core/stdarch/crates/core_arch/src/x86/

sse2.rs

//! Streaming SIMD Extensions 2 (SSE2)

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

use crate::{
    core_arch::{simd::*, x86::*},
    intrinsics::simd::*,
    intrinsics::sqrtf64,
    mem, ptr,
};

/// Provides a hint to the processor that the code sequence is a spin-wait loop.
///
/// This can help improve the performance and power consumption of spin-wait
/// loops.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_pause)
#[inline]
#[cfg_attr(all(test, target_feature = "sse2"), assert_instr(pause))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_pause() {
    // note: `pause` is guaranteed to be interpreted as a `nop` by CPUs without
    // the SSE2 target-feature - therefore it does not require any target features
    unsafe { pause() }
}

/// Invalidates and flushes the cache line that contains `p` from all levels of
/// the cache hierarchy.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_clflush)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(clflush))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_clflush(p: *const u8) {
    clflush(p)
}

/// Performs a serializing operation on all load-from-memory instructions
/// that were issued prior to this instruction.
///
/// Guarantees that every load instruction that precedes, in program order, is
/// globally visible before any load instruction which follows the fence in
/// program order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_lfence)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(lfence))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_lfence() {
    unsafe { lfence() }
}

/// Performs a serializing operation on all load-from-memory and store-to-memory
/// instructions that were issued prior to this instruction.
///
/// Guarantees that every memory access that precedes, in program order, the
/// memory fence instruction is globally visible before any memory instruction
/// which follows the fence in program order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mfence)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(mfence))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_mfence() {
    unsafe { mfence() }
}

/// Adds packed 8-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_add(a.as_i8x16(), b.as_i8x16())) }
}

/// Adds packed 16-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_add(a.as_i16x8(), b.as_i16x8())) }
}

/// Adds packed 32-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_add(a.as_i32x4(), b.as_i32x4())) }
}

/// Adds packed 64-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_epi64(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_add(a.as_i64x2(), b.as_i64x2())) }
}

/// Adds packed 8-bit integers in `a` and `b` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_adds_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddsb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_adds_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_add(a.as_i8x16(), b.as_i8x16())) }
}

/// Adds packed 16-bit integers in `a` and `b` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_adds_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddsw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_adds_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_add(a.as_i16x8(), b.as_i16x8())) }
}

/// Adds packed unsigned 8-bit integers in `a` and `b` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_adds_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddusb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_adds_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_add(a.as_u8x16(), b.as_u8x16())) }
}

/// Adds packed unsigned 16-bit integers in `a` and `b` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_adds_epu16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(paddusw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_adds_epu16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_add(a.as_u16x8(), b.as_u16x8())) }
}

/// Averages packed unsigned 8-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_avg_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pavgb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_avg_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let a = simd_cast::<_, u16x16>(a.as_u8x16());
        let b = simd_cast::<_, u16x16>(b.as_u8x16());
        let r = simd_shr(simd_add(simd_add(a, b), u16x16::splat(1)), u16x16::splat(1));
        transmute(simd_cast::<_, u8x16>(r))
    }
}

/// Averages packed unsigned 16-bit integers in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_avg_epu16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pavgw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_avg_epu16(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let a = simd_cast::<_, u32x8>(a.as_u16x8());
        let b = simd_cast::<_, u32x8>(b.as_u16x8());
        let r = simd_shr(simd_add(simd_add(a, b), u32x8::splat(1)), u32x8::splat(1));
        transmute(simd_cast::<_, u16x8>(r))
    }
}

/// Multiplies and then horizontally add signed 16 bit integers in `a` and `b`.
///
/// Multiplies packed signed 16-bit integers in `a` and `b`, producing
/// intermediate signed 32-bit integers. Horizontally add adjacent pairs of
/// intermediate 32-bit integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_madd_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmaddwd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_madd_epi16(a: __m128i, b: __m128i) -> __m128i {
    // It's a trick used in the Adler-32 algorithm to perform a widening addition.
    //
    // ```rust
    // #[target_feature(enable = "sse2")]
    // unsafe fn widening_add(mad: __m128i) -> __m128i {
    //     _mm_madd_epi16(mad, _mm_set1_epi16(1))
    // }
    // ```
    //
    // If we implement this using generic vector intrinsics, the optimizer
    // will eliminate this pattern, and `pmaddwd` will no longer be emitted.
    // For this reason, we use x86 intrinsics.
    unsafe { transmute(pmaddwd(a.as_i16x8(), b.as_i16x8())) }
}

/// Compares packed 16-bit integers in `a` and `b`, and returns the packed
/// maximum values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_max_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmaxsw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_max_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_imax(a.as_i16x8(), b.as_i16x8()).as_m128i() }
}

/// Compares packed unsigned 8-bit integers in `a` and `b`, and returns the
/// packed maximum values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_max_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmaxub))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_max_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_imax(a.as_u8x16(), b.as_u8x16()).as_m128i() }
}

/// Compares packed 16-bit integers in `a` and `b`, and returns the packed
/// minimum values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_min_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pminsw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_min_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_imin(a.as_i16x8(), b.as_i16x8()).as_m128i() }
}

/// Compares packed unsigned 8-bit integers in `a` and `b`, and returns the
/// packed minimum values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_min_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pminub))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_min_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_imin(a.as_u8x16(), b.as_u8x16()).as_m128i() }
}

/// Multiplies the packed 16-bit integers in `a` and `b`.
///
/// The multiplication produces intermediate 32-bit integers, and returns the
/// high 16 bits of the intermediate integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mulhi_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmulhw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mulhi_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let a = simd_cast::<_, i32x8>(a.as_i16x8());
        let b = simd_cast::<_, i32x8>(b.as_i16x8());
        let r = simd_shr(simd_mul(a, b), i32x8::splat(16));
        transmute(simd_cast::<i32x8, i16x8>(r))
    }
}

/// Multiplies the packed unsigned 16-bit integers in `a` and `b`.
///
/// The multiplication produces intermediate 32-bit integers, and returns the
/// high 16 bits of the intermediate integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mulhi_epu16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmulhuw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mulhi_epu16(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let a = simd_cast::<_, u32x8>(a.as_u16x8());
        let b = simd_cast::<_, u32x8>(b.as_u16x8());
        let r = simd_shr(simd_mul(a, b), u32x8::splat(16));
        transmute(simd_cast::<u32x8, u16x8>(r))
    }
}

/// Multiplies the packed 16-bit integers in `a` and `b`.
///
/// The multiplication produces intermediate 32-bit integers, and returns the
/// low 16 bits of the intermediate integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mullo_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmullw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mullo_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_mul(a.as_i16x8(), b.as_i16x8())) }
}

/// Multiplies the low unsigned 32-bit integers from each packed 64-bit element
/// in `a` and `b`.
///
/// Returns the unsigned 64-bit results.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mul_epu32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmuludq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mul_epu32(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let a = a.as_u64x2();
        let b = b.as_u64x2();
        let mask = u64x2::splat(u32::MAX as u64);
        transmute(simd_mul(simd_and(a, mask), simd_and(b, mask)))
    }
}

/// Sum the absolute differences of packed unsigned 8-bit integers.
///
/// Computes the absolute differences of packed unsigned 8-bit integers in `a`
/// and `b`, then horizontally sum each consecutive 8 differences to produce
/// two unsigned 16-bit integers, and pack these unsigned 16-bit integers in
/// the low 16 bits of 64-bit elements returned.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sad_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psadbw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sad_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(psadbw(a.as_u8x16(), b.as_u8x16())) }
}

/// Subtracts packed 8-bit integers in `b` from packed 8-bit integers in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_sub(a.as_i8x16(), b.as_i8x16())) }
}

/// Subtracts packed 16-bit integers in `b` from packed 16-bit integers in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_sub(a.as_i16x8(), b.as_i16x8())) }
}

/// Subtract packed 32-bit integers in `b` from packed 32-bit integers in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_sub(a.as_i32x4(), b.as_i32x4())) }
}

/// Subtract packed 64-bit integers in `b` from packed 64-bit integers in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_epi64(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_sub(a.as_i64x2(), b.as_i64x2())) }
}

/// Subtract packed 8-bit integers in `b` from packed 8-bit integers in `a`
/// using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_subs_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubsb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_subs_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_sub(a.as_i8x16(), b.as_i8x16())) }
}

/// Subtract packed 16-bit integers in `b` from packed 16-bit integers in `a`
/// using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_subs_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubsw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_subs_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_sub(a.as_i16x8(), b.as_i16x8())) }
}

/// Subtract packed unsigned 8-bit integers in `b` from packed unsigned 8-bit
/// integers in `a` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_subs_epu8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubusb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_subs_epu8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_sub(a.as_u8x16(), b.as_u8x16())) }
}

/// Subtract packed unsigned 16-bit integers in `b` from packed unsigned 16-bit
/// integers in `a` using saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_subs_epu16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psubusw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_subs_epu16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(simd_saturating_sub(a.as_u16x8(), b.as_u16x8())) }
}

/// Shifts `a` left by `IMM8` bytes while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_slli_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pslldq, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_slli_si128<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe { _mm_slli_si128_impl::<IMM8>(a) }
}

/// Implementation detail: converts the immediate argument of the
/// `_mm_slli_si128` intrinsic into a compile-time constant.
#[inline]
#[target_feature(enable = "sse2")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
const unsafe fn _mm_slli_si128_impl<const IMM8: i32>(a: __m128i) -> __m128i {
    const fn mask(shift: i32, i: u32) -> u32 {
        let shift = shift as u32 & 0xff;
        if shift > 15 { i } else { 16 - shift + i }
    }
    transmute::<i8x16, _>(simd_shuffle!(
        i8x16::ZERO,
        a.as_i8x16(),
        [
            mask(IMM8, 0),
            mask(IMM8, 1),
            mask(IMM8, 2),
            mask(IMM8, 3),
            mask(IMM8, 4),
            mask(IMM8, 5),
            mask(IMM8, 6),
            mask(IMM8, 7),
            mask(IMM8, 8),
            mask(IMM8, 9),
            mask(IMM8, 10),
            mask(IMM8, 11),
            mask(IMM8, 12),
            mask(IMM8, 13),
            mask(IMM8, 14),
            mask(IMM8, 15),
        ],
    ))
}

/// Shifts `a` left by `IMM8` bytes while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_bslli_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pslldq, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_bslli_si128<const IMM8: i32>(a: __m128i) -> __m128i {
    unsafe {
        static_assert_uimm_bits!(IMM8, 8);
        _mm_slli_si128_impl::<IMM8>(a)
    }
}

/// Shifts `a` right by `IMM8` bytes while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_bsrli_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrldq, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_bsrli_si128<const IMM8: i32>(a: __m128i) -> __m128i {
    unsafe {
        static_assert_uimm_bits!(IMM8, 8);
        _mm_srli_si128_impl::<IMM8>(a)
    }
}

/// Shifts packed 16-bit integers in `a` left by `IMM8` while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_slli_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psllw, IMM8 = 7))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_slli_epi16<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 16 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shl(a.as_u16x8(), u16x8::splat(IMM8 as u16)))
        }
    }
}

/// Shifts packed 16-bit integers in `a` left by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sll_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psllw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sll_epi16(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psllw(a.as_i16x8(), count.as_i16x8())) }
}

/// Shifts packed 32-bit integers in `a` left by `IMM8` while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_slli_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pslld, IMM8 = 7))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_slli_epi32<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 32 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shl(a.as_u32x4(), u32x4::splat(IMM8 as u32)))
        }
    }
}

/// Shifts packed 32-bit integers in `a` left by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sll_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pslld))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sll_epi32(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(pslld(a.as_i32x4(), count.as_i32x4())) }
}

/// Shifts packed 64-bit integers in `a` left by `IMM8` while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_slli_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psllq, IMM8 = 7))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_slli_epi64<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 64 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shl(a.as_u64x2(), u64x2::splat(IMM8 as u64)))
        }
    }
}

/// Shifts packed 64-bit integers in `a` left by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sll_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psllq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sll_epi64(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psllq(a.as_i64x2(), count.as_i64x2())) }
}

/// Shifts packed 16-bit integers in `a` right by `IMM8` while shifting in sign
/// bits.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srai_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psraw, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srai_epi16<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe { transmute(simd_shr(a.as_i16x8(), i16x8::splat(IMM8.min(15) as i16))) }
}

/// Shifts packed 16-bit integers in `a` right by `count` while shifting in sign
/// bits.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sra_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psraw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sra_epi16(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psraw(a.as_i16x8(), count.as_i16x8())) }
}

/// Shifts packed 32-bit integers in `a` right by `IMM8` while shifting in sign
/// bits.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srai_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrad, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srai_epi32<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe { transmute(simd_shr(a.as_i32x4(), i32x4::splat(IMM8.min(31)))) }
}

/// Shifts packed 32-bit integers in `a` right by `count` while shifting in sign
/// bits.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sra_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrad))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sra_epi32(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psrad(a.as_i32x4(), count.as_i32x4())) }
}

/// Shifts `a` right by `IMM8` bytes while shifting in zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srli_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrldq, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srli_si128<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe { _mm_srli_si128_impl::<IMM8>(a) }
}

/// Implementation detail: converts the immediate argument of the
/// `_mm_srli_si128` intrinsic into a compile-time constant.
#[inline]
#[target_feature(enable = "sse2")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
const unsafe fn _mm_srli_si128_impl<const IMM8: i32>(a: __m128i) -> __m128i {
    const fn mask(shift: i32, i: u32) -> u32 {
        if (shift as u32) > 15 {
            i + 16
        } else {
            i + (shift as u32)
        }
    }
    let x: i8x16 = simd_shuffle!(
        a.as_i8x16(),
        i8x16::ZERO,
        [
            mask(IMM8, 0),
            mask(IMM8, 1),
            mask(IMM8, 2),
            mask(IMM8, 3),
            mask(IMM8, 4),
            mask(IMM8, 5),
            mask(IMM8, 6),
            mask(IMM8, 7),
            mask(IMM8, 8),
            mask(IMM8, 9),
            mask(IMM8, 10),
            mask(IMM8, 11),
            mask(IMM8, 12),
            mask(IMM8, 13),
            mask(IMM8, 14),
            mask(IMM8, 15),
        ],
    );
    transmute(x)
}

/// Shifts packed 16-bit integers in `a` right by `IMM8` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srli_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrlw, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srli_epi16<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 16 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shr(a.as_u16x8(), u16x8::splat(IMM8 as u16)))
        }
    }
}

/// Shifts packed 16-bit integers in `a` right by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srl_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrlw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_srl_epi16(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psrlw(a.as_i16x8(), count.as_i16x8())) }
}

/// Shifts packed 32-bit integers in `a` right by `IMM8` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srli_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrld, IMM8 = 8))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srli_epi32<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 32 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shr(a.as_u32x4(), u32x4::splat(IMM8 as u32)))
        }
    }
}

