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 
21 namespace llvm {
22 
23 class MachineFunction;
24 class RegScavenger;
25 class TargetRegisterClass;
26 class Triple;
27 
28 class WebAssemblyRegisterInfo final : public WebAssemblyGenRegisterInfo {
29   const Triple &TT;
30 
31 public:
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.
getNoPreservedMask()48   const uint32_t *getNoPreservedMask() const override { return nullptr; }
49 };
50 
51 } // end namespace llvm
52 
53 #endif
54