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 /// Interface to describe a layout of a stack frame on an AMDGPU target. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 16 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 17 18 #include "llvm/CodeGen/TargetFrameLowering.h" 19 20 namespace llvm { 21 22 /// Information about the stack frame layout on the AMDGPU targets. 23 /// 24 /// It holds the direction of the stack growth, the known stack alignment on 25 /// entry to each function, and the offset to the locals area. 26 /// See TargetFrameInfo for more comments. 27 class AMDGPUFrameLowering : public TargetFrameLowering { 28 public: 29 AMDGPUFrameLowering(StackDirection D, unsigned StackAl, int LAO, 30 unsigned TransAl = 1); 31 ~AMDGPUFrameLowering() override; 32 33 /// \returns The number of 32-bit sub-registers that are used when storing 34 /// values to the stack. 35 unsigned getStackWidth(const MachineFunction &MF) const; 36 }; 37 38 } // end namespace llvm 39 40 #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 41