#define LLVM_CODEGEN_VIRTREGMAP_H
#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/LiveInterval.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/IndexedMap.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallVector.h"
-#include <map>
namespace llvm {
- class LiveIntervals;
class MachineInstr;
class MachineFunction;
class MachineRegisterInfo;
class TargetInstrInfo;
- class TargetRegisterInfo;
class raw_ostream;
class SlotIndexes;
MAX_STACK_SLOT = (1L << 18)-1
};
- enum ModRef { isRef = 1, isMod = 2, isModRef = 3 };
- typedef std::multimap<MachineInstr*,
- std::pair<unsigned, ModRef> > MI2VirtMapTy;
-
private:
MachineRegisterInfo *MRI;
const TargetInstrInfo *TII;
const TargetRegisterInfo *TRI;
MachineFunction *MF;
- DenseMap<const TargetRegisterClass*, BitVector> allocatableRCRegs;
-
/// Virt2PhysMap - This is a virtual to physical register
/// mapping. Each virtual register is required to have an entry in
/// it; even spilled virtual registers (the register mapped to a
/// mapping.
IndexedMap<unsigned, VirtReg2IndexFunctor> Virt2SplitMap;
- /// LowSpillSlot, HighSpillSlot - Lowest and highest spill slot indexes.
- int LowSpillSlot, HighSpillSlot;
-
- /// SpillSlotToUsesMap - Records uses for each register spill slot.
- SmallVector<SmallPtrSet<MachineInstr*, 4>, 8> SpillSlotToUsesMap;
-
/// createSpillSlot - Allocate a spill slot for RC from MFI.
unsigned createSpillSlot(const TargetRegisterClass *RC);
public:
static char ID;
VirtRegMap() : MachineFunctionPass(ID), Virt2PhysMap(NO_PHYS_REG),
- Virt2StackSlotMap(NO_STACK_SLOT), Virt2SplitMap(0),
- LowSpillSlot(NO_STACK_SLOT), HighSpillSlot(NO_STACK_SLOT) { }
+ Virt2StackSlotMap(NO_STACK_SLOT), Virt2SplitMap(0) { }
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
/// the specified stack slot
void assignVirt2StackSlot(unsigned virtReg, int frameIndex);
- /// @brief Records a spill slot use.
- void addSpillSlotUse(int FrameIndex, MachineInstr *MI);
-
- /// @brief Returns true if spill slot has been used.
- bool isSpillSlotUsed(int FrameIndex) const {
- assert(FrameIndex >= 0 && "Spill slot index should not be negative!");
- return !SpillSlotToUsesMap[FrameIndex-LowSpillSlot].empty();
- }
-
- /// RemoveMachineInstrFromMaps - MI is being erased, remove it from the
- /// the folded instruction map and spill point map.
- void RemoveMachineInstrFromMaps(MachineInstr *MI);
-
/// rewrite - Rewrite all instructions in MF to use only physical registers
/// by mapping all virtual register operands to their assigned physical
/// registers.