46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
//===-- BPFCallLowering.cpp - Call lowering for GlobalISel ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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 "BPFCallLowering.h"
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#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
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#include "llvm/Support/Debug.h"
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#define DEBUG_TYPE "bpf-call-lowering"
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using namespace llvm;
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BPFCallLowering::BPFCallLowering(const BPFTargetLowering &TLI)
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: CallLowering(&TLI) {}
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bool BPFCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder,
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const Value *Val, ArrayRef<Register> VRegs,
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FunctionLoweringInfo &FLI,
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Register SwiftErrorVReg) const {
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if (!VRegs.empty())
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return false;
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MIRBuilder.buildInstr(BPF::RET);
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return true;
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}
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bool BPFCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
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const Function &F,
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ArrayRef<ArrayRef<Register>> VRegs,
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FunctionLoweringInfo &FLI) const {
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return VRegs.empty();
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}
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bool BPFCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
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CallLoweringInfo &Info) const {
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return false;
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}
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