clojure "map template" using invokedynamic

clojure 1.8 bytecode

  public static java.lang.Object invokeStatic(java.lang.Object, java.lang.Object, java.lang.Object);
    Code:
       0: bipush        10
       2: anewarray     #13                 // class java/lang/Object
       5: dup
       6: iconst_0
       7: getstatic     #17                 // Field const__0:Lclojure/lang/Keyword;
      10: aastore
      11: dup
      12: iconst_1
      13: aload_0
      14: aconst_null
      15: astore_0
      16: aastore
      17: dup
      18: iconst_2
      19: getstatic     #20                 // Field const__1:Lclojure/lang/Keyword;
      22: aastore
      23: dup
      24: iconst_3
      25: getstatic     #23                 // Field const__2:Lclojure/lang/Keyword;
      28: aastore
      29: dup
      30: iconst_4
      31: getstatic     #26                 // Field const__3:Lclojure/lang/Keyword;
      34: aastore
      35: dup
      36: iconst_5
      37: getstatic     #30                 // Field const__4:Ljava/lang/Object;
      40: aastore
      41: dup
      42: bipush        6
      44: getstatic     #33                 // Field const__5:Lclojure/lang/Keyword;
      47: aastore
      48: dup
      49: bipush        7
      51: aload_1
      52: aconst_null
      53: astore_1
      54: aastore
      55: dup
      56: bipush        8
      58: getstatic     #36                 // Field const__6:Lclojure/lang/Keyword;
      61: aastore
      62: dup
      63: bipush        9
      65: aload_2
      66: aconst_null
      67: astore_2
      68: aastore
      69: invokestatic  #42                 // Method clojure/lang/RT.mapUniqueKeys:([Ljava/lang/Object;)Lclojure/lang/IPersistentMap;
      72: areturn

source

(defn testmap [a b c]
  {:foo a
   :bar :baz
   :biz 42
   :bon b
   :quux c})

templated bytecode

  public static java.lang.Object invokeStatic(java.lang.Object, java.lang.Object, java.lang.Object);
    Code:
       0: aload_0        PUSH ARG A to STACK
       1: aconst_null
       2: astore_0      
       3: getstatic     #15 PUSH  42     // Field const__4:Ljava/lang/Object;  
       6: aload_1        PUSH ARG B to STACK
       7: aconst_null
       8: astore_1
       9: aload_2        PUSH ARG C to STACK
      10: aconst_null
      11: astore_2
      12: invokedynamic #39,  0             // InvokeDynamic #0:kwMap:(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Lclojure/lang/IPersistentMap;
      17: areturn