BPFAbstractMemberAccess.cpp File Reference

#include "BPF.h"
#include "BPFCORE.h"
#include "BPFTargetMachine.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Twine.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/DebugInfo/BTF/BTF.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicsBPF.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include <optional>

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE   "bpf-abstract-member-access"

Functions
static bool	SkipDIDerivedTag (unsigned Tag, bool skipTypedef)
static DIType *	stripQualifiers (DIType *Ty, bool skipTypedef=true)
static const DIType *	stripQualifiers (const DIType *Ty)
static uint32_t	calcArraySize (const DICompositeType *CTy, uint32_t StartDim)
static uint32_t	calcElementCount (DIType *&Ty)
	Return the number of innermost elements in Ty, looking through array element types such as Row in typedef struct S Row[3].
static Type *	getBaseElementType (const CallInst *Call)
static uint64_t	getConstant (const Value *IndexValue)
static void	replaceWithGEP (CallInst *Call, uint32_t DimensionIndex, uint32_t GEPIndex)
static std::string	formatAmaSuffix (uint32_t Kind, int64_t PatchImm, const Twine &AccessString)
static GlobalVariable *	getOrCreateAmaGlobal (Module &M, DIType *Root, IntegerType *ValueType, StringRef RelocSuffix)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "bpf-abstract-member-access"

Definition at line 102 of file BPFAbstractMemberAccess.cpp.

Function Documentation

calcArraySize()

uint32_t calcArraySize ( const DICompositeType * CTy, uint32_t StartDim )

static

Definition at line 326 of file BPFAbstractMemberAccess.cpp.

References llvm::cast(), llvm::dyn_cast(), llvm::dyn_cast_or_null(), llvm::DISubrange::getCount(), llvm::DICompositeType::getElements(), and I.

Referenced by calcElementCount().

calcElementCount()

uint32_t calcElementCount ( DIType *& Ty )

static

Return the number of innermost elements in Ty, looking through array element types such as Row in typedef struct S Row[3].

Ty is updated to the innermost element type.

Definition at line 344 of file BPFAbstractMemberAccess.cpp.

References calcArraySize(), llvm::Count, llvm::dyn_cast(), and stripQualifiers().

formatAmaSuffix()

std::string formatAmaSuffix ( uint32_t Kind, int64_t PatchImm, const Twine & AccessString )

static

Definition at line 923 of file BPFAbstractMemberAccess.cpp.

getBaseElementType()

Type * getBaseElementType ( const CallInst * Call )

static

Definition at line 355 of file BPFAbstractMemberAccess.cpp.

References Call.

Referenced by replaceWithGEP().

getConstant()

uint64_t getConstant ( const Value * IndexValue )

static

Definition at line 360 of file BPFAbstractMemberAccess.cpp.

References assert(), llvm::dyn_cast(), llvm::ConstantInt::getValue(), llvm::APInt::getZExtValue(), and uint64_t.

Referenced by replaceWithGEP().

getOrCreateAmaGlobal()

GlobalVariable * getOrCreateAmaGlobal ( Module & M, DIType * Root, IntegerType * ValueType, StringRef RelocSuffix )

static

Definition at line 1063 of file BPFAbstractMemberAccess.cpp.

References llvm::BPFCoreSharedInfo::AmaAttr, llvm::dyn_cast(), llvm::GlobalValue::ExternalLinkage, llvm::DIType::getName(), and N.

replaceWithGEP()

void replaceWithGEP ( CallInst * Call, uint32_t DimensionIndex, uint32_t GEPIndex )

static

Definition at line 450 of file BPFAbstractMemberAccess.cpp.

References Call, llvm::GetElementPtrInst::CreateInBounds(), GEP, getBaseElementType(), getConstant(), llvm::Type::getInt32Ty(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::BPFCoreSharedInfo::removeArrayAccessCall(), and llvm::BPFCoreSharedInfo::removeStructAccessCall().

SkipDIDerivedTag()

bool SkipDIDerivedTag ( unsigned Tag, bool skipTypedef )

static

Definition at line 297 of file BPFAbstractMemberAccess.cpp.

Referenced by stripQualifiers(), and stripQualifiers().

stripQualifiers() [1/2]

const DIType * stripQualifiers ( const DIType * Ty )

static

Definition at line 317 of file BPFAbstractMemberAccess.cpp.

References llvm::dyn_cast(), llvm::DINode::getTag(), and SkipDIDerivedTag().

stripQualifiers() [2/2]

DIType * stripQualifiers ( DIType * Ty, bool skipTypedef = true )

static

Definition at line 308 of file BPFAbstractMemberAccess.cpp.

References llvm::dyn_cast(), llvm::DINode::getTag(), and SkipDIDerivedTag().

Referenced by calcElementCount().