llvm/lib/Target/WebAssembly/WebAssemblyRegisterInfo.h

   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   void 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