/// Shifts packed 32-bit integers in `a` right by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srl_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrld))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_srl_epi32(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psrld(a.as_i32x4(), count.as_i32x4())) }
}

/// Shifts packed 64-bit integers in `a` right by `IMM8` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srli_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrlq, IMM8 = 1))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_srli_epi64<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        if IMM8 >= 64 {
            _mm_setzero_si128()
        } else {
            transmute(simd_shr(a.as_u64x2(), u64x2::splat(IMM8 as u64)))
        }
    }
}

/// Shifts packed 64-bit integers in `a` right by `count` while shifting in
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_srl_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(psrlq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_srl_epi64(a: __m128i, count: __m128i) -> __m128i {
    unsafe { transmute(psrlq(a.as_i64x2(), count.as_i64x2())) }
}

/// Computes the bitwise AND of 128 bits (representing integer data) in `a` and
/// `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_and_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(andps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_and_si128(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_and(a, b) }
}

/// Computes the bitwise NOT of 128 bits (representing integer data) in `a` and
/// then AND with `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_andnot_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(andnps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_andnot_si128(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_and(simd_xor(_mm_set1_epi8(-1), a), b) }
}

/// Computes the bitwise OR of 128 bits (representing integer data) in `a` and
/// `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_or_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(orps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_or_si128(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_or(a, b) }
}

/// Computes the bitwise XOR of 128 bits (representing integer data) in `a` and
/// `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_xor_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(xorps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_xor_si128(a: __m128i, b: __m128i) -> __m128i {
    unsafe { simd_xor(a, b) }
}

/// Compares packed 8-bit integers in `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpeq_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpeqb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpeq_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i8x16, _>(simd_eq(a.as_i8x16(), b.as_i8x16())) }
}

/// Compares packed 16-bit integers in `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpeq_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpeqw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpeq_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i16x8, _>(simd_eq(a.as_i16x8(), b.as_i16x8())) }
}

/// Compares packed 32-bit integers in `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpeq_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpeqd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpeq_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i32x4, _>(simd_eq(a.as_i32x4(), b.as_i32x4())) }
}

/// Compares packed 8-bit integers in `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpgt_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpgt_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i8x16, _>(simd_gt(a.as_i8x16(), b.as_i8x16())) }
}

/// Compares packed 16-bit integers in `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpgt_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpgt_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i16x8, _>(simd_gt(a.as_i16x8(), b.as_i16x8())) }
}

/// Compares packed 32-bit integers in `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpgt_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmpgt_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i32x4, _>(simd_gt(a.as_i32x4(), b.as_i32x4())) }
}

/// Compares packed 8-bit integers in `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmplt_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmplt_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i8x16, _>(simd_lt(a.as_i8x16(), b.as_i8x16())) }
}

/// Compares packed 16-bit integers in `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmplt_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmplt_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i16x8, _>(simd_lt(a.as_i16x8(), b.as_i16x8())) }
}

/// Compares packed 32-bit integers in `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmplt_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pcmpgtd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cmplt_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i32x4, _>(simd_lt(a.as_i32x4(), b.as_i32x4())) }
}

/// Converts the lower two packed 32-bit integers in `a` to packed
/// double-precision (64-bit) floating-point elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtepi32_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtdq2pd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtepi32_pd(a: __m128i) -> __m128d {
    unsafe {
        let a = a.as_i32x4();
        simd_cast::<i32x2, __m128d>(simd_shuffle!(a, a, [0, 1]))
    }
}

/// Returns `a` with its lower element replaced by `b` after converting it to
/// an `f64`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsi32_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtsi2sd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtsi32_sd(a: __m128d, b: i32) -> __m128d {
    unsafe { simd_insert!(a, 0, b as f64) }
}

/// Converts packed 32-bit integers in `a` to packed single-precision (32-bit)
/// floating-point elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtepi32_ps)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtdq2ps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtepi32_ps(a: __m128i) -> __m128 {
    unsafe { transmute(simd_cast::<_, f32x4>(a.as_i32x4())) }
}

/// Converts packed single-precision (32-bit) floating-point elements in `a`
/// to packed 32-bit integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtps_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtps2dq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvtps_epi32(a: __m128) -> __m128i {
    unsafe { transmute(cvtps2dq(a)) }
}

/// Returns a vector whose lowest element is `a` and all higher elements are
/// `0`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsi32_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtsi32_si128(a: i32) -> __m128i {
    unsafe { transmute(i32x4::new(a, 0, 0, 0)) }
}

/// Returns the lowest element of `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsi128_si32)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtsi128_si32(a: __m128i) -> i32 {
    unsafe { simd_extract!(a.as_i32x4(), 0) }
}

/// Sets packed 64-bit integers with the supplied values, from highest to
/// lowest.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_epi64x)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_epi64x(e1: i64, e0: i64) -> __m128i {
    unsafe { transmute(i64x2::new(e0, e1)) }
}

/// Sets packed 32-bit integers with the supplied values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_epi32)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_epi32(e3: i32, e2: i32, e1: i32, e0: i32) -> __m128i {
    unsafe { transmute(i32x4::new(e0, e1, e2, e3)) }
}

/// Sets packed 16-bit integers with the supplied values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_epi16)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_epi16(
    e7: i16,
    e6: i16,
    e5: i16,
    e4: i16,
    e3: i16,
    e2: i16,
    e1: i16,
    e0: i16,
) -> __m128i {
    unsafe { transmute(i16x8::new(e0, e1, e2, e3, e4, e5, e6, e7)) }
}

/// Sets packed 8-bit integers with the supplied values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_epi8)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_epi8(
    e15: i8,
    e14: i8,
    e13: i8,
    e12: i8,
    e11: i8,
    e10: i8,
    e9: i8,
    e8: i8,
    e7: i8,
    e6: i8,
    e5: i8,
    e4: i8,
    e3: i8,
    e2: i8,
    e1: i8,
    e0: i8,
) -> __m128i {
    unsafe {
        #[rustfmt::skip]
        transmute(i8x16::new(
            e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12, e13, e14, e15,
        ))
    }
}

/// Broadcasts 64-bit integer `a` to all elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set1_epi64x)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set1_epi64x(a: i64) -> __m128i {
    i64x2::splat(a).as_m128i()
}

/// Broadcasts 32-bit integer `a` to all elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set1_epi32)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set1_epi32(a: i32) -> __m128i {
    i32x4::splat(a).as_m128i()
}

/// Broadcasts 16-bit integer `a` to all elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set1_epi16)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set1_epi16(a: i16) -> __m128i {
    i16x8::splat(a).as_m128i()
}

/// Broadcasts 8-bit integer `a` to all elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set1_epi8)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set1_epi8(a: i8) -> __m128i {
    i8x16::splat(a).as_m128i()
}

/// Sets packed 32-bit integers with the supplied values in reverse order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setr_epi32)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setr_epi32(e3: i32, e2: i32, e1: i32, e0: i32) -> __m128i {
    _mm_set_epi32(e0, e1, e2, e3)
}

/// Sets packed 16-bit integers with the supplied values in reverse order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setr_epi16)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setr_epi16(
    e7: i16,
    e6: i16,
    e5: i16,
    e4: i16,
    e3: i16,
    e2: i16,
    e1: i16,
    e0: i16,
) -> __m128i {
    _mm_set_epi16(e0, e1, e2, e3, e4, e5, e6, e7)
}

/// Sets packed 8-bit integers with the supplied values in reverse order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setr_epi8)
#[inline]
#[target_feature(enable = "sse2")]
// no particular instruction to test
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setr_epi8(
    e15: i8,
    e14: i8,
    e13: i8,
    e12: i8,
    e11: i8,
    e10: i8,
    e9: i8,
    e8: i8,
    e7: i8,
    e6: i8,
    e5: i8,
    e4: i8,
    e3: i8,
    e2: i8,
    e1: i8,
    e0: i8,
) -> __m128i {
    #[rustfmt::skip]
    _mm_set_epi8(
        e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12, e13, e14, e15,
    )
}

/// Returns a vector with all elements set to zero.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setzero_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(xorps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setzero_si128() -> __m128i {
    const { unsafe { mem::zeroed() } }
}

/// Loads 64-bit integer from memory into first element of returned vector.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadl_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadl_epi64(mem_addr: *const __m128i) -> __m128i {
    _mm_set_epi64x(0, ptr::read_unaligned(mem_addr as *const i64))
}

/// Loads 128-bits of integer data from memory into a new vector.
///
/// `mem_addr` must be aligned on a 16-byte boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_load_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(
    all(test, not(all(target_arch = "x86", target_env = "msvc"))),
    assert_instr(movaps)
)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_load_si128(mem_addr: *const __m128i) -> __m128i {
    *mem_addr
}

/// Loads 128-bits of integer data from memory into a new vector.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadu_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movups))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadu_si128(mem_addr: *const __m128i) -> __m128i {
    let mut dst: __m128i = _mm_undefined_si128();
    ptr::copy_nonoverlapping(
        mem_addr as *const u8,
        ptr::addr_of_mut!(dst) as *mut u8,
        mem::size_of::<__m128i>(),
    );
    dst
}

/// Conditionally store 8-bit integer elements from `a` into memory using
/// `mask` flagged as non-temporal (unlikely to be used again soon).
///
/// Elements are not stored when the highest bit is not set in the
/// corresponding element.
///
/// `mem_addr` should correspond to a 128-bit memory location and does not need
/// to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_maskmoveu_si128)
///
/// # Safety of non-temporal stores
///
/// After using this intrinsic, but before any other access to the memory that this intrinsic
/// mutates, a call to [`_mm_sfence`] must be performed by the thread that used the intrinsic. In
/// particular, functions that call this intrinsic should generally call `_mm_sfence` before they
/// return.
///
/// See [`_mm_sfence`] for details.
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(maskmovdqu))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_maskmoveu_si128(a: __m128i, mask: __m128i, mem_addr: *mut i8) {
    maskmovdqu(a.as_i8x16(), mask.as_i8x16(), mem_addr)
}

/// Stores 128-bits of integer data from `a` into memory.
///
/// `mem_addr` must be aligned on a 16-byte boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_store_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(
    all(test, not(all(target_arch = "x86", target_env = "msvc"))),
    assert_instr(movaps)
)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_store_si128(mem_addr: *mut __m128i, a: __m128i) {
    *mem_addr = a;
}

/// Stores 128-bits of integer data from `a` into memory.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeu_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movups))] // FIXME movdqu expected
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeu_si128(mem_addr: *mut __m128i, a: __m128i) {
    mem_addr.write_unaligned(a);
}

/// Stores the lower 64-bit integer `a` to a memory location.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storel_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storel_epi64(mem_addr: *mut __m128i, a: __m128i) {
    ptr::copy_nonoverlapping(ptr::addr_of!(a) as *const u8, mem_addr as *mut u8, 8);
}

/// Stores a 128-bit integer vector to a 128-bit aligned memory location.
/// To minimize caching, the data is flagged as non-temporal (unlikely to be
/// used again soon).
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_stream_si128)
///
/// # Safety of non-temporal stores
///
/// After using this intrinsic, but before any other access to the memory that this intrinsic
/// mutates, a call to [`_mm_sfence`] must be performed by the thread that used the intrinsic. In
/// particular, functions that call this intrinsic should generally call `_mm_sfence` before they
/// return.
///
/// See [`_mm_sfence`] for details.
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movntdq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_stream_si128(mem_addr: *mut __m128i, a: __m128i) {
    // see #1541, we should use inline asm to be sure, because LangRef isn't clear enough
    crate::arch::asm!(
        vps!("movntdq",  ",{a}"),
        p = in(reg) mem_addr,
        a = in(xmm_reg) a,
        options(nostack, preserves_flags),
    );
}

/// Stores a 32-bit integer value in the specified memory location.
/// To minimize caching, the data is flagged as non-temporal (unlikely to be
/// used again soon).
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_stream_si32)
///
/// # Safety of non-temporal stores
///
/// After using this intrinsic, but before any other access to the memory that this intrinsic
/// mutates, a call to [`_mm_sfence`] must be performed by the thread that used the intrinsic. In
/// particular, functions that call this intrinsic should generally call `_mm_sfence` before they
/// return.
///
/// See [`_mm_sfence`] for details.
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movnti))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_stream_si32(mem_addr: *mut i32, a: i32) {
    // see #1541, we should use inline asm to be sure, because LangRef isn't clear enough
    crate::arch::asm!(
        vps!("movnti", ",{a:e}"), // `:e` for 32bit value
        p = in(reg) mem_addr,
        a = in(reg) a,
        options(nostack, preserves_flags),
    );
}

/// Returns a vector where the low element is extracted from `a` and its upper
/// element is zero.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_move_epi64)
#[inline]
#[target_feature(enable = "sse2")]
// FIXME movd on msvc, movd on i686
#[cfg_attr(all(test, target_arch = "x86_64"), assert_instr(movq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_move_epi64(a: __m128i) -> __m128i {
    unsafe {
        let r: i64x2 = simd_shuffle!(a.as_i64x2(), i64x2::ZERO, [0, 2]);
        transmute(r)
    }
}

/// Converts packed 16-bit integers from `a` and `b` to packed 8-bit integers
/// using signed saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_packs_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(packsswb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_packs_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(packsswb(a.as_i16x8(), b.as_i16x8())) }
}

/// Converts packed 32-bit integers from `a` and `b` to packed 16-bit integers
/// using signed saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_packs_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(packssdw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_packs_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(packssdw(a.as_i32x4(), b.as_i32x4())) }
}

/// Converts packed 16-bit integers from `a` and `b` to packed 8-bit integers
/// using unsigned saturation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_packus_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(packuswb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_packus_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute(packuswb(a.as_i16x8(), b.as_i16x8())) }
}

/// Returns the `imm8` element of `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_extract_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pextrw, IMM8 = 7))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_extract_epi16<const IMM8: i32>(a: __m128i) -> i32 {
    static_assert_uimm_bits!(IMM8, 3);
    unsafe { simd_extract!(a.as_u16x8(), IMM8 as u32, u16) as i32 }
}

/// Returns a new vector where the `imm8` element of `a` is replaced with `i`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_insert_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pinsrw, IMM8 = 7))]
#[rustc_legacy_const_generics(2)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_insert_epi16<const IMM8: i32>(a: __m128i, i: i32) -> __m128i {
    static_assert_uimm_bits!(IMM8, 3);
    unsafe { transmute(simd_insert!(a.as_i16x8(), IMM8 as u32, i as i16)) }
}

/// Returns a mask of the most significant bit of each element in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_movemask_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pmovmskb))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_movemask_epi8(a: __m128i) -> i32 {
    unsafe {
        let z = i8x16::ZERO;
        let m: i8x16 = simd_lt(a.as_i8x16(), z);
        simd_bitmask::<_, u16>(m) as u32 as i32
    }
}

