[Bug target/84209] New: [avr] Don't split SP in split2

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84209

            Bug ID: 84209
           Summary: [avr] Don't split SP in split2
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gjl at gcc dot gnu.org
  Target Milestone: ---

Since r242907 there is a split for HI moved that might also split SP.  This
might lead to wrong code.

Using -fdisable-rtl-split2 might do as a work-around.