[Bug target/77685] New: rs6000 target has builtin expansion for memcpy but not memcmp

[acsawdey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77685

            Bug ID: 77685
           Summary: rs6000 target has builtin expansion for memcpy but not
                    memcmp
           Product: gcc
           Version: 7.0
            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: rs6000 powerpc64

The rs6000 target needs a cmpmemsi pattern and supporting code generation so it
can inline expand memcmp().