utils/TableGen/IntrinsicEmitter.cpp - fp2-dev/platform/external/llvm - Gitiles

 //===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file was developed by Chris Lattner and is distributed under
 // the University of Illinois Open Source License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This tablegen backend emits information about intrinsic functions.
 //
 //===----------------------------------------------------------------------===//

 #include "IntrinsicEmitter.h"
 #include "Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 using namespace llvm;

 //===----------------------------------------------------------------------===//
 // CodeGenIntrinsic Implementation
 //===----------------------------------------------------------------------===//

 std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC) {
   std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
   return std::vector<CodeGenIntrinsic>(I.begin(), I.end());
 }

 CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
   std::string DefName = R->getName();
   ModRef = WriteMem;

   if (DefName.size() <= 4 ||
       std::string(DefName.begin(), DefName.begin()+4) != "int_")
     throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
   EnumName = std::string(DefName.begin()+4, DefName.end());
   if (R->getValue("GCCBuiltinName"))  // Ignore a missing GCCBuiltinName field.
     GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
   TargetPrefix   = R->getValueAsString("TargetPrefix");
   Name = R->getValueAsString("LLVMName");
   if (Name == "") {
     // If an explicit name isn't specified, derive one from the DefName.
     Name = "llvm.";
     for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
       if (EnumName[i] == '_')
         Name += '.';
       else
         Name += EnumName[i];
   } else {
     // Verify it starts with "llvm.".
     if (Name.size() <= 5 ||
         std::string(Name.begin(), Name.begin()+5) != "llvm.")
       throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
   }

   // If TargetPrefix is specified, make sure that Name starts with
   // "llvm.<targetprefix>.".
   if (!TargetPrefix.empty()) {
     if (Name.size() < 6+TargetPrefix.size() ||
         std::string(Name.begin()+5, Name.begin()+6+TargetPrefix.size())
           != (TargetPrefix+"."))
       throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
             TargetPrefix + ".'!";
   }

   // Parse the list of argument types.
   ListInit *TypeList = R->getValueAsListInit("Types");
   for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
     DefInit *DI = dynamic_cast<DefInit*>(TypeList->getElement(i));
     assert(DI && "Invalid list type!");
     Record *TyEl = DI->getDef();
     assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
     ArgTypes.push_back(TyEl->getValueAsString("TypeVal"));
     ArgTypeDefs.push_back(TyEl);
   }
   if (ArgTypes.size() == 0)
     throw "Intrinsic '"+DefName+"' needs at least a type for the ret value!";

   // Parse the intrinsic properties.
   ListInit *PropList = R->getValueAsListInit("Properties");
   for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
     DefInit *DI = dynamic_cast<DefInit*>(PropList->getElement(i));
     assert(DI && "Invalid list type!");
     Record *Property = DI->getDef();
     assert(Property->isSubClassOf("IntrinsicProperty") &&
            "Expected a property!");

     if (Property->getName() == "InstrNoMem")
       ModRef = NoMem;
     else if (Property->getName() == "InstrReadArgMem")
       ModRef = ReadArgMem;
     else if (Property->getName() == "IntrReadMem")
       ModRef = ReadMem;
     else if (Property->getName() == "InstrWriteArgMem")
       ModRef = WriteArgMem;
     else if (Property->getName() == "IntrWriteMem")
       ModRef = WriteMem;
     else
       assert(0 && "Unknown property!");
   }
 }

 //===----------------------------------------------------------------------===//
 // IntrinsicEmitter Implementation
 //===----------------------------------------------------------------------===//

 void IntrinsicEmitter::run(std::ostream &OS) {
   EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);

   std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records);

   // Emit the enum information.
   EmitEnumInfo(Ints, OS);

   // Emit the intrinsic ID -> name table.
   EmitIntrinsicToNameTable(Ints, OS);

   // Emit the function name recognizer.
   EmitFnNameRecognizer(Ints, OS);

   // Emit the intrinsic verifier.
   EmitVerifier(Ints, OS);

   // Emit mod/ref info for each function.
   EmitModRefInfo(Ints, OS);

   // Emit table of non-memory accessing intrinsics.
   EmitNoMemoryInfo(Ints, OS);

