AMDGPUFrameLowering.h

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//===--------------------- AMDGPUFrameLowering.h ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// Interface to describe a layout of a stack frame on an AMDGPU target.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H
#define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H
 
#include "llvm/CodeGen/TargetFrameLowering.h"
 
namespace llvm {
 
/// Information about the stack frame layout on the AMDGPU targets.
///
/// It holds the direction of the stack growth, the known stack alignment on
/// entry to each function, and the offset to the locals area.
/// See TargetFrameInfo for more comments.
class AMDGPUFrameLowering : public TargetFrameLowering {
public:
  AMDGPUFrameLowering(StackDirection D, Align StackAl, int LAO,
                      Align TransAl = Align(1));
  ~AMDGPUFrameLowering() override;
 
  /// \returns The number of 32-bit sub-registers that are used when storing
  /// values to the stack.
  unsigned getStackWidth(const MachineFunction &MF) const;
};
 
} // end namespace llvm
 
#endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H