[Bug target/80697] New: On PowerPC, the spec 2006 benchmark milc had a 5.6% regression under GCC 7.1 compared to GCC 6.3.

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80697

            Bug ID: 80697
           Summary: On PowerPC, the spec 2006 benchmark milc had a 5.6%
                    regression under GCC 7.1 compared to GCC 6.3.
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: meissner at gcc dot gnu.org
  Target Milestone: ---

After GCC 7.1 came out, I ran the spec 2006 benchmark suite.  The milc
benchmark had a 5.6% regression with GCC 7.1 compared to GCC 6.3.

In particular, the function mult_adj_su3_mat_vec was 48% slower with GCC 7.1
compared to GCC 6.3.