[Bug target/80718] GCC generates slow code for offsettable vec_duplicate

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80718

--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Mon May 22 22:44:45 2017
New Revision: 248352

URL: https://gcc.gnu.org/viewcvs?rev=248352&root=gcc&view=rev
Log:
[gcc]
2017-05-22  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/80718
        * config/rs6000/vsx.md (vsx_splat_<mode>, VSX_D iterator): Split
        V2DF/V2DI splat into two separate patterns, one that handles
        registers, and the other that only handles memory.  Drop support
        for splatting from a GPR on ISA 2.07 and then splitting the
        splat into direct move and splat.
        (vsx_splat_<mode>_reg): Likewise.
        (vsx_splat_<mode>_mem): Likewise.

[gcc/testsuite]
2017-05-22  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/80718
        * gcc.target/powerpc/pr80718.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr80718.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/vsx.md
    trunk/gcc/testsuite/ChangeLog