//
// 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 file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
+#include "CodeGenTarget.h"
#include "IntrinsicEmitter.h"
-#include "Record.h"
+#include "StringMatcher.h"
+#include "llvm/TableGen/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();
-
- 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());
-
- 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];
- }
-
- // 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"));
- }
- if (ArgTypes.size() == 0)
- throw "Intrinsic '"+DefName+"' needs at least a type for the ret value!";
-}
-
//===----------------------------------------------------------------------===//
// IntrinsicEmitter Implementation
//===----------------------------------------------------------------------===//
-void IntrinsicEmitter::run(std::ostream &OS) {
+void IntrinsicEmitter::run(raw_ostream &OS) {
EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);
- std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records);
+ std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly);
+
+ if (TargetOnly && !Ints.empty())
+ TargetPrefix = Ints[0].TargetPrefix;
+
+ EmitPrefix(OS);
// Emit the enum information.
EmitEnumInfo(Ints, OS);
-
+
+ // Emit the intrinsic ID -> name table.
+ EmitIntrinsicToNameTable(Ints, OS);
+
+ // Emit the intrinsic ID -> overload table.
+ EmitIntrinsicToOverloadTable(Ints, OS);
+
// Emit the function name recognizer.
EmitFnNameRecognizer(Ints, OS);
-
+
// Emit the intrinsic verifier.
EmitVerifier(Ints, OS);
+
+ // Emit the intrinsic declaration generator.
+ EmitGenerator(Ints, OS);
+
+ // Emit the intrinsic parameter attributes.
+ EmitAttributes(Ints, OS);
+
+ // Emit intrinsic alias analysis mod/ref behavior.
+ EmitModRefBehavior(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);
+
+ EmitSuffix(OS);
+}
+
+void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) {
+ OS << "// VisualStudio defines setjmp as _setjmp\n"
+ "#if defined(_MSC_VER) && defined(setjmp) && \\\n"
+ " !defined(setjmp_undefined_for_msvc)\n"
+ "# pragma push_macro(\"setjmp\")\n"
+ "# undef setjmp\n"
+ "# define setjmp_undefined_for_msvc\n"
+ "#endif\n\n";
+}
+
+void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) {
+ OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n"
+ "// let's return it to _setjmp state\n"
+ "# pragma pop_macro(\"setjmp\")\n"
+ "# undef setjmp_undefined_for_msvc\n"
+ "#endif\n\n";
}
void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
- std::ostream &OS) {
+ raw_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) {
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;
+ raw_ostream &OS) {
+ // Build a 'first character of function name' -> intrinsic # mapping.
+ std::map<char, std::vector<unsigned> > IntMapping;
for (unsigned i = 0, e = Ints.size(); i != e; ++i)
- IntMapping[Ints[i].Name] = Ints[i].EnumName;
-
+ IntMapping[Ints[i].Name[5]].push_back(i);
+
OS << "// Function name -> enum value recognizer code.\n";
OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
- OS << " switch (Name[5]) {\n";
+ OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n";
+ OS << " switch (Name[5]) { // Dispatch on first letter.\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(),
+ // Emit the intrinsic matching stuff by first letter.
+ for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(),
E = IntMapping.end(); I != E; ++I) {
- assert(I->first.size() > 5 && std::string(I->first.begin(),
- I->first.begin()+5) == "llvm." &&
- "Invalid intrinsic name!");
- if (I->first[5] != LastChar) {
- LastChar = I->first[5];
- OS << " case '" << LastChar << "':\n";
+ OS << " case '" << I->first << "':\n";
+ std::vector<unsigned> &IntList = I->second;
+
+ // Emit all the overloaded intrinsics first, build a table of the
+ // non-overloaded ones.
+ std::vector<StringMatcher::StringPair> MatchTable;
+
+ for (unsigned i = 0, e = IntList.size(); i != e; ++i) {
+ unsigned IntNo = IntList[i];
+ std::string Result = "return " + TargetPrefix + "Intrinsic::" +
+ Ints[IntNo].EnumName + ";";
+
+ if (!Ints[IntNo].isOverloaded) {
+ MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result));
+ continue;
+ }
+
+ // For overloaded intrinsics, only the prefix needs to match
+ std::string TheStr = Ints[IntNo].Name.substr(6);
+ TheStr += '.'; // Require "bswap." instead of bswap.
