lib/Target/ARM/Thumb2HazardRecognizer.h

   1 //===-- Thumb2HazardRecognizer.h - Thumb2 Hazard Recognizers ----*- C++ -*-===//
   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 hazard recognizers for scheduling Thumb2 functions on
  11 // ARM processors.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef THUMB2HAZARDRECOGNIZER_H
  16 #define THUMB2HAZARDRECOGNIZER_H
  17
  18 #include "llvm/CodeGen/PostRAHazardRecognizer.h"
  19
  20 namespace llvm {
  21
  22 class MachineInstr;
  23
  24 class Thumb2HazardRecognizer : public PostRAHazardRecognizer {
  25   unsigned ITBlockSize;  // No. of MIs in current IT block yet to be scheduled.
  26   MachineInstr *ITBlockMIs[4];
  27
  28 public:
  29   Thumb2HazardRecognizer(const InstrItineraryData *ItinData) :
  30     PostRAHazardRecognizer(ItinData) {}
  31
  32   virtual HazardType getHazardType(SUnit *SU);
  33   virtual void Reset();
  34   virtual void EmitInstruction(SUnit *SU);
  35 };
  36
  37
  38 } // end namespace llvm
  39
  40 #endif // THUMB2HAZARDRECOGNIZER_H