1 files changed, 12 insertions, 0 deletions
diff --git a/compiler/utils/growable_array.h b/compiler/utils/growable_array.h
index fde65e79c3..b84842910b 100644
--- a/compiler/utils/growable_array.h
+++ b/compiler/utils/growable_array.h
@@ -37,6 +37,18 @@ class GrowableArray : public ArenaObject<kArenaAllocGrowableArray> {
                                                  kArenaAllocGrowableArray));
     }
 
+    GrowableArray(ArenaAllocator* arena, size_t init_length, T initial_data)
+      : arena_(arena),
+        num_allocated_(init_length),
+        num_used_(0) {
+      SetSize(init_length);
+      elem_list_ = static_cast<T*>(arena_->Alloc(sizeof(T) * init_length,
+                                                 kArenaAllocGrowableArray));
+      for (size_t i = 0; i < init_length; ++i) {
+        elem_list_[i] = initial_data;
+      }
+    }
+
 
     // Expand the list size to at least new length.
     void Resize(size_t new_length) {