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-rw-r--r--src/vppinfra/vector_sse2.h705
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diff --git a/src/vppinfra/vector_sse2.h b/src/vppinfra/vector_sse2.h
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+++ b/src/vppinfra/vector_sse2.h
@@ -0,0 +1,705 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ Copyright (c) 2005 Eliot Dresselhaus
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef included_vector_sse2_h
+#define included_vector_sse2_h
+
+#include <vppinfra/error_bootstrap.h> /* for ASSERT */
+#include <x86intrin.h>
+
+/* 128 bit interleaves. */
+always_inline u8x16
+u8x16_interleave_hi (u8x16 a, u8x16 b)
+{
+ return (u8x16) _mm_unpackhi_epi8 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u8x16
+u8x16_interleave_lo (u8x16 a, u8x16 b)
+{
+ return (u8x16) _mm_unpacklo_epi8 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u16x8
+u16x8_interleave_hi (u16x8 a, u16x8 b)
+{
+ return (u16x8) _mm_unpackhi_epi16 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u16x8
+u16x8_interleave_lo (u16x8 a, u16x8 b)
+{
+ return (u16x8) _mm_unpacklo_epi16 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u32x4
+u32x4_interleave_hi (u32x4 a, u32x4 b)
+{
+ return (u32x4) _mm_unpackhi_epi32 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u32x4
+u32x4_interleave_lo (u32x4 a, u32x4 b)
+{
+ return (u32x4) _mm_unpacklo_epi32 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u64x2
+u64x2_interleave_hi (u64x2 a, u64x2 b)
+{
+ return (u64x2) _mm_unpackhi_epi64 ((__m128i) a, (__m128i) b);
+}
+
+always_inline u64x2
+u64x2_interleave_lo (u64x2 a, u64x2 b)
+{
+ return (u64x2) _mm_unpacklo_epi64 ((__m128i) a, (__m128i) b);
+}
+
+/* 64 bit interleaves. */
+always_inline u8x8
+u8x8_interleave_hi (u8x8 a, u8x8 b)
+{
+ return (u8x8) _m_punpckhbw ((__m64) a, (__m64) b);
+}
+
+always_inline u8x8
+u8x8_interleave_lo (u8x8 a, u8x8 b)
+{
+ return (u8x8) _m_punpcklbw ((__m64) a, (__m64) b);
+}
+
+always_inline u16x4
+u16x4_interleave_hi (u16x4 a, u16x4 b)
+{
+ return (u16x4) _m_punpckhwd ((__m64) a, (__m64) b);
+}
+
+always_inline u16x4
+u16x4_interleave_lo (u16x4 a, u16x4 b)
+{
+ return (u16x4) _m_punpcklwd ((__m64) a, (__m64) b);
+}
+
+always_inline u32x2
+u32x2_interleave_hi (u32x2 a, u32x2 b)
+{
+ return (u32x2) _m_punpckhdq ((__m64) a, (__m64) b);
+}
+
+always_inline u32x2
+u32x2_interleave_lo (u32x2 a, u32x2 b)
+{
+ return (u32x2) _m_punpckldq ((__m64) a, (__m64) b);
+}
+
+/* 128 bit packs. */
+always_inline u8x16
+u16x8_pack (u16x8 lo, u16x8 hi)
+{
+ return (u8x16) _mm_packus_epi16 ((__m128i) lo, (__m128i) hi);
+}
+
+always_inline i8x16
+i16x8_pack (i16x8 lo, i16x8 hi)
+{
+ return (i8x16) _mm_packs_epi16 ((__m128i) lo, (__m128i) hi);
+}
+
+always_inline u16x8
+u32x4_pack (u32x4 lo, u32x4 hi)
+{
+ return (u16x8) _mm_packs_epi32 ((__m128i) lo, (__m128i) hi);
+}
+
+/* 64 bit packs. */
+always_inline u8x8
+u16x4_pack (u16x4 lo, u16x4 hi)
+{
+ return (u8x8) _m_packuswb ((__m64) lo, (__m64) hi);
+}
+
+always_inline i8x8
+i16x4_pack (i16x4 lo, i16x4 hi)
+{
+ return (i8x8) _m_packsswb ((__m64) lo, (__m64) hi);
+}
+
+always_inline u16x4