+ OS << " if (NameR.startswith(\"" << TheStr << "\")) "
+ << Result << '\n';
}
- OS << " if (Name == \"" << I->first << "\") return Intrinsic::"
- << I->second << ";\n";
+ // Emit the matcher logic for the fixed length strings.
+ StringMatcher("NameR", MatchTable, OS).Emit(1);
+ OS << " break; // end of '" << I->first << "' case.\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,
+ raw_ostream &OS) {
+ 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 = Ints.size(); i != e; ++i)
+ OS << " \"" << Ints[i].Name << "\",\n";
+ OS << "#endif\n\n";
+}
+
+void IntrinsicEmitter::
+EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
+ raw_ostream &OS) {
+ OS << "// Intrinsic ID to overload table\n";
+ OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
+ OS << " // Note that entry #0 is the invalid intrinsic!\n";
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
+ OS << " ";
+ if (Ints[i].isOverloaded)
+ OS << "true";
+ else
+ OS << "false";
+ OS << ",\n";
+ }
+ OS << "#endif\n\n";
+}
+
+static void EmitTypeForValueType(raw_ostream &OS, MVT::SimpleValueType VT) {
+ if (EVT(VT).isInteger()) {
+ unsigned BitWidth = EVT(VT).getSizeInBits();
+ OS << "IntegerType::get(Context, " << BitWidth << ")";
+ } else if (VT == MVT::Other) {
+ // MVT::OtherVT is used to mean the empty struct type here.
+ OS << "StructType::get(Context)";
+ } else if (VT == MVT::f32) {
+ OS << "Type::getFloatTy(Context)";
+ } else if (VT == MVT::f64) {
+ OS << "Type::getDoubleTy(Context)";
+ } else if (VT == MVT::f80) {
+ OS << "Type::getX86_FP80Ty(Context)";
+ } else if (VT == MVT::f128) {
+ OS << "Type::getFP128Ty(Context)";
+ } else if (VT == MVT::ppcf128) {
+ OS << "Type::getPPC_FP128Ty(Context)";
+ } else if (VT == MVT::isVoid) {
+ OS << "Type::getVoidTy(Context)";
+ } else if (VT == MVT::Metadata) {
+ OS << "Type::getMetadataTy(Context)";
+ } else if (VT == MVT::x86mmx) {
+ OS << "Type::getX86_MMXTy(Context)";
+ } else {
+ assert(false && "Unsupported ValueType!");
+ }
+}
+
+static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
+ unsigned &ArgNo);
+
+static void EmitTypeGenerate(raw_ostream &OS,
+ const std::vector<Record*> &ArgTypes,
+ unsigned &ArgNo) {
+ if (ArgTypes.empty())
+ return EmitTypeForValueType(OS, MVT::isVoid);
+
+ if (ArgTypes.size() == 1)
+ return EmitTypeGenerate(OS, ArgTypes.front(), ArgNo);
+
+ OS << "StructType::get(";
+
+ for (std::vector<Record*>::const_iterator
+ I = ArgTypes.begin(), E = ArgTypes.end(); I != E; ++I) {
+ EmitTypeGenerate(OS, *I, ArgNo);
+ OS << ", ";
+ }
+
+ OS << " NULL)";
+}
+
+static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
+ unsigned &ArgNo) {
+ MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
+
+ if (ArgType->isSubClassOf("LLVMMatchType")) {
+ unsigned Number = ArgType->getValueAsInt("Number");
+ assert(Number < ArgNo && "Invalid matching number!");
+ if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
+ OS << "VectorType::getExtendedElementVectorType"
+ << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
+ else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
+ OS << "VectorType::getTruncatedElementVectorType"
+ << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
+ else
+ OS << "Tys[" << Number << "]";
+ } else if (VT == MVT::iAny || VT == MVT::fAny || VT == MVT::vAny) {
+ // NOTE: The ArgNo variable here is not the absolute argument number, it is
+ // the index of the "arbitrary" type in the Tys array passed to the
+ // Intrinsic::getDeclaration function. Consequently, we only want to
+ // increment it when we actually hit an overloaded type. Getting this wrong
+ // leads to very subtle bugs!
