1//===- ARCAsmPrinter.cpp - ARC LLVM assembly writer -------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file contains a printer that converts from our internal representation 10// of machine-dependent LLVM code to GNU format ARC assembly language. 11// 12//===----------------------------------------------------------------------===// 13 14#include "ARC.h" 15#include "ARCMCInstLower.h" 16#include "ARCSubtarget.h" 17#include "ARCTargetMachine.h" 18#include "MCTargetDesc/ARCInstPrinter.h" 19#include "TargetInfo/ARCTargetInfo.h" 20#include "llvm/CodeGen/AsmPrinter.h" 21#include "llvm/CodeGen/MachineInstr.h" 22#include "llvm/MC/MCAsmInfo.h" 23#include "llvm/MC/MCInst.h" 24#include "llvm/MC/MCStreamer.h" 25#include "llvm/Support/TargetRegistry.h" 26#include "llvm/Support/raw_ostream.h" 27 28using namespace llvm; 29 30#define DEBUG_TYPE "asm-printer" 31 32namespace { 33 34class ARCAsmPrinter : public AsmPrinter { 35 ARCMCInstLower MCInstLowering; 36 37public: 38 explicit ARCAsmPrinter(TargetMachine &TM, 39 std::unique_ptr<MCStreamer> Streamer) 40 : AsmPrinter(TM, std::move(Streamer)), 41 MCInstLowering(&OutContext, *this) {} 42 43 StringRef getPassName() const override { return "ARC Assembly Printer"; } 44 void emitInstruction(const MachineInstr *MI) override; 45 46 bool runOnMachineFunction(MachineFunction &MF) override; 47}; 48 49} // end anonymous namespace 50 51void ARCAsmPrinter::emitInstruction(const MachineInstr *MI) { 52 SmallString<128> Str; 53 raw_svector_ostream O(Str); 54 55 switch (MI->getOpcode()) { 56 case ARC::DBG_VALUE: 57 llvm_unreachable("Should be handled target independently"); 58 break; 59 } 60 61 MCInst TmpInst; 62 MCInstLowering.Lower(MI, TmpInst); 63 EmitToStreamer(*OutStreamer, TmpInst); 64} 65 66bool ARCAsmPrinter::runOnMachineFunction(MachineFunction &MF) { 67 // Functions are 4-byte aligned. 68 MF.ensureAlignment(Align(4)); 69 return AsmPrinter::runOnMachineFunction(MF); 70} 71 72// Force static initialization. 73extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCAsmPrinter() { 74 RegisterAsmPrinter<ARCAsmPrinter> X(getTheARCTarget()); 75} 76