lib/Target/PIC16/PIC16TargetMachine.cpp

   1 //===-- PIC16TargetMachine.cpp - Define TargetMachine for PIC16 -----------===//
   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 PIC16 target.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PIC16.h"
  15 #include "PIC16MCAsmInfo.h"
  16 #include "PIC16TargetMachine.h"
  17 #include "llvm/PassManager.h"
  18 #include "llvm/CodeGen/Passes.h"
  19 #include "llvm/Target/TargetRegistry.h"
  20
  21 using namespace llvm;
  22
  23 extern "C" void LLVMInitializePIC16Target() {
  24   // Register the target. Curretnly the codegen works for
  25   // enhanced pic16 mid-range.
  26   RegisterTargetMachine<PIC16TargetMachine> X(ThePIC16Target);
  27   RegisterAsmInfo<PIC16MCAsmInfo> A(ThePIC16Target);
  28 }
  29
  30
  31 // PIC16TargetMachine - Enhanced PIC16 mid-range Machine. May also represent
  32 // a Traditional Machine if 'Trad' is true.
  33 PIC16TargetMachine::PIC16TargetMachine(const Target &T, const std::string &TT,
  34                                        const std::string &FS, bool Trad)
  35 : LLVMTargetMachine(T, TT),
  36   Subtarget(TT, FS, Trad),
  37   DataLayout("e-p:16:8:8-i8:8:8-i16:8:8-i32:8:8"),
  38   InstrInfo(*this), TLInfo(*this),
  39   FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0) { }
  40
  41
  42 bool PIC16TargetMachine::addInstSelector(PassManagerBase &PM,
  43                                          CodeGenOpt::Level OptLevel) {
  44   // Install an instruction selector.
  45   PM.add(createPIC16ISelDag(*this));
  46   return false;
  47 }
  48
  49 bool PIC16TargetMachine::addPreEmitPass(PassManagerBase &PM,
  50                                          CodeGenOpt::Level OptLevel) {
  51   PM.add(createPIC16MemSelOptimizerPass());
  52   return true;  // -print-machineinstr should print after this.
  53 }
  54
  55