+ OS << "Tys[" << ArgNo++ << "]";
+ } else if (EVT(VT).isVector()) {
+ EVT VVT = VT;
+ OS << "VectorType::get(";
+ EmitTypeForValueType(OS, VVT.getVectorElementType().getSimpleVT().SimpleTy);
+ OS << ", " << VVT.getVectorNumElements() << ")";
+ } else if (VT == MVT::iPTR) {
+ OS << "PointerType::getUnqual(";
+ EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
+ OS << ")";
+ } else if (VT == MVT::iPTRAny) {
+ // Make sure the user has passed us an argument type to overload. If not,
+ // treat it as an ordinary (not overloaded) intrinsic.
+ OS << "(" << ArgNo << " < Tys.size()) ? Tys[" << ArgNo
+ << "] : PointerType::getUnqual(";
+ EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
+ OS << ")";
+ ++ArgNo;
+ } else if (VT == MVT::isVoid) {
+ if (ArgNo == 0)
+ OS << "Type::getVoidTy(Context)";
+ else
+ // MVT::isVoid is used to mean varargs here.
+ OS << "...";
+ } else {
+ EmitTypeForValueType(OS, VT);
+ }
+}
+
+/// RecordListComparator - Provide a deterministic comparator for lists of
+/// records.
+namespace {
+ typedef std::pair<std::vector<Record*>, std::vector<Record*> > RecPair;
+ struct RecordListComparator {
+ bool operator()(const RecPair &LHS,
+ const RecPair &RHS) const {
+ unsigned i = 0;
+ const std::vector<Record*> *LHSVec = &LHS.first;
+ const std::vector<Record*> *RHSVec = &RHS.first;
+ unsigned RHSSize = RHSVec->size();
+ unsigned LHSSize = LHSVec->size();
+
+ for (; i != LHSSize; ++i) {
+ if (i == RHSSize) return false; // RHS is shorter than LHS.
+ if ((*LHSVec)[i] != (*RHSVec)[i])
+ return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
+ }
+
+ if (i != RHSSize) return true;
+
+ i = 0;
+ LHSVec = &LHS.second;
+ RHSVec = &RHS.second;
+ RHSSize = RHSVec->size();
+ LHSSize = LHSVec->size();
+
+ for (i = 0; i != LHSSize; ++i) {
+ if (i == RHSSize) return false; // RHS is shorter than LHS.
+ if ((*LHSVec)[i] != (*RHSVec)[i])
+ return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
+ }
+
+ return i != RHSSize;
+ }
+ };
+}
+
void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
- std::ostream &OS) {
+ raw_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";
- OS << " Assert1(FTy->getReturnType()->getTypeID() == "
- << Ints[i].ArgTypes[0] << ",\n"
- << " \"Illegal result type!\", IF);\n";
- for (unsigned j = 1; j != Ints[i].ArgTypes.size(); ++j)
- OS << " Assert1(FTy->getParamType(" << j-1 << ")->getTypeID() == "
- << Ints[i].ArgTypes[j] << ",\n"
- << " \"Illegal result type!\", IF);\n";
+
+ // This checking can emit a lot of very common code. To reduce the amount of
+ // code that we emit, batch up cases that have identical types. This avoids
+ // problems where GCC can run out of memory compiling Verifier.cpp.
+ typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
+ MapTy UniqueArgInfos;
+
+ // Compute the unique argument type info.
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i)
+ UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
+ Ints[i].IS.ParamTypeDefs)].push_back(i);
+
+ // Loop through the array, emitting one comparison for each batch.
+ for (MapTy::iterator I = UniqueArgInfos.begin(),
+ E = UniqueArgInfos.end(); I != E; ++I) {
+ for (unsigned i = 0, e = I->second.size(); i != e; ++i)
+ OS << " case Intrinsic::" << Ints[I->second[i]].EnumName << ":\t\t// "
+ << Ints[I->second[i]].Name << "\n";
+
+ const RecPair &ArgTypes = I->first;
+ const std::vector<Record*> &RetTys = ArgTypes.first;
+ const std::vector<Record*> &ParamTys = ArgTypes.second;
+ std::vector<unsigned> OverloadedTypeIndices;
+
+ OS << " VerifyIntrinsicPrototype(ID, IF, " << RetTys.size() << ", "
+ << ParamTys.size();
+
+ // Emit return types.
