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From: "jens.seifert at de dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/98020] New: PPC: mfvsrwz+extsw not merge to mtvsrwa
Date: Thu, 26 Nov 2020 19:12:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98020

            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=3Dpower8 -maltivec -m64 -O3 -save-temps extract.C

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