/// Shuffles 32-bit integers in `a` using the control in `IMM8`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_shuffle_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pshufd, IMM8 = 9))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_shuffle_epi32<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        let a = a.as_i32x4();
        let x: i32x4 = simd_shuffle!(
            a,
            a,
            [
                IMM8 as u32 & 0b11,
                (IMM8 as u32 >> 2) & 0b11,
                (IMM8 as u32 >> 4) & 0b11,
                (IMM8 as u32 >> 6) & 0b11,
            ],
        );
        transmute(x)
    }
}

/// Shuffles 16-bit integers in the high 64 bits of `a` using the control in
/// `IMM8`.
///
/// Put the results in the high 64 bits of the returned vector, with the low 64
/// bits being copied from `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_shufflehi_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pshufhw, IMM8 = 9))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_shufflehi_epi16<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        let a = a.as_i16x8();
        let x: i16x8 = simd_shuffle!(
            a,
            a,
            [
                0,
                1,
                2,
                3,
                (IMM8 as u32 & 0b11) + 4,
                ((IMM8 as u32 >> 2) & 0b11) + 4,
                ((IMM8 as u32 >> 4) & 0b11) + 4,
                ((IMM8 as u32 >> 6) & 0b11) + 4,
            ],
        );
        transmute(x)
    }
}

/// Shuffles 16-bit integers in the low 64 bits of `a` using the control in
/// `IMM8`.
///
/// Put the results in the low 64 bits of the returned vector, with the high 64
/// bits being copied from `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_shufflelo_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(pshuflw, IMM8 = 9))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_shufflelo_epi16<const IMM8: i32>(a: __m128i) -> __m128i {
    static_assert_uimm_bits!(IMM8, 8);
    unsafe {
        let a = a.as_i16x8();
        let x: i16x8 = simd_shuffle!(
            a,
            a,
            [
                IMM8 as u32 & 0b11,
                (IMM8 as u32 >> 2) & 0b11,
                (IMM8 as u32 >> 4) & 0b11,
                (IMM8 as u32 >> 6) & 0b11,
                4,
                5,
                6,
                7,
            ],
        );
        transmute(x)
    }
}

/// Unpacks and interleave 8-bit integers from the high half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpackhi_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(punpckhbw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpackhi_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        transmute::<i8x16, _>(simd_shuffle!(
            a.as_i8x16(),
            b.as_i8x16(),
            [8, 24, 9, 25, 10, 26, 11, 27, 12, 28, 13, 29, 14, 30, 15, 31],
        ))
    }
}

/// Unpacks and interleave 16-bit integers from the high half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpackhi_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(punpckhwd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpackhi_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let x = simd_shuffle!(a.as_i16x8(), b.as_i16x8(), [4, 12, 5, 13, 6, 14, 7, 15]);
        transmute::<i16x8, _>(x)
    }
}

/// Unpacks and interleave 32-bit integers from the high half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpackhi_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(unpckhps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpackhi_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i32x4, _>(simd_shuffle!(a.as_i32x4(), b.as_i32x4(), [2, 6, 3, 7])) }
}

/// Unpacks and interleave 64-bit integers from the high half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpackhi_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(unpckhpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpackhi_epi64(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i64x2, _>(simd_shuffle!(a.as_i64x2(), b.as_i64x2(), [1, 3])) }
}

/// Unpacks and interleave 8-bit integers from the low half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpacklo_epi8)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(punpcklbw))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpacklo_epi8(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        transmute::<i8x16, _>(simd_shuffle!(
            a.as_i8x16(),
            b.as_i8x16(),
            [0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23],
        ))
    }
}

/// Unpacks and interleave 16-bit integers from the low half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpacklo_epi16)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(punpcklwd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpacklo_epi16(a: __m128i, b: __m128i) -> __m128i {
    unsafe {
        let x = simd_shuffle!(a.as_i16x8(), b.as_i16x8(), [0, 8, 1, 9, 2, 10, 3, 11]);
        transmute::<i16x8, _>(x)
    }
}

/// Unpacks and interleave 32-bit integers from the low half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpacklo_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(unpcklps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpacklo_epi32(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i32x4, _>(simd_shuffle!(a.as_i32x4(), b.as_i32x4(), [0, 4, 1, 5])) }
}

/// Unpacks and interleave 64-bit integers from the low half of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpacklo_epi64)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movlhps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpacklo_epi64(a: __m128i, b: __m128i) -> __m128i {
    unsafe { transmute::<i64x2, _>(simd_shuffle!(a.as_i64x2(), b.as_i64x2(), [0, 2])) }
}

/// Returns a new vector with the low element of `a` replaced by the sum of the
/// low elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(addsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(a, 0, _mm_cvtsd_f64(a) + _mm_cvtsd_f64(b)) }
}

/// Adds packed double-precision (64-bit) floating-point elements in `a` and
/// `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_add_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(addpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_add_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_add(a, b) }
}

/// Returns a new vector with the low element of `a` replaced by the result of
/// diving the lower element of `a` by the lower element of `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_div_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(divsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_div_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(a, 0, _mm_cvtsd_f64(a) / _mm_cvtsd_f64(b)) }
}

/// Divide packed double-precision (64-bit) floating-point elements in `a` by
/// packed elements in `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_div_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(divpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_div_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_div(a, b) }
}

/// Returns a new vector with the low element of `a` replaced by the maximum
/// of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_max_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(maxsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_max_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { maxsd(a, b) }
}

/// Returns a new vector with the maximum values from corresponding elements in
/// `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_max_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(maxpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_max_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { maxpd(a, b) }
}

/// Returns a new vector with the low element of `a` replaced by the minimum
/// of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_min_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(minsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_min_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { minsd(a, b) }
}

/// Returns a new vector with the minimum values from corresponding elements in
/// `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_min_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(minpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_min_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { minpd(a, b) }
}

/// Returns a new vector with the low element of `a` replaced by multiplying the
/// low elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mul_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(mulsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mul_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(a, 0, _mm_cvtsd_f64(a) * _mm_cvtsd_f64(b)) }
}

/// Multiplies packed double-precision (64-bit) floating-point elements in `a`
/// and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_mul_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(mulpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_mul_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_mul(a, b) }
}

/// Returns a new vector with the low element of `a` replaced by the square
/// root of the lower element `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sqrt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(sqrtsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sqrt_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(a, 0, sqrtf64(_mm_cvtsd_f64(b))) }
}

/// Returns a new vector with the square root of each of the values in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sqrt_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(sqrtpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_sqrt_pd(a: __m128d) -> __m128d {
    unsafe { simd_fsqrt(a) }
}

/// Returns a new vector with the low element of `a` replaced by subtracting the
/// low element by `b` from the low element of `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(subsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(a, 0, _mm_cvtsd_f64(a) - _mm_cvtsd_f64(b)) }
}

/// Subtract packed double-precision (64-bit) floating-point elements in `b`
/// from `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_sub_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(subpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_sub_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_sub(a, b) }
}

/// Computes the bitwise AND of packed double-precision (64-bit) floating-point
/// elements in `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_and_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(andps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_and_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe {
        let a: __m128i = transmute(a);
        let b: __m128i = transmute(b);
        transmute(_mm_and_si128(a, b))
    }
}

/// Computes the bitwise NOT of `a` and then AND with `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_andnot_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(andnps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_andnot_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe {
        let a: __m128i = transmute(a);
        let b: __m128i = transmute(b);
        transmute(_mm_andnot_si128(a, b))
    }
}

/// Computes the bitwise OR of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_or_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(orps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_or_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe {
        let a: __m128i = transmute(a);
        let b: __m128i = transmute(b);
        transmute(_mm_or_si128(a, b))
    }
}

/// Computes the bitwise XOR of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_xor_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(xorps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_xor_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe {
        let a: __m128i = transmute(a);
        let b: __m128i = transmute(b);
        transmute(_mm_xor_si128(a, b))
    }
}

/// Returns a new vector with the low element of `a` replaced by the equality
/// comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpeq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpeqsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpeq_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 0) }
}

/// Returns a new vector with the low element of `a` replaced by the less-than
/// comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmplt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpltsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmplt_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 1) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// less-than-or-equal comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmple_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmplesd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmple_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 2) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// greater-than comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpgt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpltsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpgt_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(_mm_cmplt_sd(b, a), 1, simd_extract!(a, 1, f64)) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// greater-than-or-equal comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpge_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmplesd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpge_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(_mm_cmple_sd(b, a), 1, simd_extract!(a, 1, f64)) }
}

/// Returns a new vector with the low element of `a` replaced by the result
/// of comparing both of the lower elements of `a` and `b` to `NaN`. If
/// neither are equal to `NaN` then `0xFFFFFFFFFFFFFFFF` is used and `0`
/// otherwise.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpord_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpordsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpord_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 7) }
}

/// Returns a new vector with the low element of `a` replaced by the result of
/// comparing both of the lower elements of `a` and `b` to `NaN`. If either is
/// equal to `NaN` then `0xFFFFFFFFFFFFFFFF` is used and `0` otherwise.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpunord_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpunordsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpunord_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 3) }
}

/// Returns a new vector with the low element of `a` replaced by the not-equal
/// comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpneq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpneqsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpneq_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 4) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// not-less-than comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnlt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnltsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnlt_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 5) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// not-less-than-or-equal comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnle_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnlesd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnle_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmpsd(a, b, 6) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// not-greater-than comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpngt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnltsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpngt_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(_mm_cmpnlt_sd(b, a), 1, simd_extract!(a, 1, f64)) }
}

/// Returns a new vector with the low element of `a` replaced by the
/// not-greater-than-or-equal comparison of the lower elements of `a` and `b`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnge_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnlesd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnge_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_insert!(_mm_cmpnle_sd(b, a), 1, simd_extract!(a, 1, f64)) }
}

/// Compares corresponding elements in `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpeq_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpeqpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpeq_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 0) }
}

/// Compares corresponding elements in `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmplt_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpltpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmplt_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 1) }
}

/// Compares corresponding elements in `a` and `b` for less-than-or-equal
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmple_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmplepd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmple_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 2) }
}

/// Compares corresponding elements in `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpgt_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpltpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpgt_pd(a: __m128d, b: __m128d) -> __m128d {
    _mm_cmplt_pd(b, a)
}

/// Compares corresponding elements in `a` and `b` for greater-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpge_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmplepd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpge_pd(a: __m128d, b: __m128d) -> __m128d {
    _mm_cmple_pd(b, a)
}

/// Compares corresponding elements in `a` and `b` to see if neither is `NaN`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpord_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpordpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpord_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 7) }
}

/// Compares corresponding elements in `a` and `b` to see if either is `NaN`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpunord_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpunordpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpunord_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 3) }
}

/// Compares corresponding elements in `a` and `b` for not-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpneq_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpneqpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpneq_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 4) }
}

/// Compares corresponding elements in `a` and `b` for not-less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnlt_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnltpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnlt_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 5) }
}

/// Compares corresponding elements in `a` and `b` for not-less-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnle_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnlepd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnle_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { cmppd(a, b, 6) }
}

/// Compares corresponding elements in `a` and `b` for not-greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpngt_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnltpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpngt_pd(a: __m128d, b: __m128d) -> __m128d {
    _mm_cmpnlt_pd(b, a)
}

/// Compares corresponding elements in `a` and `b` for
/// not-greater-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cmpnge_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cmpnlepd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cmpnge_pd(a: __m128d, b: __m128d) -> __m128d {
    _mm_cmpnle_pd(b, a)
}

/// Compares the lower element of `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comieq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comieq_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comieqsd(a, b) }
}

/// Compares the lower element of `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comilt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comilt_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comiltsd(a, b) }
}

/// Compares the lower element of `a` and `b` for less-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comile_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comile_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comilesd(a, b) }
}

/// Compares the lower element of `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comigt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comigt_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comigtsd(a, b) }
}

/// Compares the lower element of `a` and `b` for greater-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comige_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comige_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comigesd(a, b) }
}

/// Compares the lower element of `a` and `b` for not-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_comineq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(comisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_comineq_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { comineqsd(a, b) }
}

/// Compares the lower element of `a` and `b` for equality.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomieq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomieq_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomieqsd(a, b) }
}

/// Compares the lower element of `a` and `b` for less-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomilt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomilt_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomiltsd(a, b) }
}

/// Compares the lower element of `a` and `b` for less-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomile_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomile_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomilesd(a, b) }
}

/// Compares the lower element of `a` and `b` for greater-than.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomigt_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomigt_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomigtsd(a, b) }
}

/// Compares the lower element of `a` and `b` for greater-than-or-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomige_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomige_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomigesd(a, b) }
}

/// Compares the lower element of `a` and `b` for not-equal.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_ucomineq_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(ucomisd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_ucomineq_sd(a: __m128d, b: __m128d) -> i32 {
    unsafe { ucomineqsd(a, b) }
}

/// Converts packed double-precision (64-bit) floating-point elements in `a` to
/// packed single-precision (32-bit) floating-point elements
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtpd_ps)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtpd2ps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtpd_ps(a: __m128d) -> __m128 {
    unsafe {
        let r = simd_cast::<_, f32x2>(a.as_f64x2());
        let zero = f32x2::ZERO;
        transmute::<f32x4, _>(simd_shuffle!(r, zero, [0, 1, 2, 3]))
    }
}

/// Converts packed single-precision (32-bit) floating-point elements in `a` to
/// packed
/// double-precision (64-bit) floating-point elements.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtps_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtps2pd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtps_pd(a: __m128) -> __m128d {
    unsafe {
        let a = a.as_f32x4();
        transmute(simd_cast::<f32x2, f64x2>(simd_shuffle!(a, a, [0, 1])))
    }
}

/// Converts packed double-precision (64-bit) floating-point elements in `a` to
/// packed 32-bit integers.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtpd_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtpd2dq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvtpd_epi32(a: __m128d) -> __m128i {
    unsafe { transmute(cvtpd2dq(a)) }
}

/// Converts the lower double-precision (64-bit) floating-point element in a to
/// a 32-bit integer.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsd_si32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtsd2si))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvtsd_si32(a: __m128d) -> i32 {
    unsafe { cvtsd2si(a) }
}

/// Converts the lower double-precision (64-bit) floating-point element in `b`
/// to a single-precision (32-bit) floating-point element, store the result in
/// the lower element of the return value, and copies the upper element from `a`
/// to the upper element the return value.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsd_ss)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtsd2ss))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvtsd_ss(a: __m128, b: __m128d) -> __m128 {
    unsafe { cvtsd2ss(a, b) }
}

/// Returns the lower double-precision (64-bit) floating-point element of `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtsd_f64)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtsd_f64(a: __m128d) -> f64 {
    unsafe { simd_extract!(a, 0) }
}

