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//===- MipsCallLowering.cpp -------------------------------------*- C++ -*-===//
//
// 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 "MipsCallLowering.h"
#include "MipsISelLowering.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
using namespace llvm;
MipsCallLowering::MipsCallLowering(const MipsTargetLowering &TLI)
: CallLowering(&TLI) {}
bool MipsCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder,
const Value *Val, unsigned VReg) const {
MachineInstrBuilder Ret = MIRBuilder.buildInstrNoInsert(Mips::RetRA);
if (Val != nullptr) {
return false;
}
MIRBuilder.insertInstr(Ret);
return true;
}
bool MipsCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
const Function &F,
ArrayRef<unsigned> VRegs) const {
// Quick exit if there aren't any args.
if (F.arg_empty())
return true;
// Function had args, but we didn't lower them.
return false;
}
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