lib/Target/PTX/PTXISelDAGToDAG.cpp

   1 //===-- PTXISelDAGToDAG.cpp - A dag to dag inst selector for PTX ----------===//
   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 PTX target.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PTX.h"
  15 #include "PTXTargetMachine.h"
  16 #include "llvm/CodeGen/SelectionDAGISel.h"
  17
  18 using namespace llvm;
  19
  20 namespace {
  21 // PTXDAGToDAGISel - PTX specific code to select PTX machine
  22 // instructions for SelectionDAG operations.
  23 class PTXDAGToDAGISel : public SelectionDAGISel {
  24   public:
  25     PTXDAGToDAGISel(PTXTargetMachine &TM, CodeGenOpt::Level OptLevel);
  26
  27     virtual const char *getPassName() const {
  28       return "PTX DAG->DAG Pattern Instruction Selection";
  29     }
  30
  31     SDNode *Select(SDNode *Node);
  32
  33     // Include the pieces auto'gened from the target description
  34 #include "PTXGenDAGISel.inc"
  35
  36 }; // class PTXDAGToDAGISel
  37 } // namespace
  38
  39 // createPTXISelDag - This pass converts a legalized DAG into a
  40 // PTX-specific DAG, ready for instruction scheduling
  41 FunctionPass *llvm::createPTXISelDag(PTXTargetMachine &TM,
  42                                      CodeGenOpt::Level OptLevel) {
  43   return new PTXDAGToDAGISel(TM, OptLevel);
  44 }
  45
  46 PTXDAGToDAGISel::PTXDAGToDAGISel(PTXTargetMachine &TM,
  47                                  CodeGenOpt::Level OptLevel)
  48   : SelectionDAGISel(TM, OptLevel) {}
  49
  50 SDNode *PTXDAGToDAGISel::Select(SDNode *Node) {
  51   // SelectCode() is auto'gened
  52   return SelectCode(Node);
  53 }