/// Converts the lower single-precision (32-bit) floating-point element in `b`
/// to a double-precision (64-bit) floating-point element, store the result in
/// the lower element of the return value, and copies the upper element from `a`
/// to the upper element the return value.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtss_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvtss2sd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_cvtss_sd(a: __m128d, b: __m128) -> __m128d {
    unsafe {
        let elt: f32 = simd_extract!(b, 0);
        simd_insert!(a, 0, elt as f64)
    }
}

/// Converts packed double-precision (64-bit) floating-point elements in `a` to
/// packed 32-bit integers with truncation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvttpd_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvttpd2dq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvttpd_epi32(a: __m128d) -> __m128i {
    unsafe { transmute(cvttpd2dq(a)) }
}

/// Converts the lower double-precision (64-bit) floating-point element in `a`
/// to a 32-bit integer with truncation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvttsd_si32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvttsd2si))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvttsd_si32(a: __m128d) -> i32 {
    unsafe { cvttsd2si(a) }
}

/// Converts packed single-precision (32-bit) floating-point elements in `a` to
/// packed 32-bit integers with truncation.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvttps_epi32)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(cvttps2dq))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub fn _mm_cvttps_epi32(a: __m128) -> __m128i {
    unsafe { transmute(cvttps2dq(a)) }
}

/// Copies double-precision (64-bit) floating-point element `a` to the lower
/// element of the packed 64-bit return value.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_sd(a: f64) -> __m128d {
    _mm_set_pd(0.0, a)
}

/// Broadcasts double-precision (64-bit) floating-point value a to all elements
/// of the return value.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set1_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set1_pd(a: f64) -> __m128d {
    _mm_set_pd(a, a)
}

/// Broadcasts double-precision (64-bit) floating-point value a to all elements
/// of the return value.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_pd1)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_pd1(a: f64) -> __m128d {
    _mm_set_pd(a, a)
}

/// Sets packed double-precision (64-bit) floating-point elements in the return
/// value with the supplied values.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_set_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_set_pd(a: f64, b: f64) -> __m128d {
    __m128d([b, a])
}

/// Sets packed double-precision (64-bit) floating-point elements in the return
/// value with the supplied values in reverse order.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setr_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setr_pd(a: f64, b: f64) -> __m128d {
    _mm_set_pd(b, a)
}

/// Returns packed double-precision (64-bit) floating-point elements with all
/// zeros.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_setzero_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(xorp))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_setzero_pd() -> __m128d {
    const { unsafe { mem::zeroed() } }
}

/// Returns a mask of the most significant bit of each element in `a`.
///
/// The mask is stored in the 2 least significant bits of the return value.
/// All other bits are set to `0`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_movemask_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movmskpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_movemask_pd(a: __m128d) -> i32 {
    // Propagate the highest bit to the rest, because simd_bitmask
    // requires all-1 or all-0.
    unsafe {
        let mask: i64x2 = simd_lt(transmute(a), i64x2::ZERO);
        simd_bitmask::<i64x2, u8>(mask) as i32
    }
}

/// Loads 128-bits (composed of 2 packed double-precision (64-bit)
/// floating-point elements) from memory into the returned vector.
/// `mem_addr` must be aligned on a 16-byte boundary or a general-protection
/// exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_load_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(
    all(test, not(all(target_arch = "x86", target_env = "msvc"))),
    assert_instr(movaps)
)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_load_pd(mem_addr: *const f64) -> __m128d {
    *(mem_addr as *const __m128d)
}

/// Loads a 64-bit double-precision value to the low element of a
/// 128-bit integer vector and clears the upper element.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_load_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_load_sd(mem_addr: *const f64) -> __m128d {
    _mm_setr_pd(*mem_addr, 0.)
}

/// Loads a double-precision value into the high-order bits of a 128-bit
/// vector of `[2 x double]`. The low-order bits are copied from the low-order
/// bits of the first operand.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadh_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movhps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadh_pd(a: __m128d, mem_addr: *const f64) -> __m128d {
    _mm_setr_pd(simd_extract!(a, 0), *mem_addr)
}

/// Loads a double-precision value into the low-order bits of a 128-bit
/// vector of `[2 x double]`. The high-order bits are copied from the
/// high-order bits of the first operand.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadl_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movlps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadl_pd(a: __m128d, mem_addr: *const f64) -> __m128d {
    _mm_setr_pd(*mem_addr, simd_extract!(a, 1))
}

/// Stores a 128-bit floating point vector of `[2 x double]` to a 128-bit
/// aligned memory location.
/// To minimize caching, the data is flagged as non-temporal (unlikely to be
/// used again soon).
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_stream_pd)
///
/// # Safety of non-temporal stores
///
/// After using this intrinsic, but before any other access to the memory that this intrinsic
/// mutates, a call to [`_mm_sfence`] must be performed by the thread that used the intrinsic. In
/// particular, functions that call this intrinsic should generally call `_mm_sfence` before they
/// return.
///
/// See [`_mm_sfence`] for details.
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movntpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe fn _mm_stream_pd(mem_addr: *mut f64, a: __m128d) {
    // see #1541, we should use inline asm to be sure, because LangRef isn't clear enough
    crate::arch::asm!(
        vps!("movntpd", ",{a}"),
        p = in(reg) mem_addr,
        a = in(xmm_reg) a,
        options(nostack, preserves_flags),
    );
}

/// Stores the lower 64 bits of a 128-bit vector of `[2 x double]` to a
/// memory location.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_store_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movlps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_store_sd(mem_addr: *mut f64, a: __m128d) {
    *mem_addr = simd_extract!(a, 0)
}

/// Stores 128-bits (composed of 2 packed double-precision (64-bit)
/// floating-point elements) from `a` into memory. `mem_addr` must be aligned
/// on a 16-byte boundary or a general-protection exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_store_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(
    all(test, not(all(target_arch = "x86", target_env = "msvc"))),
    assert_instr(movaps)
)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_store_pd(mem_addr: *mut f64, a: __m128d) {
    *(mem_addr as *mut __m128d) = a;
}

/// Stores 128-bits (composed of 2 packed double-precision (64-bit)
/// floating-point elements) from `a` into memory.
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeu_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movups))] // FIXME movupd expected
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeu_pd(mem_addr: *mut f64, a: __m128d) {
    mem_addr.cast::<__m128d>().write_unaligned(a);
}

/// Store 16-bit integer from the first element of a into memory.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeu_si16)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_updates", since = "1.82.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeu_si16(mem_addr: *mut u8, a: __m128i) {
    ptr::write_unaligned(mem_addr as *mut i16, simd_extract(a.as_i16x8(), 0))
}

/// Store 32-bit integer from the first element of a into memory.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeu_si32)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_updates", since = "1.82.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeu_si32(mem_addr: *mut u8, a: __m128i) {
    ptr::write_unaligned(mem_addr as *mut i32, simd_extract(a.as_i32x4(), 0))
}

/// Store 64-bit integer from the first element of a into memory.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeu_si64)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_updates", since = "1.82.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeu_si64(mem_addr: *mut u8, a: __m128i) {
    ptr::write_unaligned(mem_addr as *mut i64, simd_extract(a.as_i64x2(), 0))
}

/// Stores the lower double-precision (64-bit) floating-point element from `a`
/// into 2 contiguous elements in memory. `mem_addr` must be aligned on a
/// 16-byte boundary or a general-protection exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_store1_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_store1_pd(mem_addr: *mut f64, a: __m128d) {
    let b: __m128d = simd_shuffle!(a, a, [0, 0]);
    *(mem_addr as *mut __m128d) = b;
}

/// Stores the lower double-precision (64-bit) floating-point element from `a`
/// into 2 contiguous elements in memory. `mem_addr` must be aligned on a
/// 16-byte boundary or a general-protection exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_store_pd1)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_store_pd1(mem_addr: *mut f64, a: __m128d) {
    let b: __m128d = simd_shuffle!(a, a, [0, 0]);
    *(mem_addr as *mut __m128d) = b;
}

/// Stores 2 double-precision (64-bit) floating-point elements from `a` into
/// memory in reverse order.
/// `mem_addr` must be aligned on a 16-byte boundary or a general-protection
/// exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storer_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[allow(clippy::cast_ptr_alignment)]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storer_pd(mem_addr: *mut f64, a: __m128d) {
    let b: __m128d = simd_shuffle!(a, a, [1, 0]);
    *(mem_addr as *mut __m128d) = b;
}

/// Stores the upper 64 bits of a 128-bit vector of `[2 x double]` to a
/// memory location.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storeh_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movhps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storeh_pd(mem_addr: *mut f64, a: __m128d) {
    *mem_addr = simd_extract!(a, 1);
}

/// Stores the lower 64 bits of a 128-bit vector of `[2 x double]` to a
/// memory location.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_storel_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movlps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_storel_pd(mem_addr: *mut f64, a: __m128d) {
    *mem_addr = simd_extract!(a, 0);
}

/// Loads a double-precision (64-bit) floating-point element from memory
/// into both elements of returned vector.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_load1_pd)
#[inline]
#[target_feature(enable = "sse2")]
// #[cfg_attr(test, assert_instr(movapd))] // FIXME LLVM uses different codegen
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_load1_pd(mem_addr: *const f64) -> __m128d {
    let d = *mem_addr;
    _mm_setr_pd(d, d)
}

/// Loads a double-precision (64-bit) floating-point element from memory
/// into both elements of returned vector.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_load_pd1)
#[inline]
#[target_feature(enable = "sse2")]
// #[cfg_attr(test, assert_instr(movapd))] // FIXME same as _mm_load1_pd
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_load_pd1(mem_addr: *const f64) -> __m128d {
    _mm_load1_pd(mem_addr)
}

/// Loads 2 double-precision (64-bit) floating-point elements from memory into
/// the returned vector in reverse order. `mem_addr` must be aligned on a
/// 16-byte boundary or a general-protection exception may be generated.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadr_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(
    all(test, not(all(target_arch = "x86", target_env = "msvc"))),
    assert_instr(movaps)
)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadr_pd(mem_addr: *const f64) -> __m128d {
    let a = _mm_load_pd(mem_addr);
    simd_shuffle!(a, a, [1, 0])
}

/// Loads 128-bits (composed of 2 packed double-precision (64-bit)
/// floating-point elements) from memory into the returned vector.
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadu_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movups))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadu_pd(mem_addr: *const f64) -> __m128d {
    let mut dst = _mm_undefined_pd();
    ptr::copy_nonoverlapping(
        mem_addr as *const u8,
        ptr::addr_of_mut!(dst) as *mut u8,
        mem::size_of::<__m128d>(),
    );
    dst
}

/// Loads unaligned 16-bits of integer data from memory into new vector.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadu_si16)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_updates", since = "1.82.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadu_si16(mem_addr: *const u8) -> __m128i {
    transmute(i16x8::new(
        ptr::read_unaligned(mem_addr as *const i16),
        0,
        0,
        0,
        0,
        0,
        0,
        0,
    ))
}

/// Loads unaligned 32-bits of integer data from memory into new vector.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadu_si32)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_updates", since = "1.82.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadu_si32(mem_addr: *const u8) -> __m128i {
    transmute(i32x4::new(
        ptr::read_unaligned(mem_addr as *const i32),
        0,
        0,
        0,
    ))
}

/// Loads unaligned 64-bits of integer data from memory into new vector.
///
/// `mem_addr` does not need to be aligned on any particular boundary.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_loadu_si64)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86_mm_loadu_si64", since = "1.46.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const unsafe fn _mm_loadu_si64(mem_addr: *const u8) -> __m128i {
    transmute(i64x2::new(ptr::read_unaligned(mem_addr as *const i64), 0))
}

/// Constructs a 128-bit floating-point vector of `[2 x double]` from two
/// 128-bit vector parameters of `[2 x double]`, using the immediate-value
/// parameter as a specifier.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_shuffle_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(shufps, MASK = 2))]
#[rustc_legacy_const_generics(2)]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_shuffle_pd<const MASK: i32>(a: __m128d, b: __m128d) -> __m128d {
    static_assert_uimm_bits!(MASK, 8);
    unsafe { simd_shuffle!(a, b, [MASK as u32 & 0b1, ((MASK as u32 >> 1) & 0b1) + 2]) }
}

/// Constructs a 128-bit floating-point vector of `[2 x double]`. The lower
/// 64 bits are set to the lower 64 bits of the second parameter. The upper
/// 64 bits are set to the upper 64 bits of the first parameter.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_move_sd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movsd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_move_sd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { _mm_setr_pd(simd_extract!(b, 0), simd_extract!(a, 1)) }
}

/// Casts a 128-bit floating-point vector of `[2 x double]` into a 128-bit
/// floating-point vector of `[4 x float]`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castpd_ps)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castpd_ps(a: __m128d) -> __m128 {
    unsafe { transmute(a) }
}

/// Casts a 128-bit floating-point vector of `[2 x double]` into a 128-bit
/// integer vector.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castpd_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castpd_si128(a: __m128d) -> __m128i {
    unsafe { transmute(a) }
}

/// Casts a 128-bit floating-point vector of `[4 x float]` into a 128-bit
/// floating-point vector of `[2 x double]`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castps_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castps_pd(a: __m128) -> __m128d {
    unsafe { transmute(a) }
}

/// Casts a 128-bit floating-point vector of `[4 x float]` into a 128-bit
/// integer vector.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castps_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castps_si128(a: __m128) -> __m128i {
    unsafe { transmute(a) }
}

/// Casts a 128-bit integer vector into a 128-bit floating-point vector
/// of `[2 x double]`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castsi128_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castsi128_pd(a: __m128i) -> __m128d {
    unsafe { transmute(a) }
}

/// Casts a 128-bit integer vector into a 128-bit floating-point vector
/// of `[4 x float]`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_castsi128_ps)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_castsi128_ps(a: __m128i) -> __m128 {
    unsafe { transmute(a) }
}

/// Returns vector of type __m128d with indeterminate elements.with indetermination elements.
/// Despite using the word "undefined" (following Intel's naming scheme), this non-deterministically
/// picks some valid value and is not equivalent to [`mem::MaybeUninit`].
/// In practice, this is typically equivalent to [`mem::zeroed`].
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_undefined_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_undefined_pd() -> __m128d {
    const { unsafe { mem::zeroed() } }
}

/// Returns vector of type __m128i with indeterminate elements.with indetermination elements.
/// Despite using the word "undefined" (following Intel's naming scheme), this non-deterministically
/// picks some valid value and is not equivalent to [`mem::MaybeUninit`].
/// In practice, this is typically equivalent to [`mem::zeroed`].
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_undefined_si128)
#[inline]
#[target_feature(enable = "sse2")]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_undefined_si128() -> __m128i {
    const { unsafe { mem::zeroed() } }
}

/// The resulting `__m128d` element is composed by the low-order values of
/// the two `__m128d` interleaved input elements, i.e.:
///
/// * The `[127:64]` bits are copied from the `[127:64]` bits of the second input
/// * The `[63:0]` bits are copied from the `[127:64]` bits of the first input
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpackhi_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(unpckhpd))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpackhi_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_shuffle!(a, b, [1, 3]) }
}

/// The resulting `__m128d` element is composed by the high-order values of
/// the two `__m128d` interleaved input elements, i.e.:
///
/// * The `[127:64]` bits are copied from the `[63:0]` bits of the second input
/// * The `[63:0]` bits are copied from the `[63:0]` bits of the first input
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_unpacklo_pd)
#[inline]
#[target_feature(enable = "sse2")]
#[cfg_attr(test, assert_instr(movlhps))]
#[stable(feature = "simd_x86", since = "1.27.0")]
#[rustc_const_unstable(feature = "stdarch_const_x86", issue = "149298")]
pub const fn _mm_unpacklo_pd(a: __m128d, b: __m128d) -> __m128d {
    unsafe { simd_shuffle!(a, b, [0, 2]) }
}

#[allow(improper_ctypes)]
unsafe extern "C" {
    #[link_name = "llvm.x86.sse2.pause"]
    fn pause();
    #[link_name = "llvm.x86.sse2.clflush"]
    fn clflush(p: *const u8);
    #[link_name = "llvm.x86.sse2.lfence"]
    fn lfence();
    #[link_name = "llvm.x86.sse2.mfence"]
    fn mfence();
    #[link_name = "llvm.x86.sse2.pmadd.wd"]
    fn pmaddwd(a: i16x8, b: i16x8) -> i32x4;
    #[link_name = "llvm.x86.sse2.psad.bw"]
    fn psadbw(a: u8x16, b: u8x16) -> u64x2;
    #[link_name = "llvm.x86.sse2.psll.w"]
    fn psllw(a: i16x8, count: i16x8) -> i16x8;
    #[link_name = "llvm.x86.sse2.psll.d"]
    fn pslld(a: i32x4, count: i32x4) -> i32x4;
    #[link_name = "llvm.x86.sse2.psll.q"]
    fn psllq(a: i64x2, count: i64x2) -> i64x2;
    #[link_name = "llvm.x86.sse2.psra.w"]
    fn psraw(a: i16x8, count: i16x8) -> i16x8;
    #[link_name = "llvm.x86.sse2.psra.d"]
    fn psrad(a: i32x4, count: i32x4) -> i32x4;
    #[link_name = "llvm.x86.sse2.psrl.w"]
    fn psrlw(a: i16x8, count: i16x8) -> i16x8;
    #[link_name = "llvm.x86.sse2.psrl.d"]
    fn psrld(a: i32x4, count: i32x4) -> i32x4;
    #[link_name = "llvm.x86.sse2.psrl.q"]
    fn psrlq(a: i64x2, count: i64x2) -> i64x2;
    #[link_name = "llvm.x86.sse2.cvtps2dq"]
    fn cvtps2dq(a: __m128) -> i32x4;
    #[link_name = "llvm.x86.sse2.maskmov.dqu"]
    fn maskmovdqu(a: i8x16, mask: i8x16, mem_addr: *mut i8);
    #[link_name = "llvm.x86.sse2.packsswb.128"]
    fn packsswb(a: i16x8, b: i16x8) -> i8x16;
    #[link_name = "llvm.x86.sse2.packssdw.128"]
    fn packssdw(a: i32x4, b: i32x4) -> i16x8;
    #[link_name = "llvm.x86.sse2.packuswb.128"]
    fn packuswb(a: i16x8, b: i16x8) -> u8x16;
    #[link_name = "llvm.x86.sse2.max.sd"]
    fn maxsd(a: __m128d, b: __m128d) -> __m128d;
    #[link_name = "llvm.x86.sse2.max.pd"]
    fn maxpd(a: __m128d, b: __m128d) -> __m128d;
    #[link_name = "llvm.x86.sse2.min.sd"]
    fn minsd(a: __m128d, b: __m128d) -> __m128d;
    #[link_name = "llvm.x86.sse2.min.pd"]
    fn minpd(a: __m128d, b: __m128d) -> __m128d;
    #[link_name = "llvm.x86.sse2.cmp.sd"]
    fn cmpsd(a: __m128d, b: __m128d, imm8: i8) -> __m128d;
    #[link_name = "llvm.x86.sse2.cmp.pd"]
    fn cmppd(a: __m128d, b: __m128d, imm8: i8) -> __m128d;
    #[link_name = "llvm.x86.sse2.comieq.sd"]
    fn comieqsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.comilt.sd"]
    fn comiltsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.comile.sd"]
    fn comilesd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.comigt.sd"]
    fn comigtsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.comige.sd"]
    fn comigesd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.comineq.sd"]
    fn comineqsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomieq.sd"]
    fn ucomieqsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomilt.sd"]
    fn ucomiltsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomile.sd"]
    fn ucomilesd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomigt.sd"]
    fn ucomigtsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomige.sd"]
    fn ucomigesd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.ucomineq.sd"]
    fn ucomineqsd(a: __m128d, b: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.cvtpd2dq"]
    fn cvtpd2dq(a: __m128d) -> i32x4;
    #[link_name = "llvm.x86.sse2.cvtsd2si"]
    fn cvtsd2si(a: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.cvtsd2ss"]
    fn cvtsd2ss(a: __m128, b: __m128d) -> __m128;
    #[link_name = "llvm.x86.sse2.cvttpd2dq"]
    fn cvttpd2dq(a: __m128d) -> i32x4;
    #[link_name = "llvm.x86.sse2.cvttsd2si"]
    fn cvttsd2si(a: __m128d) -> i32;
    #[link_name = "llvm.x86.sse2.cvttps2dq"]
    fn cvttps2dq(a: __m128) -> i32x4;
}

#[cfg(test)]
mod tests {
    use crate::core_arch::assert_eq_const as assert_eq;
    use crate::{
        core_arch::{simd::*, x86::*},
        hint::black_box,
    };
    use std::{boxed, f32, f64, mem, ptr};
    use stdarch_test::simd_test;

    const NAN: f64 = f64::NAN;

    #[test]
    fn test_mm_pause() {
        _mm_pause()
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_clflush() {
        let x = 0_u8;
        unsafe {
            _mm_clflush(ptr::addr_of!(x));
        }
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    #[cfg_attr(miri, ignore)]
    fn test_mm_lfence() {
        _mm_lfence();
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    #[cfg_attr(miri, ignore)]
    fn test_mm_mfence() {
        _mm_mfence();
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_epi8() {
        let a = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
        #[rustfmt::skip]
        let b = _mm_setr_epi8(
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
        );
        let r = _mm_add_epi8(a, b);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_add_epi8_overflow() {
        let a = _mm_set1_epi8(0x7F);
        let b = _mm_set1_epi8(1);
        let r = _mm_add_epi8(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(-128));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(8, 9, 10, 11, 12, 13, 14, 15);
        let r = _mm_add_epi16(a, b);
        let e = _mm_setr_epi16(8, 10, 12, 14, 16, 18, 20, 22);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_epi32() {
        let a = _mm_setr_epi32(0, 1, 2, 3);
        let b = _mm_setr_epi32(4, 5, 6, 7);
        let r = _mm_add_epi32(a, b);
        let e = _mm_setr_epi32(4, 6, 8, 10);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_epi64() {
        let a = _mm_setr_epi64x(0, 1);
        let b = _mm_setr_epi64x(2, 3);
        let r = _mm_add_epi64(a, b);
        let e = _mm_setr_epi64x(2, 4);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_adds_epi8() {
        let a = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
        #[rustfmt::skip]
        let b = _mm_setr_epi8(
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
        );
        let r = _mm_adds_epi8(a, b);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epi8_saturate_positive() {
        let a = _mm_set1_epi8(0x7F);
        let b = _mm_set1_epi8(1);
        let r = _mm_adds_epi8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epi8_saturate_negative() {
        let a = _mm_set1_epi8(-0x80);
        let b = _mm_set1_epi8(-1);
        let r = _mm_adds_epi8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_adds_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(8, 9, 10, 11, 12, 13, 14, 15);
        let r = _mm_adds_epi16(a, b);
        let e = _mm_setr_epi16(8, 10, 12, 14, 16, 18, 20, 22);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epi16_saturate_positive() {
        let a = _mm_set1_epi16(0x7FFF);
        let b = _mm_set1_epi16(1);
        let r = _mm_adds_epi16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epi16_saturate_negative() {
        let a = _mm_set1_epi16(-0x8000);
        let b = _mm_set1_epi16(-1);
        let r = _mm_adds_epi16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_adds_epu8() {
        let a = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
        #[rustfmt::skip]
        let b = _mm_setr_epi8(
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
        );
        let r = _mm_adds_epu8(a, b);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epu8_saturate() {
        let a = _mm_set1_epi8(!0);
        let b = _mm_set1_epi8(1);
        let r = _mm_adds_epu8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_adds_epu16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(8, 9, 10, 11, 12, 13, 14, 15);
        let r = _mm_adds_epu16(a, b);
        let e = _mm_setr_epi16(8, 10, 12, 14, 16, 18, 20, 22);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_adds_epu16_saturate() {
        let a = _mm_set1_epi16(!0);
        let b = _mm_set1_epi16(1);
        let r = _mm_adds_epu16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_avg_epu8() {
        let (a, b) = (_mm_set1_epi8(3), _mm_set1_epi8(9));
        let r = _mm_avg_epu8(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(6));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_avg_epu16() {
        let (a, b) = (_mm_set1_epi16(3), _mm_set1_epi16(9));
        let r = _mm_avg_epu16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(6));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_madd_epi16() {
        let a = _mm_setr_epi16(1, 2, 3, 4, 5, 6, 7, 8);
        let b = _mm_setr_epi16(9, 10, 11, 12, 13, 14, 15, 16);
        let r = _mm_madd_epi16(a, b);
        let e = _mm_setr_epi32(29, 81, 149, 233);
        assert_eq_m128i(r, e);

        // Test large values.
        // MIN*MIN+MIN*MIN will overflow into i32::MIN.
        let a = _mm_setr_epi16(
            i16::MAX,
            i16::MAX,
            i16::MIN,
            i16::MIN,
            i16::MIN,
            i16::MAX,
            0,
            0,
        );
        let b = _mm_setr_epi16(
            i16::MAX,
            i16::MAX,
            i16::MIN,
            i16::MIN,
            i16::MAX,
            i16::MIN,
            0,
            0,
        );
        let r = _mm_madd_epi16(a, b);
        let e = _mm_setr_epi32(0x7FFE0002, i32::MIN, -0x7FFF0000, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_max_epi16() {
        let a = _mm_set1_epi16(1);
        let b = _mm_set1_epi16(-1);
        let r = _mm_max_epi16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_max_epu8() {
        let a = _mm_set1_epi8(1);
        let b = _mm_set1_epi8(!0);
        let r = _mm_max_epu8(a, b);
        assert_eq_m128i(r, b);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_min_epi16() {
        let a = _mm_set1_epi16(1);
        let b = _mm_set1_epi16(-1);
        let r = _mm_min_epi16(a, b);
        assert_eq_m128i(r, b);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_min_epu8() {
        let a = _mm_set1_epi8(1);
        let b = _mm_set1_epi8(!0);
        let r = _mm_min_epu8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mulhi_epi16() {
        let (a, b) = (_mm_set1_epi16(1000), _mm_set1_epi16(-1001));
        let r = _mm_mulhi_epi16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(-16));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mulhi_epu16() {
        let (a, b) = (_mm_set1_epi16(1000), _mm_set1_epi16(1001));
        let r = _mm_mulhi_epu16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(15));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mullo_epi16() {
        let (a, b) = (_mm_set1_epi16(1000), _mm_set1_epi16(-1001));
        let r = _mm_mullo_epi16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(-17960));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mul_epu32() {
        let a = _mm_setr_epi64x(1_000_000_000, 1 << 34);
        let b = _mm_setr_epi64x(1_000_000_000, 1 << 35);
        let r = _mm_mul_epu32(a, b);
        let e = _mm_setr_epi64x(1_000_000_000 * 1_000_000_000, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sad_epu8() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            255u8 as i8, 254u8 as i8, 253u8 as i8, 252u8 as i8,
            1, 2, 3, 4,
            155u8 as i8, 154u8 as i8, 153u8 as i8, 152u8 as i8,
            1, 2, 3, 4,
        );
        let b = _mm_setr_epi8(0, 0, 0, 0, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 2);
        let r = _mm_sad_epu8(a, b);
        let e = _mm_setr_epi64x(1020, 614);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_epi8() {
        let (a, b) = (_mm_set1_epi8(5), _mm_set1_epi8(6));
        let r = _mm_sub_epi8(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(-1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_epi16() {
        let (a, b) = (_mm_set1_epi16(5), _mm_set1_epi16(6));
        let r = _mm_sub_epi16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(-1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_epi32() {
        let (a, b) = (_mm_set1_epi32(5), _mm_set1_epi32(6));
        let r = _mm_sub_epi32(a, b);
        assert_eq_m128i(r, _mm_set1_epi32(-1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_epi64() {
        let (a, b) = (_mm_set1_epi64x(5), _mm_set1_epi64x(6));
        let r = _mm_sub_epi64(a, b);
        assert_eq_m128i(r, _mm_set1_epi64x(-1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_subs_epi8() {
        let (a, b) = (_mm_set1_epi8(5), _mm_set1_epi8(2));
        let r = _mm_subs_epi8(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(3));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epi8_saturate_positive() {
        let a = _mm_set1_epi8(0x7F);
        let b = _mm_set1_epi8(-1);
        let r = _mm_subs_epi8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epi8_saturate_negative() {
        let a = _mm_set1_epi8(-0x80);
        let b = _mm_set1_epi8(1);
        let r = _mm_subs_epi8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_subs_epi16() {
        let (a, b) = (_mm_set1_epi16(5), _mm_set1_epi16(2));
        let r = _mm_subs_epi16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(3));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epi16_saturate_positive() {
        let a = _mm_set1_epi16(0x7FFF);
        let b = _mm_set1_epi16(-1);
        let r = _mm_subs_epi16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epi16_saturate_negative() {
        let a = _mm_set1_epi16(-0x8000);
        let b = _mm_set1_epi16(1);
        let r = _mm_subs_epi16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_subs_epu8() {
        let (a, b) = (_mm_set1_epi8(5), _mm_set1_epi8(2));
        let r = _mm_subs_epu8(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(3));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epu8_saturate() {
        let a = _mm_set1_epi8(0);
        let b = _mm_set1_epi8(1);
        let r = _mm_subs_epu8(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_subs_epu16() {
        let (a, b) = (_mm_set1_epi16(5), _mm_set1_epi16(2));
        let r = _mm_subs_epu16(a, b);
        assert_eq_m128i(r, _mm_set1_epi16(3));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_subs_epu16_saturate() {
        let a = _mm_set1_epi16(0);
        let b = _mm_set1_epi16(1);
        let r = _mm_subs_epu16(a, b);
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_slli_si128() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_slli_si128::<1>(a);
        let e = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
        assert_eq_m128i(r, e);

