X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FIntrinsicEmitter.cpp;h=ab7b58b8ba3cdffef05f45ad04b35efeacdd3b83;hb=4c8c83022b501759d8559e224c84ae2a9921ba41;hp=f884c424a71f3c9fd6208fad043ca64f0cb36079;hpb=c4de3dec62c3f60ae7297f93c19c799c403c2e9f;p=oota-llvm.git diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp index f884c424a71..ab7b58b8ba3 100644 --- a/utils/TableGen/IntrinsicEmitter.cpp +++ b/utils/TableGen/IntrinsicEmitter.cpp @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// // @@ -11,6 +11,7 @@ // //===----------------------------------------------------------------------===// +#include "CodeGenTarget.h" #include "IntrinsicEmitter.h" #include "Record.h" #include "llvm/ADT/StringExtras.h" @@ -41,14 +42,8 @@ void IntrinsicEmitter::run(std::ostream &OS) { // Emit the intrinsic declaration generator. EmitGenerator(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 the intrinsic parameter attributes. + EmitAttributes(Ints, OS); // Emit a list of intrinsics with corresponding GCC builtins. EmitGCCBuiltinList(Ints, OS); @@ -94,17 +89,17 @@ EmitFnNameRecognizer(const std::vector &Ints, // For overloaded intrinsics, only the prefix needs to match if (Ints[I->second].isOverloaded) - OS << " if (Len >= " << I->first.size() - << " && !memcmp(Name, \"" << I->first << "\", " << I->first.size() - << ")) return Intrinsic::" << Ints[I->second].EnumName << ";\n"; + OS << " if (Len > " << I->first.size() + << " && !memcmp(Name, \"" << I->first << ".\", " + << (I->first.size() + 1) << ")) return Intrinsic::" + << Ints[I->second].EnumName << ";\n"; else OS << " if (Len == " << I->first.size() - << " && !memcmp(Name, \"" << I->first << "\", Len)) return Intrinsic::" + << " && !memcmp(Name, \"" << I->first << "\", " + << I->first.size() << ")) return Intrinsic::" << Ints[I->second].EnumName << ";\n"; } OS << " }\n"; - OS << " // The 'llvm.' namespace is reserved!\n"; - OS << " assert(0 && \"Unknown LLVM intrinsic function!\");\n"; OS << "#endif\n\n"; } @@ -119,43 +114,62 @@ EmitIntrinsicToNameTable(const std::vector &Ints, OS << "#endif\n\n"; } -static bool EmitTypeVerify(std::ostream &OS, Record *ArgType) { - if (ArgType->getValueAsString("TypeVal") == "...") return true; - - OS << "(int)" << ArgType->getValueAsString("TypeVal") << ", "; - // If this is an integer type, check the width is correct. - if (ArgType->isSubClassOf("LLVMIntegerType")) - OS << ArgType->getValueAsInt("Width") << ", "; - - // If this is a vector type, check that the subtype and size are correct. - else if (ArgType->isSubClassOf("LLVMVectorType")) { - EmitTypeVerify(OS, ArgType->getValueAsDef("ElTy")); - OS << ArgType->getValueAsInt("NumElts") << ", "; +static void EmitTypeForValueType(std::ostream &OS, MVT::SimpleValueType VT) { + if (MVT(VT).isInteger()) { + unsigned BitWidth = MVT(VT).getSizeInBits(); + OS << "IntegerType::get(" << BitWidth << ")"; + } else if (VT == MVT::Other) { + // MVT::OtherVT is used to mean the empty struct type here. + OS << "StructType::get(std::vector())"; + } else if (VT == MVT::f32) { + OS << "Type::FloatTy"; + } else if (VT == MVT::f64) { + OS << "Type::DoubleTy"; + } else if (VT == MVT::f80) { + OS << "Type::X86_FP80Ty"; + } else if (VT == MVT::f128) { + OS << "Type::FP128Ty"; + } else if (VT == MVT::ppcf128) { + OS << "Type::PPC_FP128Ty"; + } else if (VT == MVT::isVoid) { + OS << "Type::VoidTy"; + } else { + assert(false && "Unsupported ValueType!"); } - - return false; } -static void EmitTypeGenerate(std::ostream &OS, Record *ArgType, unsigned ArgNo){ - if (ArgType->isSubClassOf("LLVMIntegerType")) { - unsigned BitWidth = ArgType->getValueAsInt("Width"); - if (BitWidth == 0) - OS << "Tys[" << ArgNo << "]"; - else - OS << "IntegerType::get(" << BitWidth << ")"; - } else if (ArgType->isSubClassOf("LLVMVectorType")) { +static void EmitTypeGenerate(std::ostream &OS, 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!"); + OS << "Tys[" << Number << "]"; + } else if (VT == MVT::iAny || VT == MVT::fAny) { + // 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 (MVT(VT).isVector()) { + MVT VVT = VT; OS << "VectorType::get("; - EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo); - OS << ", " << ArgType->getValueAsInt("NumElts") << ")"; - } else if (ArgType->isSubClassOf("LLVMPointerType")) { - OS << "PointerType::get("; + EmitTypeForValueType(OS, VVT.getVectorElementType().getSimpleVT()); + OS << ", " << VVT.getVectorNumElements() << ")"; + } else if (VT == MVT::iPTR) { + OS << "PointerType::getUnqual("; EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo); OS << ")"; - } else if (ArgType->isSubClassOf("LLVMEmptyStructType")) { - OS << "StructType::get(std::vector())"; + } else if (VT == MVT::isVoid) { + if (ArgNo == 0) + OS << "Type::VoidTy"; + else + // MVT::isVoid is used to mean varargs here. + OS << "..."; } else { - OS << "Type::getPrimitiveType("; - OS << ArgType->getValueAsString("TypeVal") << ")"; + EmitTypeForValueType(OS, VT); } } @@ -204,18 +218,24 @@ void IntrinsicEmitter::EmitVerifier(const std::vector &Ints, } const std::vector &ArgTypes = I->first; - OS << " VerifyIntrinsicPrototype(ID, IF, "; - bool VarArg = false; + OS << " VerifyIntrinsicPrototype(ID, IF, " << ArgTypes.size() << ", "; for (unsigned j = 0; j != ArgTypes.size(); ++j) { - VarArg = EmitTypeVerify(OS, ArgTypes[j]); - if (VarArg) { - if ((j+1) != ArgTypes.size()) + Record *ArgType = ArgTypes[j]; + if (ArgType->isSubClassOf("LLVMMatchType")) { + unsigned Number = ArgType->getValueAsInt("Number"); + assert(Number < j && "Invalid matching number!"); + OS << "~" << Number; + } else { + MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT")); + OS << getEnumName(VT); + if (VT == MVT::isVoid && j != 0 && j != ArgTypes.size()-1) throw "Var arg type not last argument"; - break; } + if (j != ArgTypes.size()-1) + OS << ", "; } - OS << (VarArg ? "-2);\n" : "-1);\n"); + OS << ");\n"; OS << " break;\n"; } OS << " }\n"; @@ -250,51 +270,33 @@ void IntrinsicEmitter::EmitGenerator(const std::vector &Ints, const std::vector &ArgTypes = I->first; unsigned N = ArgTypes.size(); - if (ArgTypes[N-1]->getValueAsString("TypeVal") == "...") { + if (N > 1 && + getValueType(ArgTypes[N-1]->getValueAsDef("VT")) == MVT::isVoid) { OS << " IsVarArg = true;\n"; --N; } + unsigned ArgNo = 0; OS << " ResultTy = "; - EmitTypeGenerate(OS, ArgTypes[0], 0); + EmitTypeGenerate(OS, ArgTypes[0], ArgNo); OS << ";\n"; for (unsigned j = 1; j != N; ++j) { OS << " ArgTys.push_back("; - EmitTypeGenerate(OS, ArgTypes[j], j); + EmitTypeGenerate(OS, ArgTypes[j], ArgNo); OS << ");\n"; } - OS << " break;\n"; } OS << " }\n"; OS << "#endif\n\n"; } -void IntrinsicEmitter::EmitModRefInfo(const std::vector &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 &Ints, std::ostream &OS) { - OS << "// SelectionDAGIsel code.\n"; - OS << "#ifdef GET_NO_MEMORY_INTRINSICS\n"; - OS << " switch (IntrinsicID) {\n"; +EmitAttributes(const std::vector &Ints, std::ostream &OS) { + OS << "// Add parameter attributes that are not common to all intrinsics.\n"; + OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n"; + OS << " switch (id) {\n"; OS << " default: break;\n"; for (unsigned i = 0, e = Ints.size(); i != e; ++i) { switch (Ints[i].ModRef) { @@ -304,28 +306,19 @@ EmitNoMemoryInfo(const std::vector &Ints, std::ostream &OS) { break; } } - OS << " return true; // These intrinsics have no side effects.\n"; - OS << " }\n"; - OS << "#endif\n\n"; -} - -void IntrinsicEmitter:: -EmitSideEffectInfo(const std::vector &Ints, std::ostream &OS){ - OS << "// Return true if doesn't access or only reads memory.\n"; - OS << "#ifdef GET_SIDE_EFFECT_INFO\n"; - OS << " switch (IntrinsicID) {\n"; - OS << " default: break;\n"; + OS << " Attr |= ParamAttr::ReadNone; // These do not access memory.\n"; + OS << " 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 << " Attr |= ParamAttr::ReadOnly; // These do not write memory.\n"; + OS << " break;\n"; OS << " }\n"; OS << "#endif\n\n"; } @@ -346,16 +339,124 @@ EmitGCCBuiltinList(const std::vector &Ints, std::ostream &OS){ OS << "#endif\n\n"; } +/// EmitBuiltinComparisons - Emit comparisons to determine whether the specified +/// sorted range of builtin names is equal to the current builtin. This breaks +/// it down into a simple tree. +/// +/// At this point, we know that all the builtins in the range have the same name +/// for the first 'CharStart' characters. Only the end of the name needs to be +/// discriminated. +typedef std::map::const_iterator StrMapIterator; +static void EmitBuiltinComparisons(StrMapIterator Start, StrMapIterator End, + unsigned CharStart, unsigned Indent, + std::ostream &OS) { + if (Start == End) return; // empty range. + + // Determine what, if anything, is the same about all these strings. + std::string CommonString = Start->first; + unsigned NumInRange = 0; + for (StrMapIterator I = Start; I != End; ++I, ++NumInRange) { + // Find the first character that doesn't match. + const std::string &ThisStr = I->first; + unsigned NonMatchChar = CharStart; + while (NonMatchChar < CommonString.size() && + NonMatchChar < ThisStr.size() && + CommonString[NonMatchChar] == ThisStr[NonMatchChar]) + ++NonMatchChar; + // Truncate off pieces that don't match. + CommonString.resize(NonMatchChar); + } + + // Just compare the rest of the string. + if (NumInRange == 1) { + if (CharStart != CommonString.size()) { + OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName"; + if (CharStart) OS << "+" << CharStart; + OS << ", \"" << (CommonString.c_str()+CharStart) << "\", "; + OS << CommonString.size() - CharStart << "))\n"; + ++Indent; + } + OS << std::string(Indent*2, ' ') << "IntrinsicID = Intrinsic::"; + OS << Start->second << ";\n"; + return; + } + + // At this point, we potentially have a common prefix for these builtins, emit + // a check for this common prefix. + if (CommonString.size() != CharStart) { + OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName"; + if (CharStart) OS << "+" << CharStart; + OS << ", \"" << (CommonString.c_str()+CharStart) << "\", "; + OS << CommonString.size()-CharStart << ")) {\n"; + + EmitBuiltinComparisons(Start, End, CommonString.size(), Indent+1, OS); + OS << std::string(Indent*2, ' ') << "}\n"; + return; + } + + // Output a switch on the character that differs across the set. + OS << std::string(Indent*2, ' ') << "switch (BuiltinName[" << CharStart + << "]) {"; + if (CharStart) + OS << " // \"" << std::string(Start->first.begin(), + Start->first.begin()+CharStart) << "\""; + OS << "\n"; + + for (StrMapIterator I = Start; I != End; ) { + char ThisChar = I->first[CharStart]; + OS << std::string(Indent*2, ' ') << "case '" << ThisChar << "':\n"; + // Figure out the range that has this common character. + StrMapIterator NextChar = I; + for (++NextChar; NextChar != End && NextChar->first[CharStart] == ThisChar; + ++NextChar) + /*empty*/; + EmitBuiltinComparisons(I, NextChar, CharStart+1, Indent+1, OS); + OS << std::string(Indent*2, ' ') << " break;\n"; + I = NextChar; + } + OS << std::string(Indent*2, ' ') << "}\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 &BIM, + std::ostream &OS) { + // Rearrange the builtins by length. + std::vector > BuiltinsByLen; + BuiltinsByLen.reserve(100); + + for (StrMapIterator I = BIM.begin(), E = BIM.end(); I != E; ++I) { + if (I->first.size() >= BuiltinsByLen.size()) + BuiltinsByLen.resize(I->first.size()+1); + BuiltinsByLen[I->first.size()].insert(*I); + } + + // Now that we have all the builtins by their length, emit a switch stmt. + OS << " switch (strlen(BuiltinName)) {\n"; + OS << " default: break;\n"; + for (unsigned i = 0, e = BuiltinsByLen.size(); i != e; ++i) { + if (BuiltinsByLen[i].empty()) continue; + OS << " case " << i << ":\n"; + EmitBuiltinComparisons(BuiltinsByLen[i].begin(), BuiltinsByLen[i].end(), + 0, 3, OS); + OS << " break;\n"; + } + OS << " }\n"; +} + + void IntrinsicEmitter:: EmitIntrinsicToGCCBuiltinMap(const std::vector &Ints, std::ostream &OS) { - typedef std::map, std::string> BIMTy; + typedef std::map > BIMTy; BIMTy BuiltinMap; for (unsigned i = 0, e = Ints.size(); i != e; ++i) { if (!Ints[i].GCCBuiltinName.empty()) { - std::pair Key(Ints[i].GCCBuiltinName, - Ints[i].TargetPrefix); - if (!BuiltinMap.insert(std::make_pair(Key, Ints[i].EnumName)).second) + // Get the map for this target prefix. + std::map &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!"; } @@ -366,19 +467,20 @@ EmitIntrinsicToGCCBuiltinMap(const std::vector &Ints, 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"; + OS << " IntrinsicID = Intrinsic::not_intrinsic;\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 << " "; + if (!I->first.empty()) + OS << "if (!strcmp(TargetPrefix, \"" << I->first << "\")) "; + else + OS << "/* Target Independent Builtins */ "; + OS << "{\n"; + + // Emit the comparisons for this target prefix. + EmitTargetBuiltins(I->second, OS); + OS << " }\n"; } - OS << " else\n"; - OS << " IntrinsicID = Intrinsic::not_intrinsic;\n"; OS << "#endif\n\n"; }