Implemented the missing AVX512BF16 intrinsics

Author: sayantn

crates/core_arch/missing-x86.md

@@ -147,27 +147,12 @@
 </p></details>
 
 
-<details><summary>["AVX512_BF16", "AVX512F"]</summary><p>
-
-  * [ ] [`_mm512_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm512_cvtpbh_ps)
-  * [ ] [`_mm512_mask_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm512_mask_cvtpbh_ps)
-  * [ ] [`_mm512_maskz_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm512_maskz_cvtpbh_ps)
-  * [ ] [`_mm_cvtsbh_ss`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cvtsbh_ss)
-</p></details>
-
-
 <details><summary>["AVX512_BF16", "AVX512VL"]</summary><p>
 
-  * [ ] [`_mm256_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm256_cvtpbh_ps)
-  * [ ] [`_mm256_mask_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm256_mask_cvtpbh_ps)
-  * [ ] [`_mm256_maskz_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm256_maskz_cvtpbh_ps)
   * [ ] [`_mm_cvtneps_pbh`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cvtneps_pbh)
   * [ ] [`_mm_cvtness_sbh`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cvtness_sbh)
-  * [ ] [`_mm_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cvtpbh_ps)
   * [ ] [`_mm_mask_cvtneps_pbh`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_mask_cvtneps_pbh)
-  * [ ] [`_mm_mask_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_mask_cvtpbh_ps)
   * [ ] [`_mm_maskz_cvtneps_pbh`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_maskz_cvtneps_pbh)
-  * [ ] [`_mm_maskz_cvtpbh_ps`](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_maskz_cvtpbh_ps)
 </p></details>
 
 

crates/core_arch/src/x86/avx512bf16.rs

@@ -365,6 +365,85 @@ pub unsafe fn _mm512_maskz_dpbf16_ps(
     transmute(simd_select_bitmask(k, rst, zero))
 }
 
