AArch64A53Fix835769.cpp File Reference

#include "AArch64.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

Include dependency graph for AArch64A53Fix835769.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "aarch64-fix-cortex-a53-835769"

Functions
	STATISTIC (NumNopsAdded, "Number of Nops added to work around erratum 835769")
static bool	isFirstInstructionInSequence (MachineInstr *MI)
static bool	isSecondInstructionInSequence (MachineInstr *MI)
	INITIALIZE_PASS (AArch64A53Fix835769, "aarch64-fix-cortex-a53-835769-pass", "AArch64 fix for A53 erratum 835769", false, false) bool AArch64A53Fix835769
static MachineBasicBlock *	getBBFallenThrough (MachineBasicBlock *MBB, const TargetInstrInfo *TII)
static MachineInstr *	getLastNonPseudo (MachineBasicBlock &MBB, const TargetInstrInfo *TII)
static void	insertNopBeforeInstruction (MachineBasicBlock &MBB, MachineInstr *MI, const TargetInstrInfo *TII)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "aarch64-fix-cortex-a53-835769"

Definition at line 31 of file AArch64A53Fix835769.cpp.

Function Documentation

getBBFallenThrough()

static MachineBasicBlock* getBBFallenThrough ( MachineBasicBlock *  MBB, const TargetInstrInfo *  TII  )

static

Definition at line 131 of file AArch64A53Fix835769.cpp.

References llvm::TargetInstrInfo::analyzeBranch(), llvm::MachineFunction::begin(), llvm::MachineBasicBlock::getParent(), and llvm::MachineBasicBlock::predecessors().

Referenced by getLastNonPseudo().

getLastNonPseudo()

static MachineInstr* getLastNonPseudo ( MachineBasicBlock &  MBB, const TargetInstrInfo *  TII  )

static

Definition at line 156 of file AArch64A53Fix835769.cpp.

References getBBFallenThrough(), I, llvm::make_range(), llvm::MachineBasicBlock::rbegin(), and llvm::MachineBasicBlock::rend().

Referenced by insertNopBeforeInstruction().

INITIALIZE_PASS()

INITIALIZE_PASS	(	AArch64A53Fix835769	,
		"aarch64-fix-cortex-a53-835769-pass"	,
		"AArch64 fix for A53 erratum 835769"	,
		false	,
		false
	)

Definition at line 112 of file AArch64A53Fix835769.cpp.

References llvm::dbgs(), LLVM_DEBUG, runOnBasicBlock(), and TII.

insertNopBeforeInstruction()

static void insertNopBeforeInstruction ( MachineBasicBlock &  MBB, MachineInstr *  MI, const TargetInstrInfo *  TII  )

static

Definition at line 172 of file AArch64A53Fix835769.cpp.

References assert(), llvm::BuildMI(), llvm::dbgs(), llvm::MachineBasicBlock::front(), llvm::MCInstrInfo::get(), llvm::MachineInstr::getDebugLoc(), getLastNonPseudo(), llvm::MachineInstr::getParent(), I, isFirstInstructionInSequence(), llvm::MachineInstr::isPseudo(), isSecondInstructionInSequence(), LLVM_DEBUG, MI, runOnBasicBlock(), and TII.

isFirstInstructionInSequence()

static bool isFirstInstructionInSequence ( MachineInstr *  MI )

static

Definition at line 40 of file AArch64A53Fix835769.cpp.

References llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::mayLoadOrStore().

Referenced by insertNopBeforeInstruction().

isSecondInstructionInSequence()

static bool isSecondInstructionInSequence ( MachineInstr *  MI )

static

Definition at line 56 of file AArch64A53Fix835769.cpp.

References F(), llvm::MachineFunctionPass::getAnalysisUsage(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::Pass::getPassName(), llvm::PassRegistry::getPassRegistry(), llvm::MachineOperand::getReg(), llvm::MachineFunctionPass::getRequiredProperties(), llvm::initializeAArch64A53Fix835769Pass(), llvm::MachineFunctionPass::MachineFunctionPass(), llvm::MachineFunctionProperties::NoVRegs, runOnBasicBlock(), llvm::MachineFunctionPass::runOnMachineFunction(), llvm::MachineFunctionProperties::set(), llvm::AnalysisUsage::setPreservesCFG(), and TII.

Referenced by insertNopBeforeInstruction().

STATISTIC()

STATISTIC	(	NumNopsAdded	,
		"Number of Nops added to work around erratum 835769"
	)