vppinfra: send minimal needed mask to the set_mempolicy syscall

[vpp.git] / src / vppinfra / vector_avx2.h

diff --git a/src/vppinfra/vector_avx2.h b/src/vppinfra/vector_avx2.h
index 8cc1d77..f5c09a5 100644 (file)
--- a/src/vppinfra/vector_avx2.h
+++ b/src/vppinfra/vector_avx2.h
@@ -75,6 +75,10 @@ u32x8_permute (u32x8 v, u32x8 idx)
   return (u32x8) _mm256_permutevar8x32_epi32 ((__m256i) v, (__m256i) idx);
 }
 
+#define u64x4_permute(v, m0, m1, m2, m3)                                      \
+  (u64x4) _mm256_permute4x64_epi64 (                                          \
+    (__m256i) v, ((m0) | (m1) << 2 | (m2) << 4 | (m3) << 6))
+
 /* _extract_lo, _extract_hi */
 /* *INDENT-OFF* */
 #define _(t1,t2) \
@@ -101,8 +105,19 @@ _(u64x2, u64x4)
 #undef _
 /* *INDENT-ON* */
 
+/* 256 bit packs. */
+#define _(f, t, fn)                                                           \
+  always_inline t t##_pack (f lo, f hi)                                       \
+  {                                                                           \
+    return (t) fn ((__m256i) lo, (__m256i) hi);                               \
+  }
 
+_ (i16x16, i8x32, _mm256_packs_epi16)
+_ (i16x16, u8x32, _mm256_packus_epi16)
+_ (i32x8, i16x16, _mm256_packs_epi32)
+_ (i32x8, u16x16, _mm256_packus_epi32)
 
+#undef _
 
 static_always_inline u32
 u8x32_msb_mask (u8x32 v)
@@ -110,23 +125,29 @@ u8x32_msb_mask (u8x32 v)
   return _mm256_movemask_epi8 ((__m256i) v);
 }
 
-/* _extend_to_ */
+static_always_inline u32
+i8x32_msb_mask (i8x32 v)
+{
+  return _mm256_movemask_epi8 ((__m256i) v);
+}
+
+/* _from_ */
 /* *INDENT-OFF* */
 #define _(f,t,i) \
 static_always_inline t                                                 \
-f##_extend_to_##t (f x)                                                        \
+t##_from_##f (f x)                                                     \
 { return (t) _mm256_cvt##i ((__m128i) x); }
 
 _(u16x8, u32x8, epu16_epi32)
 _(u16x8, u64x4, epu16_epi64)
 _(u32x4, u64x4, epu32_epi64)
-_(u8x16, u16x16, epu8_epi64)
+_ (u8x16, u16x16, epu8_epi16)
 _(u8x16, u32x8, epu8_epi32)
 _(u8x16, u64x4, epu8_epi64)
 _(i16x8, i32x8, epi16_epi32)
 _(i16x8, i64x4, epi16_epi64)
 _(i32x4, i64x4, epi32_epi64)
-_(i8x16, i16x16, epi8_epi64)
+_ (i8x16, i16x16, epi8_epi16)
 _(i8x16, i32x8, epi8_epi32)
 _(i8x16, i64x4, epi8_epi64)
 #undef _
@@ -162,12 +183,36 @@ u16x16_byte_swap (u16x16 v)
   return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
 }
 
+#define u8x32_align_right(a, b, imm) \
+  (u8x32) _mm256_alignr_epi8 ((__m256i) a, (__m256i) b, imm)
+
+#define u64x4_align_right(a, b, imm)                                          \
+  (u64x4) _mm256_alignr_epi64 ((__m256i) a, (__m256i) b, imm)
+
+static_always_inline u32
+u32x8_sum_elts (u32x8 sum8)
+{
+  sum8 += (u32x8) u8x32_align_right (sum8, sum8, 8);
+  sum8 += (u32x8) u8x32_align_right (sum8, sum8, 4);
+  return sum8[0] + sum8[4];
+}
+
 static_always_inline u32x8
 u32x8_hadd (u32x8 v1, u32x8 v2)
 {
   return (u32x8) _mm256_hadd_epi32 ((__m256i) v1, (__m256i) v2);
 }
 
+static_always_inline u32
+u32x8_hxor (u32x8 v)
+{
+  u32x4 v4;
+  v4 = u32x8_extract_lo (v) ^ u32x8_extract_hi (v);
+  v4 ^= (u32x4) u8x16_align_right (v4, v4, 8);
+  v4 ^= (u32x4) u8x16_align_right (v4, v4, 4);
+  return v4[0];
+}
+
 static_always_inline u16x16
 u16x16_mask_last (u16x16 v, u8 n_last)
 {
@@ -270,12 +315,6 @@ u32x8_scatter_one (u32x8 r, int index, void *p)
   *(u32 *) p = r[index];
 }
 
-static_always_inline u8x32
-u8x32_is_greater (u8x32 v1, u8x32 v2)
-{
-  return (u8x32) _mm256_cmpgt_epi8 ((__m256i) v1, (__m256i) v2);
-}
-
 static_always_inline u8x32
 u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
 {