PrologEpilogInserter.cpp File Reference

#include "PrologEpilogInserter.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/CodeGen/StackProtector.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include <climits>

Include dependency graph for PrologEpilogInserter.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "pei"
Typedefs
typedef SmallSetVector< int, 8 >	StackObjSet
	StackObjSet - A set of stack object indexes.
Functions
	INITIALIZE_PASS_BEGIN (PEI,"prologepilog","Prologue/Epilogue Insertion", false, false) INITIALIZE_PASS_END(PEI
Prologue Epilogue Insertion &Frame false	STATISTIC (NumScavengedRegs,"Number of frame index regs scavenged")
	STATISTIC (NumBytesStackSpace,"Number of bytes used for stack in all functions")
static void	AdjustStackOffset (MachineFrameInfo *MFI, int FrameIdx, bool StackGrowsDown, int64_t &Offset, unsigned &MaxAlign)
	AdjustStackOffset - Helper function used to adjust the stack frame offset.
static void	AssignProtectedObjSet (const StackObjSet &UnassignedObjs, SmallSet< int, 16 > &ProtectedObjs, MachineFrameInfo *MFI, bool StackGrowsDown, int64_t &Offset, unsigned &MaxAlign)
Variables
static cl::opt< unsigned >	WarnStackSize ("warn-stack-size", cl::Hidden, cl::init((unsigned)-1), cl::desc("Warn for stack size bigger than the given"" number"))
	prologepilog
Prologue Epilogue Insertion &Frame	Finalization
Prologue Epilogue Insertion &Frame	false

---

Define Documentation

#define DEBUG_TYPE   "pei"

Definition at line 49 of file PrologEpilogInserter.cpp.

---

Typedef Documentation

typedef SmallSetVector<int, 8> StackObjSet

StackObjSet - A set of stack object indexes.

Definition at line 107 of file PrologEpilogInserter.cpp.

---

Function Documentation

static void AdjustStackOffset	(	MachineFrameInfo *	MFI,
		int	FrameIdx,
		bool	StackGrowsDown,
		int64_t &	Offset,
		unsigned &	MaxAlign
	)		[inline, static]

AdjustStackOffset - Helper function used to adjust the stack frame offset.

Definition at line 403 of file PrologEpilogInserter.cpp.

References llvm::dbgs(), DEBUG, llvm::MachineFrameInfo::getObjectAlignment(), llvm::MachineFrameInfo::getObjectSize(), and llvm::MachineFrameInfo::setObjectOffset().

Referenced by AssignProtectedObjSet().

void LocalStackSlotPass::AssignProtectedObjSet	(	const StackObjSet &	UnassignedObjs,
		SmallSet< int, 16 > &	ProtectedObjs,
		MachineFrameInfo *	MFI,
		bool	StackGrowsDown,
		int64_t &	Offset,
		unsigned &	MaxAlign
	)		[static]

AssignProtectedObjSet - Helper function to assign large stack objects (i.e., those required to be close to the Stack Protector) to stack offsets.

Definition at line 432 of file PrologEpilogInserter.cpp.

References AdjustStackOffset(), llvm::SetVector< T, Vector, Set >::begin(), llvm::SetVector< T, Vector, Set >::end(), I, and llvm::SmallSet< T, N, C >::insert().

INITIALIZE_PASS_BEGIN	(	PEI	,
		"prologepilog"	,
		"Prologue/Epilogue Insertion"	,
		false	,
		false
	)

Prologue Epilogue Insertion& Frame false STATISTIC	(	NumScavengedRegs	,
		"Number of frame index regs scavenged"
	)

STATISTIC	(	NumBytesStackSpace	,
		"Number of bytes used for stack in all functions"
	)

---

Variable Documentation

Prologue Epilogue Insertion& Frame false

Definition at line 65 of file PrologEpilogInserter.cpp.

Prologue Epilogue Insertion& Frame Finalization

Definition at line 65 of file PrologEpilogInserter.cpp.

prologepilog

Definition at line 65 of file PrologEpilogInserter.cpp.

cl::opt<unsigned> WarnStackSize("warn-stack-size", cl::Hidden, cl::init((unsigned)-1), cl::desc("Warn for stack size bigger than the given"" number")) [static]

Referenced by llvm::PEI::runOnMachineFunction().