[Bug target/66033] rs6000 nops removed by rtl_dce

[amodra at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66033

--- Comment #3 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Wed May  6 13:12:19 2015
New Revision: 222851

URL: https://gcc.gnu.org/viewcvs?rev=222851&root=gcc&view=rev
Log:
        PR target/66033
        * config/rs6000/rs6000.md (nop): Use an unspec pattern.
        (UNSPEC_NOP): Define.
        (reload_vsx_from_gpr<mode>): Add missing DONE.
        (reload_gpr_from_vsx<mode>): Likewise.
        * config/rs6000/vsx.md (vsx_mul_v2di): Likewise.
        (vsx_div_v2di, vsx_udiv_v2di): Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.md
    trunk/gcc/config/rs6000/vsx.md