Fix StoreIndexedInstr input representation requirements for Int32/Uint32 arrays.

runtime/vm/assembler_ia32.h

Index: runtime/vm/assembler_ia32.h
diff --git a/runtime/vm/assembler_ia32.h b/runtime/vm/assembler_ia32.h
index 6201cae2ba83b8f26a812172ca4b61044bda2812..30fc20126ad21f59aefed48d5af4ead0cd07dbb2 100644
--- a/runtime/vm/assembler_ia32.h
+++ b/runtime/vm/assembler_ia32.h
@@ -697,6 +697,11 @@ class Assembler : public ValueObject {
   void LoadTaggedClassIdMayBeSmi(Register result,
                                  Register object);
 
+  void SmiUntagOrCheckClass(Register object,
+                            intptr_t class_id,
+                            Register scratch,
+                            Label* is_smi);
+
   static Address ElementAddressForIntIndex(bool is_external,
                                            intptr_t cid,
                                            intptr_t index_scale,