1// WebAssemblyRegisterInfo.h - WebAssembly Register Information Impl -*- C++ -*-
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// This file contains the WebAssembly implementation of the
11/// WebAssemblyRegisterInfo class.
12///
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYREGISTERINFO_H
16#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYREGISTERINFO_H
17
18#define GET_REGINFO_HEADER
19#include "WebAssemblyGenRegisterInfo.inc"
20
21namespace llvm {
22
23class MachineFunction;
24class RegScavenger;
25class TargetRegisterClass;
26class Triple;
27
28class WebAssemblyRegisterInfo final : public WebAssemblyGenRegisterInfo {
29 const Triple &TT;
30
31public:
32 explicit WebAssemblyRegisterInfo(const Triple &TT);
33
34 // Code Generation virtual methods.
35 const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
36 BitVector getReservedRegs(const MachineFunction &MF) const override;
37 bool eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
38 unsigned FIOperandNum,
39 RegScavenger *RS = nullptr) const override;
40
41 // Debug information queries.
42 Register getFrameRegister(const MachineFunction &MF) const override;
43
44 const TargetRegisterClass *
45 getPointerRegClass(const MachineFunction &MF,
46 unsigned Kind = 0) const override;
47 // This does not apply to wasm.
48 const uint32_t *getNoPreservedMask() const override { return nullptr; }
49};
50
51} // end namespace llvm
52
53#endif
54