[Bug target/81285] [8 Regression] r249888 breaks bootstrap on ppc64le

["hubicka at ucw dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81285

--- Comment #4 from Jan Hubicka <hubicka at ucw dot cz> ---
> ../../../gcc/libgcc/libgcov-driver.c: In function ‘gcov_do_dump’:
> ../../../gcc/libgcc/libgcov-driver.c:853:1: error: verify_flow_info:
> REG_BR_PROB is set but cfg probability is not
>  }
>  ^
> during RTL pass: loop2_doloop
> ../../../gcc/libgcc/libgcov-driver.c:853:1: internal compiler error:
> verify_flow_info failed
> 0x1039eeb3 verify_flow_info()
>         ../../gcc/gcc/cfghooks.c:259
> 0x107fc44b execute_function_todo
>         ../../gcc/gcc/passes.c:2001
> 0x107fd183 do_per_function
>         ../../gcc/gcc/passes.c:1655
> 0x107fd403 execute_todo

I suppose loop-doloop.c:add_test needs to maintain profile.
Let me see if I can reproduce it in a cross compiler.

Honza