+ for (unsigned j = 0, je = RetTys.size(); j != je; ++j) {
+ Record *ArgType = RetTys[j];
+ OS << ", ";
+
+ if (ArgType->isSubClassOf("LLVMMatchType")) {
+ unsigned Number = ArgType->getValueAsInt("Number");
+ assert(Number < OverloadedTypeIndices.size() &&
+ "Invalid matching number!");
+ Number = OverloadedTypeIndices[Number];
+ if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
+ OS << "~(ExtendedElementVectorType | " << Number << ")";
+ else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
+ OS << "~(TruncatedElementVectorType | " << Number << ")";
+ else
+ OS << "~" << Number;
+ } else {
+ MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
+ OS << getEnumName(VT);
+
+ if (EVT(VT).isOverloaded())
+ OverloadedTypeIndices.push_back(j);
+
+ if (VT == MVT::isVoid && j != 0 && j != je - 1)
+ throw "Var arg type not last argument";
+ }
+ }
+
+ // Emit the parameter types.
+ for (unsigned j = 0, je = ParamTys.size(); j != je; ++j) {
+ Record *ArgType = ParamTys[j];
+ OS << ", ";
+
+ if (ArgType->isSubClassOf("LLVMMatchType")) {
+ unsigned Number = ArgType->getValueAsInt("Number");
+ assert(Number < OverloadedTypeIndices.size() &&
+ "Invalid matching number!");
+ Number = OverloadedTypeIndices[Number];
+ if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
+ OS << "~(ExtendedElementVectorType | " << Number << ")";
+ else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
+ OS << "~(TruncatedElementVectorType | " << Number << ")";
+ else
+ OS << "~" << Number;
+ } else {
+ MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
+ OS << getEnumName(VT);
+
+ if (EVT(VT).isOverloaded())
+ OverloadedTypeIndices.push_back(j + RetTys.size());
+
+ if (VT == MVT::isVoid && j != 0 && j != je - 1)
+ throw "Var arg type not last argument";
+ }
+ }
+
+ OS << ");\n";
+ OS << " break;\n";
+ }
+ OS << " }\n";
+ OS << "#endif\n\n";
+}
+
+void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
+ raw_ostream &OS) {
+ OS << "// Code for generating Intrinsic function declarations.\n";
+ OS << "#ifdef GET_INTRINSIC_GENERATOR\n";
+ OS << " switch (id) {\n";
+ OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
+
+ // Similar to GET_INTRINSIC_VERIFIER, batch up cases that have identical
+ // types.
+ typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
+ MapTy UniqueArgInfos;
+
+ // Compute the unique argument type info.
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i)
+ UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
+ Ints[i].IS.ParamTypeDefs)].push_back(i);
+
+ // Loop through the array, emitting one generator for each batch.
+ std::string IntrinsicStr = TargetPrefix + "Intrinsic::";
+
+ for (MapTy::iterator I = UniqueArgInfos.begin(),
+ E = UniqueArgInfos.end(); I != E; ++I) {
+ for (unsigned i = 0, e = I->second.size(); i != e; ++i)
+ OS << " case " << IntrinsicStr << Ints[I->second[i]].EnumName
+ << ":\t\t// " << Ints[I->second[i]].Name << "\n";
+
+ const RecPair &ArgTypes = I->first;
+ const std::vector<Record*> &RetTys = ArgTypes.first;
+ const std::vector<Record*> &ParamTys = ArgTypes.second;
+
+ unsigned N = ParamTys.size();
+
+ if (N > 1 &&
+ getValueType(ParamTys[N - 1]->getValueAsDef("VT")) == MVT::isVoid) {
+ OS << " IsVarArg = true;\n";
+ --N;
+ }
+
+ unsigned ArgNo = 0;
+ OS << " ResultTy = ";
+ EmitTypeGenerate(OS, RetTys, ArgNo);
+ OS << ";\n";
+
+ for (unsigned j = 0; j != N; ++j) {
+ OS << " ArgTys.push_back(";
+ EmitTypeGenerate(OS, ParamTys[j], ArgNo);
+ OS << ");\n";
+ }
+
OS << " break;\n";
}
+
OS << " }\n";
OS << "#endif\n\n";
}
+namespace {
+ enum ModRefKind {
+ MRK_none,
+ MRK_readonly,
+ MRK_readnone
+ };
+
+ ModRefKind getModRefKind(const CodeGenIntrinsic &intrinsic) {
+ switch (intrinsic.ModRef) {
+ case CodeGenIntrinsic::NoMem:
+ return MRK_readnone;
+ case CodeGenIntrinsic::ReadArgMem:
+ case CodeGenIntrinsic::ReadMem:
+ return MRK_readonly;
+ case CodeGenIntrinsic::ReadWriteArgMem:
+ case CodeGenIntrinsic::ReadWriteMem:
+ return MRK_none;
+ }
+ assert(0 && "bad mod-ref kind");
+ return MRK_none;
+ }
+
+ struct AttributeComparator {
+ bool operator()(const CodeGenIntrinsic *L, const CodeGenIntrinsic *R) const {
+ // Sort throwing intrinsics after non-throwing intrinsics.
