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

[segher at gcc dot gnu.org]

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

--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
My patch do not clobber r11, that's the point of it :-)