1 //===-- DirectXFrameLowering.h - Frame lowering for DirectX --*- 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 // This class implements DirectX-specific bits of TargetFrameLowering class.
10 // This is just a stub because the current DXIL backend does not actually lower
11 // through the MC layer.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
16 #define LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
17 
18 #include "llvm/CodeGen/TargetFrameLowering.h"
19 #include "llvm/Support/Alignment.h"
20 
21 namespace llvm {
22 class DirectXSubtarget;
23 
24 class DirectXFrameLowering : public TargetFrameLowering {
25 public:
26   explicit DirectXFrameLowering(const DirectXSubtarget &STI)
27       : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(8), 0) {}
28 
29   void emitPrologue(MachineFunction &, MachineBasicBlock &) const override {}
30   void emitEpilogue(MachineFunction &, MachineBasicBlock &) const override {}
31 
32   bool hasFP(const MachineFunction &) const override { return false; }
33 };
34 } // namespace llvm
35 #endif // LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
36