contrib/llvm/lib/Target/ARC/ARCAsmPrinter.cpp

   1 //===- ARCAsmPrinter.cpp - ARC LLVM assembly writer -------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains a printer that converts from our internal representation
  11 // of machine-dependent LLVM code to GNU format ARC assembly language.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "ARC.h"
  16 #include "ARCInstrInfo.h"
  17 #include "ARCMCInstLower.h"
  18 #include "ARCSubtarget.h"
  19 #include "ARCTargetMachine.h"
  20 #include "ARCTargetStreamer.h"
  21 #include "InstPrinter/ARCInstPrinter.h"
  22 #include "llvm/ADT/SmallString.h"
  23 #include "llvm/ADT/StringExtras.h"
  24 #include "llvm/CodeGen/AsmPrinter.h"
  25 #include "llvm/CodeGen/MachineFunctionPass.h"
  26 #include "llvm/CodeGen/MachineInstr.h"
  27 #include "llvm/CodeGen/MachineModuleInfo.h"
  28 #include "llvm/MC/MCAsmInfo.h"
  29 #include "llvm/MC/MCExpr.h"
  30 #include "llvm/MC/MCInst.h"
  31 #include "llvm/MC/MCStreamer.h"
  32 #include "llvm/MC/MCSymbolELF.h"
  33 #include "llvm/Support/ErrorHandling.h"
  34 #include "llvm/Support/TargetRegistry.h"
  35 #include "llvm/Support/raw_ostream.h"
  36 #include "llvm/Target/TargetLoweringObjectFile.h"
  37 #include <algorithm>
  38
  39 using namespace llvm;
  40
  41 #define DEBUG_TYPE "asm-printer"
  42
  43 namespace {
  44
  45 class ARCAsmPrinter : public AsmPrinter {
  46   ARCMCInstLower MCInstLowering;
  47   ARCTargetStreamer &getTargetStreamer();
  48
  49 public:
  50   explicit ARCAsmPrinter(TargetMachine &TM,
  51                          std::unique_ptr<MCStreamer> Streamer)
  52       : AsmPrinter(TM, std::move(Streamer)),
  53         MCInstLowering(&OutContext, *this) {}
  54
  55   StringRef getPassName() const override { return "ARC Assembly Printer"; }
  56   void EmitInstruction(const MachineInstr *MI) override;
  57 };
  58
  59 } // end anonymous namespace
  60
  61 ARCTargetStreamer &ARCAsmPrinter::getTargetStreamer() {
  62   return static_cast<ARCTargetStreamer &>(*OutStreamer->getTargetStreamer());
  63 }
  64
  65 void ARCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
  66   SmallString<128> Str;
  67   raw_svector_ostream O(Str);
  68
  69   switch (MI->getOpcode()) {
  70   case ARC::DBG_VALUE:
  71     llvm_unreachable("Should be handled target independently");
  72     break;
  73   }
  74
  75   MCInst TmpInst;
  76   MCInstLowering.Lower(MI, TmpInst);
  77   EmitToStreamer(*OutStreamer, TmpInst);
  78 }
  79
  80 // Force static initialization.
  81 extern "C" void LLVMInitializeARCAsmPrinter() {
  82   RegisterAsmPrinter<ARCAsmPrinter> X(getTheARCTarget());
  83 }