1 // WebAssemblyFrameLowering.h - TargetFrameLowering for WebAssembly -*- C++ -*-/
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief This class implements WebAssembly-specific bits of
12 /// TargetFrameLowering class.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYFRAMELOWERING_H
17 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYFRAMELOWERING_H
19 #include "llvm/Target/TargetFrameLowering.h"
23 class WebAssemblyFrameLowering final : public TargetFrameLowering {
25 WebAssemblyFrameLowering()
26 : TargetFrameLowering(StackGrowsDown, /*StackAlignment=*/16,
27 /*LocalAreaOffset=*/0,
28 /*TransientStackAlignment=*/16,
29 /*StackRealignable=*/true) {}
32 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
33 MachineBasicBlock::iterator I) const override;
35 /// These methods insert prolog and epilog code into the function.
36 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
37 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
39 bool hasFP(const MachineFunction &MF) const override;
40 bool hasReservedCallFrame(const MachineFunction &MF) const override;
43 } // end namespace llvm