RISCVMakeCompressible.cpp File Reference

#include "RISCV.h"
#include "RISCVSubtarget.h"
#include "llvm/CodeGen/MachineFunctionAnalysisManager.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/IR/Analysis.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "riscv-make-compressible"
#define	RISCV_COMPRESS_INSTRS_NAME   "RISC-V Make Compressible"

Functions
	INITIALIZE_PASS (RISCVMakeCompressibleLegacy, "riscv-make-compressible", RISCV_COMPRESS_INSTRS_NAME, false, false) static unsigned log2LdstWidth(unsigned Opcode)
static unsigned	offsetMask (unsigned Opcode)
static uint8_t	compressedLDSTOffsetMask (unsigned Opcode)
static bool	compressibleSPOffset (int64_t Offset, unsigned Opcode)
static int64_t	getBaseAdjustForCompression (int64_t Offset, unsigned Opcode)
static bool	isCompressedReg (Register Reg)
static bool	isCompressibleLoad (const MachineInstr &MI)
static bool	isCompressibleStore (const MachineInstr &MI)
static RegImmPair	getRegImmPairPreventingCompression (const MachineInstr &MI)
static bool	isXqciloLdSt (const MachineInstr &MI)
static Register	analyzeCompressibleUses (MachineInstr &FirstMI, RegImmPair RegImm, SmallVectorImpl< MachineInstr * > &MIs)
static void	updateOperands (MachineInstr &MI, RegImmPair OldRegImm, Register NewReg)
static bool	runMakeCompressibleOpt (MachineFunction &Fn)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "riscv-make-compressible"

Definition at line 82 of file RISCVMakeCompressible.cpp.

RISCV_COMPRESS_INSTRS_NAME

#define RISCV_COMPRESS_INSTRS_NAME   "RISC-V Make Compressible"

Definition at line 83 of file RISCVMakeCompressible.cpp.

Referenced by INITIALIZE_PASS().

Function Documentation

analyzeCompressibleUses()

Register analyzeCompressibleUses ( MachineInstr & FirstMI, RegImmPair RegImm, SmallVectorImpl< MachineInstr * > & MIs )

static

Definition at line 360 of file RISCVMakeCompressible.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), contains(), E(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), getRegImmPairPreventingCompression(), I, llvm::RegImmPair::Imm, isXqciloLdSt(), MBB, MI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::RegImmPair::Reg, Register, llvm::SmallVectorTemplateCommon< T, typename >::size(), and TRI.

Referenced by runMakeCompressibleOpt().

compressedLDSTOffsetMask()

uint8_t compressedLDSTOffsetMask ( unsigned Opcode )

static

Definition at line 184 of file RISCVMakeCompressible.cpp.

References offsetMask().

Referenced by getBaseAdjustForCompression(), and updateOperands().

compressibleSPOffset()

bool compressibleSPOffset ( int64_t Offset, unsigned Opcode )

static

Definition at line 190 of file RISCVMakeCompressible.cpp.

References llvm::isShiftedUInt(), and llvm::Offset.

Referenced by getRegImmPairPreventingCompression().

getBaseAdjustForCompression()

int64_t getBaseAdjustForCompression ( int64_t Offset, unsigned Opcode )

static

Definition at line 204 of file RISCVMakeCompressible.cpp.

References compressedLDSTOffsetMask(), and llvm::Offset.

Referenced by getRegImmPairPreventingCompression().

getRegImmPairPreventingCompression()

RegImmPair getRegImmPairPreventingCompression ( const MachineInstr & MI )

static

Definition at line 297 of file RISCVMakeCompressible.cpp.

References llvm::sampleprof::Base, compressibleSPOffset(), contains(), getBaseAdjustForCompression(), llvm::MachineOperand::getImm(), isCompressedReg(), isCompressibleLoad(), isCompressibleStore(), llvm::MachineOperand::isImm(), MI, llvm::Offset, and Register.

Referenced by analyzeCompressibleUses(), and runMakeCompressibleOpt().

INITIALIZE_PASS()

INITIALIZE_PASS	(	RISCVMakeCompressibleLegacy	,
		"riscv-make-compressible"	,
		RISCV_COMPRESS_INSTRS_NAME	,
		false	,
		false	)

Definition at line 104 of file RISCVMakeCompressible.cpp.

References llvm_unreachable, and RISCV_COMPRESS_INSTRS_NAME.

isCompressedReg()

bool isCompressedReg ( Register Reg )

static

Definition at line 210 of file RISCVMakeCompressible.cpp.

References Reg.

Referenced by getRegImmPairPreventingCompression().

isCompressibleLoad()

bool isCompressibleLoad ( const MachineInstr & MI )

static

Definition at line 220 of file RISCVMakeCompressible.cpp.

References llvm::RISCVSubtarget::is64Bit(), and MI.

Referenced by getRegImmPairPreventingCompression(), and updateOperands().

isCompressibleStore()

bool isCompressibleStore ( const MachineInstr & MI )

static

Definition at line 254 of file RISCVMakeCompressible.cpp.

References llvm::RISCVSubtarget::is64Bit(), and MI.

Referenced by getRegImmPairPreventingCompression(), and updateOperands().

isXqciloLdSt()

bool isXqciloLdSt ( const MachineInstr & MI )

static

Definition at line 339 of file RISCVMakeCompressible.cpp.

References MI.

Referenced by analyzeCompressibleUses().

offsetMask()

unsigned offsetMask ( unsigned Opcode )

static

Definition at line 146 of file RISCVMakeCompressible.cpp.

References llvm_unreachable, and llvm::maskTrailingOnes().

Referenced by compressedLDSTOffsetMask().

runMakeCompressibleOpt()

bool runMakeCompressibleOpt ( MachineFunction & Fn )

static

Definition at line 481 of file RISCVMakeCompressible.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), analyzeCompressibleUses(), assert(), llvm::BuildMI(), contains(), llvm::dbgs(), llvm::MachineFunction::getFunction(), llvm::RISCVSubtarget::getInstrInfo(), getRegImmPairPreventingCompression(), llvm::MachineFunction::getSubtarget(), llvm::Function::hasOptSize(), llvm::isInt(), LLVM_DEBUG, MBB, MI, TII, and updateOperands().

Referenced by llvm::RISCVMakeCompressiblePass::run().

updateOperands()

void updateOperands ( MachineInstr & MI, RegImmPair OldRegImm, Register NewReg )

static

Definition at line 442 of file RISCVMakeCompressible.cpp.

References assert(), compressedLDSTOffsetMask(), llvm::drop_begin(), llvm::MachineOperand::getImm(), llvm::RegImmPair::Imm, isCompressibleLoad(), isCompressibleStore(), MI, llvm::RegImmPair::Reg, and llvm::MachineOperand::setImm().

Referenced by runMakeCompressibleOpt().