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 "SPUMCAsmInfo.h"
  17 #include "SPUTargetMachine.h"
  18 #include "llvm/PassManager.h"
  19 #include "llvm/CodeGen/RegAllocRegistry.h"
  20 #include "llvm/CodeGen/SchedulerRegistry.h"
  21 #include "llvm/Target/TargetRegistry.h"
  22
  23 using namespace llvm;
  24
  25 extern "C" void LLVMInitializeCellSPUTarget() {
  26   // Register the target.
  27   RegisterTargetMachine<SPUTargetMachine> X(TheCellSPUTarget);
  28   RegisterAsmInfo<SPULinuxMCAsmInfo> Y(TheCellSPUTarget);
  29 }
  30
  31 const std::pair<unsigned, int> *
  32 SPUFrameLowering::getCalleeSaveSpillSlots(unsigned &NumEntries) const {
  33   NumEntries = 1;
  34   return &LR[0];
  35 }
  36
  37 SPUTargetMachine::SPUTargetMachine(const Target &T, const std::string &TT,
  38                                    const std::string &CPU,const std::string &FS)
  39   : LLVMTargetMachine(T, TT, CPU, FS),
  40     Subtarget(TT, CPU, FS),
  41     DataLayout(Subtarget.getTargetDataString()),
  42     InstrInfo(*this),
  43     FrameLowering(Subtarget),
  44     TLInfo(*this),
  45     TSInfo(*this),
  46     InstrItins(Subtarget.getInstrItineraryData()) {
  47   // For the time being, use static relocations, since there's really no
  48   // support for PIC yet.
  49   setRelocationModel(Reloc::Static);
  50 }
  51
  52 //===----------------------------------------------------------------------===//
  53 // Pass Pipeline Configuration
  54 //===----------------------------------------------------------------------===//
  55
  56 bool SPUTargetMachine::addInstSelector(PassManagerBase &PM,
  57                                        CodeGenOpt::Level OptLevel) {
  58   // Install an instruction selector.
  59   PM.add(createSPUISelDag(*this));
  60   return false;
  61 }
  62
  63 // passes to run just before printing the assembly
  64 bool SPUTargetMachine::
  65 addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel)
  66 {
  67   //align instructions with nops/lnops for dual issue
  68   PM.add(createSPUNopFillerPass(*this));
  69   return true;
  70 }