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512f")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm512_cvtpbh_ps(a: __m256bh) -> __m512 {
+    _mm512_castsi512_ps(_mm512_slli_epi32::<16>(_mm512_cvtepi16_epi32(transmute(a))))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512f")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm512_mask_cvtpbh_ps(src: __m512, k: __mmask16, a: __m256bh) -> __m512 {
+    let cvt = _mm512_cvtpbh_ps(a);
+    transmute(simd_select_bitmask(k, cvt.as_f32x16(), src.as_f32x16()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512f")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm512_maskz_cvtpbh_ps(k: __mmask16, a: __m256bh) -> __m512 {
+    let cvt = _mm512_cvtpbh_ps(a);
+    let zero = _mm512_setzero_ps();
+    transmute(simd_select_bitmask(k, cvt.as_f32x16(), zero.as_f32x16()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm256_cvtpbh_ps(a: __m128bh) -> __m256 {
+    _mm256_castsi256_ps(_mm256_slli_epi32::<16>(_mm256_cvtepi16_epi32(transmute(a))))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm256_mask_cvtpbh_ps(src: __m256, k: __mmask8, a: __m128bh) -> __m256 {
+    let cvt = _mm256_cvtpbh_ps(a);
+    transmute(simd_select_bitmask(k, cvt.as_f32x8(), src.as_f32x8()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm256_maskz_cvtpbh_ps(k: __mmask8, a: __m128bh) -> __m256 {
+    let cvt = _mm256_cvtpbh_ps(a);
+    let zero = _mm256_setzero_ps();
+    transmute(simd_select_bitmask(k, cvt.as_f32x8(), zero.as_f32x8()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm_cvtpbh_ps(a: __m128bh) -> __m128 {
+    _mm_castsi128_ps(_mm_slli_epi32::<16>(_mm_cvtepi16_epi32(transmute(a))))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm_mask_cvtpbh_ps(src: __m128, k: __mmask8, a: __m128bh) -> __m128 {
+    let cvt = _mm_cvtpbh_ps(a);
+    transmute(simd_select_bitmask(k, cvt.as_f32x4(), src.as_f32x4()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512vl")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm_maskz_cvtpbh_ps(k: __mmask8, a: __m128bh) -> __m128 {
+    let cvt = _mm_cvtpbh_ps(a);
+    let zero = _mm_setzero_ps();
+    transmute(simd_select_bitmask(k, cvt.as_f32x4(), zero.as_f32x4()))
+}
+
+#[inline]
+#[target_feature(enable = "avx512bf16,avx512f")]
+#[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
+pub unsafe fn _mm_cvtsbh_ss(a: u16) -> f32 {
+    f32::from_bits((a as u32) << 16)
+}
+
 #[cfg(test)]
 mod tests {
     use crate::{core_arch::x86::*, mem::transmute};
@@ -1592,4 +1671,110 @@ mod tests {
         ];
         assert_eq!(result, expected_result);
     }
+
+    const BF16_ONE: u16 = 0b0_01111111_0000000;
+    const BF16_TWO: u16 = 0b0_10000000_0000000;
+    const BF16_THREE: u16 = 0b0_10000000_1000000;
+    const BF16_FOUR: u16 = 0b0_10000001_0000000;
+    const BF16_FIVE: u16 = 0b0_10000001_0100000;
+    const BF16_SIX: u16 = 0b0_10000001_1000000;
+    const BF16_SEVEN: u16 = 0b0_10000001_1100000;
+    const BF16_EIGHT: u16 = 0b0_10000010_0000000;
+
+    #[simd_test(enable = "avx512bf16")]
+    unsafe fn test_mm512_cvtpbh_ps() {
+        let a = __m256bh(
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+        );
+        let r = _mm512_cvtpbh_ps(a);
+        let e = _mm512_setr_ps(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);
+        assert_eq_m512(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16")]
+    unsafe fn test_mm512_mask_cvtpbh_ps() {
+        let a = __m256bh(
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+        );
+        let src = _mm512_setr_ps(9., 10., 11., 12., 13., 14., 15., 16., 9., 10., 11., 12., 13., 14., 15., 16.);
+        let k = 0b1010_1010_1010_1010;
+        let r = _mm512_mask_cvtpbh_ps(src, k, a);
+        let e = _mm512_setr_ps(9., 2., 11., 4., 13., 6., 15., 8., 9., 2., 11., 4., 13., 6., 15., 8.);
+        assert_eq_m512(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16")]
+    unsafe fn test_mm512_maskz_cvtpbh_ps() {
+        let a = __m256bh(
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+            BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT,
+        );
+        let k = 0b1010_1010_1010_1010;
+        let r = _mm512_maskz_cvtpbh_ps(k, a);
+        let e = _mm512_setr_ps(0., 2., 0., 4., 0., 6., 0., 8., 0., 2., 0., 4., 0., 6., 0., 8.);
+        assert_eq_m512(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+    unsafe fn test_mm256_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT);
+        let r = _mm256_cvtpbh_ps(a);
+        let e = _mm256_setr_ps(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0);
+        assert_eq_m256(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+unsafe fn test_mm256_mask_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT);
+        let src = _mm256_setr_ps(9., 10., 11., 12., 13., 14., 15., 16.);
+        let k = 0b1010_1010;
+        let r = _mm256_mask_cvtpbh_ps(src, k, a);
+        let e = _mm256_setr_ps(9., 2., 11., 4., 13., 6., 15., 8.);
+        assert_eq_m256(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+    unsafe fn test_mm256_maskz_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, BF16_FIVE, BF16_SIX, BF16_SEVEN, BF16_EIGHT);
+        let k = 0b1010_1010;
+        let r = _mm256_maskz_cvtpbh_ps(k, a);
+        let e = _mm256_setr_ps(0., 2., 0., 4., 0., 6., 0., 8.);
+        assert_eq_m256(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+    unsafe fn test_mm_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, 0, 0, 0, 0);
+        let r = _mm_cvtpbh_ps(a);
+        let e = _mm_setr_ps(1.0, 2.0, 3.0, 4.0);
+        assert_eq_m128(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+    unsafe fn test_mm_mask_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, 0, 0, 0, 0);
+        let src = _mm_setr_ps(9., 10., 11., 12.);
+        let k = 0b1010;
+        let r = _mm_mask_cvtpbh_ps(src, k, a);
+        let e = _mm_setr_ps(9., 2., 11., 4.);
+        assert_eq_m128(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16,avx512vl")]
+    unsafe fn test_mm_maskz_cvtpbh_ps() {
+        let a = __m128bh(BF16_ONE, BF16_TWO, BF16_THREE, BF16_FOUR, 0, 0, 0, 0);
+        let k = 0b1010;
+        let r = _mm_maskz_cvtpbh_ps(k, a);
+        let e = _mm_setr_ps(0., 2., 0., 4.);
+        assert_eq_m128(r, e);
+    }
+
+    #[simd_test(enable = "avx512bf16")]
+    unsafe fn test_mm_cvtsbh_ss() {
+        let r = _mm_cvtsbh_ss(BF16_ONE);
+        assert_eq!(r, 1.);
+    }
+
 }

crates/stdarch-verify/tests/x86-intel.rs

@@ -699,7 +699,7 @@ fn equate(
         (&Type::PrimSigned(32), "__int32" | "const int" | "int") => {}
         (&Type::PrimSigned(64), "__int64" | "long long") => {}
         (&Type::PrimUnsigned(8), "unsigned char") => {}
-        (&Type::PrimUnsigned(16), "unsigned short") => {}
+        (&Type::PrimUnsigned(16), "unsigned short" | "__bfloat16") => {}
         (
             &Type::PrimUnsigned(32),
             "unsigned __int32" | "unsigned int" | "unsigned long" | "const unsigned int",