| 1 | //===--------------------- AMDGPUFrameLowering.h ----------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | /// \file |
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| 10 | /// Interface to describe a layout of a stack frame on an AMDGPU target. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H |
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| 15 | #define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H |
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| 16 | |
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| 17 | #include "llvm/CodeGen/TargetFrameLowering.h" |
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| 18 | |
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| 19 | namespace llvm { |
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| 20 | |
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| 21 | /// Information about the stack frame layout on the AMDGPU targets. |
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| 22 | /// |
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| 23 | /// It holds the direction of the stack growth, the known stack alignment on |
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| 24 | /// entry to each function, and the offset to the locals area. |
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| 25 | /// See TargetFrameInfo for more comments. |
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| 26 | class AMDGPUFrameLowering : public TargetFrameLowering { |
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| 27 | public: |
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| 28 | AMDGPUFrameLowering(StackDirection D, Align StackAl, int LAO, |
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| 29 | Align TransAl = Align(1)); |
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| 30 | ~AMDGPUFrameLowering() override; |
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| 31 | |
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| 32 | /// \returns The number of 32-bit sub-registers that are used when storing |
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| 33 | /// values to the stack. |
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| 34 | unsigned getStackWidth(const MachineFunction &MF) const; |
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| 35 | }; |
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| 36 | |
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| 37 | } // end namespace llvm |
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| 38 | |
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| 39 | #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H |
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| 40 | |
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