[Bug middle-end/70236] Register allocation and loop unrolling lead to waste of registers

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70236

--- Comment #1 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 37967
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37967&action=edit
rnreg dump