   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
  16  goto_if_not %i0, L1
  20  getfield_gc_r %r2, FieldDescr<stringbuilder.extra_pieces> -> %r1
  25  -live- %r0, %r1, %r2
  28  goto_if_not_ptr_nonzero %r1, L2
  32  residual_call_r_v $<* fn ll_fold_pieces__stringbuilderPtr>, R[%r2], <CallDescr(r) EF=5>
  38  L3:
  38  -live- %r0, %r2
  41  getfield_gc_r %r2, FieldDescr<stringbuilder.current_buf> -> %r1
  46  L4:
  46  getfield_gc_r %r0, FieldDescr<pypy.module.__pypy__.interp_builders.W_UnicodeBuilder.inst_builder> -> %r0
  51  getfield_gc_i %r0, FieldDescr<rpython.rlib.rutf8.Utf8StringBuilder.inst__lgt> -> %i0
  56  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000555aaf9d4100> -> %r0
  60  setfield_gc_r %r0, %r1, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__utf8>
  65  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__length>
  70  setfield_gc_r %r0, $<* None>, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__index_storage>
  75  ref_return %r0
  77  ---
  77  L2:
  77  getfield_gc_i %r2, FieldDescr<stringbuilder.current_pos> -> %i0
  82  getfield_gc_i %r2, FieldDescr<stringbuilder.total_size> -> %i1
  87  -live- %i0, %i1, %r0, %r2
  90  goto_if_not_int_ne %i0, %i1, L5
  95  getfield_gc_r %r2, FieldDescr<stringbuilder.current_buf> -> %r1
 100  residual_call_ir_r $<* fn ll_shrink_array__rpy_stringPtr_Signed>, I[%i0], R[%r1], <CallDescr(ri) EF=5 OS_SHRINK_ARRAY> -> %r1
 109  -live- %i0, %r0, %r1, %r2
 112  setfield_gc_r %r2, %r1, FieldDescr<stringbuilder.current_buf>
 117  setfield_gc_i %r2, %i0, FieldDescr<stringbuilder.current_end>
 122  setfield_gc_i %r2, %i0, FieldDescr<stringbuilder.total_size>
 127  goto L3
 130  ---
 130  L5:
 130  goto L3
 133  ---
 133  L1:
 133  residual_call_r_r $<* fn ll_build_trampoline__v1841___simple_call__function_>, R[%r2], <CallDescr(r) EF=5> -> %r1
 140  -live- %r0, %r1
 143  goto L4
