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//===- ARCMachineFunctionInfo.h - ARC machine function info -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares ARC-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
#include "llvm/CodeGen/MachineFunction.h"
#include <vector>
namespace llvm {
/// ARCFunctionInfo - This class is derived from MachineFunction private
/// ARC target-specific information for each MachineFunction.
class ARCFunctionInfo : public MachineFunctionInfo {
virtual void anchor();
bool ReturnStackOffsetSet;
int VarArgsFrameIndex;
unsigned VarArgFrameBytes;
unsigned ReturnStackOffset;
public:
ARCFunctionInfo()
: ReturnStackOffsetSet(false), VarArgsFrameIndex(0), VarArgFrameBytes(0),
ReturnStackOffset(-1U), MaxCallStackReq(0) {}
explicit ARCFunctionInfo(MachineFunction &MF)
: ReturnStackOffsetSet(false), VarArgsFrameIndex(0), VarArgFrameBytes(0),
ReturnStackOffset(-1U), MaxCallStackReq(0) {
// Functions are 4-byte (2**2) aligned.
MF.setAlignment(2);
}
~ARCFunctionInfo() {}
void setVarArgsFrameIndex(int off) { VarArgsFrameIndex = off; }
int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
void setReturnStackOffset(unsigned value) {
assert(!ReturnStackOffsetSet && "Return stack offset set twice");
ReturnStackOffset = value;
ReturnStackOffsetSet = true;
}
unsigned getReturnStackOffset() const {
assert(ReturnStackOffsetSet && "Return stack offset not set");
return ReturnStackOffset;
}
unsigned MaxCallStackReq;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_ARC_ARCMACHINEFUNCTIONINFO_H
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