lib/Target/IA64/IA64TargetMachine.cpp

   1 //===-- IA64TargetMachine.cpp - Define TargetMachine for IA64 -------------===//
   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 implements the IA64 specific subclass of TargetMachine.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "IA64TargetAsmInfo.h"
  15 #include "IA64TargetMachine.h"
  16 #include "IA64.h"
  17 #include "llvm/Module.h"
  18 #include "llvm/PassManager.h"
  19 #include "llvm/Target/TargetMachineRegistry.h"
  20 using namespace llvm;
  21
  22 /// IA64TargetMachineModule - Note that this is used on hosts that cannot link
  23 /// in a library unless there are references into the library.  In particular,
  24 /// it seems that it is not possible to get things to work on Win32 without
  25 /// this.  Though it is unused, do not remove it.
  26 extern "C" int IA64TargetMachineModule;
  27 int IA64TargetMachineModule = 0;
  28
  29 static RegisterTarget<IA64TargetMachine> X("ia64",
  30                                            "IA-64 (Itanium) [experimental]");
  31
  32 const TargetAsmInfo *IA64TargetMachine::createTargetAsmInfo() const {
  33   return new IA64TargetAsmInfo(*this);
  34 }
  35
  36 unsigned IA64TargetMachine::getModuleMatchQuality(const Module &M) {
  37   // we match [iI][aA]*64
  38   bool seenIA64=false;
  39   std::string TT = M.getTargetTriple();
  40
  41   if (TT.size() >= 4) {
  42     if( (TT[0]=='i' || TT[0]=='I') &&
  43         (TT[1]=='a' || TT[1]=='A') ) {
  44       for(unsigned int i=2; i<(TT.size()-1); i++)
  45         if(TT[i]=='6' && TT[i+1]=='4')
  46           seenIA64=true;
  47     }
  48
  49     if (seenIA64)
  50       return 20; // strong match
  51   }
  52   // If the target triple is something non-ia64, we don't match.
  53   if (!TT.empty()) return 0;
  54
  55 #if defined(__ia64__) || defined(__IA64__)
  56   return 5;
  57 #else
  58   return 0;
  59 #endif
  60 }
  61
  62 /// IA64TargetMachine ctor - Create an LP64 architecture model
  63 ///
  64 IA64TargetMachine::IA64TargetMachine(const Module &M, const std::string &FS)
  65   : DataLayout("e-f80:128:128"),
  66     FrameInfo(TargetFrameInfo::StackGrowsDown, 16, 0),
  67     TLInfo(*this) { // FIXME? check this stuff
  68 }
  69
  70
  71 //===----------------------------------------------------------------------===//
  72 // Pass Pipeline Configuration
  73 //===----------------------------------------------------------------------===//
  74
  75 bool IA64TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
  76   PM.add(createIA64DAGToDAGInstructionSelector(*this));
  77   return false;
  78 }
  79
  80 bool IA64TargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
  81   // Make sure everything is bundled happily
  82   PM.add(createIA64BundlingPass(*this));
  83   return true;
  84 }
  85 bool IA64TargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
  86                                            raw_ostream &Out) {
  87   PM.add(createIA64CodePrinterPass(Out, *this, Fast));
  88   return false;
  89 }
  90