Move features from passOptions to Module (#2001)

This allows us to emit a (potentially modified) target features
section and conditionally emit other sections such as the DataCount
section based on the presence of features.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/passes/StripTargetFeatures.cpp b/src/passes/StripTargetFeatures.cpp
new file mode 100644
index 000000000..645fbb11c
--- /dev/null
+++ b/src/passes/StripTargetFeatures.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 WebAssembly Community Group participants
+ *
+ * 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.h"
+
+using namespace std;
+
+namespace wasm {
+
+struct StripTargetFeatures : public Pass {
+  void run(PassRunner* runner, Module* module) override {
+    module->hasFeaturesSection = false;
+  }
+};
+
+Pass *createStripTargetFeaturesPass() {
+  return new StripTargetFeatures();
+}
+
+} // namespace wasm