user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

convert _mm_mask_i32gather_ps to const generics

Browse source
This commit is contained in:
Rémy Rakic 2021-03-06 00:44:26 +01:00 • committed by Amanieu d'Antras
parent c84824156b
commit 13201ca35b
1 changed files with 6 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

18
library/stdarch/crates/core_arch/src/x86/avx2.rs
View file

@ -1203,24 +1203,19 @@ pub unsafe fn _mm_i32gather_ps<const SCALE: i32>(slice: *const f32, offsets: __m
/// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_mask_i32gather_ps)
#[inline]
#[target_feature(enable = "avx2")]
#[cfg_attr(test, assert_instr(vgatherdps, scale = 1))]
#[rustc_args_required_const(4)]
#[cfg_attr(test, assert_instr(vgatherdps, SCALE = 1))]
#[rustc_legacy_const_generics(4)]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_mask_i32gather_ps(
pub unsafe fn _mm_mask_i32gather_ps<const SCALE: i32>(
src: __m128,
slice: *const f32,
offsets: __m128i,
mask: __m128,
scale: i32,
) -> __m128 {
static_assert_imm8_scale!(SCALE);
let offsets = offsets.as_i32x4();
let slice = slice as *const i8;
macro_rules! call {
($imm8:expr) => {
pgatherdps(src, slice, offsets, mask, $imm8)
};
}
constify_imm8_gather!(scale, call)
pgatherdps(src, slice, offsets, mask, SCALE as i8)
}
/// Returns values from `slice` at offsets determined by `offsets * scale`,
@ -5627,12 +5622,11 @@ mod tests {
j += 1.0;
}
// A multiplier of 4 is word-addressing for f32s
let r = _mm_mask_i32gather_ps(
let r = _mm_mask_i32gather_ps::<4>(
_mm_set1_ps(256.0),
arr.as_ptr(),
_mm_setr_epi32(0, 16, 64, 96),
_mm_setr_ps(-1.0, -1.0, -1.0, 0.0),
4,
);
assert_eq_m128(r, _mm_setr_ps(0.0, 16.0, 64.0, 256.0));
}