Add the ability to have "Ops" defined as small C++ classes, with some nice
properties:
- They allow type checked dynamic casting from their base Operation.
- They allow nice accessors for C++ clients, e.g. a "getIndex()" method on
'dim' that returns an unsigned.
- They work with both OperationInst/OperationStmt (once OperationStmt is
implemented).
- They get custom printing logic. They will eventually get custom parsing,
verifier, and builder logic as well.
- Out of tree clients can register their own operation set without having to
change MLIR core, e.g. for TensorFlow or custom target instructions.
This registers addf and dim as examples.
PiperOrigin-RevId: 203382993
diff --git a/lib/IR/OperationSet.cpp b/lib/IR/OperationSet.cpp
new file mode 100644
index 0000000..298d0a2
--- /dev/null
+++ b/lib/IR/OperationSet.cpp
@@ -0,0 +1,54 @@
+//===- OperationSet.cpp - OperationSet implementation ---------------------===//
+//
+// Copyright 2019 The MLIR Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// =============================================================================
+
+#include "mlir/IR/OperationSet.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace mlir;
+using llvm::StringMap;
+
+static StringMap<AbstractOperation> &getImpl(void *pImpl) {
+ return *static_cast<StringMap<AbstractOperation> *>(pImpl);
+}
+
+OperationSet::OperationSet() {
+ pImpl = new StringMap<AbstractOperation>();
+}
+
+OperationSet::~OperationSet() {
+ delete &getImpl(pImpl);
+}
+
+void OperationSet::addOperation(StringRef prefix, AbstractOperation opInfo) {
+ assert(opInfo.name.startswith(prefix) && "op name doesn't start with prefix");
+
+ if (!getImpl(pImpl).insert({opInfo.name, opInfo}).second) {
+ llvm::errs() << "error: ops named '" << opInfo.name
+ << "' is already registered.\n";
+ abort();
+ }
+}
+
+/// Look up the specified operation in the operation set and return a pointer
+/// to it if present. Otherwise, return a null pointer.
+const AbstractOperation *OperationSet::lookup(StringRef opName) const {
+ auto &map = getImpl(pImpl);
+ auto it = map.find(opName);
+ if (it != map.end())
+ return &it->second;
+ return nullptr;
+}