MachineSink.cpp File Reference

#include "llvm/CodeGen/Passes.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachinePostDominators.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"

Include dependency graph for MachineSink.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "machine-sink"
Functions
	STATISTIC (NumSunk,"Number of machine instructions sunk")
	STATISTIC (NumSplit,"Number of critical edges split")
	STATISTIC (NumCoalesces,"Number of copies coalesced")
	INITIALIZE_PASS_BEGIN (MachineSinking,"machine-sink","Machine code sinking", false, false) INITIALIZE_PASS_END(MachineSinking
static bool	AvoidsSinking (MachineInstr *MI, MachineRegisterInfo *MRI)
static void	collectDebugValues (MachineInstr *MI, SmallVectorImpl< MachineInstr * > &DbgValues)
Variables
static cl::opt< bool >	SplitEdges ("machine-sink-split", cl::desc("Split critical edges during machine sinking"), cl::init(true), cl::Hidden)
machine	sink
machine Machine code	sinking
machine Machine code	false

---

Define Documentation

#define DEBUG_TYPE   "machine-sink"

Definition at line 37 of file MachineSink.cpp.

---

Function Documentation

static bool AvoidsSinking	(	MachineInstr *	MI,
		MachineRegisterInfo *	MRI
	)		[static]

Definition at line 443 of file MachineSink.cpp.

References llvm::MachineInstr::isInsertSubreg(), llvm::MachineInstr::isRegSequence(), and llvm::MachineInstr::isSubregToReg().

static void collectDebugValues	(	MachineInstr *	MI,
		SmallVectorImpl< MachineInstr * > &	DbgValues
	)		[static]

collectDebgValues - Scan instructions following MI and collect any matching DBG_VALUEs.

Definition at line 449 of file MachineSink.cpp.

References llvm::SmallVectorImpl< T >::clear(), llvm::MachineBasicBlock::end(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), llvm::AArch64CC::MI, and llvm::SmallVectorTemplateBase< T, isPodLike >::push_back().

INITIALIZE_PASS_BEGIN	(	MachineSinking	,
		"machine-sink"	,
		"Machine code sinking"	,
		false	,
		false
	)

STATISTIC	(	NumSunk	,
		"Number of machine instructions sunk"
	)

STATISTIC	(	NumSplit	,
		"Number of critical edges split"
	)

STATISTIC	(	NumCoalesces	,
		"Number of copies coalesced"
	)

---

Variable Documentation

machine Machine code false

Definition at line 133 of file MachineSink.cpp.

void LICM::sink

sink - When an instruction is found to only be used outside of the loop, this function moves it to the exit blocks and patches up SSA form as needed. This method is guaranteed to remove the original instruction from its position, and may either delete it or move it to outside of the loop.

Definition at line 133 of file MachineSink.cpp.

machine Machine code sinking

Definition at line 133 of file MachineSink.cpp.

cl::opt<bool> SplitEdges("machine-sink-split", cl::desc("Split critical edges during machine sinking"), cl::init(true), cl::Hidden) [static]