[Bug target/83618] _rdpid_u32 doesn't work on 64-bit targets as gas expects the 64-bit register

[jkoval at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83618

--- Comment #2 from Julia Koval <jkoval at gcc dot gnu.org> ---
Author: jkoval
Date: Wed Jan 31 11:06:20 2018
New Revision: 257229

URL: https://gcc.gnu.org/viewcvs?rev=257229&root=gcc&view=rev
Log:
PR target/83618

gcc/
        * config/i386/i386.c (ix86_expand_builtin): Handle IX86_BUILTIN_RDPID.
        * config/i386/i386.md (rdpid_rex64) New.
        (rdpid): Make 32bit only.

gcc/testsuite/
        * gcc.target/i386/rdpid.c: Remove "eax".

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/rdpid.c