[Bug target/80175] New: rs6000 target should have a strlensi pattern that works for recent powerpc processors

[acsawdey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80175

            Bug ID: 80175
           Summary: rs6000 target should have a strlensi pattern that
                    works for recent powerpc processors
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: acsawdey at gcc dot gnu.org
          Reporter: acsawdey at gcc dot gnu.org
                CC: wschmidt at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc64*-*-*

The existing define_expand for strlensi uses dlmzb which is only on the
405/440/464/476 processors. It would be nice to generate a reasonable inline
sequence to do strlen on recent processors, maybe power7 and up.