[Bug tree-optimization/70130] [6 Regression] h264ref fails with verification error starting with r231674

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70130

--- Comment #14 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Unfortunately the patch doesn't help with Alan's streamlined test.  It still
fails (tested on powerpc64le).