LLVM: lib/Target/X86/X86AvoidStoreForwardingBlocks.cpp File Reference (original) (raw)

Go to the source code of this file.

Macros
#define	DEBUG_TYPE "x86-avoid-SFB"

Functions
	INITIALIZE_PASS_BEGIN (X86AvoidSFBPass, DEBUG_TYPE, "Machine code sinking", false, false) INITIALIZE_PASS_END(X86AvoidSFBPass
static bool	isXMMLoadOpcode (unsigned Opcode)
static bool	isYMMLoadOpcode (unsigned Opcode)
static bool	isPotentialBlockedMemCpyLd (unsigned Opcode)
static bool	isPotentialBlockedMemCpyPair (unsigned LdOpcode, unsigned StOpcode)
static bool	isPotentialBlockingStoreInst (unsigned Opcode, unsigned LoadOpcode)
static unsigned	getYMMtoXMMLoadOpcode (unsigned LoadOpcode)
static unsigned	getYMMtoXMMStoreOpcode (unsigned StoreOpcode)
static int	getAddrOffset (const MachineInstr *MI)
static MachineOperand &	getBaseOperand (MachineInstr *MI)
static MachineOperand &	getDispOperand (MachineInstr *MI)
static bool	isRelevantAddressingMode (MachineInstr *MI)
static SmallVector< MachineInstr *, 2 >	findPotentialBlockers (MachineInstr *LoadInst)
static void	updateKillStatus (MachineInstr LoadInst, MachineInstr StoreInst)
static bool	hasSameBaseOpValue (MachineInstr LoadInst, MachineInstr StoreInst)
static bool	isBlockingStore (int64_t LoadDispImm, unsigned LoadSize, int64_t StoreDispImm, unsigned StoreSize)
static void	updateBlockingStoresDispSizeMap (DisplacementSizeMap &BlockingStoresDispSizeMap, int64_t DispImm, unsigned Size)
static void	removeRedundantBlockingStores (DisplacementSizeMap &BlockingStoresDispSizeMap)

Variables
static cl::opt< bool >	DisableX86AvoidStoreForwardBlocks ("x86-disable-avoid-SFB", cl::Hidden, cl::desc("X86: Disable Store Forwarding Blocks fixup."), cl::init(false))
static cl::opt< unsigned >	X86AvoidSFBInspectionLimit ("x86-sfb-inspection-limit", cl::desc("X86: Number of instructions backward to " "inspect for store forwarding blocks."), cl::init(20), cl::Hidden)
	DEBUG_TYPE
Machine code	sinking
Machine code	false
static const int	MOV128SZ = 16
static const int	MOV64SZ = 8
static const int	MOV32SZ = 4
static const int	MOV16SZ = 2
static const int	MOV8SZ = 1

◆ DEBUG_TYPE

#define DEBUG_TYPE "x86-avoid-SFB"

◆ findPotentialBlockers()

◆ getAddrOffset()

◆ getBaseOperand()

◆ getDispOperand()

◆ getYMMtoXMMLoadOpcode()

◆ getYMMtoXMMStoreOpcode()

◆ hasSameBaseOpValue()

◆ INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	X86AvoidSFBPass	,
DEBUG_TYPE	,
"Machine code sinking"	,
false	,
false	)

◆ isBlockingStore()

bool isBlockingStore ( int64_t LoadDispImm, unsigned LoadSize, int64_t StoreDispImm, unsigned StoreSize )	static

◆ isPotentialBlockedMemCpyLd()

◆ isPotentialBlockedMemCpyPair()

◆ isPotentialBlockingStoreInst()

◆ isRelevantAddressingMode()

Definition at line 311 of file X86AvoidStoreForwardingBlocks.cpp.

References llvm::X86::AddrIndexReg, llvm::X86::AddrScaleAmt, llvm::X86::AddrSegmentReg, llvm::sampleprof::Base, getAddrOffset(), getBaseOperand(), getDispOperand(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), and MI.

◆ isXMMLoadOpcode()

◆ isYMMLoadOpcode()

◆ removeRedundantBlockingStores()

void removeRedundantBlockingStores ( DisplacementSizeMap & BlockingStoresDispSizeMap)	static

◆ updateBlockingStoresDispSizeMap()

void updateBlockingStoresDispSizeMap ( DisplacementSizeMap & BlockingStoresDispSizeMap, int64_t DispImm, unsigned Size )	static

◆ updateKillStatus()

◆ DEBUG_TYPE

◆ DisableX86AvoidStoreForwardBlocks

cl::opt< bool > DisableX86AvoidStoreForwardBlocks("x86-disable-avoid-SFB", cl::Hidden, cl::desc("X86: Disable Store Forwarding Blocks fixup."), cl::init(false)) ( "x86-disable-avoid-SFB" , cl::Hidden , cl::desc("X86: Disable Store Forwarding Blocks fixup.") , cl::init(false) )	static

◆ false

◆ MOV128SZ

◆ MOV16SZ

◆ MOV32SZ

◆ MOV64SZ

◆ MOV8SZ

◆ sinking

◆ X86AvoidSFBInspectionLimit

cl::opt< unsigned > X86AvoidSFBInspectionLimit("x86-sfb-inspection-limit", cl::desc("X86: Number of instructions backward to " "inspect for store forwarding blocks."), cl::init(20), cl::Hidden) ( "x86-sfb-inspection-limit" , cl::desc("X86: Number of instructions backward to " "inspect for store forwarding blocks.") , cl::init(20) , cl::Hidden )	static