        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_slli_si128::<15>(a);
        let e = _mm_setr_epi8(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1);
        assert_eq_m128i(r, e);

        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_slli_si128::<16>(a);
        assert_eq_m128i(r, _mm_set1_epi8(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_slli_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_slli_epi16::<4>(a);
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xCC0, -0xCC0, 0xDD0, -0xDD0, 0xEE0, -0xEE0, 0xFF0, -0xFF0),
        );
        let r = _mm_slli_epi16::<16>(a);
        assert_eq_m128i(r, _mm_set1_epi16(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sll_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_sll_epi16(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xCC0, -0xCC0, 0xDD0, -0xDD0, 0xEE0, -0xEE0, 0xFF0, -0xFF0),
        );
        let r = _mm_sll_epi16(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_sll_epi16(a, _mm_set_epi64x(0, 16));
        assert_eq_m128i(r, _mm_set1_epi16(0));
        let r = _mm_sll_epi16(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi16(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_slli_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_slli_epi32::<4>(a);
        assert_eq_m128i(r, _mm_setr_epi32(0xEEEE0, -0xEEEE0, 0xFFFF0, -0xFFFF0));
        let r = _mm_slli_epi32::<32>(a);
        assert_eq_m128i(r, _mm_set1_epi32(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sll_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_sll_epi32(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(r, _mm_setr_epi32(0xEEEE0, -0xEEEE0, 0xFFFF0, -0xFFFF0));
        let r = _mm_sll_epi32(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_sll_epi32(a, _mm_set_epi64x(0, 32));
        assert_eq_m128i(r, _mm_set1_epi32(0));
        let r = _mm_sll_epi32(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi32(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_slli_epi64() {
        let a = _mm_set_epi64x(0xFFFFFFFF, -0xFFFFFFFF);
        let r = _mm_slli_epi64::<4>(a);
        assert_eq_m128i(r, _mm_set_epi64x(0xFFFFFFFF0, -0xFFFFFFFF0));
        let r = _mm_slli_epi64::<64>(a);
        assert_eq_m128i(r, _mm_set1_epi64x(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sll_epi64() {
        let a = _mm_set_epi64x(0xFFFFFFFF, -0xFFFFFFFF);
        let r = _mm_sll_epi64(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(r, _mm_set_epi64x(0xFFFFFFFF0, -0xFFFFFFFF0));
        let r = _mm_sll_epi64(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_sll_epi64(a, _mm_set_epi64x(0, 64));
        assert_eq_m128i(r, _mm_set1_epi64x(0));
        let r = _mm_sll_epi64(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi64x(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srai_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_srai_epi16::<4>(a);
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xC, -0xD, 0xD, -0xE, 0xE, -0xF, 0xF, -0x10),
        );
        let r = _mm_srai_epi16::<16>(a);
        assert_eq_m128i(r, _mm_setr_epi16(0, -1, 0, -1, 0, -1, 0, -1));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sra_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_sra_epi16(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xC, -0xD, 0xD, -0xE, 0xE, -0xF, 0xF, -0x10),
        );
        let r = _mm_sra_epi16(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_sra_epi16(a, _mm_set_epi64x(0, 16));
        assert_eq_m128i(r, _mm_setr_epi16(0, -1, 0, -1, 0, -1, 0, -1));
        let r = _mm_sra_epi16(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_setr_epi16(0, -1, 0, -1, 0, -1, 0, -1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srai_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_srai_epi32::<4>(a);
        assert_eq_m128i(r, _mm_setr_epi32(0xEEE, -0xEEF, 0xFFF, -0x1000));
        let r = _mm_srai_epi32::<32>(a);
        assert_eq_m128i(r, _mm_setr_epi32(0, -1, 0, -1));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sra_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_sra_epi32(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(r, _mm_setr_epi32(0xEEE, -0xEEF, 0xFFF, -0x1000));
        let r = _mm_sra_epi32(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_sra_epi32(a, _mm_set_epi64x(0, 32));
        assert_eq_m128i(r, _mm_setr_epi32(0, -1, 0, -1));
        let r = _mm_sra_epi32(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_setr_epi32(0, -1, 0, -1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srli_si128() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_srli_si128::<1>(a);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 0,
        );
        assert_eq_m128i(r, e);

        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_srli_si128::<15>(a);
        let e = _mm_setr_epi8(16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);

        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
        );
        let r = _mm_srli_si128::<16>(a);
        assert_eq_m128i(r, _mm_set1_epi8(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srli_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_srli_epi16::<4>(a);
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xC, 0xFF3, 0xD, 0xFF2, 0xE, 0xFF1, 0xF, 0xFF0),
        );
        let r = _mm_srli_epi16::<16>(a);
        assert_eq_m128i(r, _mm_set1_epi16(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_srl_epi16() {
        let a = _mm_setr_epi16(0xCC, -0xCC, 0xDD, -0xDD, 0xEE, -0xEE, 0xFF, -0xFF);
        let r = _mm_srl_epi16(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0xC, 0xFF3, 0xD, 0xFF2, 0xE, 0xFF1, 0xF, 0xFF0),
        );
        let r = _mm_srl_epi16(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_srl_epi16(a, _mm_set_epi64x(0, 16));
        assert_eq_m128i(r, _mm_set1_epi16(0));
        let r = _mm_srl_epi16(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi16(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srli_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_srli_epi32::<4>(a);
        assert_eq_m128i(r, _mm_setr_epi32(0xEEE, 0xFFFF111, 0xFFF, 0xFFFF000));
        let r = _mm_srli_epi32::<32>(a);
        assert_eq_m128i(r, _mm_set1_epi32(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_srl_epi32() {
        let a = _mm_setr_epi32(0xEEEE, -0xEEEE, 0xFFFF, -0xFFFF);
        let r = _mm_srl_epi32(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(r, _mm_setr_epi32(0xEEE, 0xFFFF111, 0xFFF, 0xFFFF000));
        let r = _mm_srl_epi32(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_srl_epi32(a, _mm_set_epi64x(0, 32));
        assert_eq_m128i(r, _mm_set1_epi32(0));
        let r = _mm_srl_epi32(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi32(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_srli_epi64() {
        let a = _mm_set_epi64x(0xFFFFFFFF, -0xFFFFFFFF);
        let r = _mm_srli_epi64::<4>(a);
        assert_eq_m128i(r, _mm_set_epi64x(0xFFFFFFF, 0xFFFFFFFF0000000));
        let r = _mm_srli_epi64::<64>(a);
        assert_eq_m128i(r, _mm_set1_epi64x(0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_srl_epi64() {
        let a = _mm_set_epi64x(0xFFFFFFFF, -0xFFFFFFFF);
        let r = _mm_srl_epi64(a, _mm_set_epi64x(0, 4));
        assert_eq_m128i(r, _mm_set_epi64x(0xFFFFFFF, 0xFFFFFFFF0000000));
        let r = _mm_srl_epi64(a, _mm_set_epi64x(4, 0));
        assert_eq_m128i(r, a);
        let r = _mm_srl_epi64(a, _mm_set_epi64x(0, 64));
        assert_eq_m128i(r, _mm_set1_epi64x(0));
        let r = _mm_srl_epi64(a, _mm_set_epi64x(0, i64::MAX));
        assert_eq_m128i(r, _mm_set1_epi64x(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_and_si128() {
        let a = _mm_set1_epi8(5);
        let b = _mm_set1_epi8(3);
        let r = _mm_and_si128(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_andnot_si128() {
        let a = _mm_set1_epi8(5);
        let b = _mm_set1_epi8(3);
        let r = _mm_andnot_si128(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(2));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_or_si128() {
        let a = _mm_set1_epi8(5);
        let b = _mm_set1_epi8(3);
        let r = _mm_or_si128(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(7));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_xor_si128() {
        let a = _mm_set1_epi8(5);
        let b = _mm_set1_epi8(3);
        let r = _mm_xor_si128(a, b);
        assert_eq_m128i(r, _mm_set1_epi8(6));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpeq_epi8() {
        let a = _mm_setr_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
        let b = _mm_setr_epi8(15, 14, 2, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
        let r = _mm_cmpeq_epi8(a, b);
        #[rustfmt::skip]
        assert_eq_m128i(
            r,
            _mm_setr_epi8(
                0, 0, 0xFFu8 as i8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
            )
        );
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpeq_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(7, 6, 2, 4, 3, 2, 1, 0);
        let r = _mm_cmpeq_epi16(a, b);
        assert_eq_m128i(r, _mm_setr_epi16(0, 0, !0, 0, 0, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpeq_epi32() {
        let a = _mm_setr_epi32(0, 1, 2, 3);
        let b = _mm_setr_epi32(3, 2, 2, 0);
        let r = _mm_cmpeq_epi32(a, b);
        assert_eq_m128i(r, _mm_setr_epi32(0, 0, !0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpgt_epi8() {
        let a = _mm_set_epi8(5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        let b = _mm_set1_epi8(0);
        let r = _mm_cmpgt_epi8(a, b);
        let e = _mm_set_epi8(!0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpgt_epi16() {
        let a = _mm_set_epi16(5, 0, 0, 0, 0, 0, 0, 0);
        let b = _mm_set1_epi16(0);
        let r = _mm_cmpgt_epi16(a, b);
        let e = _mm_set_epi16(!0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmpgt_epi32() {
        let a = _mm_set_epi32(5, 0, 0, 0);
        let b = _mm_set1_epi32(0);
        let r = _mm_cmpgt_epi32(a, b);
        assert_eq_m128i(r, _mm_set_epi32(!0, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmplt_epi8() {
        let a = _mm_set1_epi8(0);
        let b = _mm_set_epi8(5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        let r = _mm_cmplt_epi8(a, b);
        let e = _mm_set_epi8(!0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmplt_epi16() {
        let a = _mm_set1_epi16(0);
        let b = _mm_set_epi16(5, 0, 0, 0, 0, 0, 0, 0);
        let r = _mm_cmplt_epi16(a, b);
        let e = _mm_set_epi16(!0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cmplt_epi32() {
        let a = _mm_set1_epi32(0);
        let b = _mm_set_epi32(5, 0, 0, 0);
        let r = _mm_cmplt_epi32(a, b);
        assert_eq_m128i(r, _mm_set_epi32(!0, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtepi32_pd() {
        let a = _mm_set_epi32(35, 25, 15, 5);
        let r = _mm_cvtepi32_pd(a);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 15.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtsi32_sd() {
        let a = _mm_set1_pd(3.5);
        let r = _mm_cvtsi32_sd(a, 5);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 3.5));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtepi32_ps() {
        let a = _mm_setr_epi32(1, 2, 3, 4);
        let r = _mm_cvtepi32_ps(a);
        assert_eq_m128(r, _mm_setr_ps(1.0, 2.0, 3.0, 4.0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvtps_epi32() {
        let a = _mm_setr_ps(1.0, 2.0, 3.0, 4.0);
        let r = _mm_cvtps_epi32(a);
        assert_eq_m128i(r, _mm_setr_epi32(1, 2, 3, 4));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtsi32_si128() {
        let r = _mm_cvtsi32_si128(5);
        assert_eq_m128i(r, _mm_setr_epi32(5, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtsi128_si32() {
        let r = _mm_cvtsi128_si32(_mm_setr_epi32(5, 0, 0, 0));
        assert_eq!(r, 5);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_epi64x() {
        let r = _mm_set_epi64x(0, 1);
        assert_eq_m128i(r, _mm_setr_epi64x(1, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_epi32() {
        let r = _mm_set_epi32(0, 1, 2, 3);
        assert_eq_m128i(r, _mm_setr_epi32(3, 2, 1, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_epi16() {
        let r = _mm_set_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        assert_eq_m128i(r, _mm_setr_epi16(7, 6, 5, 4, 3, 2, 1, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_epi8() {
        #[rustfmt::skip]
        let r = _mm_set_epi8(
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
        );
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            15, 14, 13, 12, 11, 10, 9, 8,
            7, 6, 5, 4, 3, 2, 1, 0,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set1_epi64x() {
        let r = _mm_set1_epi64x(1);
        assert_eq_m128i(r, _mm_set1_epi64x(1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set1_epi32() {
        let r = _mm_set1_epi32(1);
        assert_eq_m128i(r, _mm_set1_epi32(1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set1_epi16() {
        let r = _mm_set1_epi16(1);
        assert_eq_m128i(r, _mm_set1_epi16(1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set1_epi8() {
        let r = _mm_set1_epi8(1);
        assert_eq_m128i(r, _mm_set1_epi8(1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setr_epi32() {
        let r = _mm_setr_epi32(0, 1, 2, 3);
        assert_eq_m128i(r, _mm_setr_epi32(0, 1, 2, 3));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setr_epi16() {
        let r = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        assert_eq_m128i(r, _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setr_epi8() {
        #[rustfmt::skip]
        let r = _mm_setr_epi8(
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
        );
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            0, 1, 2, 3, 4, 5, 6, 7,
            8, 9, 10, 11, 12, 13, 14, 15,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setzero_si128() {
        let r = _mm_setzero_si128();
        assert_eq_m128i(r, _mm_set1_epi64x(0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadl_epi64() {
        let a = _mm_setr_epi64x(6, 5);
        let r = unsafe { _mm_loadl_epi64(ptr::addr_of!(a)) };
        assert_eq_m128i(r, _mm_setr_epi64x(6, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_load_si128() {
        let a = _mm_set_epi64x(5, 6);
        let r = unsafe { _mm_load_si128(ptr::addr_of!(a) as *const _) };
        assert_eq_m128i(a, r);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadu_si128() {
        let a = _mm_set_epi64x(5, 6);
        let r = unsafe { _mm_loadu_si128(ptr::addr_of!(a) as *const _) };
        assert_eq_m128i(a, r);
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    // (non-temporal store)
    #[cfg_attr(miri, ignore)]
    fn test_mm_maskmoveu_si128() {
        let a = _mm_set1_epi8(9);
        #[rustfmt::skip]
        let mask = _mm_set_epi8(
            0, 0, 0x80u8 as i8, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0,
        );
        let mut r = _mm_set1_epi8(0);
        unsafe {
            _mm_maskmoveu_si128(a, mask, ptr::addr_of_mut!(r) as *mut i8);
        }
        _mm_sfence();
        let e = _mm_set_epi8(0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_store_si128() {
        let a = _mm_set1_epi8(9);
        let mut r = _mm_set1_epi8(0);
        unsafe {
            _mm_store_si128(&mut r, a);
        }
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeu_si128() {
        let a = _mm_set1_epi8(9);
        let mut r = _mm_set1_epi8(0);
        unsafe {
            _mm_storeu_si128(&mut r, a);
        }
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storel_epi64() {
        let a = _mm_setr_epi64x(2, 9);
        let mut r = _mm_set1_epi8(0);
        unsafe {
            _mm_storel_epi64(&mut r, a);
        }
        assert_eq_m128i(r, _mm_setr_epi64x(2, 0));
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    // (non-temporal store)
    #[cfg_attr(miri, ignore)]
    fn test_mm_stream_si128() {
        let a = _mm_setr_epi32(1, 2, 3, 4);
        let mut r = _mm_undefined_si128();
        unsafe {
            _mm_stream_si128(ptr::addr_of_mut!(r), a);
        }
        _mm_sfence();
        assert_eq_m128i(r, a);
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    // (non-temporal store)
    #[cfg_attr(miri, ignore)]
    fn test_mm_stream_si32() {
        let a: i32 = 7;
        let mut mem = boxed::Box::<i32>::new(-1);
        unsafe {
            _mm_stream_si32(ptr::addr_of_mut!(*mem), a);
        }
        _mm_sfence();
        assert_eq!(a, *mem);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_move_epi64() {
        let a = _mm_setr_epi64x(5, 6);
        let r = _mm_move_epi64(a);
        assert_eq_m128i(r, _mm_setr_epi64x(5, 0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_packs_epi16() {
        let a = _mm_setr_epi16(0x80, -0x81, 0, 0, 0, 0, 0, 0);
        let b = _mm_setr_epi16(0, 0, 0, 0, 0, 0, -0x81, 0x80);
        let r = _mm_packs_epi16(a, b);
        #[rustfmt::skip]
        assert_eq_m128i(
            r,
            _mm_setr_epi8(
                0x7F, -0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -0x80, 0x7F
            )
        );
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_packs_epi32() {
        let a = _mm_setr_epi32(0x8000, -0x8001, 0, 0);
        let b = _mm_setr_epi32(0, 0, -0x8001, 0x8000);
        let r = _mm_packs_epi32(a, b);
        assert_eq_m128i(
            r,
            _mm_setr_epi16(0x7FFF, -0x8000, 0, 0, 0, 0, -0x8000, 0x7FFF),
        );
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_packus_epi16() {
        let a = _mm_setr_epi16(0x100, -1, 0, 0, 0, 0, 0, 0);
        let b = _mm_setr_epi16(0, 0, 0, 0, 0, 0, -1, 0x100);
        let r = _mm_packus_epi16(a, b);
        assert_eq_m128i(
            r,
            _mm_setr_epi8(!0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, !0),
        );
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_extract_epi16() {
        let a = _mm_setr_epi16(-1, 1, 2, 3, 4, 5, 6, 7);
        let r1 = _mm_extract_epi16::<0>(a);
        let r2 = _mm_extract_epi16::<3>(a);
        assert_eq!(r1, 0xFFFF);
        assert_eq!(r2, 3);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_insert_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let r = _mm_insert_epi16::<0>(a, 9);
        let e = _mm_setr_epi16(9, 1, 2, 3, 4, 5, 6, 7);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_movemask_epi8() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            0b1000_0000u8 as i8, 0b0, 0b1000_0000u8 as i8, 0b01,
            0b0101, 0b1111_0000u8 as i8, 0, 0,
            0, 0b1011_0101u8 as i8, 0b1111_0000u8 as i8, 0b0101,
            0b01, 0b1000_0000u8 as i8, 0b0, 0b1000_0000u8 as i8,
        );
        let r = _mm_movemask_epi8(a);
        assert_eq!(r, 0b10100110_00100101);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_shuffle_epi32() {
        let a = _mm_setr_epi32(5, 10, 15, 20);
        let r = _mm_shuffle_epi32::<0b00_01_01_11>(a);
        let e = _mm_setr_epi32(20, 10, 10, 5);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_shufflehi_epi16() {
        let a = _mm_setr_epi16(1, 2, 3, 4, 5, 10, 15, 20);
        let r = _mm_shufflehi_epi16::<0b00_01_01_11>(a);
        let e = _mm_setr_epi16(1, 2, 3, 4, 20, 10, 10, 5);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_shufflelo_epi16() {
        let a = _mm_setr_epi16(5, 10, 15, 20, 1, 2, 3, 4);
        let r = _mm_shufflelo_epi16::<0b00_01_01_11>(a);
        let e = _mm_setr_epi16(20, 10, 10, 5, 1, 2, 3, 4);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpackhi_epi8() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            0, 1, 2, 3, 4, 5, 6, 7,
            8, 9, 10, 11, 12, 13, 14, 15,
        );
        #[rustfmt::skip]
        let b = _mm_setr_epi8(
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
        );
        let r = _mm_unpackhi_epi8(a, b);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            8, 24, 9, 25, 10, 26, 11, 27, 12, 28, 13, 29, 14, 30, 15, 31,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpackhi_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(8, 9, 10, 11, 12, 13, 14, 15);
        let r = _mm_unpackhi_epi16(a, b);
        let e = _mm_setr_epi16(4, 12, 5, 13, 6, 14, 7, 15);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpackhi_epi32() {
        let a = _mm_setr_epi32(0, 1, 2, 3);
        let b = _mm_setr_epi32(4, 5, 6, 7);
        let r = _mm_unpackhi_epi32(a, b);
        let e = _mm_setr_epi32(2, 6, 3, 7);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpackhi_epi64() {
        let a = _mm_setr_epi64x(0, 1);
        let b = _mm_setr_epi64x(2, 3);
        let r = _mm_unpackhi_epi64(a, b);
        let e = _mm_setr_epi64x(1, 3);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpacklo_epi8() {
        #[rustfmt::skip]
        let a = _mm_setr_epi8(
            0, 1, 2, 3, 4, 5, 6, 7,
            8, 9, 10, 11, 12, 13, 14, 15,
        );
        #[rustfmt::skip]
        let b = _mm_setr_epi8(
            16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
        );
        let r = _mm_unpacklo_epi8(a, b);
        #[rustfmt::skip]
        let e = _mm_setr_epi8(
            0, 16, 1, 17, 2, 18, 3, 19,
            4, 20, 5, 21, 6, 22, 7, 23,
        );
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpacklo_epi16() {
        let a = _mm_setr_epi16(0, 1, 2, 3, 4, 5, 6, 7);
        let b = _mm_setr_epi16(8, 9, 10, 11, 12, 13, 14, 15);
        let r = _mm_unpacklo_epi16(a, b);
        let e = _mm_setr_epi16(0, 8, 1, 9, 2, 10, 3, 11);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpacklo_epi32() {
        let a = _mm_setr_epi32(0, 1, 2, 3);
        let b = _mm_setr_epi32(4, 5, 6, 7);
        let r = _mm_unpacklo_epi32(a, b);
        let e = _mm_setr_epi32(0, 4, 1, 5);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpacklo_epi64() {
        let a = _mm_setr_epi64x(0, 1);
        let b = _mm_setr_epi64x(2, 3);
        let r = _mm_unpacklo_epi64(a, b);
        let e = _mm_setr_epi64x(0, 2);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_add_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(6.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_add_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_add_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(6.0, 12.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_div_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_div_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(0.2, 2.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_div_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_div_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(0.2, 0.2));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_max_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_max_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_max_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_max_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 10.0));

