avx512f.rs.html -- source
Description: Source to the Rust file `src\libcore\..\stdarch\crates\core_arch\src\x86\avx512f.rs`.
Keywords: rust, rustlang, rust-lang

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    use crate::{
        core_arch::{simd::*, simd_llvm::*, x86::*},
        mem::{self, transmute},
    };

    #[cfg(test)]
    use stdarch_test::assert_instr;

    /// Computes the absolute values of packed 32-bit integers in `a`.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#avx512techs=AVX512F&expand=33,34,4990,33&text=_mm512_abs_epi32)
    #[inline]
    #[target_feature(enable = "avx512f")]
    #[cfg_attr(test, assert_instr(vpabsd))]
    pub unsafe fn _mm512_abs_epi32(a: __m512i) -> __m512i {
        let a = a.as_i32x16();
        // all-0 is a properly initialized i32x16
        let zero: i32x16 = mem::zeroed();
        let sub = simd_sub(zero, a);
        let cmp: i32x16 = simd_gt(a, zero);
        transmute(simd_select(cmp, a, sub))
    }

    /// Computes the absolute value of packed 32-bit integers in `a`, and store the
    /// unsigned results in `dst` using writemask `k` (elements are copied from
    /// `src` when the corresponding mask bit is not set).
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#avx512techs=AVX512F&expand=33,34,4990,33&text=_mm512_abs_epi32)
    #[inline]
    #[target_feature(enable = "avx512f")]
    #[cfg_attr(test, assert_instr(vpabsd))]
    pub unsafe fn _mm512_mask_abs_epi32(src: __m512i, k: __mmask16, a: __m512i) -> __m512i {
        let abs = _mm512_abs_epi32(a).as_i32x16();
        transmute(simd_select_bitmask(k, abs, src.as_i32x16()))
    }

    /// Computes the absolute value of packed 32-bit integers in `a`, and store the
    /// unsigned results in `dst` using zeromask `k` (elements are zeroed out when
    /// the corresponding mask bit is not set).
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#avx512techs=AVX512F&expand=33,34,4990,33,34,35,35&text=_mm512_maskz_abs_epi32)
    #[inline]
    #[target_feature(enable = "avx512f")]
    #[cfg_attr(test, assert_instr(vpabsd))]
    pub unsafe fn _mm512_maskz_abs_epi32(k: __mmask16, a: __m512i) -> __m512i {
        let abs = _mm512_abs_epi32(a).as_i32x16();
        let zero = _mm512_setzero_si512().as_i32x16();
        transmute(simd_select_bitmask(k, abs, zero))
    }

    /// Returns vector of type `__m512i` with all elements set to zero.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#avx512techs=AVX512F&expand=33,34,4990&text=_mm512_setzero_si512)
    #[inline]
    #[target_feature(enable = "avx512f")]
    #[cfg_attr(test, assert_instr(vxorps))]
    pub unsafe fn _mm512_setzero_si512() -> __m512i {
        // All-0 is a properly initialized __m512i
        mem::zeroed()
    }

    /// Sets packed 32-bit integers in `dst` with the supplied values in reverse
    /// order.
    #[inline]
    #[target_feature(enable = "avx512f")]
    pub unsafe fn _mm512_setr_epi32(
        e15: i32,
        e14: i32,
        e13: i32,
        e12: i32,
        e11: i32,
        e10: i32,
        e9: i32,
        e8: i32,
        e7: i32,
        e6: i32,
        e5: i32,
        e4: i32,
        e3: i32,
        e2: i32,
        e1: i32,
        e0: i32,
    ) -> __m512i {
        let r = i32x16(
            e15, e14, e13, e12, e11, e10, e9, e8, e7, e6, e5, e4, e3, e2, e1, e0,
        );
        transmute(r)
    }

    /// Broadcast 64-bit integer `a` to all elements of `dst`.
    #[inline]
    #[target_feature(enable = "avx512f")]
    pub unsafe fn _mm512_set1_epi64(a: i64) -> __m512i {
        transmute(i64x8::splat(a))
    }

    #[cfg(test)]
    mod tests {
        use std;
        use stdarch_test::simd_test;

        use crate::core_arch::x86::*;

        #[simd_test(enable = "avx512f")]
        unsafe fn test_mm512_abs_epi32() {
            #[rustfmt::skip]
            let a = _mm512_setr_epi32(
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
            );
            let r = _mm512_abs_epi32(a);
            let e = _mm512_setr_epi32(
                0,
                1,
                1,
                std::i32::MAX,
                std::i32::MAX.wrapping_add(1),
                100,
                100,
                32,
                0,
                1,
                1,
                std::i32::MAX,
                std::i32::MAX.wrapping_add(1),
                100,
                100,
                32,
            );
            assert_eq_m512i(r, e);
        }

        #[simd_test(enable = "avx512f")]
        unsafe fn test_mm512_mask_abs_epi32() {
            #[rustfmt::skip]
            let a = _mm512_setr_epi32(
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
            );
            let r = _mm512_mask_abs_epi32(a, 0, a);
            assert_eq_m512i(r, a);
            let r = _mm512_mask_abs_epi32(a, 0b11111111, a);
            let e = _mm512_setr_epi32(
                0,
                1,
                1,
                std::i32::MAX,
                std::i32::MAX.wrapping_add(1),
                100,
                100,
                32,
                0,
                1,
                -1,
                std::i32::MAX,
                std::i32::MIN,
                100,
                -100,
                -32,
            );
            assert_eq_m512i(r, e);
        }

        #[simd_test(enable = "avx512f")]
        unsafe fn test_mm512_maskz_abs_epi32() {
            #[rustfmt::skip]
            let a = _mm512_setr_epi32(
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
                0, 1, -1, std::i32::MAX,
                std::i32::MIN, 100, -100, -32,
            );
            let r = _mm512_maskz_abs_epi32(0, a);
            assert_eq_m512i(r, _mm512_setzero_si512());
            let r = _mm512_maskz_abs_epi32(0b11111111, a);
            let e = _mm512_setr_epi32(
                0,
                1,
                1,
                std::i32::MAX,
                std::i32::MAX.wrapping_add(1),
                100,
                100,
                32,
                0,
                0,
                0,
                0,
                0,
                0,
                0,
                0,
            );
            assert_eq_m512i(r, e);
        }
    }