   0  getfield_gc_r %r0, FieldDescr<pypy.module.__pypy__.interp_builders.W_UnicodeBuilder.inst_builder> -> %r1
   5  getfield_gc_r %r1, FieldDescr<rpython.rlib.rutf8.Utf8StringBuilder.inst__s> -> %r2
  10  ref_isvirtual %r2 -> %i0
  13  -live- %i0, %r0, %r2
  13  goto_if_not %i0, L1
  17  getfield_gc_r %r2, FieldDescr<stringbuilder.extra_pieces> -> %r1
  22  -live- %r0, %r1, %r2
  22  goto_if_not_ptr_nonzero %r1, L2
  26  residual_call_r_v $<* fn ll_fold_pieces__stringbuilderPtr>, R[%r2], <CallDescr(r) EF=5>
  32  -live- %r0, %r2
  32  L3:
  32  getfield_gc_r %r2, FieldDescr<stringbuilder.current_buf> -> %r1
  37  L4:
  37  getfield_gc_r %r0, FieldDescr<pypy.module.__pypy__.interp_builders.W_UnicodeBuilder.inst_builder> -> %r0
  42  getfield_gc_i %r0, FieldDescr<rpython.rlib.rutf8.Utf8StringBuilder.inst__lgt> -> %i0
  47  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000000017400aaa0> -> %r0
  51  setfield_gc_r %r0, %r1, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__utf8>
  56  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__length>
  61  setfield_gc_r %r0, $<* None>, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__index_storage>
  66  ref_return %r0
  68  ---
  68  L2:
  68  getfield_gc_i %r2, FieldDescr<stringbuilder.current_pos> -> %i0
  73  getfield_gc_i %r2, FieldDescr<stringbuilder.total_size> -> %i1
  78  -live- %i0, %i1, %r0, %r2
  78  goto_if_not_int_ne %i0, %i1, L5
  83  getfield_gc_r %r2, FieldDescr<stringbuilder.current_buf> -> %r1
  88  residual_call_ir_r $<* fn ll_shrink_array__rpy_stringPtr_Signed>, I[%i0], R[%r1], <CallDescr(ri) EF=5 OS_SHRINK_ARRAY> -> %r1
  97  -live- %i0, %r0, %r1, %r2
  97  setfield_gc_r %r2, %r1, FieldDescr<stringbuilder.current_buf>
 102  setfield_gc_i %r2, %i0, FieldDescr<stringbuilder.current_end>
 107  setfield_gc_i %r2, %i0, FieldDescr<stringbuilder.total_size>
 112  goto L3
 115  ---
 115  L5:
 115  goto L3
 118  ---
 118  L1:
 118  residual_call_r_r $<* fn ll_build_trampoline__v1269___simple_call__function_>, R[%r2], <CallDescr(r) EF=5> -> %r1
 125  -live- %r0, %r1
 125  goto L4
