[Bug rtl-optimization/69764] [5/6 Regression] ICE on x86_64-linux-gnu at -O0 (in decompose, at rtl.h:2107)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69764

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 37668
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37668&action=edit
gcc6-pr69764.patch

Untested fix.