Attributes.cpp
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//===- Attributes.cpp - Generate attributes -------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/TableGen/Record.h"
#include <algorithm>
#include <string>
#include <vector>
using namespace llvm;
#define DEBUG_TYPE "attr-enum"
namespace {
class Attributes {
public:
Attributes(RecordKeeper &R) : Records(R) {}
void emit(raw_ostream &OS);
private:
void emitTargetIndependentEnums(raw_ostream &OS);
void emitConversionFn(raw_ostream &OS);
void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
void printEnumAttrClasses(raw_ostream &OS,
const std::vector<Record *> &Records);
void printStrBoolAttrClasses(raw_ostream &OS,
const std::vector<Record *> &Records);
RecordKeeper &Records;
};
} // End anonymous namespace.
void Attributes::emitTargetIndependentEnums(raw_ostream &OS) {
OS << "#ifdef GET_ATTR_ENUM\n";
OS << "#undef GET_ATTR_ENUM\n";
std::vector<Record*> Attrs =
Records.getAllDerivedDefinitions("EnumAttr");
for (auto A : Attrs)
OS << A->getName() << ",\n";
OS << "#endif\n";
}
void Attributes::emitConversionFn(raw_ostream &OS) {
OS << "#ifdef GET_ATTR_KIND_FROM_NAME\n";
OS << "#undef GET_ATTR_KIND_FROM_NAME\n";
std::vector<Record*> Attrs =
Records.getAllDerivedDefinitions("EnumAttr");
OS << "static Attribute::AttrKind getAttrKindFromName(StringRef AttrName) {\n";
OS << " return StringSwitch<Attribute::AttrKind>(AttrName)\n";
for (auto A : Attrs) {
OS << " .Case(\"" << A->getValueAsString("AttrString");
OS << "\", Attribute::" << A->getName() << ")\n";
}
OS << " .Default(Attribute::None);\n";
OS << "}\n\n";
OS << "#endif\n";
}
void Attributes::emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr) {
OS << "#ifdef GET_ATTR_COMPAT_FUNC\n";
OS << "#undef GET_ATTR_COMPAT_FUNC\n";
OS << "struct EnumAttr {\n";
OS << " static bool isSet(const Function &Fn,\n";
OS << " Attribute::AttrKind Kind) {\n";
OS << " return Fn.hasFnAttribute(Kind);\n";
OS << " }\n\n";
OS << " static void set(Function &Fn,\n";
OS << " Attribute::AttrKind Kind, bool Val) {\n";
OS << " if (Val)\n";
OS << " Fn.addFnAttr(Kind);\n";
OS << " else\n";
OS << " Fn.removeFnAttr(Kind);\n";
OS << " }\n";
OS << "};\n\n";
OS << "struct StrBoolAttr {\n";
OS << " static bool isSet(const Function &Fn,\n";
OS << " StringRef Kind) {\n";
OS << " auto A = Fn.getFnAttribute(Kind);\n";
OS << " return A.getValueAsString().equals(\"true\");\n";
OS << " }\n\n";
OS << " static void set(Function &Fn,\n";
OS << " StringRef Kind, bool Val) {\n";
OS << " Fn.addFnAttr(Kind, Val ? \"true\" : \"false\");\n";
OS << " }\n";
OS << "};\n\n";
printEnumAttrClasses(OS ,Records.getAllDerivedDefinitions("EnumAttr"));
printStrBoolAttrClasses(OS , Records.getAllDerivedDefinitions("StrBoolAttr"));
OS << "static inline bool hasCompatibleFnAttrs(const Function &Caller,\n"
<< " const Function &Callee) {\n";
OS << " bool Ret = true;\n\n";
std::vector<Record *> CompatRules =
Records.getAllDerivedDefinitions("CompatRule");
for (auto *Rule : CompatRules) {
StringRef FuncName = Rule->getValueAsString("CompatFunc");
OS << " Ret &= " << FuncName << "(Caller, Callee);\n";
}
OS << "\n";
OS << " return Ret;\n";
OS << "}\n\n";
std::vector<Record *> MergeRules =
Records.getAllDerivedDefinitions("MergeRule");
OS << "static inline void mergeFnAttrs(Function &Caller,\n"
<< " const Function &Callee) {\n";
for (auto *Rule : MergeRules) {
StringRef FuncName = Rule->getValueAsString("MergeFunc");
OS << " " << FuncName << "(Caller, Callee);\n";
}
OS << "}\n\n";
OS << "#endif\n";
}
void Attributes::printEnumAttrClasses(raw_ostream &OS,
const std::vector<Record *> &Records) {
OS << "// EnumAttr classes\n";
for (const auto *R : Records) {
OS << "struct " << R->getName() << "Attr : EnumAttr {\n";
OS << " static enum Attribute::AttrKind getKind() {\n";
OS << " return llvm::Attribute::" << R->getName() << ";\n";
OS << " }\n";
OS << "};\n";
}
OS << "\n";
}
void Attributes::printStrBoolAttrClasses(raw_ostream &OS,
const std::vector<Record *> &Records) {
OS << "// StrBoolAttr classes\n";
for (const auto *R : Records) {
OS << "struct " << R->getName() << "Attr : StrBoolAttr {\n";
OS << " static StringRef getKind() {\n";
OS << " return \"" << R->getValueAsString("AttrString") << "\";\n";
OS << " }\n";
OS << "};\n";
}
OS << "\n";
}
void Attributes::emit(raw_ostream &OS) {
emitTargetIndependentEnums(OS);
emitConversionFn(OS);
emitFnAttrCompatCheck(OS, false);
}
namespace llvm {
void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
Attributes(RK).emit(OS);
}
} // End llvm namespace.