[Bug middle-end/119730] Unexpected -Wclobbered with -O2 and local register variables

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119730

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I should mention why, x0 is assigned to the x0 register but x0 is also used for
arguments and both just happen to contain zero.