CFIFixup.cpp File Reference

#include "llvm/CodeGen/CFIFixup.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/Target/TargetMachine.h"
#include <iterator>

Go to the source code of this file.

Classes
struct	BlockFlags
struct	InsertionPoint

Macros
#define	DEBUG_TYPE   "cfi-fixup"

Typedefs
using	BlockFlagsVector = SmallVector< BlockFlags, 32 >

Functions
	INITIALIZE_PASS (CFIFixup, "cfi-fixup", "Insert CFI remember/restore state instructions", false, false) FunctionPass *llvm
static bool	isPrologueCFIInstruction (const MachineInstr &MI)
static bool	containsEpilogue (const MachineBasicBlock &MBB)
static MachineBasicBlock *	findPrologueEnd (MachineFunction &MF, MachineBasicBlock::iterator &PrologueEnd)
static BlockFlagsVector	computeBlockInfo (const MachineFunction &MF, const MachineBasicBlock *PrologueBlock)
static InsertionPoint	insertRememberRestorePair (const InsertionPoint &RememberInsertPt, const InsertionPoint &RestoreInsertPt)
static InsertionPoint	cloneCfiPrologue (const InsertionPoint &PrologueEnd, const InsertionPoint &DstInsertPt)
static bool	fixupBlock (MachineBasicBlock &CurrBB, const BlockFlagsVector &BlockInfo, SmallDenseMap< MBBSectionID, InsertionPoint > &InsertionPts, const InsertionPoint &Prologue)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "cfi-fixup"

Definition at line 89 of file CFIFixup.cpp.

Typedef Documentation

BlockFlagsVector

using BlockFlagsVector = SmallVector<BlockFlags, 32>

Definition at line 140 of file CFIFixup.cpp.

Function Documentation

cloneCfiPrologue()

static InsertionPoint cloneCfiPrologue ( const InsertionPoint &  PrologueEnd, const InsertionPoint &  DstInsertPt  )

static

Definition at line 220 of file CFIFixup.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineFunction::begin(), llvm::MachineFunction::CloneMachineInstr(), llvm::MachineBasicBlock::end(), End, llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineBasicBlock::getParent(), llvm::MachineBasicBlock::insert(), isPrologueCFIInstruction(), InsertionPoint::Iterator, llvm::make_filter_range(), llvm::make_range(), llvm::map_range(), InsertionPoint::MBB, MBB, and MI.

Referenced by fixupBlock().

computeBlockInfo()

static BlockFlagsVector computeBlockInfo ( const MachineFunction &  MF, const MachineBasicBlock *  PrologueBlock  )

static

Definition at line 145 of file CFIFixup.cpp.

References llvm::MachineFunction::begin(), containsEpilogue(), llvm::MachineBasicBlock::getNumber(), llvm::MachineFunction::getNumBlockIDs(), BlockFlags::HasFrameOnEntry, Info, MBB, BlockFlags::Reachable, BlockFlags::StrongNoFrameOnEntry, and llvm::MachineBasicBlock::successors().

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

containsEpilogue()

static bool containsEpilogue ( const MachineBasicBlock &  MBB )

static

Definition at line 102 of file CFIFixup.cpp.

References llvm::any_of(), llvm::MachineInstr::FrameDestroy, MBB, MI, and llvm::reverse().

Referenced by computeBlockInfo().

findPrologueEnd()

static MachineBasicBlock * findPrologueEnd ( MachineFunction &  MF, MachineBasicBlock::iterator &  PrologueEnd  )

static

Definition at line 110 of file CFIFixup.cpp.

References llvm::MachineBasicBlock::instrs(), isPrologueCFIInstruction(), MBB, MI, and llvm::reverse().

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

fixupBlock()

static bool fixupBlock ( MachineBasicBlock &  CurrBB, const BlockFlagsVector &  BlockInfo, SmallDenseMap< MBBSectionID, InsertionPoint > &  InsertionPts, const InsertionPoint &  Prologue  )

static

Definition at line 245 of file CFIFixup.cpp.

References assert(), llvm::MachineBasicBlock::begin(), cloneCfiPrologue(), llvm::TargetFrameLowering::enableFullCFIFixup(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineBasicBlock::getNumber(), llvm::MachineBasicBlock::getParent(), llvm::MachineBasicBlock::getSectionID(), llvm::MachineFunction::getSubtarget(), BlockFlags::HasFrameOnExit, Info, insertRememberRestorePair(), llvm::MachineBasicBlock::isBeginSection(), InsertionPoint::MBB, llvm::MachineBasicBlock::predecessors(), BlockFlags::Reachable, and llvm::TargetFrameLowering::resetCFIToInitialState().

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

INITIALIZE_PASS()

INITIALIZE_PASS	(	CFIFixup	,
		"cfi-fixup"	,
		"Insert CFI remember/restore state instructions"	,
		false	,
		false
	)

Definition at line 93 of file CFIFixup.cpp.

insertRememberRestorePair()

static InsertionPoint insertRememberRestorePair ( const InsertionPoint &  RememberInsertPt, const InsertionPoint &  RestoreInsertPt  )

static

Definition at line 195 of file CFIFixup.cpp.

References llvm::MachineInstrBuilder::addCFIIndex(), llvm::MachineFunction::addFrameInst(), llvm::BuildMI(), llvm::MCCFIInstruction::createRememberState(), llvm::MCCFIInstruction::createRestoreState(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getSubtarget(), InsertionPoint::Iterator, InsertionPoint::MBB, and TII.

Referenced by fixupBlock().

isPrologueCFIInstruction()

static bool isPrologueCFIInstruction ( const MachineInstr &  MI )

static

Definition at line 97 of file CFIFixup.cpp.

References llvm::MachineInstr::FrameSetup, and MI.

Referenced by cloneCfiPrologue(), and findPrologueEnd().