   // Emit side effect info for each intrinsic.
   EmitSideEffectInfo(Ints, OS);

   // Emit a list of intrinsics with corresponding GCC builtins.
   EmitGCCBuiltinList(Ints, OS);

   // Emit code to translate GCC builtins into LLVM intrinsics.
   EmitIntrinsicToGCCBuiltinMap(Ints, OS);
 }

 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
                                     std::ostream &OS) {
   OS << "// Enum values for Intrinsics.h\n";
   OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     OS << "    " << Ints[i].EnumName;
     OS << ((i != e-1) ? ", " : "  ");
     OS << std::string(40-Ints[i].EnumName.size(), ' ')
       << "// " << Ints[i].Name << "\n";
   }
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
                      std::ostream &OS) {
   // Build a function name -> intrinsic name mapping.
   std::map<std::string, std::string> IntMapping;
   for (unsigned i = 0, e = Ints.size(); i != e; ++i)
     IntMapping[Ints[i].Name] = Ints[i].EnumName;

   OS << "// Function name -> enum value recognizer code.\n";
   OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
   OS << "  switch (Name[5]) {\n";
   OS << "  default: break;\n";
   // Emit the intrinsics in sorted order.
   char LastChar = 0;
   for (std::map<std::string, std::string>::iterator I = IntMapping.begin(),
        E = IntMapping.end(); I != E; ++I) {
     if (I->first[5] != LastChar) {
       LastChar = I->first[5];
       OS << "  case '" << LastChar << "':\n";
     }

     OS << "    if (Name == \"" << I->first << "\") return Intrinsic::"
        << I->second << ";\n";
   }
   OS << "  }\n";
   OS << "  // The 'llvm.' namespace is reserved!\n";
   OS << "  assert(0 && \"Unknown LLVM intrinsic function!\");\n";
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
                          std::ostream &OS) {
   std::vector<std::string> Names;
   for (unsigned i = 0, e = Ints.size(); i != e; ++i)
     Names.push_back(Ints[i].Name);
   std::sort(Names.begin(), Names.end());

   OS << "// Intrinsic ID to name table\n";
   OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n";
   OS << "  // Note that entry #0 is the invalid intrinsic!\n";
   for (unsigned i = 0, e = Names.size(); i != e; ++i)
     OS << "  \"" << Names[i] << "\",\n";
   OS << "#endif\n\n";
 }

 static void EmitTypeVerify(std::ostream &OS, const std::string &Val,
                            Record *ArgType) {
   OS << "    Assert1(" << Val << "->getTypeID() == "
      << ArgType->getValueAsString("TypeVal") << ",\n"
      << "            \"Illegal intrinsic type!\", IF);\n";

   // If this is a packed type, check that the subtype and size are correct.
   if (ArgType->isSubClassOf("LLVMPackedType")) {
     Record *SubType = ArgType->getValueAsDef("ElTy");
     OS << "    Assert1(cast<PackedType>(" << Val
        << ")->getElementType()->getTypeID() == "
        << SubType->getValueAsString("TypeVal") << ",\n"
        << "            \"Illegal intrinsic type!\", IF);\n";
     OS << "    Assert1(cast<PackedType>(" << Val << ")->getNumElements() == "
        << ArgType->getValueAsInt("NumElts") << ",\n"
        << "            \"Illegal intrinsic type!\", IF);\n";
   }
 }

