lib/Target/AMDGPU/AMDGPUCallLowering.h

   1 //===- lib/Target/AMDGPU/AMDGPUCallLowering.h - Call lowering -*- 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 describes how to lower LLVM calls to machine code calls.
  11 ///
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
  15 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
  16
  17 #include "AMDGPU.h"
  18 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
  19
  20 namespace llvm {
  21
  22 class AMDGPUTargetLowering;
  23
  24 class AMDGPUCallLowering: public CallLowering {
  25   Register lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy,
  26                              uint64_t Offset) const;
  27
  28   void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy,
  29                       uint64_t Offset, unsigned Align,
  30                       Register DstReg) const;
  31
  32  public:
  33   AMDGPUCallLowering(const AMDGPUTargetLowering &TLI);
  34
  35   bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
  36                    ArrayRef<Register> VRegs) const override;
  37   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
  38                             ArrayRef<Register> VRegs) const override;
  39   static CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg);
  40   static CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg);
  41 };
  42 } // End of namespace llvm;
  43 #endif