Add box_u to both JITs and unbox_i to the template JIT.

src/jit/core_templates.expr

@@ -892,6 +892,13 @@
       (carg $2 ptr)
       (carg $1 int)) ptr_sz))
 
+(template: box_u
+  (call (^func &MVM_repr_box_uint)
+    (arglist
+      (carg (tc) ptr)
+      (carg $2 ptr)
+      (carg $1 int)) ptr_sz))
+
 (template: box_s
   (call (^func &MVM_repr_box_str)
     (arglist
@@ -905,6 +912,14 @@
       (carg (tc) ptr)
       (carg $1 ptr)) ptr_sz))
 
+(template: unbox_i
+  (call (^getf (^repr $1) MVMREPROps box_funcs.get_int)
+    (arglist
+      (carg (tc) ptr)
+      (carg (^stable $1) ptr)
+      (carg $1 ptr)
+      (carg (^body $1) ptr)) int_sz))
+
 (template: unbox_u
   (call (^getf (^repr $1) MVMREPROps box_funcs.get_uint)
     (arglist

src/jit/graph.c

@@ -152,6 +152,7 @@ static void * op_to_func(MVMThreadContext *tc, MVMint16 opcode) {
     case MVM_OP_smrt_strify: return MVM_coerce_smart_stringify;
     case MVM_OP_gethow: return MVM_6model_get_how_obj;
     case MVM_OP_box_i: return MVM_repr_box_int;
+    case MVM_OP_box_u: return MVM_repr_box_uint;
     case MVM_OP_box_s: return MVM_repr_box_str;
     case MVM_OP_box_n: return MVM_repr_box_num;
     case MVM_OP_unbox_i: return MVM_repr_get_int;
@@ -862,6 +863,7 @@ static MVMint32 consume_reprop(MVMThreadContext *tc, MVMJitGraph *jg,
             type_operand = ins->operands[1];
             break;
         case MVM_OP_box_i:
+        case MVM_OP_box_u:
         case MVM_OP_box_n:
         case MVM_OP_box_s:
             type_operand = ins->operands[2];
@@ -2939,7 +2941,8 @@ static MVMint32 consume_ins(MVMThreadContext *tc, MVMJitGraph *jg,
         break;
     }
     case MVM_OP_box_s:
-    case MVM_OP_box_i: {
+    case MVM_OP_box_i:
+    case MVM_OP_box_u: {
         MVMint16 dst = ins->operands[0].reg.orig;
         MVMint16 val = ins->operands[1].reg.orig;
         MVMint16 type = ins->operands[2].reg.orig;