[Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Sandra posted a patch that will probably fix this (out-of-bound shift values).