[PATCH] aarch64: Use type-qualified builtins for XTN[2] Neon intrinsics

[Jonathan Wright]

Hi,

This patch declares unsigned type-qualified builtins and uses them for
XTN[2] Neon intrinsics. This removes the need for casts in arm_neon.h.

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

Ok for master?

Thanks,
Jonathan

---

gcc/ChangeLog:

2021-11-08  Jonathan Wright  <jonathan.wright@arm.com>

	* config/aarch64/aarch64-simd-builtins.def: Declare unsigned
	type-qualified builtins for XTN[2].
	* config/aarch64/arm_neon.h (vmovn_high_u16): Use type-
	qualified builtin and remove casts.
	(vmovn_high_u32): Likewise.
	(vmovn_high_u64): Likewise.
	(vmovn_u16): Likewise.
	(vmovn_u32): Likewise.
	(vmovn_u64): Likewise.
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