X86WinEHUnwindV2.cpp File Reference

#include "MCTargetDesc/X86BaseInfo.h"
#include "X86.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Module.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "x86-wineh-unwindv2"

Functions
	STATISTIC (MeetsUnwindV2Criteria, "Number of functions that meet Unwind v2 criteria")
	STATISTIC (FailsUnwindV2Criteria, "Number of functions that fail Unwind v2 criteria")
	INITIALIZE_PASS (X86WinEHUnwindV2Legacy, "x86-wineh-unwindv2", "Analyze and emit instructions for Win64 Unwind v2", false, false) FunctionPass *llvm
DebugLoc	findDebugLoc (const MachineBasicBlock &MBB)
std::optional< FrameInfo >	runAnalysisOnFuncOrFunclet (MachineFunction &MF, MachineFunction::iterator &Iter, WinX64EHUnwindV2Mode Mode)
bool	runX86WinEHUnwindV2 (MachineFunction &MF)

Variables
static cl::opt< unsigned >	UnwindCodeThreshold ("x86-wineh-unwindv2-unwind-codes-threshold", cl::Hidden, cl::desc("Maximum number of unwind codes before " "splitting into a new unwind info."), cl::init(UINT8_MAX))
static cl::opt< unsigned >	ForceMode ("x86-wineh-unwindv2-force-mode", cl::Hidden, cl::desc("Overwrites the Unwind v2 mode for testing purposes."))
static cl::opt< unsigned >	InstructionCountThreshold ("x86-wineh-unwindv2-instruction-count-threshold", cl::Hidden, cl::desc("Maximum number of (approximate) instructions before splitting " "into a new unwind info."), cl::init(600))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "x86-wineh-unwindv2"

Definition at line 29 of file X86WinEHUnwindV2.cpp.

Function Documentation

findDebugLoc()

DebugLoc findDebugLoc

(

const MachineBasicBlock &

MBB

)

Definition at line 112 of file X86WinEHUnwindV2.cpp.

References llvm::DebugLoc::getUnknown(), MBB, and MI.

Referenced by runX86WinEHUnwindV2().

INITIALIZE_PASS()

INITIALIZE_PASS	(	X86WinEHUnwindV2Legacy	,
		"x86-wineh-unwindv2"	,
		"Analyze and emit instructions for Win64 Unwind v2"	,
		false	,
		false	)

Definition at line 104 of file X86WinEHUnwindV2.cpp.

References llvm::createX86WinEHUnwindV2LegacyPass().

runAnalysisOnFuncOrFunclet()

std::optional< FrameInfo > runAnalysisOnFuncOrFunclet	(	MachineFunction &	MF,
		MachineFunction::iterator &	Iter,
		WinX64EHUnwindV2Mode	Mode )

Definition at line 122 of file X86WinEHUnwindV2.cpp.

References assert(), llvm::MachineFunction::end(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineFunction::getSubtarget(), llvm::TargetFrameLowering::hasFP(), llvm::is_contained(), llvm_unreachable, MBB, MI, Mode, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Reg, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by runX86WinEHUnwindV2().

runX86WinEHUnwindV2()

bool runX86WinEHUnwindV2

(

MachineFunction &

MF

)

Definition at line 375 of file X86WinEHUnwindV2.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineFunction::begin(), llvm::BuildMI(), llvm::Disabled, DL, llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::MachineFunction::end(), findDebugLoc(), ForceMode, llvm::MachineBasicBlock::front(), llvm::MachineFunction::front(), llvm::MachineFunction::getFunction(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::GlobalValue::getParent(), llvm::MachineFunction::getSubtarget(), llvm::Module::getWinX64EHUnwindV2Mode(), InstructionCountThreshold, MBB, Mode, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::reverse(), runAnalysisOnFuncOrFunclet(), TII, and UnwindCodeThreshold.

Referenced by llvm::X86WinEHUnwindV2Pass::run().

STATISTIC() [1/2]

STATISTIC	(	FailsUnwindV2Criteria	,
		"Number of functions that fail Unwind v2 criteria"	)

STATISTIC() [2/2]

STATISTIC	(	MeetsUnwindV2Criteria	,
		"Number of functions that meet Unwind v2 criteria"	)

Variable Documentation

ForceMode

cl::opt< unsigned > ForceMode("x86-wineh-unwindv2-force-mode", cl::Hidden, cl::desc("Overwrites the Unwind v2 mode for testing purposes.")) ( "x86-wineh-unwindv2-force-mode" , cl::Hidden , cl::desc("Overwrites the Unwind v2 mode for testing purposes.")  )

static

Referenced by runX86WinEHUnwindV2().

InstructionCountThreshold

cl::opt< unsigned > InstructionCountThreshold("x86-wineh-unwindv2-instruction-count-threshold", cl::Hidden, cl::desc("Maximum number of (approximate) instructions before splitting " "into a new unwind info."), cl::init(600)) ( "x86-wineh-unwindv2-instruction-count-threshold" , cl::Hidden , cl::desc("Maximum number of (approximate) instructions before splitting " "into a new unwind info.") , cl::init(600)  )

static

Referenced by runX86WinEHUnwindV2().

UnwindCodeThreshold

cl::opt< unsigned > UnwindCodeThreshold("x86-wineh-unwindv2-unwind-codes-threshold", cl::Hidden, cl::desc("Maximum number of unwind codes before " "splitting into a new unwind info."), cl::init(UINT8_MAX)) ( "x86-wineh-unwindv2-unwind-codes-threshold" , cl::Hidden , cl::desc("Maximum number of unwind codes before " "splitting into a new unwind info.") , cl::init(UINT8_MAX)  )

static

Referenced by runX86WinEHUnwindV2().