vlib: improve enqueue_to_next buffer indices extraction

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

diff --git a/src/vppinfra/vector_avx2.h b/src/vppinfra/vector_avx2.h
index c857ad4..584bd20 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 +105,17 @@ _(u64x2, u64x4)
 #undef _
 /* *INDENT-ON* */
 
+always_inline u8x32
+u16x16_pack (u16x16 lo, u16x16 hi)
+{
+  return (u8x32) _mm256_packus_epi16 ((__m256i) lo, (__m256i) hi);
+}
 
-
+always_inline i8x32
+i16x16_pack (i16x16 lo, i16x16 hi)
+{
+  return (i8x32) _mm256_packs_epi16 ((__m256i) lo, (__m256i) hi);
+}
 
 static_always_inline u32
 u8x32_msb_mask (u8x32 v)
@@ -110,28 +123,54 @@ 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 _
 /* *INDENT-ON* */
 
+static_always_inline u64x4
+u64x4_byte_swap (u64x4 v)
+{
+  u8x32 swap = {
+    7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
+    7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
+  };
+  return (u64x4) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
+}
+
+static_always_inline u32x8
+u32x8_byte_swap (u32x8 v)
+{
+  u8x32 swap = {
+    3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12,
+    3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
+  };
+  return (u32x8) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
+}
+
 static_always_inline u16x16
 u16x16_byte_swap (u16x16 v)
 {
@@ -142,6 +181,23 @@ u16x16_byte_swap (u16x16 v)
   return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
 }
 
+static_always_inline u8x32
+u8x32_shuffle (u8x32 v, u8x32 m)
+{
+  return (u8x32) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) m);
+}
+
+#define u8x32_align_right(a, b, imm) \
+  (u8x32) _mm256_alignr_epi8 ((__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)
 {
@@ -188,6 +244,9 @@ u32x8_from_f32x8 (f32x8 v)
   return (u32x8) _mm256_cvttps_epi32 ((__m256) v);
 }
 
+#define u32x8_blend(a,b,m) \
+  (u32x8) _mm256_blend_epi32 ((__m256i) a, (__m256i) b, m)
+
 #define u16x16_blend(v1, v2, mask) \
   (u16x16) _mm256_blend_epi16 ((__m256i) (v1), (__m256i) (v2), mask)
 
@@ -265,6 +324,19 @@ u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
 #define u64x4_permute_lanes(a, b, m) \
   (u64x4) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
 
+static_always_inline u32x8
+u32x8_min (u32x8 a, u32x8 b)
+{
+  return (u32x8) _mm256_min_epu32 ((__m256i) a, (__m256i) b);
+}
+
+static_always_inline u32
+u32x8_min_scalar (u32x8 v)
+{
+  return u32x4_min_scalar (u32x4_min (u32x8_extract_lo (v),
+                                     u32x8_extract_hi (v)));
+}
+
 static_always_inline void
 u32x8_transpose (u32x8 a[8])
 {