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//===- TypeID.cpp - MLIR TypeID -------------------------------------------===//
//
// 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 "mlir/Support/TypeID.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/RWMutex.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
using namespace mlir;
#define DEBUG_TYPE "typeid"
//===----------------------------------------------------------------------===//
// TypeID Registry
//===----------------------------------------------------------------------===//
namespace {
struct ImplicitTypeIDRegistry {
/// Lookup or insert a TypeID for the given type name.
TypeID lookupOrInsert(StringRef typeName) {
LLVM_DEBUG(llvm::dbgs() << "ImplicitTypeIDRegistry::lookupOrInsert("
<< typeName << ")\n");
// Perform a heuristic check to see if this type is in an anonymous
// namespace. String equality is not valid for anonymous types, so we try to
// abort whenever we see them.
#ifndef NDEBUG
#if defined(_MSC_VER)
if (typeName.contains("anonymous-namespace")) {
#else
if (typeName.contains("anonymous namespace")) {
#endif
std::string errorStr;
{
llvm::raw_string_ostream errorOS(errorStr);
errorOS << "TypeID::get<" << typeName
<< ">(): Using TypeID on a class with an anonymous "
"namespace requires an explicit TypeID definition. The "
"implicit fallback uses string name, which does not "
"guarantee uniqueness in anonymous contexts. Define an "
"explicit TypeID instantiation for this type using "
"`MLIR_DECLARE_EXPLICIT_TYPE_ID`/"
"`MLIR_DEFINE_EXPLICIT_TYPE_ID` or "
"`MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID`.\n";
}
llvm::report_fatal_error(errorStr);
}
#endif
{ // Try a read-only lookup first.
llvm::sys::SmartScopedReader<true> guard(mutex);
auto it = typeNameToID.find(typeName);
if (it != typeNameToID.end())
return it->second;
}
llvm::sys::SmartScopedWriter<true> guard(mutex);
auto it = typeNameToID.try_emplace(typeName, TypeID());
if (it.second)
it.first->second = typeIDAllocator.allocate();
return it.first->second;
}
/// A mutex that guards access to the registry.
llvm::sys::SmartRWMutex<true> mutex;
/// An allocator used for TypeID objects.
TypeIDAllocator typeIDAllocator;
/// A map type name to TypeID.
DenseMap<StringRef, TypeID> typeNameToID;
};
} // end namespace
TypeID detail::FallbackTypeIDResolver::registerImplicitTypeID(StringRef name) {
static ImplicitTypeIDRegistry registry;
return registry.lookupOrInsert(name);
}
//===----------------------------------------------------------------------===//
// Builtin TypeIDs
//===----------------------------------------------------------------------===//
MLIR_DEFINE_EXPLICIT_TYPE_ID(void)
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