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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/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include <vector>
using namespace llvm;
#define DEBUG_TYPE "attr-enum"
namespace {
class Attributes {
public:
Attributes(RecordKeeper &R) : Records(R) {}
void run(raw_ostream &OS);
private:
void emitTargetIndependentNames(raw_ostream &OS);
void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
void emitAttributeProperties(raw_ostream &OF);
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");
Emit({"ComplexStrAttr"}, "ATTRIBUTE_COMPLEXSTR");
OS << "#undef ATTRIBUTE_ALL\n";
OS << "#endif\n\n";
OS << "#ifdef GET_ATTR_ENUM\n";
OS << "#undef GET_ATTR_ENUM\n";
unsigned Value = 1; // Leave zero for AttrKind::None.
for (StringRef KindName : {"EnumAttr", "TypeAttr", "IntAttr"}) {
OS << "First" << KindName << " = " << Value << ",\n";
for (auto *A : Records.getAllDerivedDefinitions(KindName)) {
OS << A->getName() << " = " << Value << ",\n";
Value++;
}
OS << "Last" << KindName << " = " << (Value - 1) << ",\n";
}
OS << "#endif\n\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";
StringRef AttrName = Rule->getValueAsString("AttrName");
if (!AttrName.empty())
OS << ", \"" << AttrName << "\"";
OS << ");\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::emitAttributeProperties(raw_ostream &OS) {
OS << "#ifdef GET_ATTR_PROP_TABLE\n";
OS << "#undef GET_ATTR_PROP_TABLE\n";
OS << "static const uint8_t AttrPropTable[] = {\n";
for (StringRef KindName : {"EnumAttr", "TypeAttr", "IntAttr"}) {
for (auto *A : Records.getAllDerivedDefinitions(KindName)) {
OS << "0";
for (Init *P : *A->getValueAsListInit("Properties"))
OS << " | AttributeProperty::" << cast<DefInit>(P)->getDef()->getName();
OS << ",\n";
}
}
OS << "};\n";
OS << "#endif\n";
}
void Attributes::run(raw_ostream &OS) {
emitTargetIndependentNames(OS);
emitFnAttrCompatCheck(OS, false);
emitAttributeProperties(OS);
}
static TableGen::Emitter::OptClass<Attributes> X("gen-attrs",
"Generate attributes");
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