 void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
                                     std::ostream &OS) {
   OS << "// Verifier::visitIntrinsicFunctionCall code.\n";
   OS << "#ifdef GET_INTRINSIC_VERIFIER\n";
   OS << "  switch (ID) {\n";
   OS << "  default: assert(0 && \"Invalid intrinsic!\");\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     OS << "  case Intrinsic::" << Ints[i].EnumName << ":\t\t// "
        << Ints[i].Name << "\n";
     OS << "    Assert1(FTy->getNumParams() == " << Ints[i].ArgTypes.size()-1
        << ",\n"
        << "            \"Illegal # arguments for intrinsic function!\", IF);\n";
     EmitTypeVerify(OS, "FTy->getReturnType()", Ints[i].ArgTypeDefs[0]);
     for (unsigned j = 1; j != Ints[i].ArgTypes.size(); ++j)
       EmitTypeVerify(OS, "FTy->getParamType(" + utostr(j-1) + ")",
                      Ints[i].ArgTypeDefs[j]);
     OS << "    break;\n";
   }
   OS << "  }\n";
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::EmitModRefInfo(const std::vector<CodeGenIntrinsic> &Ints,
                                       std::ostream &OS) {
   OS << "// BasicAliasAnalysis code.\n";
   OS << "#ifdef GET_MODREF_BEHAVIOR\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     switch (Ints[i].ModRef) {
     default: break;
     case CodeGenIntrinsic::NoMem:
       OS << "  NoMemoryTable.push_back(\"" << Ints[i].Name << "\");\n";
       break;
     case CodeGenIntrinsic::ReadArgMem:
     case CodeGenIntrinsic::ReadMem:
       OS << "  OnlyReadsMemoryTable.push_back(\"" << Ints[i].Name << "\");\n";
       break;
     }
   }
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitNoMemoryInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS) {
   OS << "// SelectionDAGIsel code.\n";
   OS << "#ifdef GET_NO_MEMORY_INTRINSICS\n";
   OS << "  switch (IntrinsicID) {\n";
   OS << "  default: break;\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     switch (Ints[i].ModRef) {
     default: break;
     case CodeGenIntrinsic::NoMem:
       OS << "  case Intrinsic::" << Ints[i].EnumName << ":\n";
       break;
     }
   }
   OS << "    return true; // These intrinsics have no side effects.\n";
   OS << "  }\n";
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitSideEffectInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
   OS << "// isInstructionTriviallyDead code.\n";
   OS << "#ifdef GET_SIDE_EFFECT_INFO\n";
   OS << "  switch (F->getIntrinsicID()) {\n";
   OS << "  default: break;\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     switch (Ints[i].ModRef) {
     default: break;
     case CodeGenIntrinsic::NoMem:
     case CodeGenIntrinsic::ReadArgMem:
     case CodeGenIntrinsic::ReadMem:
       OS << "  case Intrinsic::" << Ints[i].EnumName << ":\n";
       break;
     }
   }
   OS << "    return true; // These intrinsics have no side effects.\n";
   OS << "  }\n";
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
   OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";
   OS << "#ifdef GET_GCC_BUILTIN_NAME\n";
   OS << "  switch (F->getIntrinsicID()) {\n";
   OS << "  default: BuiltinName = \"\"; break;\n";
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     if (!Ints[i].GCCBuiltinName.empty()) {
       OS << "  case Intrinsic::" << Ints[i].EnumName << ": BuiltinName = \""
          << Ints[i].GCCBuiltinName << "\"; break;\n";
     }
   }
   OS << "  }\n";
   OS << "#endif\n\n";
 }

 void IntrinsicEmitter::
 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
                              std::ostream &OS) {
   typedef std::map<std::pair<std::string, std::string>, std::string> BIMTy;
   BIMTy BuiltinMap;
   for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
     if (!Ints[i].GCCBuiltinName.empty()) {
       std::pair<std::string, std::string> Key(Ints[i].GCCBuiltinName,
                                               Ints[i].TargetPrefix);
       if (!BuiltinMap.insert(std::make_pair(Key, Ints[i].EnumName)).second)
         throw "Intrinsic '" + Ints[i].TheDef->getName() +
               "': duplicate GCC builtin name!";
     }
   }

   OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
   OS << "// This is used by the C front-end.  The GCC builtin name is passed\n";
   OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
   OS << "// in as TargetPrefix.  The result is assigned to 'IntrinsicID'.\n";
   OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
   OS << "  if (0);\n";
   // Note: this could emit significantly better code if we cared.
   for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
     OS << "  else if (";
     if (!I->first.second.empty()) {
       // Emit this as a strcmp, so it can be constant folded by the FE.
       OS << "!strcmp(TargetPrefix, \"" << I->first.second << "\") &&\n"
          << "           ";
     }
     OS << "!strcmp(BuiltinName, \"" << I->first.first << "\"))\n";
     OS << "    IntrinsicID = Intrinsic::" << I->second << ";\n";
   }
   OS << "  else\n";
   OS << "    IntrinsicID = Intrinsic::not_intrinsic;\n";
   OS << "#endif\n\n";
 }
	//===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===//
	//
	// The LLVM Compiler Infrastructure
	//
	// This file was developed by Chris Lattner and is distributed under
	// the University of Illinois Open Source License. See LICENSE.TXT for details.
	//
	//===----------------------------------------------------------------------===//
	//
	// This tablegen backend emits information about intrinsic functions.
	//
	//===----------------------------------------------------------------------===//

