1 files changed, 40 insertions, 0 deletions
diff --git a/deps/v8/src/wasm/wasm-features.cc b/deps/v8/src/wasm/wasm-features.cc
new file mode 100644
index 0000000000..6271fd0506
--- /dev/null
+++ b/deps/v8/src/wasm/wasm-features.cc
@@ -0,0 +1,40 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/wasm/wasm-features.h"
+#include "src/flags.h"
+#include "src/handles-inl.h"
+#include "src/isolate.h"
+
+namespace v8 {
+namespace internal {
+namespace wasm {
+
+#define COMMA ,
+#define SPACE
+#define DO_UNION(feat, desc, val) dst->feat |= src.feat;
+#define FLAG_REF(feat, desc, val) FLAG_experimental_wasm_##feat
+
+void UnionFeaturesInto(WasmFeatures* dst, const WasmFeatures& src) {
+  FOREACH_WASM_FEATURE(DO_UNION, SPACE);
+}
+
+WasmFeatures WasmFeaturesFromFlags() {
+  return WasmFeatures{FOREACH_WASM_FEATURE(FLAG_REF, COMMA)};
+}
+
+WasmFeatures WasmFeaturesFromIsolate(Isolate* isolate) {
+  WasmFeatures features = WasmFeaturesFromFlags();
+  features.threads |=
+      isolate->AreWasmThreadsEnabled(handle(isolate->context(), isolate));
+  return features;
+}
+
+#undef DO_UNION
+#undef FLAG_REF
+#undef SPACE
+#undef COMMA
+}  // namespace wasm
+}  // namespace internal
+}  // namespace v8