//
//===----------------------------------------------------------------------===//
+#include "CodeGenTarget.h"
#include "IntrinsicEmitter.h"
#include "Record.h"
#include "llvm/ADT/StringExtras.h"
// Emit the intrinsic verifier.
EmitVerifier(Ints, OS);
- // Emit mod/ref info for each function.
- EmitModRefInfo(Ints, OS);
+ // Emit the intrinsic declaration generator.
+ EmitGenerator(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);
EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS) {
// Build a function name -> intrinsic name mapping.
- std::map<std::string, std::string> IntMapping;
+ std::map<std::string, unsigned> IntMapping;
for (unsigned i = 0, e = Ints.size(); i != e; ++i)
- IntMapping[Ints[i].Name] = Ints[i].EnumName;
+ IntMapping[Ints[i].Name] = i;
OS << "// Function name -> enum value recognizer code.\n";
OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
OS << " switch (Name[5]) {\n";
- OS << " default: break;\n";
+ OS << " default:\n";
// Emit the intrinsics in sorted order.
char LastChar = 0;
- for (std::map<std::string, std::string>::iterator I = IntMapping.begin(),
+ for (std::map<std::string, unsigned>::iterator I = IntMapping.begin(),
E = IntMapping.end(); I != E; ++I) {
if (I->first[5] != LastChar) {
LastChar = I->first[5];
+ OS << " break;\n";
OS << " case '" << LastChar << "':\n";
}
- OS << " if (Name == \"" << I->first << "\") return Intrinsic::"
- << I->second << ";\n";
+ // 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() + 1) << ")) return Intrinsic::"
+ << Ints[I->second].EnumName << ";\n";
+ else
+ OS << " if (Len == " << I->first.size()
+ << " && !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";
}
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";
+static void EmitTypeForValueType(std::ostream &OS, MVT::ValueType VT) {
+ if (MVT::isInteger(VT)) {
+ unsigned BitWidth = MVT::getSizeInBits(VT);
+ 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<const Type *>())";
+ } 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!");
+ }
+}
+
+static void EmitTypeGenerate(std::ostream &OS, Record *ArgType,
+ unsigned &ArgNo) {
+ MVT::ValueType VT = getValueType(ArgType->getValueAsDef("VT"));
- // 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";
+ 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::isVector(VT)) {
+ OS << "VectorType::get(";
+ EmitTypeForValueType(OS, MVT::getVectorElementType(VT));
+ OS << ", " << MVT::getVectorNumElements(VT) << ")";
+ } else if (VT == MVT::iPTR) {
+ OS << "PointerType::getUnqual(";
+ EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
+ OS << ")";
+ } else if (VT == MVT::isVoid) {
+ if (ArgNo == 0)
+ OS << "Type::VoidTy";
+ else
+ // MVT::isVoid is used to mean varargs here.
+ OS << "...";
+ } else {
+ EmitTypeForValueType(OS, VT);
}
}
+/// RecordListComparator - Provide a determinstic comparator for lists of
+/// records.
+namespace {
+ struct RecordListComparator {
+ bool operator()(const std::vector<Record*> &LHS,
+ const std::vector<Record*> &RHS) const {
+ unsigned i = 0;
+ do {
+ if (i == RHS.size()) return false; // RHS is shorter than LHS.
+ if (LHS[i] != RHS[i])
+ return LHS[i]->getName() < RHS[i]->getName();
+ } while (++i != LHS.size());
+
+ return i != RHS.size();
+ }
+ };
+}
+
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]);
+
+ // 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<std::vector<Record*>, std::vector<unsigned>,
+ RecordListComparator> MapTy;
+ MapTy UniqueArgInfos;
+
+ // Compute the unique argument type info.
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i)
+ UniqueArgInfos[Ints[i].ArgTypeDefs].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 std::vector<Record*> &ArgTypes = I->first;
+ OS << " VerifyIntrinsicPrototype(ID, IF, " << ArgTypes.size() << ", ";
+ for (unsigned j = 0; j != ArgTypes.size(); ++j) {
+ Record *ArgType = ArgTypes[j];
+ if (ArgType->isSubClassOf("LLVMMatchType")) {
+ unsigned Number = ArgType->getValueAsInt("Number");
+ assert(Number < j && "Invalid matching number!");
+ OS << "~" << Number;
+ } else {
+ MVT::ValueType 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";
+ }
+ if (j != ArgTypes.size()-1)
+ OS << ", ";
+ }
+
+ OS << ");\n";
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;
+void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
+ std::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<std::vector<Record*>, std::vector<unsigned>,
+ RecordListComparator> MapTy;
+ MapTy UniqueArgInfos;
+
+ // Compute the unique argument type info.
+ for (unsigned i = 0, e = Ints.size(); i != e; ++i)
+ UniqueArgInfos[Ints[i].ArgTypeDefs].push_back(i);
+
+ // Loop through the array, emitting one generator 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 std::vector<Record*> &ArgTypes = I->first;
+ unsigned N = ArgTypes.size();
+
+ 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], ArgNo);
+ OS << ";\n";
+
+ for (unsigned j = 1; j != N; ++j) {
+ OS << " ArgTys.push_back(";
+ EmitTypeGenerate(OS, ArgTypes[j], ArgNo);
+ OS << ");\n";
}
+ OS << " break;\n";
}
+ OS << " }\n";
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";
+EmitAttributes(const std::vector<CodeGenIntrinsic> &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) {
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";
+ 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";
}
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