[Bug target/94954] Wrong code generation for vec_pack_to_short_fp32 builtin for Power

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94954

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Will Schmidt
<wills...@gcc.gnu.org>:

https://gcc.gnu.org/g:2d980dd19d11d7e530922bea6eafad8ff6641df7

commit r10-8430-g2d980dd19d11d7e530922bea6eafad8ff6641df7
Author: Will Schmidt <will_schm...@vnet.ibm.com>
Date:   Mon Jun 8 10:39:18 2020 -0500

    Backport to gcc-10

    [PATCH, PR target/94954] Fix wrong codegen for vec_pack_to_short_fp32()
builtin

    Hi,
      Fix codegen for builtin vec_pack_to_short_fp32.  This includes adding
      a define_insn for xvcvsphp, and adding a new define_expand for
      convert_4f32_8f16.

    [v2]
      Comment on altivec.md "convert_4f32_8f16" enhanced.
      Testsuite builtins-1-p9-runnable.c updated.

      OK for trunk and backports?

      Thanks
      -Will

    PR target/94954

    gcc/Changelog:

            * config/rs6000/altivec.h (vec_pack_to_short_fp32): Update.
            * config/rs6000/altivec.md (UNSPEC_CONVERT_4F32_8F16): New unspec.
            (convert_4f32_8f16): New define_expand
            * config/rs6000/rs6000-builtin.def (convert_4f32_8f16): New builtin
define
            and overload.
            * config/rs6000/rs6000-call.c (P9V_BUILTIN_VEC_CONVERT_4F32_8F16):
New
            overloaded builtin entry.
            * config/rs6000/vsx.md (UNSPEC_VSX_XVCVSPHP): New unspec.
            (vsx_xvcvsphp): New define_insn.

    gcc/testsuite/ChangeLog:
            * gcc.target/powerpc/builtins-1-p9-runnable.c: Update.