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