llvm/lib/Target/SPIRV/SPIRVRegisterInfo.cpp

   1 //===-- SPIRVRegisterInfo.cpp - SPIR-V Register Information -----*- 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 // This file contains the SPIR-V implementation of the TargetRegisterInfo class.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "SPIRVRegisterInfo.h"
  14 #include "SPIRV.h"
  15 #include "SPIRVSubtarget.h"
  16 #include "llvm/CodeGen/MachineFunction.h"
  17
  18 #define GET_REGINFO_TARGET_DESC
  19 #include "SPIRVGenRegisterInfo.inc"
  20 using namespace llvm;
  21
  22 SPIRVRegisterInfo::SPIRVRegisterInfo() : SPIRVGenRegisterInfo(SPIRV::ID0) {}
  23
  24 BitVector SPIRVRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
  25   return BitVector(getNumRegs());
  26 }
  27
  28 const MCPhysReg *
  29 SPIRVRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
  30   static const MCPhysReg CalleeSavedReg = {0};
  31   return &CalleeSavedReg;
  32 }