1 files changed, 53 insertions, 0 deletions
diff --git a/mlir/lib/Analysis/Pass.cpp b/mlir/lib/Analysis/Pass.cpp
new file mode 100644
index 00000000000..1249c18c07e
--- /dev/null
+++ b/mlir/lib/Analysis/Pass.cpp
@@ -0,0 +1,53 @@
+//===- Pass.cpp - Pass infrastructure 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.
+// =============================================================================
+//
+// This file implements common pass infrastructure.
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Pass.h"
+#include "mlir/IR/CFGFunction.h"
+#include "mlir/IR/MLFunction.h"
+#include "mlir/IR/Module.h"
+using namespace mlir;
+
+/// Out of line virtual method to ensure vtables and metadata are emitted to a
+/// single .o file.
+void Pass::anchor() {}
+
+/// Out of line virtual method to ensure vtables and metadata are emitted to a
+/// single .o file.
+void ModulePass::anchor() {}
+
+/// Function passes walk a module and look at each function with their
+/// corresponding hooks and terminates upon error encountered.
+PassResult FunctionPass::runOnModule(Module *m) {
+  for (auto &fn : *m) {
+    if (runOnFunction(&fn))
+      return failure();
+  }
+  return success();
+}
+
+PassResult FunctionPass::runOnFunction(Function *fn) {
+  if (auto *mlFunc = dyn_cast<MLFunction>(fn))
+    return runOnMLFunction(mlFunc);
+  if (auto *cfgFunc = dyn_cast<CFGFunction>(fn))
+    return runOnCFGFunction(cfgFunc);
+
+  return success();
+}