[Patch, MIPS] Add Octeon3 support

[Matthew Fortune]

> 2014-10-08  Andrew Pinski  <apinski@cavium.com>
> 
>     * config/mips/mips-cpus.def (octeon3): New cpu.
>     * config/mips/mips.c (mips_rtx_cost_data): Add octeon3.
>     (mips_print_operand <case 'T', case 't'>): Fix a bug as the mode
>     of the comparison no longer matches mode of the operands.
>     (mips_issue_rate): Handle PROCESSOR_OCTEON3.
>     * config/mips/mips.h (TARGET_OCTEON):  Add Octeon3.
>     (TARGET_OCTEON2): Likewise.
>     (TUNE_OCTEON): Add Octeon3.
>     * config/mips/mips.md (processor): Add octeon3.
>     * config/mips/octeon.md (octeon_fpu): New automaton and cpu_unit.
>     (octeon_arith): Add octeon3.
>     (octeon_condmove): Remove.
>     (octeon_condmove_o1): New reservation.
>     (octeon_condmove_o2): New reservation.
>     (octeon_condmove_o3_int_on_cc): New reservation.
>     (octeon_load_o2): Add octeon3.
>     (octeon_cop_o2): Likewise.
>     (octeon_store): Likewise.
>     (octeon_brj_o2): Likewise.
>     (octeon_imul3_o2): Likewise.
>     (octeon_imul_o2): Likewise.
>     (octeon_mfhilo_o2): Likewise.
>     (octeon_imadd_o2): Likewise.
>     (octeon_idiv_o2_si): Likewise.
>     (octeon_idiv_o2_di): Likewise.
>     (octeon_fpu): Add to the automaton.
>     (octeon_fpu): New cpu unit.
>     (octeon_condmove_o2): Check for non floating point modes.
>     (octeon_load_o2): Add prefetchx.
>     (octeon_cop_o2): Don't check for octeon3.
>     (octeon3_faddsubcvt): New reservation.
>     (octeon3_fmul): Likewise.
>     (octeon3_fmadd): Likewise.
>     (octeon3_div_sf): Likewise.
>     (octeon3_div_df): Likewise.
>     (octeon3_sqrt_sf): Likewise.
>     (octeon3_sqrt_df): Likewise.
>     (octeon3_rsqrt_sf): Likewise.
>     (octeon3_rsqrt_df): Likewise.
>     (octeon3_fabsnegmov): Likewise.
>     (octeon_fcond): Likewise.
>     (octeon_fcondmov): Likewise.
>     (octeon_fpmtc1): Likewise.
>     (octeon_fpmfc1): Likewise.
>     (octeon_fpload): Likewise.
>     (octeon_fpstore): Likewise.
>     * config/mips/mips-tables.opt: Regenerate.
>     * doc/invoke.texi (-march=@var{arch}): Add octeon3.

Sorry for the delay.  Looks OK just a couple of questions...

Is it intentional that you have not updated driver-native.c to
detect an Octeon 3 CPU? I guess you may be waiting on Octeon 3
being committed to the kernel so you know for sure how the
CPU will appear in procinfo?

Could you confirm what testing the patch has had?

Thanks,
Matthew