[Bug target/100236] arm: UB in arm_compute_save_core_reg_mask (shift exponent 4294967295 is too large for 32-bit type 'int')

[acoplan at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100236

--- Comment #1 from Alex Coplan <acoplan at gcc dot gnu.org> ---
GCC compiled with UBSan here. I should have mentioned it needs
-march=armv8.1-m.main.