[Bug rtl-optimization/70164] Code/performance regression due to poor register allocation on Cortex-M0

[andre.simoesdiasvieira at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70164

--- Comment #2 from Andre Vieira <andre.simoesdiasvieira at arm dot com> ---
Created attachment 37922
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37922&action=edit
pre-patch ira dump