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Subject: [Bug target/93448] PPC: missing builtin for DFP
 quantize(dqua,dquai,dquaq,dquaiq)
Date: Tue, 29 Aug 2023 15:21:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93448

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Carl Love <carll@gcc.gnu.org>:

https://gcc.gnu.org/g:14a3839c63d550957556d70e824a8293938646e6

commit r14-3550-g14a3839c63d550957556d70e824a8293938646e6
Author: Carl Love <cel@us.ibm.com>
Date:   Tue Aug 29 11:19:40 2023 -0400

    rs6000, add overloaded DFP quantize support

    Add decimal floating point (DFP) quantize built-ins for both 64-bit DFP
    and 128-DFP operands.  In each case, there is an immediate version and a
    variable version of the built-in.  The RM value is a 2-bit constant int
    which specifies the rounding mode to use.  For the immediate versions of
    the built-in, the TE field is a 5-bit constant that specifies the value=
 of
    the ideal exponent for the result.  The built-in specifications are:

      __Decimal64 builtin_dfp_quantize (_Decimal64, _Decimal64,
                                        const int RM)
      __Decimal64 builtin_dfp_quantize (const int TE, _Decimal64,
                                        const int RM)
      __Decimal128 builtin_dfp_quantize (_Decimal128, _Decimal128,
                                         const int RM)
      __Decimal128 builtin_dfp_quantize (const int TE, _Decimal128,
                                         const int RM)

    A testcase is added for the new built-in definitions.

    gcc/ChangeLog:
            * config/rs6000/dfp.md (UNSPEC_DQUAN): New unspec.
            (dfp_dqua_<mode>, dfp_dquai_<mode>): New define_insn.
            * config/rs6000/rs6000-builtins.def (__builtin_dfp_dqua,
            __builtin_dfp_dquai, __builtin_dfp_dquaq, __builtin_dfp_dquaqi):
            New buit-in definitions.
            * config/rs6000/rs6000-overload.def (__builtin_dfp_quantize): N=
ew
            overloaded definition.
            * doc/extend.texi: Add documentation for __builtin_dfp_quantize.

    gcc/testsuite/
            * gcc.target/powerpc/pr93448.c: New test case.

            PR target/93448=