lib/Target/CellSPU/SPUTargetMachine.cpp

   1 //===-- SPUTargetMachine.cpp - Define TargetMachine for Cell SPU ----------===//
   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 // Top-level implementation for the Cell SPU target.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "SPU.h"
  15 #include "SPURegisterNames.h"
  16 #include "SPUTargetAsmInfo.h"
  17 #include "SPUTargetMachine.h"
  18 #include "llvm/Module.h"
  19 #include "llvm/PassManager.h"
  20 #include "llvm/Target/TargetMachineRegistry.h"
  21 #include "llvm/CodeGen/RegAllocRegistry.h"
  22 #include "llvm/CodeGen/SchedulerRegistry.h"
  23
  24 using namespace llvm;
  25
  26 /// CellSPUTargetMachineModule - Note that this is used on hosts that
  27 /// cannot link in a library unless there are references into the
  28 /// library.  In particular, it seems that it is not possible to get
  29 /// things to work on Win32 without this.  Though it is unused, do not
  30 /// remove it.
  31 extern "C" int CellSPUTargetMachineModule;
  32 int CellSPUTargetMachineModule = 0;
  33
  34 namespace {
  35   // Register the targets
  36   RegisterTarget<SPUTargetMachine>
  37   CELLSPU("cellspu", "STI CBEA Cell SPU [experimental]");
  38 }
  39
  40 const std::pair<unsigned, int> *
  41 SPUFrameInfo::getCalleeSaveSpillSlots(unsigned &NumEntries) const {
  42   NumEntries = 1;
  43   return &LR[0];
  44 }
  45
  46 const TargetAsmInfo *
  47 SPUTargetMachine::createTargetAsmInfo() const
  48 {
  49   return new SPULinuxTargetAsmInfo(*this);
  50 }
  51
  52 unsigned
  53 SPUTargetMachine::getModuleMatchQuality(const Module &M)
  54 {
  55   // We strongly match "spu-*" or "cellspu-*".
  56   std::string TT = M.getTargetTriple();
  57   if ((TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "spu")
  58       || (TT.size() == 7 && std::string(TT.begin(), TT.begin()+7) == "cellspu")
  59       || (TT.size() >= 4 && std::string(TT.begin(), TT.begin()+4) == "spu-")
  60       || (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "cellspu-"))
  61     return 20;
  62
  63   return 0;                     // No match at all...
  64 }
  65
  66 SPUTargetMachine::SPUTargetMachine(const Module &M, const std::string &FS)
  67   : Subtarget(*this, M, FS),
  68     DataLayout(Subtarget.getTargetDataString()),
  69     InstrInfo(*this),
  70     FrameInfo(*this),
  71     TLInfo(*this),
  72     InstrItins(Subtarget.getInstrItineraryData())
  73 {
  74   // For the time being, use static relocations, since there's really no
  75   // support for PIC yet.
  76   setRelocationModel(Reloc::Static);
  77 }
  78
  79 //===----------------------------------------------------------------------===//
  80 // Pass Pipeline Configuration
  81 //===----------------------------------------------------------------------===//
  82
  83 bool
  84 SPUTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast)
  85 {
  86   // Install an instruction selector.
  87   PM.add(createSPUISelDag(*this));
  88   return false;
  89 }
  90
  91 bool SPUTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
  92                                           bool Verbose, raw_ostream &Out) {
  93   PM.add(createSPUAsmPrinterPass(Out, *this, Fast, Verbose));
  94   return false;
  95 }