lib/Target/MSP430/MSP430TargetMachine.cpp

//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Top-level implementation for the MSP430 target.
//
//===----------------------------------------------------------------------===//

#include "MSP430.h"
#include "MSP430TargetAsmInfo.h"
#include "MSP430TargetMachine.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetMachineRegistry.h"

using namespace llvm;

/// MSP430TargetMachineModule - Note that this is used on hosts that
/// cannot link in a library unless there are references into the
/// library.  In particular, it seems that it is not possible to get
/// things to work on Win32 without this.  Though it is unused, do not
/// remove it.
extern "C" int MSP430TargetMachineModule;
int MSP430TargetMachineModule = 0;


// Register the targets
extern Target TheMSP430Target;
static RegisterTarget<MSP430TargetMachine>
X(TheMSP430Target, "msp430", "MSP430 [experimental]");

// Force static initialization.
extern "C" void LLVMInitializeMSP430Target() { 
  TargetRegistry::RegisterAsmPrinter(TheMSP430Target,
                                     &createMSP430CodePrinterPass);
}

MSP430TargetMachine::MSP430TargetMachine(const Target &T,
                                         const Module &M,
                                         const std::string &FS) :
  LLVMTargetMachine(T),
  Subtarget(*this, M, FS),
  // FIXME: Check TargetData string.
  DataLayout("e-p:16:8:8-i8:8:8-i16:8:8-i32:8:8"),
  InstrInfo(*this), TLInfo(*this),
  FrameInfo(TargetFrameInfo::StackGrowsDown, 2, -2) { }

const TargetAsmInfo *MSP430TargetMachine::createTargetAsmInfo() const {
  return new MSP430TargetAsmInfo(*this);
}

bool MSP430TargetMachine::addInstSelector(PassManagerBase &PM,
                                          CodeGenOpt::Level OptLevel) {
  // Install an instruction selector.
  PM.add(createMSP430ISelDag(*this, OptLevel));
  return false;
}

bool MSP430TargetMachine::addAssemblyEmitter(PassManagerBase &PM,
                                             CodeGenOpt::Level OptLevel,
                                             bool Verbose,
                                             formatted_raw_ostream &Out) {
  FunctionPass *Printer = getTarget().createAsmPrinter(Out, *this, Verbose);
  if (!Printer)
    llvm_report_error("unable to create assembly printer");
  PM.add(Printer);
  return false;
}