| //! Mask reductions implementation for `x86` and `x86_64` targets with `SSE2`. |
| #![allow(unused)] |
| |
| /// `x86`/`x86_64` 128-bit m64x2 `SSE2` implementation |
| macro_rules! x86_m64x2_sse2_impl { |
| ($id:ident) => { |
| impl All for $id { |
| #[inline] |
| #[target_feature(enable = "sse")] |
| unsafe fn all(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_pd; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_pd; |
| // _mm_movemask_pd(a) creates a 2bit mask containing the |
| // most significant bit of each lane of `a`. If all |
| // bits are set, then all 2 lanes of the mask are |
| // true. |
| _mm_movemask_pd(crate::mem::transmute(self)) == 0b_11_i32 |
| } |
| } |
| impl Any for $id { |
| #[inline] |
| #[target_feature(enable = "sse")] |
| unsafe fn any(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_pd; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_pd; |
| |
| _mm_movemask_pd(crate::mem::transmute(self)) != 0 |
| } |
| } |
| }; |
| } |
| |
| /// `x86`/`x86_64` 128-bit m8x16 `SSE2` implementation |
| macro_rules! x86_m8x16_sse2_impl { |
| ($id:ident) => { |
| impl All for $id { |
| #[inline] |
| #[target_feature(enable = "sse2")] |
| unsafe fn all(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_epi8; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_epi8; |
| // _mm_movemask_epi8(a) creates a 16bit mask containing the |
| // most significant bit of each byte of `a`. If all |
| // bits are set, then all 16 lanes of the mask are |
| // true. |
| _mm_movemask_epi8(crate::mem::transmute(self)) == i32::from(u16::max_value()) |
| } |
| } |
| impl Any for $id { |
| #[inline] |
| #[target_feature(enable = "sse2")] |
| unsafe fn any(self) -> bool { |
| #[cfg(target_arch = "x86")] |
| use crate::arch::x86::_mm_movemask_epi8; |
| #[cfg(target_arch = "x86_64")] |
| use crate::arch::x86_64::_mm_movemask_epi8; |
| |
| _mm_movemask_epi8(crate::mem::transmute(self)) != 0 |
| } |
| } |
| }; |
| } |