1 files changed, 14 insertions, 0 deletions
diff --git a/runtime/mirror/string-inl.h b/runtime/mirror/string-inl.h
index 66e0ef0bdb..0d18b78044 100644
--- a/runtime/mirror/string-inl.h
+++ b/runtime/mirror/string-inl.h
@@ -67,6 +67,20 @@ int32_t String::FastIndexOf(MemoryType* chars, int32_t ch, int32_t start) {
   return -1;
 }
 
+template <typename MemoryType>
+int32_t String::LastIndexOf(MemoryType* chars, int32_t ch, int32_t from_index) {
+  DCHECK_LT(from_index, GetLength());
+  const MemoryType* start = chars;
+  const MemoryType* p = chars + from_index;
+  while (p >= start) {
+    if (*p == ch) {
+      return p - chars;
+    }
+    p--;
+  }
+  return -1;
+}
+
 inline int32_t String::ComputeHashCode() {
   uint32_t hash = IsCompressed()
       ? ComputeUtf16Hash(GetValueCompressed(), GetLength())