[Bug regression/81331] [8 Regression] FAIL: 21_strings/basic_string/modifiers/insert/char/1.cc execution test

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81331

--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Created attachment 41766
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41766&action=edit
Patch I am testing

Hi,
this patch adds sanity check that turns the nasty wrong code issue into ICE and
a hack to bb-reorder that should prevent it from placing EH landing pads very
first.  I am not quite sure this is robust enough, but can't think of better
fix. We may end up outputting extra NOP in case we fail to find right order.

Honza