        // Check SSE(2)-specific semantics for -0.0 handling.
        let a = _mm_setr_pd(-0.0, 0.0);
        let b = _mm_setr_pd(0.0, 0.0);
        // Cast to __m128i to compare exact bit patterns
        let r1 = _mm_castpd_si128(_mm_max_pd(a, b));
        let r2 = _mm_castpd_si128(_mm_max_pd(b, a));
        let a = _mm_castpd_si128(a);
        let b = _mm_castpd_si128(b);
        assert_eq_m128i(r1, b);
        assert_eq_m128i(r2, a);
        assert_ne!(a.as_u8x16(), b.as_u8x16()); // sanity check that -0.0 is actually present
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_min_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_min_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(1.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_min_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_min_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(1.0, 2.0));

        // Check SSE(2)-specific semantics for -0.0 handling.
        let a = _mm_setr_pd(-0.0, 0.0);
        let b = _mm_setr_pd(0.0, 0.0);
        // Cast to __m128i to compare exact bit patterns
        let r1 = _mm_castpd_si128(_mm_min_pd(a, b));
        let r2 = _mm_castpd_si128(_mm_min_pd(b, a));
        let a = _mm_castpd_si128(a);
        let b = _mm_castpd_si128(b);
        assert_eq_m128i(r1, b);
        assert_eq_m128i(r2, a);
        assert_ne!(a.as_u8x16(), b.as_u8x16()); // sanity check that -0.0 is actually present
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mul_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_mul_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_mul_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_mul_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(5.0, 20.0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sqrt_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_sqrt_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(5.0f64.sqrt(), 2.0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_sqrt_pd() {
        let r = _mm_sqrt_pd(_mm_setr_pd(1.0, 2.0));
        assert_eq_m128d(r, _mm_setr_pd(1.0f64.sqrt(), 2.0f64.sqrt()));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_sd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_sub_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(-4.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_sub_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(5.0, 10.0);
        let r = _mm_sub_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(-4.0, -8.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_and_pd() {
        let a = f64x2::from_bits(u64x2::splat(5)).as_m128d();
        let b = f64x2::from_bits(u64x2::splat(3)).as_m128d();
        let r = _mm_and_pd(a, b);
        let e = f64x2::from_bits(u64x2::splat(1)).as_m128d();
        assert_eq_m128d(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_andnot_pd() {
        let a = f64x2::from_bits(u64x2::splat(5)).as_m128d();
        let b = f64x2::from_bits(u64x2::splat(3)).as_m128d();
        let r = _mm_andnot_pd(a, b);
        let e = f64x2::from_bits(u64x2::splat(2)).as_m128d();
        assert_eq_m128d(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_or_pd() {
        let a = f64x2::from_bits(u64x2::splat(5)).as_m128d();
        let b = f64x2::from_bits(u64x2::splat(3)).as_m128d();
        let r = _mm_or_pd(a, b);
        let e = f64x2::from_bits(u64x2::splat(7)).as_m128d();
        assert_eq_m128d(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_xor_pd() {
        let a = f64x2::from_bits(u64x2::splat(5)).as_m128d();
        let b = f64x2::from_bits(u64x2::splat(3)).as_m128d();
        let r = _mm_xor_pd(a, b);
        let e = f64x2::from_bits(u64x2::splat(6)).as_m128d();
        assert_eq_m128d(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpeq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpeq_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmplt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmplt_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmple_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmple_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpgt_sd() {
        let (a, b) = (_mm_setr_pd(5.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpgt_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpge_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpge_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpord_sd() {
        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpord_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpunord_sd() {
        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpunord_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpneq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(!0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpneq_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnlt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpnlt_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnle_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpnle_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpngt_sd() {
        let (a, b) = (_mm_setr_pd(5.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpngt_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnge_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, 2.0f64.to_bits() as i64);
        let r = _mm_castpd_si128(_mm_cmpnge_sd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpeq_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 0);
        let r = _mm_castpd_si128(_mm_cmpeq_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmplt_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, !0);
        let r = _mm_castpd_si128(_mm_cmplt_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmple_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, !0);
        let r = _mm_castpd_si128(_mm_cmple_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpgt_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, 0);
        let r = _mm_castpd_si128(_mm_cmpgt_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpge_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(!0, 0);
        let r = _mm_castpd_si128(_mm_cmpge_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpord_pd() {
        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(0, !0);
        let r = _mm_castpd_si128(_mm_cmpord_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpunord_pd() {
        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(!0, 0);
        let r = _mm_castpd_si128(_mm_cmpunord_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpneq_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(!0, !0);
        let r = _mm_castpd_si128(_mm_cmpneq_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnlt_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(5.0, 3.0));
        let e = _mm_setr_epi64x(0, 0);
        let r = _mm_castpd_si128(_mm_cmpnlt_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnle_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, 0);
        let r = _mm_castpd_si128(_mm_cmpnle_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpngt_pd() {
        let (a, b) = (_mm_setr_pd(5.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, !0);
        let r = _mm_castpd_si128(_mm_cmpngt_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cmpnge_pd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        let e = _mm_setr_epi64x(0, !0);
        let r = _mm_castpd_si128(_mm_cmpnge_pd(a, b));
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comieq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comieq_sd(a, b) != 0);

        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comieq_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comilt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comilt_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comile_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comile_sd(a, b) != 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comigt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comigt_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comige_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comige_sd(a, b) != 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_comineq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_comineq_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomieq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomieq_sd(a, b) != 0);

        let (a, b) = (_mm_setr_pd(NAN, 2.0), _mm_setr_pd(NAN, 3.0));
        assert!(_mm_ucomieq_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomilt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomilt_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomile_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomile_sd(a, b) != 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomigt_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomigt_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomige_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomige_sd(a, b) != 0);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_ucomineq_sd() {
        let (a, b) = (_mm_setr_pd(1.0, 2.0), _mm_setr_pd(1.0, 3.0));
        assert!(_mm_ucomineq_sd(a, b) == 0);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_movemask_pd() {
        let r = _mm_movemask_pd(_mm_setr_pd(-1.0, 5.0));
        assert_eq!(r, 0b01);

        let r = _mm_movemask_pd(_mm_setr_pd(-1.0, -5.0));
        assert_eq!(r, 0b11);
    }

    #[repr(align(16))]
    struct Memory {
        data: [f64; 4],
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_load_pd() {
        let mem = Memory {
            data: [1.0f64, 2.0, 3.0, 4.0],
        };
        let vals = &mem.data;
        let d = vals.as_ptr();

        let r = unsafe { _mm_load_pd(d) };
        assert_eq_m128d(r, _mm_setr_pd(1.0, 2.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_load_sd() {
        let a = 1.;
        let expected = _mm_setr_pd(a, 0.);
        let r = unsafe { _mm_load_sd(&a) };
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadh_pd() {
        let a = _mm_setr_pd(1., 2.);
        let b = 3.;
        let expected = _mm_setr_pd(_mm_cvtsd_f64(a), 3.);
        let r = unsafe { _mm_loadh_pd(a, &b) };
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadl_pd() {
        let a = _mm_setr_pd(1., 2.);
        let b = 3.;
        let expected = _mm_setr_pd(3., get_m128d(a, 1));
        let r = unsafe { _mm_loadl_pd(a, &b) };
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    // Miri cannot support this until it is clear how it fits in the Rust memory model
    // (non-temporal store)
    #[cfg_attr(miri, ignore)]
    fn test_mm_stream_pd() {
        #[repr(align(128))]
        struct Memory {
            pub data: [f64; 2],
        }
        let a = _mm_set1_pd(7.0);
        let mut mem = Memory { data: [-1.0; 2] };

        unsafe {
            _mm_stream_pd(ptr::addr_of_mut!(mem.data[0]), a);
        }
        _mm_sfence();
        for i in 0..2 {
            assert_eq!(mem.data[i], get_m128d(a, i));
        }
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_store_sd() {
        let mut dest = 0.;
        let a = _mm_setr_pd(1., 2.);
        unsafe {
            _mm_store_sd(&mut dest, a);
        }
        assert_eq!(dest, _mm_cvtsd_f64(a));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_store_pd() {
        let mut mem = Memory { data: [0.0f64; 4] };
        let vals = &mut mem.data;
        let a = _mm_setr_pd(1.0, 2.0);
        let d = vals.as_mut_ptr();

        unsafe {
            _mm_store_pd(d, *black_box(&a));
        }
        assert_eq!(vals[0], 1.0);
        assert_eq!(vals[1], 2.0);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeu_pd() {
        // guaranteed to be aligned to 16 bytes
        let mut mem = Memory { data: [0.0f64; 4] };
        let vals = &mut mem.data;
        let a = _mm_setr_pd(1.0, 2.0);

