[Bug rtl-optimization/63633] [avr] internal compiler error: unrecognizable insn with mult insns

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63633

--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Created attachment 33801
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33801&action=edit
C test case that also generates wrong code