ProfDataUtils.cpp File Reference

#include "llvm/IR/ProfDataUtils.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/Support/CommandLine.h"

Go to the source code of this file.

Functions
static bool	isTargetMD (const MDNode *ProfData, const char *Name, unsigned MinOps)
template<typename T, typename = typename std::enable_if<std::is_arithmetic_v<T>>>
static void	extractFromBranchWeightMD (const MDNode *ProfileData, SmallVectorImpl< T > &Weights)
static SmallVector< uint32_t >	fitWeights (ArrayRef< uint64_t > Weights)
	Push the weights right to fit in uint32_t.
static bool	hasCountTypeMD (const Instruction &I)

Variables
static constexpr unsigned	MinBWOps = 3
static constexpr unsigned	MinVPOps = 5
static cl::opt< bool >	ElideAllZeroBranchWeights ("elide-all-zero-branch-weights", cl::init(true))

Function Documentation

extractFromBranchWeightMD()

template<typename T, typename = typename std::enable_if<std::is_arithmetic_v<T>>>

void extractFromBranchWeightMD ( const MDNode * ProfileData, SmallVectorImpl< T > & Weights )

static

Definition at line 69 of file ProfDataUtils.cpp.

References assert(), llvm::mdconst::dyn_extract(), E(), llvm::APInt::getActiveBits(), llvm::getBranchWeightOffset(), llvm::MDNode::getNumOperands(), llvm::MDNode::getOperand(), llvm::ConstantInt::getValue(), llvm::ConstantInt::getZExtValue(), llvm::isBranchWeightMD(), llvm::SmallVectorImpl< T >::resize(), and T.

Referenced by llvm::extractBranchWeights(), llvm::extractFromBranchWeightMD32(), and llvm::extractFromBranchWeightMD64().

fitWeights()

SmallVector< uint32_t > fitWeights ( ArrayRef< uint64_t > Weights )

static

Push the weights right to fit in uint32_t.

Definition at line 89 of file ProfDataUtils.cpp.

References llvm::append_range(), llvm::countl_zero(), llvm::max_element(), llvm::Offset, and llvm::ArrayRef< T >::size().

Referenced by llvm::setFittedBranchWeights().

hasCountTypeMD()

bool hasCountTypeMD ( const Instruction & I )

static

Definition at line 136 of file ProfDataUtils.cpp.

References I, llvm::isa(), llvm::isBranchWeightMD(), and llvm::isValueProfileMD().

Referenced by llvm::scaleProfData().

isTargetMD()

bool isTargetMD ( const MDNode * ProfData, const char * Name, unsigned MinOps )

static

Definition at line 49 of file ProfDataUtils.cpp.

References llvm::dyn_cast(), llvm::MDNode::getNumOperands(), and llvm::MDNode::getOperand().

Referenced by llvm::isBranchWeightMD(), and llvm::isValueProfileMD().

Variable Documentation

ElideAllZeroBranchWeights

cl::opt< bool > ElideAllZeroBranchWeights("elide-all-zero-branch-weights", cl::init(true)) ( "elide-all-zero-branch-weights" , cl::init(true)  )

static

Referenced by llvm::setBranchWeights().

MinBWOps

unsigned MinBWOps = 3

staticconstexpr

Definition at line 42 of file ProfDataUtils.cpp.

Referenced by llvm::isBranchWeightMD().

MinVPOps

unsigned MinVPOps = 5

staticconstexpr

Definition at line 45 of file ProfDataUtils.cpp.

Referenced by llvm::isValueProfileMD().