+u32x2_pack (u32x2 lo, u32x2 hi)
+{
+ return (u16x4) _m_packssdw ((__m64) lo, (__m64) hi);
+}
+
+always_inline i16x4
+i32x2_pack (i32x2 lo, i32x2 hi)
+{
+ return (i16x4) _m_packssdw ((__m64) lo, (__m64) hi);
+}
+
+/* Splats: replicate scalar value into vector. */
+always_inline u64x2
+u64x2_splat (u64 a)
+{
+ u64x2 x = { a, a };
+ return x;
+}
+
+always_inline u32x4
+u32x4_splat (u32 a)
+{
+ u32x4 x = { a, a, a, a };
+ return x;
+}
+
+always_inline u16x8
+u16x8_splat (u16 a)
+{
+ u16x8 x = { a, a, a, a, a, a, a, a };
+ return x;
+}
+
+always_inline u8x16
+u8x16_splat (u8 a)
+{
+ u8x16 x = { a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a };
+ return x;
+}
+
+always_inline u32x2
+u32x2_splat (u32 a)
+{
+ u32x2 x = { a, a };
+ return x;
+}
+
+always_inline u16x4
+u16x4_splat (u16 a)
+{
+ u16x4 x = { a, a, a, a };
+ return x;
+}
+
+always_inline u8x8
+u8x8_splat (u8 a)
+{
+ u8x8 x = { a, a, a, a, a, a, a, a };
+ return x;
+}
+
+#define i64x2_splat u64x2_splat
+#define i32x4_splat u32x4_splat
+#define i16x8_splat u16x8_splat
+#define i8x16_splat u8x16_splat
+#define i32x2_splat u32x2_splat
+#define i16x4_splat u16x4_splat
+#define i8x8_splat u8x8_splat
+
+#ifndef __ICC
+always_inline u64x2
+u64x2_read_lo (u64x2 x, u64 * a)
+{
+ return (u64x2) _mm_loadl_pi ((__m128) x, (__m64 *) a);
+}
+
+always_inline u64x2
+u64x2_read_hi (u64x2 x, u64 * a)
+{
+ return (u64x2) _mm_loadh_pi ((__m128) x, (__m64 *) a);
+}
+
+always_inline void
+u64x2_write_lo (u64x2 x, u64 * a)
+{
+ _mm_storel_pi ((__m64 *) a, (__m128) x);
+}
+
+always_inline void
+u64x2_write_hi (u64x2 x, u64 * a)
+{
+ _mm_storeh_pi ((__m64 *) a, (__m128) x);
+}
+#endif
+
+/* Unaligned loads/stores. */
+
+#define _(t) \
+ always_inline void t##_store_unaligned (t x, t * a) \
+ { _mm_storeu_si128 ((__m128i *) a, (__m128i) x); } \
+ always_inline t t##_load_unaligned (t * a) \
+ { return (t) _mm_loadu_si128 ((__m128i *) a); }
+
+_(u8x16) _(u16x8) _(u32x4) _(u64x2) _(i8x16) _(i16x8) _(i32x4) _(i64x2)
+#undef _
+#define _signed_binop(n,m,f,g) \
+ /* Unsigned */ \
+ always_inline u##n##x##m \
+ u##n##x##m##_##f (u##n##x##m x, u##n##x##m y) \
+ { return (u##n##x##m) _mm_##g##n ((__m128i) x, (__m128i) y); } \
+ \
+ /* Signed */ \
+ always_inline i##n##x##m \
+ i##n##x##m##_##f (i##n##x##m x, i##n##x##m y) \
+ { return (i##n##x##m) _mm_##g##n ((__m128i) x, (__m128i) y); }
+/* Addition/subtraction. */
+ _signed_binop (8, 16, add, add_epi)
+_signed_binop (16, 8, add, add_epi)
+_signed_binop (32, 4, add, add_epi)
+_signed_binop (64, 2, add, add_epi)
+_signed_binop (8, 16, sub, sub_epi)
+_signed_binop (16, 8, sub, sub_epi)
+_signed_binop (32, 4, sub, sub_epi) _signed_binop (64, 2, sub, sub_epi)
+/* Addition/subtraction with saturation. */
+ _signed_binop (8, 16, add_saturate, adds_epu)
+_signed_binop (16, 8, add_saturate, adds_epu)
+_signed_binop (8, 16, sub_saturate, subs_epu)
+_signed_binop (16, 8, sub_saturate, subs_epu)
+/* Multiplication. */
+ always_inline i16x8 i16x8_mul_lo (i16x8 x, i16x8 y)
+{
+ return (i16x8) _mm_mullo_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u16x8
+u16x8_mul_lo (u16x8 x, u16x8 y)
+{