+ if (L->canThrow != R->canThrow)
+ return R->canThrow;
+
+ // Try to order by readonly/readnone attribute.
+ ModRefKind LK = getModRefKind(*L);
+ ModRefKind RK = getModRefKind(*R);
+ if (LK != RK) return (LK > RK);
+
+ // Order by argument attributes.
+ // This is reliable because each side is already sorted internally.
+ return (L->ArgumentAttributes < R->ArgumentAttributes);
+ }
+ };
+}
+
+/// EmitAttributes - This emits the Intrinsic::getAttributes method.
+void IntrinsicEmitter::
+EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) {
+ OS << "// Add parameter attributes that are not common to all intrinsics.\n";
+ OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n";
+ if (TargetOnly)
+ OS << "static AttrListPtr getAttributes(" << TargetPrefix
+ << "Intrinsic::ID id) {\n";
+ else
+ OS << "AttrListPtr Intrinsic::getAttributes(ID id) {\n";
+
+ // Compute the maximum number of attribute arguments.
+ std::vector<const CodeGenIntrinsic*> sortedIntrinsics(Ints.size());
+ unsigned maxArgAttrs = 0;
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
+ const CodeGenIntrinsic &intrinsic = Ints[i];
+ sortedIntrinsics[i] = &intrinsic;
+ maxArgAttrs =
+ std::max(maxArgAttrs, unsigned(intrinsic.ArgumentAttributes.size()));
+ }
+
+ // Emit an array of AttributeWithIndex. Most intrinsics will have
+ // at least one entry, for the function itself (index ~1), which is
+ // usually nounwind.
+ OS << " AttributeWithIndex AWI[" << maxArgAttrs+1 << "];\n";
+ OS << " unsigned NumAttrs = 0;\n";
+ OS << " switch (id) {\n";
+ OS << " default: break;\n";
+
+ AttributeComparator precedes;
+
+ std::stable_sort(sortedIntrinsics.begin(), sortedIntrinsics.end(), precedes);
+
+ for (unsigned i = 0, e = sortedIntrinsics.size(); i != e; ++i) {
+ const CodeGenIntrinsic &intrinsic = *sortedIntrinsics[i];
+ OS << " case " << TargetPrefix << "Intrinsic::"
+ << intrinsic.EnumName << ":\n";
+
+ // Fill out the case if this is the last case for this range of
+ // intrinsics.
+ if (i + 1 != e && !precedes(&intrinsic, sortedIntrinsics[i + 1]))
+ continue;
+
+ // Keep track of the number of attributes we're writing out.
+ unsigned numAttrs = 0;
+
+ // The argument attributes are alreadys sorted by argument index.