        // so p is *not* aligned to 16 bytes
        unsafe {
            let p = vals.as_mut_ptr().offset(1);
            _mm_storeu_pd(p, *black_box(&a));
        }

        assert_eq!(*vals, [0.0, 1.0, 2.0, 0.0]);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeu_si16() {
        let a = _mm_setr_epi16(1, 2, 3, 4, 5, 6, 7, 8);
        let mut r = _mm_setr_epi16(9, 10, 11, 12, 13, 14, 15, 16);
        unsafe {
            _mm_storeu_si16(ptr::addr_of_mut!(r).cast(), a);
        }
        let e = _mm_setr_epi16(1, 10, 11, 12, 13, 14, 15, 16);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeu_si32() {
        let a = _mm_setr_epi32(1, 2, 3, 4);
        let mut r = _mm_setr_epi32(5, 6, 7, 8);
        unsafe {
            _mm_storeu_si32(ptr::addr_of_mut!(r).cast(), a);
        }
        let e = _mm_setr_epi32(1, 6, 7, 8);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeu_si64() {
        let a = _mm_setr_epi64x(1, 2);
        let mut r = _mm_setr_epi64x(3, 4);
        unsafe {
            _mm_storeu_si64(ptr::addr_of_mut!(r).cast(), a);
        }
        let e = _mm_setr_epi64x(1, 4);
        assert_eq_m128i(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_store1_pd() {
        let mut mem = Memory { data: [0.0f64; 4] };
        let vals = &mut mem.data;
        let a = _mm_setr_pd(1.0, 2.0);
        let d = vals.as_mut_ptr();

        unsafe {
            _mm_store1_pd(d, *black_box(&a));
        }
        assert_eq!(vals[0], 1.0);
        assert_eq!(vals[1], 1.0);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_store_pd1() {
        let mut mem = Memory { data: [0.0f64; 4] };
        let vals = &mut mem.data;
        let a = _mm_setr_pd(1.0, 2.0);
        let d = vals.as_mut_ptr();

        unsafe {
            _mm_store_pd1(d, *black_box(&a));
        }
        assert_eq!(vals[0], 1.0);
        assert_eq!(vals[1], 1.0);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storer_pd() {
        let mut mem = Memory { data: [0.0f64; 4] };
        let vals = &mut mem.data;
        let a = _mm_setr_pd(1.0, 2.0);
        let d = vals.as_mut_ptr();

        unsafe {
            _mm_storer_pd(d, *black_box(&a));
        }
        assert_eq!(vals[0], 2.0);
        assert_eq!(vals[1], 1.0);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storeh_pd() {
        let mut dest = 0.;
        let a = _mm_setr_pd(1., 2.);
        unsafe {
            _mm_storeh_pd(&mut dest, a);
        }
        assert_eq!(dest, get_m128d(a, 1));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_storel_pd() {
        let mut dest = 0.;
        let a = _mm_setr_pd(1., 2.);
        unsafe {
            _mm_storel_pd(&mut dest, a);
        }
        assert_eq!(dest, _mm_cvtsd_f64(a));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadr_pd() {
        let mut mem = Memory {
            data: [1.0f64, 2.0, 3.0, 4.0],
        };
        let vals = &mut mem.data;
        let d = vals.as_ptr();

        let r = unsafe { _mm_loadr_pd(d) };
        assert_eq_m128d(r, _mm_setr_pd(2.0, 1.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadu_pd() {
        // guaranteed to be aligned to 16 bytes
        let mut mem = Memory {
            data: [1.0f64, 2.0, 3.0, 4.0],
        };
        let vals = &mut mem.data;

        // so this will *not* be aligned to 16 bytes
        let d = unsafe { vals.as_ptr().offset(1) };

        let r = unsafe { _mm_loadu_pd(d) };
        let e = _mm_setr_pd(2.0, 3.0);
        assert_eq_m128d(r, e);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadu_si16() {
        let a = _mm_setr_epi16(1, 2, 3, 4, 5, 6, 7, 8);
        let r = unsafe { _mm_loadu_si16(ptr::addr_of!(a) as *const _) };
        assert_eq_m128i(r, _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadu_si32() {
        let a = _mm_setr_epi32(1, 2, 3, 4);
        let r = unsafe { _mm_loadu_si32(ptr::addr_of!(a) as *const _) };
        assert_eq_m128i(r, _mm_setr_epi32(1, 0, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_loadu_si64() {
        let a = _mm_setr_epi64x(5, 6);
        let r = unsafe { _mm_loadu_si64(ptr::addr_of!(a) as *const _) };
        assert_eq_m128i(r, _mm_setr_epi64x(5, 0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtpd_ps() {
        let r = _mm_cvtpd_ps(_mm_setr_pd(-1.0, 5.0));
        assert_eq_m128(r, _mm_setr_ps(-1.0, 5.0, 0.0, 0.0));

        let r = _mm_cvtpd_ps(_mm_setr_pd(-1.0, -5.0));
        assert_eq_m128(r, _mm_setr_ps(-1.0, -5.0, 0.0, 0.0));

        let r = _mm_cvtpd_ps(_mm_setr_pd(f64::MAX, f64::MIN));
        assert_eq_m128(r, _mm_setr_ps(f32::INFINITY, f32::NEG_INFINITY, 0.0, 0.0));

        let r = _mm_cvtpd_ps(_mm_setr_pd(f32::MAX as f64, f32::MIN as f64));
        assert_eq_m128(r, _mm_setr_ps(f32::MAX, f32::MIN, 0.0, 0.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtps_pd() {
        let r = _mm_cvtps_pd(_mm_setr_ps(-1.0, 2.0, -3.0, 5.0));
        assert_eq_m128d(r, _mm_setr_pd(-1.0, 2.0));

        let r = _mm_cvtps_pd(_mm_setr_ps(
            f32::MAX,
            f32::INFINITY,
            f32::NEG_INFINITY,
            f32::MIN,
        ));
        assert_eq_m128d(r, _mm_setr_pd(f32::MAX as f64, f64::INFINITY));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvtpd_epi32() {
        let r = _mm_cvtpd_epi32(_mm_setr_pd(-1.0, 5.0));
        assert_eq_m128i(r, _mm_setr_epi32(-1, 5, 0, 0));

        let r = _mm_cvtpd_epi32(_mm_setr_pd(-1.0, -5.0));
        assert_eq_m128i(r, _mm_setr_epi32(-1, -5, 0, 0));

        let r = _mm_cvtpd_epi32(_mm_setr_pd(f64::MAX, f64::MIN));
        assert_eq_m128i(r, _mm_setr_epi32(i32::MIN, i32::MIN, 0, 0));

        let r = _mm_cvtpd_epi32(_mm_setr_pd(f64::INFINITY, f64::NEG_INFINITY));
        assert_eq_m128i(r, _mm_setr_epi32(i32::MIN, i32::MIN, 0, 0));

        let r = _mm_cvtpd_epi32(_mm_setr_pd(f64::NAN, f64::NAN));
        assert_eq_m128i(r, _mm_setr_epi32(i32::MIN, i32::MIN, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvtsd_si32() {
        let r = _mm_cvtsd_si32(_mm_setr_pd(-2.0, 5.0));
        assert_eq!(r, -2);

        let r = _mm_cvtsd_si32(_mm_setr_pd(f64::MAX, f64::MIN));
        assert_eq!(r, i32::MIN);

        let r = _mm_cvtsd_si32(_mm_setr_pd(f64::NAN, f64::NAN));
        assert_eq!(r, i32::MIN);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvtsd_ss() {
        let a = _mm_setr_ps(-1.1, -2.2, 3.3, 4.4);
        let b = _mm_setr_pd(2.0, -5.0);

        let r = _mm_cvtsd_ss(a, b);

        assert_eq_m128(r, _mm_setr_ps(2.0, -2.2, 3.3, 4.4));

        let a = _mm_setr_ps(-1.1, f32::NEG_INFINITY, f32::MAX, f32::NEG_INFINITY);
        let b = _mm_setr_pd(f64::INFINITY, -5.0);

        let r = _mm_cvtsd_ss(a, b);

        assert_eq_m128(
            r,
            _mm_setr_ps(
                f32::INFINITY,
                f32::NEG_INFINITY,
                f32::MAX,
                f32::NEG_INFINITY,
            ),
        );
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtsd_f64() {
        let r = _mm_cvtsd_f64(_mm_setr_pd(-1.1, 2.2));
        assert_eq!(r, -1.1);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_cvtss_sd() {
        let a = _mm_setr_pd(-1.1, 2.2);
        let b = _mm_setr_ps(1.0, 2.0, 3.0, 4.0);

        let r = _mm_cvtss_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(1.0, 2.2));

        let a = _mm_setr_pd(-1.1, f64::INFINITY);
        let b = _mm_setr_ps(f32::NEG_INFINITY, 2.0, 3.0, 4.0);

        let r = _mm_cvtss_sd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(f64::NEG_INFINITY, f64::INFINITY));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvttpd_epi32() {
        let a = _mm_setr_pd(-1.1, 2.2);
        let r = _mm_cvttpd_epi32(a);
        assert_eq_m128i(r, _mm_setr_epi32(-1, 2, 0, 0));

        let a = _mm_setr_pd(f64::NEG_INFINITY, f64::NAN);
        let r = _mm_cvttpd_epi32(a);
        assert_eq_m128i(r, _mm_setr_epi32(i32::MIN, i32::MIN, 0, 0));
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvttsd_si32() {
        let a = _mm_setr_pd(-1.1, 2.2);
        let r = _mm_cvttsd_si32(a);
        assert_eq!(r, -1);

        let a = _mm_setr_pd(f64::NEG_INFINITY, f64::NAN);
        let r = _mm_cvttsd_si32(a);
        assert_eq!(r, i32::MIN);
    }

    #[simd_test(enable = "sse2")]
    fn test_mm_cvttps_epi32() {
        let a = _mm_setr_ps(-1.1, 2.2, -3.3, 6.6);
        let r = _mm_cvttps_epi32(a);
        assert_eq_m128i(r, _mm_setr_epi32(-1, 2, -3, 6));

        let a = _mm_setr_ps(f32::NEG_INFINITY, f32::INFINITY, f32::MIN, f32::MAX);
        let r = _mm_cvttps_epi32(a);
        assert_eq_m128i(r, _mm_setr_epi32(i32::MIN, i32::MIN, i32::MIN, i32::MIN));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_sd() {
        let r = _mm_set_sd(-1.0_f64);
        assert_eq_m128d(r, _mm_setr_pd(-1.0_f64, 0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set1_pd() {
        let r = _mm_set1_pd(-1.0_f64);
        assert_eq_m128d(r, _mm_setr_pd(-1.0_f64, -1.0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_pd1() {
        let r = _mm_set_pd1(-2.0_f64);
        assert_eq_m128d(r, _mm_setr_pd(-2.0_f64, -2.0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_set_pd() {
        let r = _mm_set_pd(1.0_f64, 5.0_f64);
        assert_eq_m128d(r, _mm_setr_pd(5.0_f64, 1.0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setr_pd() {
        let r = _mm_setr_pd(1.0_f64, -5.0_f64);
        assert_eq_m128d(r, _mm_setr_pd(1.0_f64, -5.0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_setzero_pd() {
        let r = _mm_setzero_pd();
        assert_eq_m128d(r, _mm_setr_pd(0_f64, 0_f64));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_load1_pd() {
        let d = -5.0;
        let r = unsafe { _mm_load1_pd(&d) };
        assert_eq_m128d(r, _mm_setr_pd(d, d));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_load_pd1() {
        let d = -5.0;
        let r = unsafe { _mm_load_pd1(&d) };
        assert_eq_m128d(r, _mm_setr_pd(d, d));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpackhi_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(3.0, 4.0);
        let r = _mm_unpackhi_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(2.0, 4.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_unpacklo_pd() {
        let a = _mm_setr_pd(1.0, 2.0);
        let b = _mm_setr_pd(3.0, 4.0);
        let r = _mm_unpacklo_pd(a, b);
        assert_eq_m128d(r, _mm_setr_pd(1.0, 3.0));
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_shuffle_pd() {
        let a = _mm_setr_pd(1., 2.);
        let b = _mm_setr_pd(3., 4.);
        let expected = _mm_setr_pd(1., 3.);
        let r = _mm_shuffle_pd::<0b00_00_00_00>(a, b);
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_move_sd() {
        let a = _mm_setr_pd(1., 2.);
        let b = _mm_setr_pd(3., 4.);
        let expected = _mm_setr_pd(3., 2.);
        let r = _mm_move_sd(a, b);
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castpd_ps() {
        let a = _mm_set1_pd(0.);
        let expected = _mm_set1_ps(0.);
        let r = _mm_castpd_ps(a);
        assert_eq_m128(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castpd_si128() {
        let a = _mm_set1_pd(0.);
        let expected = _mm_set1_epi64x(0);
        let r = _mm_castpd_si128(a);
        assert_eq_m128i(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castps_pd() {
        let a = _mm_set1_ps(0.);
        let expected = _mm_set1_pd(0.);
        let r = _mm_castps_pd(a);
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castps_si128() {
        let a = _mm_set1_ps(0.);
        let expected = _mm_set1_epi32(0);
        let r = _mm_castps_si128(a);
        assert_eq_m128i(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castsi128_pd() {
        let a = _mm_set1_epi64x(0);
        let expected = _mm_set1_pd(0.);
        let r = _mm_castsi128_pd(a);
        assert_eq_m128d(r, expected);
    }

    #[simd_test(enable = "sse2")]
    const fn test_mm_castsi128_ps() {
        let a = _mm_set1_epi32(0);
        let expected = _mm_set1_ps(0.);
        let r = _mm_castsi128_ps(a);
        assert_eq_m128(r, expected);
    }
}