1*e8d8bef9SDimitry Andric //===-- PPCCallLowering.h - Call lowering for GlobalISel -------*- C++ -*-===// 2*e8d8bef9SDimitry Andric // 3*e8d8bef9SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*e8d8bef9SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*e8d8bef9SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*e8d8bef9SDimitry Andric // 7*e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 8*e8d8bef9SDimitry Andric /// 9*e8d8bef9SDimitry Andric /// \file 10*e8d8bef9SDimitry Andric /// This file implements the lowering of LLVM calls to machine code calls for 11*e8d8bef9SDimitry Andric /// GlobalISel. 12*e8d8bef9SDimitry Andric /// 13*e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 14*e8d8bef9SDimitry Andric 15*e8d8bef9SDimitry Andric #include "PPCCallLowering.h" 16*e8d8bef9SDimitry Andric #include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h" 17*e8d8bef9SDimitry Andric #include "llvm/Support/Debug.h" 18*e8d8bef9SDimitry Andric 19*e8d8bef9SDimitry Andric #define DEBUG_TYPE "ppc-call-lowering" 20*e8d8bef9SDimitry Andric 21*e8d8bef9SDimitry Andric using namespace llvm; 22*e8d8bef9SDimitry Andric 23*e8d8bef9SDimitry Andric PPCCallLowering::PPCCallLowering(const PPCTargetLowering &TLI) 24*e8d8bef9SDimitry Andric : CallLowering(&TLI) {} 25*e8d8bef9SDimitry Andric 26*e8d8bef9SDimitry Andric bool PPCCallLowering::lowerReturn(MachineIRBuilder &MIRBuilder, 27*e8d8bef9SDimitry Andric const Value *Val, ArrayRef<Register> VRegs, 28*e8d8bef9SDimitry Andric FunctionLoweringInfo &FLI, 29*e8d8bef9SDimitry Andric Register SwiftErrorVReg) const { 30*e8d8bef9SDimitry Andric assert(((Val && !VRegs.empty()) || (!Val && VRegs.empty())) && 31*e8d8bef9SDimitry Andric "Return value without a vreg"); 32*e8d8bef9SDimitry Andric if (VRegs.size() > 0) 33*e8d8bef9SDimitry Andric return false; 34*e8d8bef9SDimitry Andric 35*e8d8bef9SDimitry Andric MIRBuilder.buildInstr(PPC::BLR8); 36*e8d8bef9SDimitry Andric return true; 37*e8d8bef9SDimitry Andric } 38*e8d8bef9SDimitry Andric 39*e8d8bef9SDimitry Andric bool PPCCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder, 40*e8d8bef9SDimitry Andric const Function &F, 41*e8d8bef9SDimitry Andric ArrayRef<ArrayRef<Register>> VRegs, 42*e8d8bef9SDimitry Andric FunctionLoweringInfo &FLI) const { 43*e8d8bef9SDimitry Andric 44*e8d8bef9SDimitry Andric // If VRegs is empty, then there are no formal arguments to lower and thus can 45*e8d8bef9SDimitry Andric // always return true. If there are formal arguments, we currently do not 46*e8d8bef9SDimitry Andric // handle them and thus return false. 47*e8d8bef9SDimitry Andric return VRegs.empty(); 48*e8d8bef9SDimitry Andric } 49*e8d8bef9SDimitry Andric 50*e8d8bef9SDimitry Andric bool PPCCallLowering::lowerCall(MachineIRBuilder &MIRBuilder, 51*e8d8bef9SDimitry Andric CallLoweringInfo &Info) const { 52*e8d8bef9SDimitry Andric return false; 53*e8d8bef9SDimitry Andric } 54