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45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
//===--------------------- AMDGPUFrameLowering.h ----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief Interface to describe a layout of a stack frame on an AMDGPU target.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H
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#define LLVM_LIB_TARGET_AMDGPU_AMDGPUFRAMELOWERING_H
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#include "llvm/Target/TargetFrameLowering.h"
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namespace llvm {
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/// \brief Information about the stack frame layout on the AMDGPU targets.
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///
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/// It holds the direction of the stack growth, the known stack alignment on
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/// entry to each function, and the offset to the locals area.
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/// See TargetFrameInfo for more comments.
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class AMDGPUFrameLowering : public TargetFrameLowering {
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public:
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AMDGPUFrameLowering(StackDirection D, unsigned StackAl, int LAO,
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unsigned TransAl = 1);
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virtual ~AMDGPUFrameLowering();
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/// \returns The number of 32-bit sub-registers that are used when storing
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/// values to the stack.
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unsigned getStackWidth(const MachineFunction &MF) const;
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int getFrameIndexReference(const MachineFunction &MF, int FI,
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unsigned &FrameReg) const override;
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const SpillSlot *
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getCalleeSavedSpillSlots(unsigned &NumEntries) const override;
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void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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bool hasFP(const MachineFunction &MF) const override;
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};
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} // namespace llvm
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#endif
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