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diff --git a/src/ir/table-utils.h b/src/ir/table-utils.h
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+/*
+ * 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.
+ */
+
+#ifndef wasm_ir_table_h
+#define wasm_ir_table_h
+
+#include "wasm.h"
+#include "wasm-traversal.h"
+
+namespace wasm {
+
+struct FlatTable {
+  std::vector<Name> names;
+  bool valid;
+
+  FlatTable(Table& table) {
+    valid = true;
+    for (auto& segment : table.segments) {
+      auto offset = segment.offset;
+      if (!offset->is<Const>()) {
+        // TODO: handle some non-constant segments
+        valid = false;
+        return;
+      }
+      Index start = offset->cast<Const>()->value.geti32();
+      Index end = start + segment.data.size();
+      if (end > names.size()) {
+        names.resize(end);
+      }
+      for (Index i = 0; i < segment.data.size(); i++) {
+        names[start + i] = segment.data[i];
+      }
+    }
+  }
+};
+
+} // namespace wasm
+
+#endif // wasm_ir_table_h