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//===- ARMConstantPoolValue.h - ARM constantpool value ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Evan Cheng and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the ARM specific constantpool value class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
#define LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
#include "llvm/CodeGen/MachineConstantPool.h"
namespace llvm {
/// ARMConstantPoolValue - ARM specific constantpool value. This is used to
/// represent PC relative displacement between the address of the load
/// instruction and the global value being loaded, i.e. (&GV-(LPIC+8)).
class ARMConstantPoolValue : public MachineConstantPoolValue {
GlobalValue *GV; // GlobalValue being loaded.
unsigned LabelId; // Label id of the load.
bool isNonLazyPtr; // True if loading a Mac OS X non_lazy_ptr stub.
unsigned char PCAdjust; // Extra adjustment if constantpool is pc relative.
// 8 for ARM, 4 for Thumb.
public:
ARMConstantPoolValue(GlobalValue *gv, unsigned id, bool isNonLazy = false,
unsigned char PCAdj = 0);
GlobalValue *getGV() const { return GV; }
unsigned getLabelId() const { return LabelId; }
bool isNonLazyPointer() const { return isNonLazyPtr; }
unsigned char getPCAdjustment() const { return PCAdjust; }
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID);
virtual void print(std::ostream &O) const;
};
}
#endif
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