[Bug target/98020] New: PPC: mfvsrwz+extsw not merge to mtvsrwa

[jens.seifert at de dot ibm.com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98020

            Bug ID: 98020
           Summary: PPC: mfvsrwz+extsw not merge to mtvsrwa
           Product: gcc
           Version: 8.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jens.seifert at de dot ibm.com
  Target Milestone: ---

int extract(vector signed int v)
{
   return v[2];
}

Command line:
gcc -mcpu=power8 -maltivec -m64 -O3 -save-temps extract.C

Output:
_Z7extractDv4_i:
.LFB0:
        .cfi_startproc
        mfvsrwz 3,34
        extsw 3,3
        blr