llvm-6502/lib/Target/Sparc/SparcTargetMachine.cpp

//===-- SparcV8TargetMachine.cpp - Define TargetMachine for SparcV8 -------===//
// 
//                     The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
// 
//===----------------------------------------------------------------------===//
// 
//
//===----------------------------------------------------------------------===//

#include "SparcV8TargetMachine.h"
#include "SparcV8.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetMachineImpls.h"
#include "llvm/Transforms/Scalar.h"
#include <iostream>
using namespace llvm;

// allocateSparcV8TargetMachine - Allocate and return a subclass of 
// TargetMachine that implements the SparcV8 backend.
//
TargetMachine *llvm::allocateSparcV8TargetMachine(const Module &M,
                                                  IntrinsicLowering *IL) {
  return new SparcV8TargetMachine(M, IL);
}

/// SparcV8TargetMachine ctor - Create an ILP32 architecture model
///
SparcV8TargetMachine::SparcV8TargetMachine(const Module &M,
                                           IntrinsicLowering *IL)
  : TargetMachine("SparcV8", IL, true, 4, 4, 4, 4, 4),
    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0), JITInfo(*this) {
}

/// addPassesToEmitAssembly - Add passes to the specified pass manager
/// to implement a static compiler for this target.
///
bool SparcV8TargetMachine::addPassesToEmitAssembly(PassManager &PM,
					       std::ostream &Out) {
  // FIXME: Implement efficient support for garbage collection intrinsics.
  PM.add(createLowerGCPass());

  // Replace malloc and free instructions with library calls.
  PM.add(createLowerAllocationsPass());

  // FIXME: implement the select instruction in the instruction selector.
  PM.add(createLowerSelectPass());
  
  // FIXME: implement the switch instruction in the instruction selector.
  PM.add(createLowerSwitchPass());

  // FIXME: implement the invoke/unwind instructions!
  PM.add(createLowerInvokePass());

  PM.add(createLowerConstantExpressionsPass());

  // Make sure that no unreachable blocks are instruction selected.
  PM.add(createUnreachableBlockEliminationPass());

  PM.add(createSparcV8SimpleInstructionSelector(*this));

  // Print machine instructions as they were initially generated.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));

  PM.add(createRegisterAllocator());
  PM.add(createPrologEpilogCodeInserter());

  // Print machine instructions after register allocation and prolog/epilog
  // insertion.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));

  PM.add(createSparcV8DelaySlotFillerPass(*this));

  // Print machine instructions after filling delay slots.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));

  // Output assembly language.
  PM.add(createSparcV8CodePrinterPass(Out, *this));

  // Delete the MachineInstrs we generated, since they're no longer needed.
  PM.add(createMachineCodeDeleter());
  return false;
}

/// addPassesToJITCompile - Add passes to the specified pass manager to
/// implement a fast dynamic compiler for this target.
///
void SparcV8JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
  // FIXME: Implement efficient support for garbage collection intrinsics.
  PM.add(createLowerGCPass());

  // Replace malloc and free instructions with library calls.
  PM.add(createLowerAllocationsPass());
  
  // FIXME: implement the select instruction in the instruction selector.
  PM.add(createLowerSelectPass());
  
  // FIXME: implement the switch instruction in the instruction selector.
  PM.add(createLowerSwitchPass());

  // FIXME: implement the invoke/unwind instructions!
  PM.add(createLowerInvokePass());

  PM.add(createLowerConstantExpressionsPass());
  
  // Make sure that no unreachable blocks are instruction selected.
  PM.add(createUnreachableBlockEliminationPass());

  PM.add(createSparcV8SimpleInstructionSelector(TM));

  // Print machine instructions as they were initially generated.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));

  PM.add(createRegisterAllocator());
  PM.add(createPrologEpilogCodeInserter());

  // Print machine instructions after register allocation and prolog/epilog
  // insertion.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));

  PM.add(createSparcV8DelaySlotFillerPass(TM));

  // Print machine instructions after filling delay slots.
  if (PrintMachineCode)
    PM.add(createMachineFunctionPrinterPass(&std::cerr));
}