiveSpec DefaultFloatSpecs[]

constexpr

Initial value:

= {
    {16, Align::Constant<2>(), Align::Constant<2>()},    
    {32, Align::Constant<4>(), Align::Constant<4>()},    
    {64, Align::Constant<8>(), Align::Constant<8>()},    
    {128, Align::Constant<16>(), Align::Constant<16>()}, 
}

Definition at line 197 of file DataLayout.cpp.

DefaultIntSpecs

constexpr DataLayout::PrimitiveSpec DefaultIntSpecs[]

constexpr

Initial value:

= {
    {1, Align::Constant<1>(), Align::Constant<1>()},  
    {8, Align::Constant<1>(), Align::Constant<1>()},  
    {16, Align::Constant<2>(), Align::Constant<2>()}, 
    {32, Align::Constant<4>(), Align::Constant<4>()}, 
    {64, Align::Constant<4>(), Align::Constant<8>()}, 
}

Definition at line 190 of file DataLayout.cpp.

DefaultPointerSpecs

constexpr DataLayout::PointerSpec DefaultPointerSpecs[]

constexpr

Initial value:

= {
    
    {0, 64, Align::Constant<8>(), Align::Constant<8>(), 64, false},
}

Definition at line 209 of file DataLayout.cpp.

DefaultVectorSpecs

constexpr DataLayout::PrimitiveSpec DefaultVectorSpecs[]

constexpr

Initial value:

= {
    {64, Align::Constant<8>(), Align::Constant<8>()},    
    {128, Align::Constant<16>(), Align::Constant<16>()}, 
}

Definition at line 203 of file DataLayout.cpp.