lib/Target/Sparc/SparcTargetMachine.cpp

   1 //===-- SparcTargetMachine.cpp - Define TargetMachine for Sparc -----------===//
   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 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "SparcTargetAsmInfo.h"
  14 #include "SparcTargetMachine.h"
  15 #include "Sparc.h"
  16 #include "llvm/Module.h"
  17 #include "llvm/PassManager.h"
  18 #include "llvm/Target/TargetMachineRegistry.h"
  19 using namespace llvm;
  20
  21 /// SparcTargetMachineModule - Note that this is used on hosts that
  22 /// cannot link in a library unless there are references into the
  23 /// library.  In particular, it seems that it is not possible to get
  24 /// things to work on Win32 without this.  Though it is unused, do not
  25 /// remove it.
  26 extern "C" int SparcTargetMachineModule;
  27 int SparcTargetMachineModule = 0;
  28
  29 // Register the target.
  30 static RegisterTarget<SparcTargetMachine> X("sparc", "SPARC");
  31
  32 const TargetAsmInfo *SparcTargetMachine::createTargetAsmInfo() const {
  33   // FIXME: Handle Solaris subtarget someday :)
  34   return new SparcELFTargetAsmInfo(*this);
  35 }
  36
  37 /// SparcTargetMachine ctor - Create an ILP32 architecture model
  38 ///
  39 SparcTargetMachine::SparcTargetMachine(const Module &M, const std::string &FS)
  40   : DataLayout("E-p:32:32-f128:128:128"),
  41     Subtarget(M, FS), TLInfo(*this), InstrInfo(Subtarget),
  42     FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0) {
  43 }
  44
  45 unsigned SparcTargetMachine::getModuleMatchQuality(const Module &M) {
  46   std::string TT = M.getTargetTriple();
  47   if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "sparc-")
  48     return 20;
  49
  50   // If the target triple is something non-sparc, we don't match.
  51   if (!TT.empty()) return 0;
  52
  53   if (M.getEndianness()  == Module::BigEndian &&
  54       M.getPointerSize() == Module::Pointer32)
  55 #ifdef __sparc__
  56     return 20;   // BE/32 ==> Prefer sparc on sparc
  57 #else
  58     return 5;    // BE/32 ==> Prefer ppc elsewhere
  59 #endif
  60   else if (M.getEndianness() != Module::AnyEndianness ||
  61            M.getPointerSize() != Module::AnyPointerSize)
  62     return 0;                                    // Match for some other target
  63
  64 #if defined(__sparc__)
  65   return 10;
  66 #else
  67   return 0;
  68 #endif
  69 }
  70
  71 bool SparcTargetMachine::addInstSelector(PassManagerBase &PM,
  72                                          CodeGenOpt::Level OptLevel) {
  73   PM.add(createSparcISelDag(*this));
  74   return false;
  75 }
  76
  77 /// addPreEmitPass - This pass may be implemented by targets that want to run
  78 /// passes immediately before machine code is emitted.  This should return
  79 /// true if -print-machineinstrs should print out the code after the passes.
  80 bool SparcTargetMachine::addPreEmitPass(PassManagerBase &PM,
  81                                         CodeGenOpt::Level OptLevel){
  82   PM.add(createSparcFPMoverPass(*this));
  83   PM.add(createSparcDelaySlotFillerPass(*this));
  84   return true;
  85 }
  86
  87 bool SparcTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
  88                                             CodeGenOpt::Level OptLevel,
  89                                             bool Verbose,
  90                                             raw_ostream &Out) {
  91   // Output assembly language.
  92   PM.add(createSparcCodePrinterPass(Out, *this, OptLevel, Verbose));
  93   return false;
  94 }