Change interface of Pass::Process() to return possible failures.

1 files changed, 35 insertions, 0 deletions

diff --git a/source/opt/pass_manager.cpp b/source/opt/pass_manager.cpp
new file mode 100644
index 00000000..18267db6
--- /dev/null
+++ b/source/opt/pass_manager.cpp
@@ -0,0 +1,35 @@
+// Copyright (c) 2016 Google Inc.
+//
+// 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 "pass_manager.h"
+
+namespace spvtools {
+namespace opt {
+
+Pass::Status PassManager::Run(ir::Module* module) {
+  auto status = Pass::Status::SuccessWithoutChange;
+  for (const auto& pass : passes_) {
+    const auto one_status = pass->Process(module);
+    if (one_status == Pass::Status::Failure) return one_status;
+    if (one_status == Pass::Status::SuccessWithChange) status = one_status;
+  }
+  // Set the Id bound in the header in case a pass forgot to do so.
+  if (status == Pass::Status::SuccessWithChange) {
+    module->SetIdBound(module->ComputeIdBound());
+  }
+  return status;
+}
+
+}  // namespace opt
+}  // namespace spvtools