| //! Mask reductions implementation for `x86` and `x86_64` targets with `MMX`. |
| #![allow(unused)] |
| |
| macro_rules! x86_m8x8_mmx_impl { |
| ($id:ident) => { |
| impl All for $id { |
| #[inline] |
| #[target_feature(enable = "mmx")] |
| unsafe fn all(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_pi8; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_pi8; |
| // _mm_movemask_pi8(a) creates an 8bit mask containing the most |
| // significant bit of each byte of `a`. If all bits are set, |
| // then all 8 lanes of the mask are true. |
| _mm_movemask_pi8(crate::mem::transmute(self)) |
| == u8::max_value() as i32 |
| } |
| } |
| impl Any for $id { |
| #[inline] |
| #[target_feature(enable = "mmx")] |
| unsafe fn any(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_pi8; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_pi8; |
| |
| _mm_movemask_pi8(crate::mem::transmute(self)) != 0 |
| } |
| } |
| }; |
| } |