[AArch64][1/14] ARMv8.2-A FP16 data processing intrinsics

[James Greenhalgh]

On Thu, Jul 07, 2016 at 05:13:56PM +0100, Jiong Wang wrote:
> Several data-processing instructions are agnostic to the type of their
> operands. This patch add the mapping between them and those bit- and
> lane-manipulation instructions.
> 
> No ARMv8.2-A FP16 extension hardware support is required for these
> intrinsics.

These intrinsics are independent of the ARMv8.2-A implementation,
and are proposed to be added in a future ACLE specification. I've
checked that the intrinsics added here match those proposed.

OK for trunk.

Thanks,
James

> gcc/
> 2016-07-07  Jiong Wang <jiong.wang@arm.com>
> 
>         * config/aarch64/aarch64-simd.md
> (aarch64_<PERMUTE:perm_insn><PERMUTE:perm_hilo><mode>): Use VALL_F16.
>         (aarch64_ext<mode>): Likewise.
>         (aarch64_rev<REVERSE:rev_op><mode>): Likewise.
>         * config/aarch64/aarch64.c (aarch64_evpc_trn): Support
> V4HFmode and V8HFmode.
>         (aarch64_evpc_uzp): Likewise.
>         (aarch64_evpc_zip): Likewise.
>         (aarch64_evpc_ext): Likewise.
>         (aarch64_evpc_rev): Likewise.
>         * config/aarch64/arm_neon.h (__aarch64_vdup_lane_f16): New.
>         (__aarch64_vdup_laneq_f16): New..
>         (__aarch64_vdupq_lane_f16): New.
>         (__aarch64_vdupq_laneq_f16): New.
>         (vbsl_f16): New.
>         (vbslq_f16): New.
>         (vdup_n_f16): New.
>         (vdupq_n_f16): New.
>         (vdup_lane_f16): New.
>         (vdup_laneq_f16): New.
>         (vdupq_lane_f16): New.
>         (vdupq_laneq_f16): New.
>         (vduph_lane_f16): New.
>         (vduph_laneq_f16): New.
>         (vext_f16): New.
>         (vextq_f16): New.
>         (vmov_n_f16): New.
>         (vmovq_n_f16): New.
>         (vrev64_f16): New.
>         (vrev64q_f16): New.
>         (vtrn1_f16): New.
>         (vtrn1q_f16): New.
>         (vtrn2_f16): New.
>         (vtrn2q_f16): New.
>         (vtrn_f16): New.
>         (vtrnq_f16): New.
>         (__INTERLEAVE_LIST): Support float16x4_t, float16x8_t.
>         (vuzp1_f16): New.
>         (vuzp1q_f16): New.
>         (vuzp2_f16): New.
>         (vuzp2q_f16): New.
>         (vzip1_f16): New.
>         (vzip2q_f16): New.
>         (vmov_n_f16): Reimplement using vdup_n_f16.
>         (vmovq_n_f16): Reimplement using vdupq_n_f16..