projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| f20569fa XL |
1 | //! Mask reductions implementation for `x86` and `x86_64` targets with `SSE2`. |
| 2 | #![allow(unused)] | |
| 3 | ||
| 4 | /// `x86`/`x86_64` 128-bit m64x2 `SSE2` implementation | |
| 5 | macro_rules! x86_m64x2_sse2_impl { | |
| 6 | ($id:ident) => { | |
| 7 | impl All for $id { | |
| 8 | #[inline] | |
| 9 | #[target_feature(enable = "sse")] | |
| 10 | unsafe fn all(self) -> bool { | |
| 11 | #[cfg(target_arch = "x86")] | |
| 12 | use crate::arch::x86::_mm_movemask_pd; | |
| 13 | #[cfg(target_arch = "x86_64")] | |
| 14 | use crate::arch::x86_64::_mm_movemask_pd; | |
| 15 | // _mm_movemask_pd(a) creates a 2bit mask containing the | |
| 16 | // most significant bit of each lane of `a`. If all | |
| 17 | // bits are set, then all 2 lanes of the mask are | |
| 18 | // true. | |
| f25598a0 | 19 | _mm_movemask_pd(crate::mem::transmute(self)) == 0b_11_i32 |
| f20569fa XL |
20 | } |
| 21 | } | |
| 22 | impl Any for $id { | |
| 23 | #[inline] | |
| 24 | #[target_feature(enable = "sse")] | |
| 25 | unsafe fn any(self) -> bool { | |
| 26 | #[cfg(target_arch = "x86")] | |
| 27 | use crate::arch::x86::_mm_movemask_pd; | |
| 28 | #[cfg(target_arch = "x86_64")] | |
| 29 | use crate::arch::x86_64::_mm_movemask_pd; | |
| 30 | ||
| 31 | _mm_movemask_pd(crate::mem::transmute(self)) != 0 | |
| 32 | } | |
| 33 | } | |
| 34 | }; | |
| 35 | } | |
| 36 | ||
| 37 | /// `x86`/`x86_64` 128-bit m8x16 `SSE2` implementation | |
| 38 | macro_rules! x86_m8x16_sse2_impl { | |
| 39 | ($id:ident) => { | |
| 40 | impl All for $id { | |
| 41 | #[inline] | |
| 42 | #[target_feature(enable = "sse2")] | |
| 43 | unsafe fn all(self) -> bool { | |
| 44 | #[cfg(target_arch = "x86")] | |
| 45 | use crate::arch::x86::_mm_movemask_epi8; | |
| 46 | #[cfg(target_arch = "x86_64")] | |
| 47 | use crate::arch::x86_64::_mm_movemask_epi8; | |
| 48 | // _mm_movemask_epi8(a) creates a 16bit mask containing the | |
| 49 | // most significant bit of each byte of `a`. If all | |
| 50 | // bits are set, then all 16 lanes of the mask are | |
| 51 | // true. | |
| f25598a0 | 52 | _mm_movemask_epi8(crate::mem::transmute(self)) == i32::from(u16::max_value()) |
| f20569fa XL |
53 | } |
| 54 | } | |
| 55 | impl Any for $id { | |
| 56 | #[inline] | |
| 57 | #[target_feature(enable = "sse2")] | |
| 58 | unsafe fn any(self) -> bool { | |
| 59 | #[cfg(target_arch = "x86")] | |
| 60 | use crate::arch::x86::_mm_movemask_epi8; | |
| 61 | #[cfg(target_arch = "x86_64")] | |
| 62 | use crate::arch::x86_64::_mm_movemask_epi8; | |
| 63 | ||
| 64 | _mm_movemask_epi8(crate::mem::transmute(self)) != 0 | |
| 65 | } | |
| 66 | } | |
| 67 | }; | |
| 68 | } |