[Bug target/85434] Address of stack protector guard spilled to stack on ARM

[thopre01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85434

--- Comment #13 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Remains now:

1) add support for PIC access to the guard
2) finish cleanup of the patch