+ return (u16x8) _mm_mullo_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i16x8
+i16x8_mul_hi (i16x8 x, i16x8 y)
+{
+ return (i16x8) _mm_mulhi_epu16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u16x8
+u16x8_mul_hi (u16x8 x, u16x8 y)
+{
+ return (u16x8) _mm_mulhi_epu16 ((__m128i) x, (__m128i) y);
+}
+
+/* 128 bit shifts. */
+
+#define _(p,a,b,c,f) \
+ always_inline p##a##x##b p##a##x##b##_ishift_##c (p##a##x##b x, int i) \
+ { return (p##a##x##b) _mm_##f##i_epi##a ((__m128i) x, i); } \
+ \
+ always_inline p##a##x##b p##a##x##b##_shift_##c (p##a##x##b x, p##a##x##b y) \
+ { return (p##a##x##b) _mm_##f##_epi##a ((__m128i) x, (__m128i) y); }
+
+_(u, 16, 8, left, sll)
+_(u, 32, 4, left, sll)
+_(u, 64, 2, left, sll)
+_(u, 16, 8, right, srl)
+_(u, 32, 4, right, srl)
+_(u, 64, 2, right, srl)
+_(i, 16, 8, left, sll)
+_(i, 32, 4, left, sll)
+_(i, 64, 2, left, sll) _(i, 16, 8, right, sra) _(i, 32, 4, right, sra)
+#undef _
+/* 64 bit shifts. */
+ always_inline u16x4
+u16x4_shift_left (u16x4 x, u16x4 i)
+{
+ return (u16x4) _m_psllw ((__m64) x, (__m64) i);
+};
+
+always_inline u32x2
+u32x2_shift_left (u32x2 x, u32x2 i)
+{
+ return (u32x2) _m_pslld ((__m64) x, (__m64) i);
+};
+
+always_inline u16x4
+u16x4_shift_right (u16x4 x, u16x4 i)
+{
+ return (u16x4) _m_psrlw ((__m64) x, (__m64) i);
+};
+
+always_inline u32x2
+u32x2_shift_right (u32x2 x, u32x2 i)
+{
+ return (u32x2) _m_psrld ((__m64) x, (__m64) i);
+};
+
+always_inline i16x4
+i16x4_shift_left (i16x4 x, i16x4 i)
+{
+ return (i16x4) _m_psllw ((__m64) x, (__m64) i);
+};
+
+always_inline i32x2
+i32x2_shift_left (i32x2 x, i32x2 i)
+{
+ return (i32x2) _m_pslld ((__m64) x, (__m64) i);
+};
+
+always_inline i16x4
+i16x4_shift_right (i16x4 x, i16x4 i)
+{
+ return (i16x4) _m_psraw ((__m64) x, (__m64) i);
+};
+
+always_inline i32x2
+i32x2_shift_right (i32x2 x, i32x2 i)
+{
+ return (i32x2) _m_psrad ((__m64) x, (__m64) i);
+};
+
+#define u8x16_word_shift_left(a,n) (u8x16) _mm_slli_si128((__m128i) a, n)
+#define u8x16_word_shift_right(a,n) (u8x16) _mm_srli_si128((__m128i) a, n)
+
+#define i8x16_word_shift_left(a,n) \
+ ((i8x16) u8x16_word_shift_left((u8x16) (a), (n)))
+#define i8x16_word_shift_right(a,n) \
+ ((i8x16) u8x16_word_shift_right((u8x16) (a), (n)))
+
+#define u16x8_word_shift_left(a,n) \
+ ((u16x8) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u16)))
+#define i16x8_word_shift_left(a,n) \
+ ((u16x8) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u16)))
+#define u16x8_word_shift_right(a,n) \
+ ((u16x8) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u16)))
+#define i16x8_word_shift_right(a,n) \
+ ((i16x8) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u16)))
+
+#define u32x4_word_shift_left(a,n) \
+ ((u32x4) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u32)))
+#define i32x4_word_shift_left(a,n) \
+ ((u32x4) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u32)))
+#define u32x4_word_shift_right(a,n) \
+ ((u32x4) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u32)))
+#define i32x4_word_shift_right(a,n) \
+ ((i32x4) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u32)))
+
+#define u64x2_word_shift_left(a,n) \
+ ((u64x2) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u64)))
