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/Intrinsics.h"
  23 using namespace llvm;
  24
  25 namespace {
  26
  27 class VISIBILITY_HIDDEN PIC16DAGToDAGISel : public SelectionDAGISel {
  28
  29   /// TM - Keep a reference to PIC16TargetMachine.
  30   PIC16TargetMachine &TM;
  31
  32   /// PIC16Lowering - This object fully describes how to lower LLVM code to an
  33   /// PIC16-specific SelectionDAG.
  34   PIC16TargetLowering &PIC16Lowering;
  35
  36 public:
  37   explicit PIC16DAGToDAGISel(PIC16TargetMachine &tm) :
  38         SelectionDAGISel(tm),
  39         TM(tm), PIC16Lowering(*TM.getTargetLowering()) {}
  40
  41   // Pass Name
  42   virtual const char *getPassName() const {
  43     return "PIC16 DAG->DAG Pattern Instruction Selection";
  44   }
  45
  46   virtual void InstructionSelect();
  47
  48 private:
  49   // Include the pieces autogenerated from the target description.
  50 #include "PIC16GenDAGISel.inc"
  51
  52   SDNode *Select(SDValue N);
  53
  54   // Match direct address complex pattern.
  55   bool SelectDirectAddr(SDValue Op, SDValue N, SDValue &Address);
  56
  57 };
  58
  59 }
  60