llvm/lib/Target/M68k/GlSel/M68kInstructionSelector.cpp

   1 //===- M68kInstructionSelector.cpp ------------------------------*- C++ -*-===//
   2 //===----------------------------------------------------------------------===//
   3 /// \file
   4 /// This file implements the targeting of the InstructionSelector class for
   5 /// M68k.
   6 /// \todo This should be generated by TableGen.
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "M68kRegisterBankInfo.h"
  10 #include "M68kSubtarget.h"
  11 #include "M68kTargetMachine.h"
  12 #include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
  13 #include "llvm/CodeGen/GlobalISel/InstructionSelectorImpl.h"
  14 #include "llvm/Support/Debug.h"
  15
  16 #define DEBUG_TYPE "m68k-isel"
  17
  18 using namespace llvm;
  19
  20 #define GET_GLOBALISEL_PREDICATE_BITSET
  21 #include "M68kGenGlobalISel.inc"
  22 #undef GET_GLOBALISEL_PREDICATE_BITSET
  23
  24 namespace {
  25
  26 class M68kInstructionSelector : public InstructionSelector {
  27 public:
  28   M68kInstructionSelector(const M68kTargetMachine &TM, const M68kSubtarget &STI,
  29                           const M68kRegisterBankInfo &RBI);
  30
  31   bool select(MachineInstr &I) override;
  32   static const char *getName() { return DEBUG_TYPE; }
  33
  34 private:
  35   bool selectImpl(MachineInstr &I, CodeGenCoverage &CoverageInfo) const;
  36
  37   const M68kTargetMachine &TM;
  38   const M68kInstrInfo &TII;
  39   const M68kRegisterInfo &TRI;
  40   const M68kRegisterBankInfo &RBI;
  41
  42 #define GET_GLOBALISEL_PREDICATES_DECL
  43 #include "M68kGenGlobalISel.inc"
  44 #undef GET_GLOBALISEL_PREDICATES_DECL
  45
  46 #define GET_GLOBALISEL_TEMPORARIES_DECL
  47 #include "M68kGenGlobalISel.inc"
  48 #undef GET_GLOBALISEL_TEMPORARIES_DECL
  49 };
  50
  51 } // end anonymous namespace
  52
  53 #define GET_GLOBALISEL_IMPL
  54 #include "M68kGenGlobalISel.inc"
  55 #undef GET_GLOBALISEL_IMPL
  56
  57 M68kInstructionSelector::M68kInstructionSelector(
  58     const M68kTargetMachine &TM, const M68kSubtarget &STI,
  59     const M68kRegisterBankInfo &RBI)
  60     : InstructionSelector(), TM(TM), TII(*STI.getInstrInfo()),
  61       TRI(*STI.getRegisterInfo()), RBI(RBI),
  62
  63 #define GET_GLOBALISEL_PREDICATES_INIT
  64 #include "M68kGenGlobalISel.inc"
  65 #undef GET_GLOBALISEL_PREDICATES_INIT
  66 #define GET_GLOBALISEL_TEMPORARIES_INIT
  67 #include "M68kGenGlobalISel.inc"
  68 #undef GET_GLOBALISEL_TEMPORARIES_INIT
  69 {
  70 }
  71
  72 bool M68kInstructionSelector::select(MachineInstr &I) {
  73   // Certain non-generic instructions also need some special handling.
  74   if (!isPreISelGenericOpcode(I.getOpcode()))
  75     return true;
  76
  77   if (selectImpl(I, *CoverageInfo))
  78     return true;
  79
  80   return false;
  81 }
  82
  83 namespace llvm {
  84 InstructionSelector *
  85 createM68kInstructionSelector(const M68kTargetMachine &TM,
  86                               const M68kSubtarget &Subtarget,
  87                               const M68kRegisterBankInfo &RBI) {
  88   return new M68kInstructionSelector(TM, Subtarget, RBI);
  89 }
  90 } // end namespace llvm