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//===-- PIC16ISelDAGToDAG.cpp - A dag to dag inst selector for PIC16 ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines an instruction selector for the PIC16 target.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pic16-isel"
#include "PIC16.h"
#include "PIC16ISelLowering.h"
#include "PIC16RegisterInfo.h"
#include "PIC16TargetMachine.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Intrinsics.h"
using namespace llvm;
namespace {
class VISIBILITY_HIDDEN PIC16DAGToDAGISel : public SelectionDAGISel {
/// TM - Keep a reference to PIC16TargetMachine.
PIC16TargetMachine &TM;
/// PIC16Lowering - This object fully describes how to lower LLVM code to an
/// PIC16-specific SelectionDAG.
PIC16TargetLowering &PIC16Lowering;
public:
explicit PIC16DAGToDAGISel(PIC16TargetMachine &tm) :
SelectionDAGISel(tm),
TM(tm), PIC16Lowering(*TM.getTargetLowering()) {
// Keep PIC16 specific DAGISel to use during the lowering
PIC16Lowering.ISel = this;
}
// Pass Name
virtual const char *getPassName() const {
return "PIC16 DAG->DAG Pattern Instruction Selection";
}
virtual void InstructionSelect();
private:
// Include the pieces autogenerated from the target description.
#include "PIC16GenDAGISel.inc"
SDNode *Select(SDNode *N);
// Match direct address complex pattern.
bool SelectDirectAddr(SDNode *Op, SDValue N, SDValue &Address);
};
}
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