[Bug target/83546] -march=silvermont doesn't enable rdrnd by default despite what docs say

[speryt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83546

--- Comment #2 from speryt at gcc dot gnu.org ---
Author: speryt
Date: Wed Jan 17 09:02:13 2018
New Revision: 256777

URL: https://gcc.gnu.org/viewcvs?rev=256777&root=gcc&view=rev
Log:
Re-enabling of RDRND for Silvermont.

2018-01-15  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/

        PR target/83546
        * config/i386/i386.c (ix86_option_override_internal): Add PTA_RDRND
        to PTA_SILVERMONT.

2018-01-15  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/testsuite/

        PR target/83546
        * gcc.target/i386/pr83546.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr83546.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog