1//===--------------------- AMDGPUFrameLowering.h ----------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10/// \file 11/// \brief Interface to describe a layout of a stack frame on an AMDGPU target. 12// 13//===----------------------------------------------------------------------===// 14#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 15#define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 16 17#include "llvm/Target/TargetFrameLowering.h" 18 19namespace llvm { 20 21/// \brief Information about the stack frame layout on the AMDGPU targets. 22/// 23/// It holds the direction of the stack growth, the known stack alignment on 24/// entry to each function, and the offset to the locals area. 25/// See TargetFrameInfo for more comments. 26class AMDGPUFrameLowering : public TargetFrameLowering { 27public: 28 AMDGPUFrameLowering(StackDirection D, unsigned StackAl, int LAO, 29 unsigned TransAl = 1); 30 virtual ~AMDGPUFrameLowering(); 31 32 /// \returns The number of 32-bit sub-registers that are used when storing 33 /// values to the stack. 34 unsigned getStackWidth(const MachineFunction &MF) const; 35 36 int getFrameIndexReference(const MachineFunction &MF, int FI, 37 unsigned &FrameReg) const override; 38 39 bool hasFP(const MachineFunction &MF) const override { 40 return false; 41 } 42}; 43} // namespace llvm 44#endif 45