+#define i64x2_word_shift_left(a,n) \
+ ((u64x2) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u64)))
+#define u64x2_word_shift_right(a,n) \
+ ((u64x2) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u64)))
+#define i64x2_word_shift_right(a,n) \
+ ((i64x2) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u64)))
+
+/* SSE2 has no rotate instructions: use shifts to simulate them. */
+#define _(t,n,lr1,lr2) \
+ always_inline t##x##n \
+ t##x##n##_irotate_##lr1 (t##x##n w, int i) \
+ { \
+ ASSERT (i >= 0 && i <= BITS (t)); \
+ return (t##x##n##_ishift_##lr1 (w, i) \
+ | t##x##n##_ishift_##lr2 (w, BITS (t) - i)); \
+ } \
+ \
+ always_inline t##x##n \
+ t##x##n##_rotate_##lr1 (t##x##n w, t##x##n i) \
+ { \
+ t##x##n j = t##x##n##_splat (BITS (t)); \
+ return (t##x##n##_shift_##lr1 (w, i) \
+ | t##x##n##_shift_##lr2 (w, j - i)); \
+ }
+
+_(u16, 8, left, right);
+_(u16, 8, right, left);
+_(u32, 4, left, right);
+_(u32, 4, right, left);
+_(u64, 2, left, right);
+_(u64, 2, right, left);
+
+#undef _
+
+#ifndef __clang__
+#define _(t,n,lr1,lr2) \
+ always_inline t##x##n \
+ t##x##n##_word_rotate2_##lr1 (t##x##n w0, t##x##n w1, int i) \
+ { \
+ int m = sizeof (t##x##n) / sizeof (t); \
+ ASSERT (i >= 0 && i < m); \
+ return (t##x##n##_word_shift_##lr1 (w0, i) \
+ | t##x##n##_word_shift_##lr2 (w1, m - i)); \
+ } \
+ \
+ always_inline t##x##n \
+ t##x##n##_word_rotate_##lr1 (t##x##n w0, int i) \
+ { return t##x##n##_word_rotate2_##lr1 (w0, w0, i); }
+
+_(u8, 16, left, right);
+_(u8, 16, right, left);
+_(u16, 8, left, right);
+_(u16, 8, right, left);
+_(u32, 4, left, right);
+_(u32, 4, right, left);
+_(u64, 2, left, right);
+_(u64, 2, right, left);
+
+#undef _
+#endif
+
+/* Compare operations. */
+always_inline u8x16
+u8x16_is_equal (u8x16 x, u8x16 y)
+{
+ return (u8x16) _mm_cmpeq_epi8 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i8x16
+i8x16_is_equal (i8x16 x, i8x16 y)
+{
+ return (i8x16) _mm_cmpeq_epi8 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u16x8
+u16x8_is_equal (u16x8 x, u16x8 y)
+{
+ return (u16x8) _mm_cmpeq_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i16x8
+i16x8_is_equal (i16x8 x, i16x8 y)
+{
+ return (i16x8) _mm_cmpeq_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u32x4
+u32x4_is_equal (u32x4 x, u32x4 y)
+{
+ return (u32x4) _mm_cmpeq_epi32 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i32x4
+i32x4_is_equal (i32x4 x, i32x4 y)
+{
+ return (i32x4) _mm_cmpeq_epi32 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u8x16
+i8x16_is_greater (i8x16 x, i8x16 y)
+{
+ return (u8x16) _mm_cmpgt_epi8 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u16x8
+i16x8_is_greater (i16x8 x, i16x8 y)
+{
+ return (u16x8) _mm_cmpgt_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u32x4
+i32x4_is_greater (i32x4 x, i32x4 y)
+{
+ return (u32x4) _mm_cmpgt_epi32 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u8x16
+u8x16_is_zero (u8x16 x)
+{
+ u8x16 zero = { 0 };
+ return u8x16_is_equal (x, zero);
+}
+
+always_inline u16x8
+u16x8_is_zero (u16x8 x)
+{
+ u16x8 zero = { 0 };
+ return u16x8_is_equal (x, zero);
+}
+
+always_inline u32x4
