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Convert _mm256_permute2f128_si256 to const generics

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Rémy Rakic 2021-03-01 21:20:11 +01:00 • committed by Amanieu d'Antras
parent 5769c5fc75
commit 7d269db1c0
1 changed files with 6 additions and 13 deletions
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19
library/stdarch/crates/core_arch/src/x86/avx.rs
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@ -1354,19 +1354,12 @@ pub unsafe fn _mm256_permute2f128_pd<const IMM8: i32>(a: __m256d, b: __m256d) ->
/// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm256_permute2f128_si256)
#[inline]
#[target_feature(enable = "avx")]
#[cfg_attr(test, assert_instr(vperm2f128, imm8 = 0x31))]
#[rustc_args_required_const(2)]
#[cfg_attr(test, assert_instr(vperm2f128, IMM8 = 0x31))]
#[rustc_legacy_const_generics(2)]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm256_permute2f128_si256(a: __m256i, b: __m256i, imm8: i32) -> __m256i {
let a = a.as_i32x8();
let b = b.as_i32x8();
macro_rules! call {
($imm8:expr) => {
vperm2f128si256(a, b, $imm8)
};
}
let r = constify_imm8!(imm8, call);
transmute(r)
pub unsafe fn _mm256_permute2f128_si256<const IMM8: i32>(a: __m256i, b: __m256i) -> __m256i {
static_assert_imm8!(IMM8);
transmute(vperm2f128si256(a.as_i32x8(), b.as_i32x8(), IMM8 as i8))
}
/// Broadcasts a single-precision (32-bit) floating-point element from memory
@ -3894,7 +3887,7 @@ mod tests {
unsafe fn test_mm256_permute2f128_si256() {
let a = _mm256_setr_epi32(1, 2, 3, 4, 1, 2, 3, 4);
let b = _mm256_setr_epi32(5, 6, 7, 8, 5, 6, 7, 8);
let r = _mm256_permute2f128_si256(a, b, 0x20);
let r = _mm256_permute2f128_si256::<0x20>(a, b);
let e = _mm256_setr_epi32(1, 2, 3, 4, 5, 6, 7, 8);
assert_eq_m256i(r, e);
}