#include "AArch64InstrInfo.h"
#include "AArch64Subtarget.h"
#include "MCTargetDesc/AArch64AddressingModes.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <cstdint>
#include <iterator>
#include <limits>

Include dependency graph for AArch64LoadStoreOptimizer.cpp:

Macros
#define	DEBUG_TYPE "aarch64-ldst-opt"

#define	AARCH64_LOAD_STORE_OPT_NAME "AArch64 load / store optimization pass"

Functions
	STATISTIC (NumPairCreated, "Number of load/store pair instructions generated")

	STATISTIC (NumPostFolded, "Number of post-index updates folded")

	STATISTIC (NumPreFolded, "Number of pre-index updates folded")

	STATISTIC (NumUnscaledPairCreated, "Number of load/store from unscaled generated")

	STATISTIC (NumZeroStoresPromoted, "Number of narrow zero stores promoted")

	STATISTIC (NumLoadsFromStoresPromoted, "Number of loads from stores promoted")

	INITIALIZE_PASS (AArch64LoadStoreOpt, "aarch64-ldst-opt", AARCH64_LOAD_STORE_OPT_NAME, false, false) static bool isNarrowStore(unsigned Opc)

static int	getMemScale (MachineInstr &MI)

static unsigned	getMatchingNonSExtOpcode (unsigned Opc, bool *IsValidLdStrOpc=nullptr)

static unsigned	getMatchingWideOpcode (unsigned Opc)

static unsigned	getMatchingPairOpcode (unsigned Opc)

static unsigned	isMatchingStore (MachineInstr &LoadInst, MachineInstr &StoreInst)

static unsigned	getPreIndexedOpcode (unsigned Opc)

static unsigned	getPostIndexedOpcode (unsigned Opc)

static bool	isPairedLdSt (const MachineInstr &MI)

static const MachineOperand &	getLdStRegOp (const MachineInstr &MI, unsigned PairedRegOp=0)

static const MachineOperand &	getLdStBaseOp (const MachineInstr &MI)

static const MachineOperand &	getLdStOffsetOp (const MachineInstr &MI)

static bool	isLdOffsetInRangeOfSt (MachineInstr &LoadInst, MachineInstr &StoreInst, const AArch64InstrInfo *TII)

static bool	isPromotableZeroStoreInst (MachineInstr &MI)

static bool	isPromotableLoadFromStore (MachineInstr &MI)

static bool	isMergeableLdStUpdate (MachineInstr &MI)

static bool	inBoundsForPair (bool IsUnscaled, int Offset, int OffsetStride)

static int	alignTo (int Num, int PowOf2)

static bool	mayAlias (MachineInstr &MIa, MachineInstr &MIb, AliasAnalysis *AA)

static bool	mayAlias (MachineInstr &MIa, SmallVectorImpl< MachineInstr > &MemInsns, AliasAnalysis AA)

static bool	areCandidatesToMergeOrPair (MachineInstr &FirstMI, MachineInstr &MI, LdStPairFlags &Flags, const AArch64InstrInfo *TII)

Variables
static cl::opt< unsigned >	LdStLimit ("aarch64-load-store-scan-limit", cl::init(20), cl::Hidden)

static cl::opt< unsigned >	UpdateLimit ("aarch64-update-scan-limit", cl::init(100), cl::Hidden)