lib/Target/X86/AsmPrinter/X86AsmPrinter.cpp

   1 //===-- X86AsmPrinter.cpp - Convert X86 LLVM IR to X86 assembly -----------===//
   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 the shared super class printer that converts from our internal
  11 // representation of machine-dependent LLVM code to Intel and AT&T format
  12 // assembly language.
  13 // This printer is the output mechanism used by `llc'.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #include "X86.h"
  18 #include "X86ATTAsmPrinter.h"
  19 #include "X86IntelAsmPrinter.h"
  20 #include "X86ATTInstPrinter.h"
  21 #include "llvm/MC/MCAsmInfo.h"
  22 #include "llvm/Target/TargetRegistry.h"
  23 using namespace llvm;
  24
  25 /// createX86CodePrinterPass - Returns a pass that prints the X86 assembly code
  26 /// for a MachineFunction to the given output stream, using the given target
  27 /// machine description.
  28 ///
  29 static AsmPrinter *createX86CodePrinterPass(formatted_raw_ostream &o,
  30                                             TargetMachine &tm,
  31                                             const MCAsmInfo *tai,
  32                                             bool verbose) {
  33   if (tm.getMCAsmInfo()->getAssemblerDialect() == 1)
  34     return new X86IntelAsmPrinter(o, tm, tai, verbose);
  35   return new X86ATTAsmPrinter(o, tm, tai, verbose);
  36 }
  37
  38
  39 static MCInstPrinter *createX86MCInstPrinter(const Target &T,
  40                                              unsigned SyntaxVariant,
  41                                              const MCAsmInfo &MAI,
  42                                              raw_ostream &O) {
  43   if (SyntaxVariant == 0)
  44     return new X86ATTInstPrinter(O, MAI);
  45
  46   // Don't support intel syntax instprinter yet.
  47   return 0;
  48 }
  49
  50 // Force static initialization.
  51 extern "C" void LLVMInitializeX86AsmPrinter() {
  52   TargetRegistry::RegisterAsmPrinter(TheX86_32Target, createX86CodePrinterPass);
  53   TargetRegistry::RegisterAsmPrinter(TheX86_64Target, createX86CodePrinterPass);
  54
  55   TargetRegistry::RegisterMCInstPrinter(TheX86_32Target,createX86MCInstPrinter);
  56   TargetRegistry::RegisterMCInstPrinter(TheX86_64Target,createX86MCInstPrinter);
  57 }