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//====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the Evan Cheng and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares ARM-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//
#ifndef ARMMACHINEFUNCTIONINFO_H
#define ARMMACHINEFUNCTIONINFO_H
#include "ARMSubtarget.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
/// ARMFunctionInfo - This class is derived from MachineFunction private
/// ARM target-specific information for each MachineFunction.
class ARMFunctionInfo : public MachineFunctionInfo {
/// isThumb - True if this function is compiled under Thumb mode.
///
bool isThumb;
/// VarArgsRegSaveSize - Size of the register save area for vararg functions.
///
unsigned VarArgsRegSaveSize;
/// FramePtrSpilled - True if FP register is spilled. Set by
/// processFunctionBeforeCalleeSavedScan().
bool FramePtrSpilled;
/// FramePtrSpillOffset - If FramePtrSpilled, this records the frame pointer
/// spill stack offset.
unsigned FramePtrSpillOffset;
/// GPRCS1Offset, GPRCS2Offset, DPRCSOffset - Starting offset of callee saved
/// register spills areas. For Mac OS X:
///
/// GPR callee-saved (1) : r4, r5, r6, r7, lr
/// --------------------------------------------
/// GPR callee-saved (2) : r8, r10, r11
/// --------------------------------------------
/// DPR callee-saved : d8 - d15
unsigned GPRCS1Offset;
unsigned GPRCS2Offset;
unsigned DPRCSOffset;
/// GPRCS1Size, GPRCS2Size, DPRCSSize - Sizes of callee saved register spills
/// areas.
unsigned GPRCS1Size;
unsigned GPRCS2Size;
unsigned DPRCSSize;
/// GPRCS1Frames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices
/// which belong to these spill areas.
std::set<int> GPRCS1Frames;
std::set<int> GPRCS2Frames;
std::set<int> DPRCSFrames;
/// JumpTableUId - Unique id for jumptables.
///
unsigned JumpTableUId;
public:
ARMFunctionInfo() :
isThumb(false),
VarArgsRegSaveSize(0), FramePtrSpilled(false), FramePtrSpillOffset(0),
GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), JumpTableUId(0) {}
ARMFunctionInfo(MachineFunction &MF) :
isThumb(MF.getTarget().getSubtarget<ARMSubtarget>().isThumb()),
VarArgsRegSaveSize(0), FramePtrSpilled(false), FramePtrSpillOffset(0),
GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), JumpTableUId(0) {}
bool isThumbFunction() const { return isThumb; }
unsigned getVarArgsRegSaveSize() const { return VarArgsRegSaveSize; }
void setVarArgsRegSaveSize(unsigned s) { VarArgsRegSaveSize = s; }
bool isFramePtrSpilled() const { return FramePtrSpilled; }
void setFramePtrSpilled(bool s) { FramePtrSpilled = s; }
unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; }
void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; }
unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; }
unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; }
unsigned getDPRCalleeSavedAreaOffset() const { return DPRCSOffset; }
void setGPRCalleeSavedArea1Offset(unsigned o) { GPRCS1Offset = o; }
void setGPRCalleeSavedArea2Offset(unsigned o) { GPRCS2Offset = o; }
void setDPRCalleeSavedAreaOffset(unsigned o) { DPRCSOffset = o; }
unsigned getGPRCalleeSavedArea1Size() const { return GPRCS1Size; }
unsigned getGPRCalleeSavedArea2Size() const { return GPRCS2Size; }
unsigned getDPRCalleeSavedAreaSize() const { return DPRCSSize; }
void setGPRCalleeSavedArea1Size(unsigned s) { GPRCS1Size = s; }
void setGPRCalleeSavedArea2Size(unsigned s) { GPRCS2Size = s; }
void setDPRCalleeSavedAreaSize(unsigned s) { DPRCSSize = s; }
bool isGPRCalleeSavedArea1Frame(unsigned fi) const {
return GPRCS1Frames.count(fi);
}
bool isGPRCalleeSavedArea2Frame(unsigned fi) const {
return GPRCS2Frames.count(fi);
}
bool isDPRCalleeSavedAreaFrame(unsigned fi) const {
return DPRCSFrames.count(fi);
}
void addGPRCalleeSavedArea1Frame(unsigned fi) {
GPRCS1Frames.insert(fi);
}
void addGPRCalleeSavedArea2Frame(unsigned fi) {
GPRCS2Frames.insert(fi);
}
void addDPRCalleeSavedAreaFrame(unsigned fi) {
DPRCSFrames.insert(fi);
}
unsigned createJumpTableUId() {
return JumpTableUId++;
}
};
} // End llvm namespace
#endif // ARMMACHINEFUNCTIONINFO_H
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