DbgEntityHistoryCalculator.cpp File Reference

#include "llvm/CodeGen/DbgEntityHistoryCalculator.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <map>
#include <utility>

Include dependency graph for DbgEntityHistoryCalculator.cpp:

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Macros
#define	DEBUG_TYPE   "dwarfdebug"

Functions
static unsigned	isDescribedByReg (const MachineInstr &MI)
static void	dropRegDescribedVar (RegDescribedVarsMap &RegVars, unsigned RegNo, InlinedEntity Var)
static void	addRegDescribedVar (RegDescribedVarsMap &RegVars, unsigned RegNo, InlinedEntity Var)
static void	clobberRegisterUses (RegDescribedVarsMap &RegVars, RegDescribedVarsMap::iterator I, DbgValueHistoryMap &HistMap, const MachineInstr &ClobberingInstr)
static void	clobberRegisterUses (RegDescribedVarsMap &RegVars, unsigned RegNo, DbgValueHistoryMap &HistMap, const MachineInstr &ClobberingInstr)
static const MachineInstr *	getFirstEpilogueInst (const MachineBasicBlock &MBB)
static void	collectChangingRegs (const MachineFunction *MF, const TargetRegisterInfo *TRI, BitVector &Regs)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "dwarfdebug"

Definition at line 32 of file DbgEntityHistoryCalculator.cpp.

Function Documentation

addRegDescribedVar()

static void addRegDescribedVar ( RegDescribedVarsMap &  RegVars, unsigned  RegNo, InlinedEntity  Var  )

static

Definition at line 109 of file DbgEntityHistoryCalculator.cpp.

References assert(), and llvm::is_contained().

Referenced by llvm::calculateDbgEntityHistory().

clobberRegisterUses() [1/2]

static void clobberRegisterUses ( RegDescribedVarsMap &  RegVars, RegDescribedVarsMap::iterator  I, DbgValueHistoryMap &  HistMap, const MachineInstr &  ClobberingInstr  )

static

Definition at line 119 of file DbgEntityHistoryCalculator.cpp.

References llvm::DbgValueHistoryMap::endInstrRange().

Referenced by llvm::calculateDbgEntityHistory(), and clobberRegisterUses().

clobberRegisterUses() [2/2]

static void clobberRegisterUses ( RegDescribedVarsMap &  RegVars, unsigned  RegNo, DbgValueHistoryMap &  HistMap, const MachineInstr &  ClobberingInstr  )

static

Definition at line 132 of file DbgEntityHistoryCalculator.cpp.

References clobberRegisterUses(), and I.

collectChangingRegs()

static void collectChangingRegs ( const MachineFunction *  MF, const TargetRegisterInfo *  TRI, BitVector &  Regs  )

static

Definition at line 165 of file DbgEntityHistoryCalculator.cpp.

References llvm::MachineInstr::FrameSetup, getFirstEpilogueInst(), llvm::MCRegAliasIterator::isValid(), llvm::TargetRegisterInfo::isVirtualRegister(), MI, llvm::BitVector::set(), llvm::BitVector::setBitsNotInMask(), and TRI.

Referenced by llvm::calculateDbgEntityHistory().

dropRegDescribedVar()

static void dropRegDescribedVar ( RegDescribedVarsMap &  RegVars, unsigned  RegNo, InlinedEntity  Var  )

static

Definition at line 95 of file DbgEntityHistoryCalculator.cpp.

References assert(), llvm::find(), and I.

Referenced by llvm::calculateDbgEntityHistory().

getFirstEpilogueInst()

static const MachineInstr* getFirstEpilogueInst ( const MachineBasicBlock &  MBB )

static

Definition at line 143 of file DbgEntityHistoryCalculator.cpp.

References llvm::MachineBasicBlock::begin(), E, llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getLastNonDebugInstr(), I, and llvm::MachineBasicBlock::rend().

Referenced by collectChangingRegs().

isDescribedByReg()

static unsigned isDescribedByReg ( const MachineInstr &  MI )

static

Definition at line 37 of file DbgEntityHistoryCalculator.cpp.

References assert(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::isDebugValue(), and llvm::MachineOperand::isReg().

Referenced by llvm::calculateDbgEntityHistory(), llvm::DbgValueHistoryMap::getRegisterForVar(), INITIALIZE_PASS(), and isDbgValueDescribedByReg().