1 //===--------------------- AMDGPUFrameLowering.h ----------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 /// \file 10 /// Interface to describe a layout of a stack frame on an AMDGPU target. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 15 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 16 17 #include "llvm/CodeGen/TargetFrameLowering.h" 18 19 namespace llvm { 20 21 /// 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. 26 class AMDGPUFrameLowering : public TargetFrameLowering { 27 public: 28 AMDGPUFrameLowering(StackDirection D, Align StackAl, int LAO, 29 Align TransAl = Align(1)); 30 ~AMDGPUFrameLowering() override; 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 37 } // end namespace llvm 38 39 #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H 40