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       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        2771 : 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