	#include "IntrinsicEmitter.h"
	#include "Record.h"
	#include "llvm/ADT/StringExtras.h"
	#include <algorithm>
	using namespace llvm;

	//===----------------------------------------------------------------------===//
	// CodeGenIntrinsic Implementation
	//===----------------------------------------------------------------------===//

	std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC) {
	std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
	return std::vector<CodeGenIntrinsic>(I.begin(), I.end());
	}

	CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
	std::string DefName = R->getName();
	ModRef = WriteMem;

	if (DefName.size() <= 4 \|\|
	std::string(DefName.begin(), DefName.begin()+4) != "int_")
	throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
	EnumName = std::string(DefName.begin()+4, DefName.end());
	if (R->getValue("GCCBuiltinName")) // Ignore a missing GCCBuiltinName field.
	GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
	TargetPrefix = R->getValueAsString("TargetPrefix");
	Name = R->getValueAsString("LLVMName");
	if (Name == "") {
	// If an explicit name isn't specified, derive one from the DefName.
	Name = "llvm.";
	for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
	if (EnumName[i] == '_')
	Name += '.';
	else
	Name += EnumName[i];
	} else {
	// Verify it starts with "llvm.".
	if (Name.size() <= 5 \|\|
	std::string(Name.begin(), Name.begin()+5) != "llvm.")
	throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
	}

	// If TargetPrefix is specified, make sure that Name starts with
	// "llvm.<targetprefix>.".
	if (!TargetPrefix.empty()) {
	if (Name.size() < 6+TargetPrefix.size() \|\|
	std::string(Name.begin()+5, Name.begin()+6+TargetPrefix.size())
	!= (TargetPrefix+"."))
	throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
	TargetPrefix + ".'!";
	}

	// Parse the list of argument types.
	ListInit *TypeList = R->getValueAsListInit("Types");
	for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
	DefInit DI = dynamic_cast<DefInit>(TypeList->getElement(i));
	assert(DI && "Invalid list type!");
	Record *TyEl = DI->getDef();
	assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
	ArgTypes.push_back(TyEl->getValueAsString("TypeVal"));
	ArgTypeDefs.push_back(TyEl);
	}
	if (ArgTypes.size() == 0)
	throw "Intrinsic '"+DefName+"' needs at least a type for the ret value!";

	// Parse the intrinsic properties.
	ListInit *PropList = R->getValueAsListInit("Properties");
	for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
	DefInit DI = dynamic_cast<DefInit>(PropList->getElement(i));
	assert(DI && "Invalid list type!");
	Record *Property = DI->getDef();
	assert(Property->isSubClassOf("IntrinsicProperty") &&
	"Expected a property!");

	if (Property->getName() == "InstrNoMem")
	ModRef = NoMem;
	else if (Property->getName() == "InstrReadArgMem")
	ModRef = ReadArgMem;
	else if (Property->getName() == "IntrReadMem")
	ModRef = ReadMem;
	else if (Property->getName() == "InstrWriteArgMem")
	ModRef = WriteArgMem;
	else if (Property->getName() == "IntrWriteMem")
	ModRef = WriteMem;
	else
	assert(0 && "Unknown property!");
	}
	}

	//===----------------------------------------------------------------------===//
	// IntrinsicEmitter Implementation
	//===----------------------------------------------------------------------===//

	void IntrinsicEmitter::run(std::ostream &OS) {
	EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);

	std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records);

	// Emit the enum information.
	EmitEnumInfo(Ints, OS);

	// Emit the intrinsic ID -> name table.
	EmitIntrinsicToNameTable(Ints, OS);

