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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/103981] New: powerpc64le: Wrong code generated for
 vec_cntlz_lsbb, vec_cnttz_lsbb
Date: Tue, 11 Jan 2022 20:24:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103981

            Bug ID: 103981
           Summary: powerpc64le: Wrong code generated for vec_cntlz_lsbb,
                    vec_cnttz_lsbb
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: wschmidt at gcc dot gnu.org
  Target Milestone: ---

Per the PVIPR documentation, vec_cntlz_lsbb should generate vctzlsbb for li=
ttle
endian, and vclzlsbb for big endian.  vec_cnttz_lsbb should do the opposite=
.=20
The little-endian code generation is incorrect for both.  Clang gets this
right, for what it's worth.=