54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
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//===-- PPCCallLowering.h - 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 "PPCCallLowering.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 "ppc-call-lowering"
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using namespace llvm;
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PPCCallLowering::PPCCallLowering(const PPCTargetLowering &TLI)
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: CallLowering(&TLI) {}
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bool PPCCallLowering::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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assert(((Val && !VRegs.empty()) || (!Val && VRegs.empty())) &&
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"Return value without a vreg");
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if (VRegs.size() > 0)
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return false;
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MIRBuilder.buildInstr(PPC::BLR8);
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return true;
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}
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bool PPCCallLowering::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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// If VRegs is empty, then there are no formal arguments to lower and thus can
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// always return true. If there are formal arguments, we currently do not
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// handle them and thus return false.
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return VRegs.empty();
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}
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bool PPCCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
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CallLoweringInfo &Info) const {
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return false;
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}
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