[Bug target/70048] [6 Regression][AArch64] Inefficient local array addressing

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70048

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
The regression in the original description looks severe enough to warrant some
fixing even if regressing some other cases.

I agree it's the aarch64 maintainers decision what to do for GCC 6.  But please
don't downgrade bugs to P4 but instead re-target them to GCC 7, adding /7 to
the regression marker in the summary.  RMs then can then categorize this
bugs priority properly to P2 (P3 is just "no categorization done yet").