lib/Target/PIC16/PIC16ISelDAGToDAG.h

   1 //===-- PIC16ISelDAGToDAG.cpp - A dag to dag inst selector 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 // This file defines an instruction selector for the PIC16 target.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #define DEBUG_TYPE "pic16-isel"
  15
  16 #include "PIC16.h"
  17 #include "PIC16ISelLowering.h"
  18 #include "PIC16RegisterInfo.h"
  19 #include "PIC16TargetMachine.h"
  20 #include "llvm/CodeGen/SelectionDAGISel.h"
  21 #include "llvm/Support/Compiler.h"
  22 #include "llvm/Support/raw_ostream.h"
  23 #include "llvm/Support/Debug.h"
  24 #include "llvm/Intrinsics.h"
  25 using namespace llvm;
  26
  27 namespace {
  28
  29 class VISIBILITY_HIDDEN PIC16DAGToDAGISel : public SelectionDAGISel {
  30
  31   /// TM - Keep a reference to PIC16TargetMachine.
  32   PIC16TargetMachine &TM;
  33
  34   /// PIC16Lowering - This object fully describes how to lower LLVM code to an
  35   /// PIC16-specific SelectionDAG.
  36   PIC16TargetLowering &PIC16Lowering;
  37
  38 public:
  39   explicit PIC16DAGToDAGISel(PIC16TargetMachine &tm) :
  40         SelectionDAGISel(tm),
  41         TM(tm), PIC16Lowering(*TM.getTargetLowering()) {
  42     // Keep PIC16 specific DAGISel to use during the lowering
  43     PIC16Lowering.ISel = this;
  44   }
  45
  46   // Pass Name
  47   virtual const char *getPassName() const {
  48     return "PIC16 DAG->DAG Pattern Instruction Selection";
  49   }
  50
  51 private:
  52   // Include the pieces autogenerated from the target description.
  53 #include "PIC16GenDAGISel.inc"
  54
  55   SDNode *Select(SDNode *N);
  56
  57   // Match direct address complex pattern.
  58   bool SelectDirectAddr(SDNode *Op, SDValue N, SDValue &Address);
  59
  60 };
  61
  62 }
  63