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