lib/Target/AMDGPU/AMDGPUCallLowering.h

   1 //===- lib/Target/AMDGPU/AMDGPUCallLowering.h - Call lowering -*- C++ -*---===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 ///
  10 /// \file
  11 /// This file describes how to lower LLVM calls to machine code calls.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
  16 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
  17
  18 #include "AMDGPU.h"
  19 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
  20
  21 namespace llvm {
  22
  23 class AMDGPUTargetLowering;
  24
  25 class AMDGPUCallLowering: public CallLowering {
  26   unsigned lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy,
  27                              uint64_t Offset) const;
  28
  29   void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy,
  30                       uint64_t Offset, unsigned Align,
  31                       unsigned DstReg) const;
  32
  33  public:
  34   AMDGPUCallLowering(const AMDGPUTargetLowering &TLI);
  35
  36   bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
  37                    ArrayRef<unsigned> VRegs) const override;
  38   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
  39                             ArrayRef<unsigned> VRegs) const override;
  40   static CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg);
  41   static CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg);
  42 };
  43 } // End of namespace llvm;
  44 #endif