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
19namespace 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.
26class AMDGPUFrameLowering : public TargetFrameLowering {
27public:
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