| 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/MC/TargetRegistry.h" |
| 26 | #include "llvm/Support/raw_ostream.h" |
| 27 | |
| 28 | using namespace llvm; |
| 29 | |
| 30 | #define DEBUG_TYPE "asm-printer" |
| 31 | |
| 32 | namespace { |
| 33 | |
| 34 | class ARCAsmPrinter : public AsmPrinter { |
| 35 | ARCMCInstLower MCInstLowering; |
| 36 | |
| 37 | public: |
| 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 | |
| 51 | void ARCAsmPrinter::emitInstruction(const MachineInstr *MI) { |
| 52 | ARC_MC::verifyInstructionPredicates(MI->getOpcode(), |
| 53 | getSubtargetInfo().getFeatureBits()); |
| 54 | |
| 55 | SmallString<128> Str; |
| 56 | raw_svector_ostream O(Str); |
| 57 | |
| 58 | switch (MI->getOpcode()) { |
| 59 | case ARC::DBG_VALUE: |
| 60 | llvm_unreachable("Should be handled target independently"); |
| 61 | break; |
| 62 | } |
| 63 | |
| 64 | MCInst TmpInst; |
| 65 | MCInstLowering.Lower(MI, OutMI&: TmpInst); |
| 66 | EmitToStreamer(S&: *OutStreamer, Inst: TmpInst); |
| 67 | } |
| 68 | |
| 69 | bool ARCAsmPrinter::runOnMachineFunction(MachineFunction &MF) { |
| 70 | // Functions are 4-byte aligned. |
| 71 | MF.ensureAlignment(A: Align(4)); |
| 72 | return AsmPrinter::runOnMachineFunction(MF); |
| 73 | } |
| 74 | |
| 75 | // Force static initialization. |
| 76 | extern "C"LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCAsmPrinter() { |
| 77 | RegisterAsmPrinter<ARCAsmPrinter> X(getTheARCTarget()); |
| 78 | } |
| 79 |