   0  int_isconstant %i0 -> %i1
   3  -live- %i0, %i1, %r0
   3  goto_if_not %i1, L1
   7  ref_isvirtual %r0 -> %i1
  10  -live- %i0, %i1, %r0
  10  goto_if_not %i1, L2
  14  newstr %i0 -> %r1
  17  int_copy $0 -> %i2
  20  L3:
  20  -live- %i0, %i2, %r0, %r1
  20  goto_if_not_int_lt %i2, %i0, L4
  25  getarrayitem_gc_i %r0, %i2, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x100923c0d10> -> %i1
  31  strsetitem %r1, %i2, %i1
  35  int_add %i2, $1 -> %i2
  39  goto L3
  42  ---
  42  L4:
  42  ref_return %r1
  44  ---
  44  L2:
  44  L5:
  44  residual_call_ir_r $<* fn ll_join_chars_trampoline__v1346___simple_call__function_>, I[%i0], R[%r0], <CallDescr(ir) EF=5> -> %r1
  53  -live- %r1
  53  ref_return %r1
  55  ---
  55  L1:
  55  goto L5
