ad4a582fd9
Some targets (e.g. PPC and Hexagon) already did this. I think it's best to do this consistently so that frontend authors don't run into inconsistent results when they emit `naked` functions. For example, in Zig, we had to change our emit code to also set `frame-pointer=none` to get reliable results across targets. Note: I don't have commit access.
37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
//===-- DirectXFrameLowering.h - Frame lowering for DirectX --*- C++ ---*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This class implements DirectX-specific bits of TargetFrameLowering class.
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// This is just a stub because the current DXIL backend does not actually lower
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// through the MC layer.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
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#define LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
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#include "llvm/CodeGen/TargetFrameLowering.h"
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#include "llvm/Support/Alignment.h"
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namespace llvm {
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class DirectXSubtarget;
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class DirectXFrameLowering : public TargetFrameLowering {
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public:
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explicit DirectXFrameLowering(const DirectXSubtarget &STI)
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: TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(8), 0) {}
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void emitPrologue(MachineFunction &, MachineBasicBlock &) const override {}
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void emitEpilogue(MachineFunction &, MachineBasicBlock &) const override {}
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protected:
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bool hasFPImpl(const MachineFunction &) const override { return false; }
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};
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} // namespace llvm
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#endif // LLVM_DIRECTX_DIRECTXFRAMELOWERING_H
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