[Bug target/117468] [12/13/14/15/16 Regression] arm thumb1 high reg restoration trashes register reserved with -ffixed-reg

[matt.parks--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117468

--- Comment #1 from Matt Parks <matt.pa...@go-aps.com> ---
gcc-patches e-mail with changelog/test case/patch posted here but no replies:
https://gcc.gnu.org/pipermail/gcc-patches/2025-June/687629.html