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e04339a4ce
This WebAssembly backend is just a skeleton at this time and is not yet functional. llvm-svn: 241022
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
// WebAssemblyFrameLowering.h - TargetFrameLowering for WebAssembly -*- 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 This class implements WebAssembly-specific bits of
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/// TargetFrameLowering class.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYFRAMELOWERING_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYFRAMELOWERING_H
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#include "llvm/Target/TargetFrameLowering.h"
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namespace llvm {
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class WebAssemblyFrameLowering final : public TargetFrameLowering {
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public:
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WebAssemblyFrameLowering()
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: TargetFrameLowering(StackGrowsDown, /*StackAlignment=*/16,
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/*LocalAreaOffset=*/0,
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/*TransientStackAlignment=*/16,
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/*StackRealignable=*/true) {}
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void
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eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const override;
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/// These methods insert prolog and epilog code into the function.
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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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bool hasReservedCallFrame(const MachineFunction &MF) const override;
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void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
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RegScavenger *RS) const override;
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};
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} // end namespace llvm
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#endif
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