[Bug c++/70641] [5/6 Regression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70641

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 38254
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38254&action=edit
gcc6-pr70641.patch

Untested fix.