	// Emit the function name recognizer.
	EmitFnNameRecognizer(Ints, OS);

	// Emit the intrinsic verifier.
	EmitVerifier(Ints, OS);

	// Emit mod/ref info for each function.
	EmitModRefInfo(Ints, OS);

	// Emit table of non-memory accessing intrinsics.
	EmitNoMemoryInfo(Ints, OS);

	// Emit side effect info for each intrinsic.
	EmitSideEffectInfo(Ints, OS);

	// Emit a list of intrinsics with corresponding GCC builtins.
	EmitGCCBuiltinList(Ints, OS);

	// Emit code to translate GCC builtins into LLVM intrinsics.
	EmitIntrinsicToGCCBuiltinMap(Ints, OS);
	}

	void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	OS << "// Enum values for Intrinsics.h\n";
	OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	OS << " " << Ints[i].EnumName;
	OS << ((i != e-1) ? ", " : " ");
	OS << std::string(40-Ints[i].EnumName.size(), ' ')
	<< "// " << Ints[i].Name << "\n";
	}
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	// Build a function name -> intrinsic name mapping.
	std::map<std::string, std::string> IntMapping;
	for (unsigned i = 0, e = Ints.size(); i != e; ++i)
	IntMapping[Ints[i].Name] = Ints[i].EnumName;

	OS << "// Function name -> enum value recognizer code.\n";
	OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
	OS << " switch (Name[5]) {\n";
	OS << " default: break;\n";
	// Emit the intrinsics in sorted order.
	char LastChar = 0;
	for (std::map<std::string, std::string>::iterator I = IntMapping.begin(),
	E = IntMapping.end(); I != E; ++I) {
	if (I->first[5] != LastChar) {
	LastChar = I->first[5];
	OS << " case '" << LastChar << "':\n";
	}

	OS << " if (Name == \"" << I->first << "\") return Intrinsic::"
	<< I->second << ";\n";
	}
	OS << " }\n";
	OS << " // The 'llvm.' namespace is reserved!\n";
	OS << " assert(0 && \"Unknown LLVM intrinsic function!\");\n";
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	std::vector<std::string> Names;
	for (unsigned i = 0, e = Ints.size(); i != e; ++i)
	Names.push_back(Ints[i].Name);
	std::sort(Names.begin(), Names.end());

	OS << "// Intrinsic ID to name table\n";
	OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n";
	OS << " // Note that entry #0 is the invalid intrinsic!\n";
	for (unsigned i = 0, e = Names.size(); i != e; ++i)
	OS << " \"" << Names[i] << "\",\n";
	OS << "#endif\n\n";
	}

	static void EmitTypeVerify(std::ostream &OS, const std::string &Val,
	Record *ArgType) {
	OS << " Assert1(" << Val << "->getTypeID() == "
	<< ArgType->getValueAsString("TypeVal") << ",\n"
	<< " \"Illegal intrinsic type!\", IF);\n";

	// If this is a packed type, check that the subtype and size are correct.
	if (ArgType->isSubClassOf("LLVMPackedType")) {
	Record *SubType = ArgType->getValueAsDef("ElTy");
	OS << " Assert1(cast<PackedType>(" << Val
	<< ")->getElementType()->getTypeID() == "
	<< SubType->getValueAsString("TypeVal") << ",\n"
	<< " \"Illegal intrinsic type!\", IF);\n";
	OS << " Assert1(cast<PackedType>(" << Val << ")->getNumElements() == "
	<< ArgType->getValueAsInt("NumElts") << ",\n"
	<< " \"Illegal intrinsic type!\", IF);\n";
	}
	}

