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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 emitTargetIndependentNames(raw_ostream &OS);
void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
RecordKeeper &Records;
};
} // End anonymous namespace.
void Attributes::emitTargetIndependentNames(raw_ostream &OS) {
OS << "#ifdef GET_ATTR_NAMES\n";
OS << "#undef GET_ATTR_NAMES\n";
OS << "#ifndef ATTRIBUTE_ALL\n";
OS << "#define ATTRIBUTE_ALL(FIRST, SECOND)\n";
OS << "#endif\n\n";
auto Emit = [&](ArrayRef<StringRef> KindNames, StringRef MacroName) {
OS << "#ifndef " << MacroName << "\n";
OS << "#define " << MacroName
<< "(FIRST, SECOND) ATTRIBUTE_ALL(FIRST, SECOND)\n";
OS << "#endif\n\n";
for (StringRef KindName : KindNames) {
for (auto A : Records.getAllDerivedDefinitions(KindName)) {
OS << MacroName << "(" << A->getName() << ","
<< A->getValueAsString("AttrString") << ")\n";
}
}
OS << "#undef " << MacroName << "\n\n";
};
// Emit attribute enums in the same order llvm::Attribute::operator< expects.
Emit({"EnumAttr", "TypeAttr", "IntAttr"}, "ATTRIBUTE_ENUM");
Emit({"StrBoolAttr"}, "ATTRIBUTE_STRBOOL");
OS << "#undef ATTRIBUTE_ALL\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 << "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::emit(raw_ostream &OS) {
emitTargetIndependentNames(OS);
emitFnAttrCompatCheck(OS, false);
}
namespace llvm {
void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
Attributes(RK).emit(OS);
}
} // End llvm namespace.
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