[Bug rtl-optimization/81747] [8 Regression] ICE in operator[], at vec.h:749

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81747

--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
Yeah, I have more or less the same patch about to be bootstrapped.