	void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	OS << "// Verifier::visitIntrinsicFunctionCall code.\n";
	OS << "#ifdef GET_INTRINSIC_VERIFIER\n";
	OS << " switch (ID) {\n";
	OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	OS << " case Intrinsic::" << Ints[i].EnumName << ":\t\t// "
	<< Ints[i].Name << "\n";
	OS << " Assert1(FTy->getNumParams() == " << Ints[i].ArgTypes.size()-1
	<< ",\n"
	<< " \"Illegal # arguments for intrinsic function!\", IF);\n";
	EmitTypeVerify(OS, "FTy->getReturnType()", Ints[i].ArgTypeDefs[0]);
	for (unsigned j = 1; j != Ints[i].ArgTypes.size(); ++j)
	EmitTypeVerify(OS, "FTy->getParamType(" + utostr(j-1) + ")",
	Ints[i].ArgTypeDefs[j]);
	OS << " break;\n";
	}
	OS << " }\n";
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::EmitModRefInfo(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	OS << "// BasicAliasAnalysis code.\n";
	OS << "#ifdef GET_MODREF_BEHAVIOR\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	switch (Ints[i].ModRef) {
	default: break;
	case CodeGenIntrinsic::NoMem:
	OS << " NoMemoryTable.push_back(\"" << Ints[i].Name << "\");\n";
	break;
	case CodeGenIntrinsic::ReadArgMem:
	case CodeGenIntrinsic::ReadMem:
	OS << " OnlyReadsMemoryTable.push_back(\"" << Ints[i].Name << "\");\n";
	break;
	}
	}
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitNoMemoryInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS) {
	OS << "// SelectionDAGIsel code.\n";
	OS << "#ifdef GET_NO_MEMORY_INTRINSICS\n";
	OS << " switch (IntrinsicID) {\n";
	OS << " default: break;\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	switch (Ints[i].ModRef) {
	default: break;
	case CodeGenIntrinsic::NoMem:
	OS << " case Intrinsic::" << Ints[i].EnumName << ":\n";
	break;
	}
	}
	OS << " return true; // These intrinsics have no side effects.\n";
	OS << " }\n";
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitSideEffectInfo(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
	OS << "// isInstructionTriviallyDead code.\n";
	OS << "#ifdef GET_SIDE_EFFECT_INFO\n";
	OS << " switch (F->getIntrinsicID()) {\n";
	OS << " default: break;\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	switch (Ints[i].ModRef) {
	default: break;
	case CodeGenIntrinsic::NoMem:
	case CodeGenIntrinsic::ReadArgMem:
	case CodeGenIntrinsic::ReadMem:
	OS << " case Intrinsic::" << Ints[i].EnumName << ":\n";
	break;
	}
	}
	OS << " return true; // These intrinsics have no side effects.\n";
	OS << " }\n";
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
	OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";
	OS << "#ifdef GET_GCC_BUILTIN_NAME\n";
	OS << " switch (F->getIntrinsicID()) {\n";
	OS << " default: BuiltinName = \"\"; break;\n";
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	if (!Ints[i].GCCBuiltinName.empty()) {
	OS << " case Intrinsic::" << Ints[i].EnumName << ": BuiltinName = \""
	<< Ints[i].GCCBuiltinName << "\"; break;\n";
	}
	}
	OS << " }\n";
	OS << "#endif\n\n";
	}

	void IntrinsicEmitter::
	EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
	std::ostream &OS) {
	typedef std::map<std::pair<std::string, std::string>, std::string> BIMTy;
	BIMTy BuiltinMap;
	for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
	if (!Ints[i].GCCBuiltinName.empty()) {
	std::pair<std::string, std::string> Key(Ints[i].GCCBuiltinName,
	Ints[i].TargetPrefix);
	if (!BuiltinMap.insert(std::make_pair(Key, Ints[i].EnumName)).second)
	throw "Intrinsic '" + Ints[i].TheDef->getName() +
	"': duplicate GCC builtin name!";
	}
	}

	OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
	OS << "// This is used by the C front-end. The GCC builtin name is passed\n";
	OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
	OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
	OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
	OS << " if (0);\n";
	// Note: this could emit significantly better code if we cared.
	for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
	OS << " else if (";
	if (!I->first.second.empty()) {
	// Emit this as a strcmp, so it can be constant folded by the FE.
	OS << "!strcmp(TargetPrefix, \"" << I->first.second << "\") &&\n"
	<< " ";
	}
	OS << "!strcmp(BuiltinName, \"" << I->first.first << "\"))\n";
	OS << " IntrinsicID = Intrinsic::" << I->second << ";\n";
	}
	OS << " else\n";
	OS << " IntrinsicID = Intrinsic::not_intrinsic;\n";
	OS << "#endif\n\n";
	}