+ for (unsigned ai = 0, ae = intrinsic.ArgumentAttributes.size(); ai != ae;) {
+ unsigned argNo = intrinsic.ArgumentAttributes[ai].first;
+
+ OS << " AWI[" << numAttrs++ << "] = AttributeWithIndex::get("
+ << argNo+1 << ", ";
+
+ bool moreThanOne = false;
+
+ do {
+ if (moreThanOne) OS << '|';
+
+ switch (intrinsic.ArgumentAttributes[ai].second) {
+ case CodeGenIntrinsic::NoCapture:
+ OS << "Attribute::NoCapture";
+ break;
+ }
+
+ ++ai;
+ moreThanOne = true;
+ } while (ai != ae && intrinsic.ArgumentAttributes[ai].first == argNo);
+
+ OS << ");\n";
+ }
+
+ ModRefKind modRef = getModRefKind(intrinsic);
+
+ if (!intrinsic.canThrow || modRef) {
+ OS << " AWI[" << numAttrs++ << "] = AttributeWithIndex::get(~0, ";
+ if (!intrinsic.canThrow) {
+ OS << "Attribute::NoUnwind";
+ if (modRef) OS << '|';
+ }
+ switch (modRef) {
+ case MRK_none: break;
+ case MRK_readonly: OS << "Attribute::ReadOnly"; break;
+ case MRK_readnone: OS << "Attribute::ReadNone"; break;
+ }
+ OS << ");\n";
+ }
+
+ if (numAttrs) {
+ OS << " NumAttrs = " << numAttrs << ";\n";
+ OS << " break;\n";
+ } else {
+ OS << " return AttrListPtr();\n";
+ }
+ }
+
+ OS << " }\n";
+ OS << " return AttrListPtr::get(AWI, NumAttrs);\n";
+ OS << "}\n";
+ OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
+}
+
+/// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
+void IntrinsicEmitter::
+EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
+ OS << "// Determine intrinsic alias analysis mod/ref behavior.\n";
+ OS << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n";
+ OS << "switch (iid) {\n";
+ OS << "default:\n return UnknownModRefBehavior;\n";
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
+ if (Ints[i].ModRef == CodeGenIntrinsic::ReadWriteMem)
+ continue;
+ OS << "case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
+ << ":\n";
+ switch (Ints[i].ModRef) {
+ default:
+ assert(false && "Unknown Mod/Ref type!");
+ case CodeGenIntrinsic::NoMem:
+ OS << " return DoesNotAccessMemory;\n";
+ break;
+ case CodeGenIntrinsic::ReadArgMem:
+ OS << " return OnlyReadsArgumentPointees;\n";
+ break;
+ case CodeGenIntrinsic::ReadMem:
+ OS << " return OnlyReadsMemory;\n";
+ break;
+ case CodeGenIntrinsic::ReadWriteArgMem:
+ OS << " return OnlyAccessesArgumentPointees;\n";
+ break;
+ }
+ }
+ OS << "}\n";
+ OS << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
+}
+
+void IntrinsicEmitter::
+EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, raw_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";
+}
+
+/// EmitTargetBuiltins - All of the builtins in the specified map are for the
+/// same target, and we already checked it.
+static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
+ const std::string &TargetPrefix,
+ raw_ostream &OS) {
+
+ std::vector<StringMatcher::StringPair> Results;
+
+ for (std::map<std::string, std::string>::const_iterator I = BIM.begin(),
+ E = BIM.end(); I != E; ++I) {
+ std::string ResultCode =
+ "return " + TargetPrefix + "Intrinsic::" + I->second + ";";
+ Results.push_back(StringMatcher::StringPair(I->first, ResultCode));
+ }
+
+ StringMatcher("BuiltinName", Results, OS).Emit();
+}
+
+
+void IntrinsicEmitter::
+EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
+ raw_ostream &OS) {
+ typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
+ BIMTy BuiltinMap;
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
+ if (!Ints[i].GCCBuiltinName.empty()) {
+ // Get the map for this target prefix.
+ std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
+
+ if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
+ 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";
+
+ if (TargetOnly) {
+ OS << "static " << TargetPrefix << "Intrinsic::ID "
+ << "getIntrinsicForGCCBuiltin(const char "
+ << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
+ } else {
+ OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
+ << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
+ }
+
+ OS << " StringRef BuiltinName(BuiltinNameStr);\n";
+ OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n";
+
+ // Note: this could emit significantly better code if we cared.
+ for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
+ OS << " ";
+ if (!I->first.empty())
+ OS << "if (TargetPrefix == \"" << I->first << "\") ";
+ else
+ OS << "/* Target Independent Builtins */ ";
+ OS << "{\n";
+
+ // Emit the comparisons for this target prefix.
+ EmitTargetBuiltins(I->second, TargetPrefix, OS);
+ OS << " }\n";
+ }
+ OS << " return ";
+ if (!TargetPrefix.empty())
+ OS << "(" << TargetPrefix << "Intrinsic::ID)";
+ OS << "Intrinsic::not_intrinsic;\n";
+ OS << "}\n";
+ OS << "#endif\n\n";
+}
projects / oota-llvm.git / blobdiff