[Bug c++/70594] [6 Regression] -fcompare-debug failure

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70594

--- Comment #42 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I see a difference when tree-ssa-pre.c calls
context.get_dynamic_type (instance, OBJ_TYPE_REF_OBJECT (fn), otr_type, stmt);
in get_dynamic_type, right after the first walk_aliased_vdefs in there, in one
invocation I get:
$16 = {offset = 0, instance = <ssa_name 0x7ffff0ef22d0>, vtbl_ptr_ref =
<component_ref 0x7fffede2e4e0>, 
  otr_type = <record_type 0x7fffef4ec540 CENSORED>, known_current_type = <tree
0x0>, known_current_offset = 0, speculative = 14, 
  type_maybe_changed = false, multiple_types_encountered = false,
seen_unanalyzed_store = true}
and in the other
$15 = {offset = 0, instance = <ssa_name 0x7ffff1052c18>, vtbl_ptr_ref =
<component_ref 0x7fffed95d780>, 
  otr_type = <record_type 0x7fffef6873f0 CENSORED>, known_current_type = <tree
0x0>, known_current_offset = 0, speculative = 13, 
  type_maybe_changed = false, multiple_types_encountered = false,
seen_unanalyzed_store = false}