[Bug target/91289] powerpc-eabi: Usage of -fstack-limit-symbol leads to internal compiler error during RTL pass

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91289

--- Comment #13 from Alan Modra <amodra at gmail dot com> ---
(In reply to Segher Boessenkool from comment #9)
> My patch do not clobber r11, that's the point of it :-)

Eh, I shouldn't look at patches late at night.  Even simple ones.