1*81ad6265SDimitry Andric //=- SPIRVMCInstLower.cpp - Convert SPIR-V MachineInstr to MCInst -*- C++ -*-=// 2*81ad6265SDimitry Andric // 3*81ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*81ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*81ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*81ad6265SDimitry Andric // 7*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 8*81ad6265SDimitry Andric // 9*81ad6265SDimitry Andric // This file contains code to lower SPIR-V MachineInstrs to their corresponding 10*81ad6265SDimitry Andric // MCInst records. 11*81ad6265SDimitry Andric // 12*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 13*81ad6265SDimitry Andric 14*81ad6265SDimitry Andric #include "SPIRVMCInstLower.h" 15*81ad6265SDimitry Andric #include "SPIRV.h" 16*81ad6265SDimitry Andric #include "SPIRVModuleAnalysis.h" 17*81ad6265SDimitry Andric #include "SPIRVUtils.h" 18*81ad6265SDimitry Andric #include "llvm/CodeGen/MachineInstr.h" 19*81ad6265SDimitry Andric #include "llvm/IR/Constants.h" 20*81ad6265SDimitry Andric 21*81ad6265SDimitry Andric using namespace llvm; 22*81ad6265SDimitry Andric 23*81ad6265SDimitry Andric void SPIRVMCInstLower::lower(const MachineInstr *MI, MCInst &OutMI, 24*81ad6265SDimitry Andric SPIRV::ModuleAnalysisInfo *MAI) const { 25*81ad6265SDimitry Andric OutMI.setOpcode(MI->getOpcode()); 26*81ad6265SDimitry Andric const MachineFunction *MF = MI->getMF(); 27*81ad6265SDimitry Andric for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 28*81ad6265SDimitry Andric const MachineOperand &MO = MI->getOperand(i); 29*81ad6265SDimitry Andric MCOperand MCOp; 30*81ad6265SDimitry Andric switch (MO.getType()) { 31*81ad6265SDimitry Andric default: 32*81ad6265SDimitry Andric llvm_unreachable("unknown operand type"); 33*81ad6265SDimitry Andric case MachineOperand::MO_GlobalAddress: { 34*81ad6265SDimitry Andric Register FuncReg = MAI->getFuncReg(MO.getGlobal()->getGlobalIdentifier()); 35*81ad6265SDimitry Andric assert(FuncReg.isValid() && "Cannot find function Id"); 36*81ad6265SDimitry Andric MCOp = MCOperand::createReg(FuncReg); 37*81ad6265SDimitry Andric break; 38*81ad6265SDimitry Andric } 39*81ad6265SDimitry Andric case MachineOperand::MO_MachineBasicBlock: 40*81ad6265SDimitry Andric MCOp = MCOperand::createReg(MAI->getOrCreateMBBRegister(*MO.getMBB())); 41*81ad6265SDimitry Andric break; 42*81ad6265SDimitry Andric case MachineOperand::MO_Register: { 43*81ad6265SDimitry Andric Register NewReg = MAI->getRegisterAlias(MF, MO.getReg()); 44*81ad6265SDimitry Andric MCOp = MCOperand::createReg(NewReg.isValid() ? NewReg : MO.getReg()); 45*81ad6265SDimitry Andric break; 46*81ad6265SDimitry Andric } 47*81ad6265SDimitry Andric case MachineOperand::MO_Immediate: 48*81ad6265SDimitry Andric MCOp = MCOperand::createImm(MO.getImm()); 49*81ad6265SDimitry Andric break; 50*81ad6265SDimitry Andric case MachineOperand::MO_FPImmediate: 51*81ad6265SDimitry Andric MCOp = MCOperand::createDFPImm( 52*81ad6265SDimitry Andric MO.getFPImm()->getValueAPF().convertToFloat()); 53*81ad6265SDimitry Andric break; 54*81ad6265SDimitry Andric } 55*81ad6265SDimitry Andric 56*81ad6265SDimitry Andric OutMI.addOperand(MCOp); 57*81ad6265SDimitry Andric } 58*81ad6265SDimitry Andric } 59