[Bug middle-end/79399] GCC fails to compile big source at -O0

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79399

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40684
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40684&action=edit
gcc7-pr79399.patch

Indeed.