Hi,

This patch declares unsigned type-qualified builtins and uses them to
implement (rounding) halving-add Neon intrinsics. This removes the
need for many casts in arm_neon.h.

Bootstrapped and regression tested on aarch64-none-linux-gnu - no
issues.

Ok for master?

Thanks,
Jonathan

---

gcc/ChangeLog:

2021-11-09  Jonathan Wright  <jonathan.wri...@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Use BINOPU type
        qualifiers in generator macros for u[r]hadd builtins.
        * config/aarch64/arm_neon.h (vhadd_s8): Remove unnecessary
        cast.
        (vhadd_s16): Likewise.
        (vhadd_s32): Likewise.
        (vhadd_u8): Use type-qualified builtin and remove casts.
        (vhadd_u16): Likewise.
        (vhadd_u32): Likewise.
        (vhaddq_s8): Remove unnecessary cast.
        (vhaddq_s16): Likewise.
        (vhaddq_s32): Likewise.
        (vhaddq_u8): Use type-qualified builtin and remove casts.
        (vhaddq_u16): Likewise.
        (vhaddq_u32): Likewise.
        (vrhadd_s8): Remove unnecessary cast.
        (vrhadd_s16): Likewise.
        (vrhadd_s32): Likewise.
        (vrhadd_u8): Use type-qualified builtin and remove casts.
        (vrhadd_u16): Likewise.
        (vrhadd_u32): Likewise.
        (vrhaddq_s8): Remove unnecessary cast.
        (vrhaddq_s16): Likewise.
        (vrhaddq_s32): Likewise.
        (vrhaddq_u8): Use type-wualified builtin and remove casts.
        (vrhaddq_u16): Likewise.
        (vrhaddq_u32): Likewise.

Attachment: rb15035.patch
Description: rb15035.patch

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