forked from OSchip/llvm-project
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===- MipsCallLowering.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// This file implements the lowering of LLVM calls to machine code calls for
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/// GlobalISel.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsCallLowering.h"
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#include "MipsISelLowering.h"
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#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
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using namespace llvm;
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MipsCallLowering::MipsCallLowering(const MipsTargetLowering &TLI)
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: CallLowering(&TLI) {}
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bool MipsCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder,
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const Value *Val, unsigned VReg) const {
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MachineInstrBuilder Ret = MIRBuilder.buildInstrNoInsert(Mips::RetRA);
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if (Val != nullptr) {
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return false;
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}
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MIRBuilder.insertInstr(Ret);
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return true;
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}
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bool MipsCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
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const Function &F,
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ArrayRef<unsigned> VRegs) const {
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// Quick exit if there aren't any args.
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if (F.arg_empty())
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return true;
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// Function had args, but we didn't lower them.
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return false;
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}
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