1 files changed, 54 insertions, 0 deletions
diff --git a/deps/v8/src/roots.cc b/deps/v8/src/roots.cc
new file mode 100644
index 0000000000..529d2ec472
--- /dev/null
+++ b/deps/v8/src/roots.cc
@@ -0,0 +1,54 @@
+// 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/roots.h"
+#include "src/elements-kind.h"
+
+namespace v8 {
+namespace internal {
+
+// static
+RootIndex RootsTable::RootIndexForFixedTypedArray(
+    ExternalArrayType array_type) {
+  switch (array_type) {
+#define ARRAY_TYPE_TO_ROOT_INDEX(Type, type, TYPE, ctype) \
+  case kExternal##Type##Array:                            \
+    return RootIndex::kFixed##Type##ArrayMap;
+
+    TYPED_ARRAYS(ARRAY_TYPE_TO_ROOT_INDEX)
+#undef ARRAY_TYPE_TO_ROOT_INDEX
+  }
+  UNREACHABLE();
+}
+
+// static
+RootIndex RootsTable::RootIndexForFixedTypedArray(ElementsKind elements_kind) {
+  switch (elements_kind) {
+#define TYPED_ARRAY_CASE(Type, type, TYPE, ctype) \
+  case TYPE##_ELEMENTS:                           \
+    return RootIndex::kFixed##Type##ArrayMap;
+    TYPED_ARRAYS(TYPED_ARRAY_CASE)
+    default:
+      UNREACHABLE();
+#undef TYPED_ARRAY_CASE
+  }
+}
+
+// static
+RootIndex RootsTable::RootIndexForEmptyFixedTypedArray(
+    ElementsKind elements_kind) {
+  switch (elements_kind) {
+#define ELEMENT_KIND_TO_ROOT_INDEX(Type, type, TYPE, ctype) \
+  case TYPE##_ELEMENTS:                                     \
+    return RootIndex::kEmptyFixed##Type##Array;
+
+    TYPED_ARRAYS(ELEMENT_KIND_TO_ROOT_INDEX)
+#undef ELEMENT_KIND_TO_ROOT_INDEX
+    default:
+      UNREACHABLE();
+  }
+}
+
+}  // namespace internal
+}  // namespace v8