#include "llvm/Analysis/DemandedBits.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstdint>

Include dependency graph for DemandedBits.cpp:

Macros
#define	DEBUG_TYPE "demanded-bits"

Functions
	INITIALIZE_PASS_BEGIN (DemandedBitsWrapperPass, "demanded-bits", "Demanded bits analysis", false, false) INITIALIZE_PASS_END(DemandedBitsWrapperPass

static bool	isAlwaysLive (Instruction *I)

static APInt	determineLiveOperandBitsAddCarry (unsigned OperandNo, const APInt &AOut, const KnownBits &LHS, const KnownBits &RHS, bool CarryZero, bool CarryOne)

Variables
demanded	bits

demanded Demanded bits	analysis

demanded Demanded bits	false

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "demanded-bits"

Definition at line 55 of file DemandedBits.cpp.

Function Documentation

◆ determineLiveOperandBitsAddCarry()

static APInt determineLiveOperandBitsAddCarry	(	unsigned	OperandNo,
		const APInt &	AOut,
		const KnownBits &	LHS,
		const KnownBits &	RHS,
		bool	CarryZero,
		bool	CarryOne
	)

static

Definition at line 535 of file DemandedBits.cpp.

References assert(), llvm::KnownBits::One, llvm::APInt::reverseBits(), and llvm::KnownBits::Zero.

Referenced by llvm::DemandedBits::determineLiveOperandBitsAdd(), and llvm::DemandedBits::determineLiveOperandBitsSub().

◆ INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	DemandedBitsWrapperPass	,
		"demanded-bits"	,
		"Demanded bits analysis"	,
		false	,
		false
	)

◆ isAlwaysLive()

static bool isAlwaysLive ( Instruction * I )

static

Definition at line 81 of file DemandedBits.cpp.

References I.

Referenced by llvm::DemandedBits::isInstructionDead(), and llvm::DemandedBits::isUseDead().

Variable Documentation

◆ analysis

demanded Demanded bits analysis

Definition at line 64 of file DemandedBits.cpp.

◆ bits

demanded bits

Definition at line 63 of file DemandedBits.cpp.

Referenced by llvm::detail::IEEEFloat::convertToInteger(), llvm::HexagonInstrInfo::getMaxValue(), llvm::HexagonInstrInfo::getMinValue(), llvm::lostFractionThroughTruncation(), lowBitMask(), llvm::partCountForBits(), llvm::shiftRight(), llvm::detail::tcSetLeastSignificantBits(), llvm::APInt::trunc(), and llvm::ulpsFromBoundary().

◆ false

demanded Demanded bits false