mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
f15f498507
return 0 if there are no function calls made. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132065 91177308-0d34-0410-b5e6-96231b3b80d8
99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
//===-- MipsMachineFunctionInfo.h - Private data used for Mips ----*- 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 the Mips specific subclass of MachineFunctionInfo.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef MIPS_MACHINE_FUNCTION_INFO_H
|
|
#define MIPS_MACHINE_FUNCTION_INFO_H
|
|
|
|
#include <utility>
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/VectorExtras.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// MipsFunctionInfo - This class is derived from MachineFunction private
|
|
/// Mips target-specific information for each MachineFunction.
|
|
class MipsFunctionInfo : public MachineFunctionInfo {
|
|
|
|
private:
|
|
/// SRetReturnReg - Some subtargets require that sret lowering includes
|
|
/// returning the value of the returned struct in a register. This field
|
|
/// holds the virtual register into which the sret argument is passed.
|
|
unsigned SRetReturnReg;
|
|
|
|
/// GlobalBaseReg - keeps track of the virtual register initialized for
|
|
/// use as the global base register. This is used for PIC in some PIC
|
|
/// relocation models.
|
|
unsigned GlobalBaseReg;
|
|
|
|
/// VarArgsFrameIndex - FrameIndex for start of varargs area.
|
|
int VarArgsFrameIndex;
|
|
|
|
// Range of frame object indices.
|
|
// InArgFIRange: Range of indices of all frame objects created during call to
|
|
// LowerFormalArguments.
|
|
// OutArgFIRange: Range of indices of all frame objects created during call to
|
|
// LowerCall except for the frame object for restoring $gp.
|
|
std::pair<int, int> InArgFIRange, OutArgFIRange;
|
|
int GPFI; // Index of the frame object for restoring $gp
|
|
bool HasCall; // True if function has a function call.
|
|
unsigned MaxCallFrameSize;
|
|
public:
|
|
MipsFunctionInfo(MachineFunction& MF)
|
|
: SRetReturnReg(0), GlobalBaseReg(0),
|
|
VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
|
|
OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), HasCall(false),
|
|
MaxCallFrameSize(0)
|
|
{}
|
|
|
|
bool isInArgFI(int FI) const {
|
|
return FI <= InArgFIRange.first && FI >= InArgFIRange.second;
|
|
}
|
|
void setLastInArgFI(int FI) { InArgFIRange.second = FI; }
|
|
|
|
bool isOutArgFI(int FI) const {
|
|
return FI <= OutArgFIRange.first && FI >= OutArgFIRange.second;
|
|
}
|
|
void extendOutArgFIRange(int FirstFI, int LastFI) {
|
|
if (!OutArgFIRange.second)
|
|
// this must be the first time this function was called.
|
|
OutArgFIRange.first = FirstFI;
|
|
OutArgFIRange.second = LastFI;
|
|
}
|
|
|
|
int getGPFI() const { return GPFI; }
|
|
void setGPFI(int FI) { GPFI = FI; }
|
|
bool needGPSaveRestore() const { return getGPFI(); }
|
|
bool isGPFI(int FI) const { return GPFI && GPFI == FI; }
|
|
|
|
unsigned getSRetReturnReg() const { return SRetReturnReg; }
|
|
void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
|
|
|
|
unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
|
|
void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
|
|
|
|
int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
|
|
void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
|
|
|
|
bool hasCall() const { return HasCall; }
|
|
void setHasCall() { HasCall = true; }
|
|
|
|
unsigned getMaxCallFrameSize() const { return MaxCallFrameSize; }
|
|
void setMaxCallFrameSize(unsigned S) { MaxCallFrameSize = S; }
|
|
};
|
|
|
|
} // end of namespace llvm
|
|
|
|
#endif // MIPS_MACHINE_FUNCTION_INFO_H
|