xref: /llvm-project-15.0.7/llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp (revision 862758ec)

//===-- llvm/lib/Target/AMDGPU/AMDGPUCallLowering.cpp - Call lowering ---===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements the lowering of LLVM calls to machine code calls for
/// GlobalISel.
///
//===----------------------------------------------------------------------===//

#include "AMDGPUCallLowering.h"
#include "AMDGPUISelLowering.h"

#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"

using namespace llvm;

#ifndef LLVM_BUILD_GLOBAL_ISEL
#error "This shouldn't be built without GISel"
#endif

AMDGPUCallLowering::AMDGPUCallLowering(const AMDGPUTargetLowering &TLI)
  : CallLowering(&TLI) {
}

bool AMDGPUCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder,
                                        const Value *Val, unsigned VReg) const {
  return true;
}

bool AMDGPUCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
                                              const Function &F,
                                              ArrayRef<unsigned> VRegs) const {
  // TODO: Implement once there are generic loads/stores.
  return true;
}