lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp

   1 //===- BlackfinIntrinsicInfo.cpp - Intrinsic Information --------*- 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 contains the Blackfin implementation of TargetIntrinsicInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "BlackfinIntrinsicInfo.h"
  15 #include "llvm/DerivedTypes.h"
  16 #include "llvm/Function.h"
  17 #include "llvm/Intrinsics.h"
  18 #include "llvm/Module.h"
  19 #include "llvm/Type.h"
  20 #include "llvm/Support/raw_ostream.h"
  21 #include <cstring>
  22
  23 using namespace llvm;
  24
  25 namespace bfinIntrinsic {
  26
  27   enum ID {
  28     last_non_bfin_intrinsic = Intrinsic::num_intrinsics-1,
  29 #define GET_INTRINSIC_ENUM_VALUES
  30 #include "BlackfinGenIntrinsics.inc"
  31 #undef GET_INTRINSIC_ENUM_VALUES
  32     , num_bfin_intrinsics
  33   };
  34
  35 }
  36
  37 std::string BlackfinIntrinsicInfo::getName(unsigned IntrID, const Type **Tys,
  38                                            unsigned numTys) const {
  39   static const char *const names[] = {
  40 #define GET_INTRINSIC_NAME_TABLE
  41 #include "BlackfinGenIntrinsics.inc"
  42 #undef GET_INTRINSIC_NAME_TABLE
  43   };
  44
  45   assert(!isOverloaded(IntrID) && "Blackfin intrinsics are not overloaded");
  46   if (IntrID < Intrinsic::num_intrinsics)
  47     return 0;
  48   assert(IntrID < bfinIntrinsic::num_bfin_intrinsics && "Invalid intrinsic ID");
  49
  50   std::string Result(names[IntrID - Intrinsic::num_intrinsics]);
  51   return Result;
  52 }
  53
  54 unsigned
  55 BlackfinIntrinsicInfo::lookupName(const char *Name, unsigned Len) const {
  56   if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
  57       || Name[2] != 'v' || Name[3] != 'm')
  58     return 0;  // All intrinsics start with 'llvm.'
  59
  60 #define GET_FUNCTION_RECOGNIZER
  61 #include "BlackfinGenIntrinsics.inc"
  62 #undef GET_FUNCTION_RECOGNIZER
  63   return 0;
  64 }
  65
  66 bool BlackfinIntrinsicInfo::isOverloaded(unsigned IntrID) const {
  67   // Overload Table
  68   const bool OTable[] = {
  69 #define GET_INTRINSIC_OVERLOAD_TABLE
  70 #include "BlackfinGenIntrinsics.inc"
  71 #undef GET_INTRINSIC_OVERLOAD_TABLE
  72   };
  73   if (IntrID == 0)
  74     return false;
  75   else
  76     return OTable[IntrID - Intrinsic::num_intrinsics];
  77 }
  78
  79 /// This defines the "getAttributes(ID id)" method.
  80 #define GET_INTRINSIC_ATTRIBUTES
  81 #include "BlackfinGenIntrinsics.inc"
  82 #undef GET_INTRINSIC_ATTRIBUTES
  83
  84 static const FunctionType *getType(LLVMContext &Context, unsigned id) {
  85   const Type *ResultTy = NULL;
  86   std::vector<Type*> ArgTys;
  87   bool IsVarArg = false;
  88
  89 #define GET_INTRINSIC_GENERATOR
  90 #include "BlackfinGenIntrinsics.inc"
  91 #undef GET_INTRINSIC_GENERATOR
  92
  93   return FunctionType::get(ResultTy, ArgTys, IsVarArg);
  94 }
  95
  96 Function *BlackfinIntrinsicInfo::getDeclaration(Module *M, unsigned IntrID,
  97                                                 const Type **Tys,
  98                                                 unsigned numTy) const {
  99   assert(!isOverloaded(IntrID) && "Blackfin intrinsics are not overloaded");
 100   AttrListPtr AList = getAttributes((bfinIntrinsic::ID) IntrID);
 101   return cast<Function>(M->getOrInsertFunction(getName(IntrID),
 102                                                getType(M->getContext(), IntrID),
 103                                                AList));
 104 }