+u32x4_is_zero (u32x4 x)
+{
+ u32x4 zero = { 0 };
+ return u32x4_is_equal (x, zero);
+}
+
+#define u32x4_select(A,MASK) \
+({ \
+ u32x4 _x, _y; \
+ _x = (A); \
+ asm volatile ("pshufd %[mask], %[x], %[y]" \
+ : /* outputs */ [y] "=x" (_y) \
+ : /* inputs */ [x] "x" (_x), [mask] "i" (MASK)); \
+ _y; \
+})
+
+#define u32x4_splat_word(x,i) \
+ u32x4_select ((x), (((i) << (2*0)) \
+ | ((i) << (2*1)) \
+ | ((i) << (2*2)) \
+ | ((i) << (2*3))))
+
+/* Extract low order 32 bit word. */
+always_inline u32
+u32x4_get0 (u32x4 x)
+{
+ u32 result;
+ asm volatile ("movd %[x], %[result]": /* outputs */ [result] "=r" (result)
+ : /* inputs */ [x] "x" (x));
+ return result;
+}
+
+always_inline u32x4
+u32x4_set0 (u32 x)
+{
+ u32x4 result;
+ asm volatile ("movd %[x], %[result]": /* outputs */ [result] "=x" (result)
+ : /* inputs */ [x] "r" (x));
+ return result;
+}
+
+always_inline i32x4
+i32x4_set0 (i32 x)
+{
+ return (i32x4) u32x4_set0 ((u32) x);
+}
+
+always_inline i32
+i32x4_get0 (i32x4 x)
+{
+ return (i32) u32x4_get0 ((u32x4) x);
+}
+
+/* Converts all ones/zeros compare mask to bitmap. */
+always_inline u32
+u8x16_compare_byte_mask (u8x16 x)
+{
+ return _mm_movemask_epi8 ((__m128i) x);
+}
+
+extern u8 u32x4_compare_word_mask_table[256];
+
+always_inline u32
+u32x4_compare_word_mask (u32x4 x)
+{
+ u32 m = u8x16_compare_byte_mask ((u8x16) x);
+ return (u32x4_compare_word_mask_table[(m >> 0) & 0xff]
+ | (u32x4_compare_word_mask_table[(m >> 8) & 0xff] << 2));
+}
+
+always_inline u32
+u8x16_zero_byte_mask (u8x16 x)
+{
+ u8x16 zero = { 0 };
+ return u8x16_compare_byte_mask (u8x16_is_equal (x, zero));
+}
+
+always_inline u32
+u16x8_zero_byte_mask (u16x8 x)
+{
+ u16x8 zero = { 0 };
+ return u8x16_compare_byte_mask ((u8x16) u16x8_is_equal (x, zero));
+}
+
+always_inline u32
+u32x4_zero_byte_mask (u32x4 x)
+{
+ u32x4 zero = { 0 };
+ return u8x16_compare_byte_mask ((u8x16) u32x4_is_equal (x, zero));
+}
+
+always_inline u8x16
+u8x16_max (u8x16 x, u8x16 y)
+{
+ return (u8x16) _mm_max_epu8 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u32
+u8x16_max_scalar (u8x16 x)
+{
+ x = u8x16_max (x, u8x16_word_shift_right (x, 8));
+ x = u8x16_max (x, u8x16_word_shift_right (x, 4));
+ x = u8x16_max (x, u8x16_word_shift_right (x, 2));
+ x = u8x16_max (x, u8x16_word_shift_right (x, 1));
+ return _mm_extract_epi16 ((__m128i) x, 0) & 0xff;
+}
+
+always_inline u8x16
+u8x16_min (u8x16 x, u8x16 y)
+{
+ return (u8x16) _mm_min_epu8 ((__m128i) x, (__m128i) y);
+}
+
+always_inline u8
+u8x16_min_scalar (u8x16 x)
+{
+ x = u8x16_min (x, u8x16_word_shift_right (x, 8));
+ x = u8x16_min (x, u8x16_word_shift_right (x, 4));
+ x = u8x16_min (x, u8x16_word_shift_right (x, 2));
+ x = u8x16_min (x, u8x16_word_shift_right (x, 1));
+ return _mm_extract_epi16 ((__m128i) x, 0) & 0xff;
+}
+
+always_inline i16x8
+i16x8_max (i16x8 x, i16x8 y)
+{
+ return (i16x8) _mm_max_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i16
+i16x8_max_scalar (i16x8 x)
+{
+ x = i16x8_max (x, i16x8_word_shift_right (x, 4));
+ x = i16x8_max (x, i16x8_word_shift_right (x, 2));
+ x = i16x8_max (x, i16x8_word_shift_right (x, 1));
+ return _mm_extract_epi16 ((__m128i) x, 0);
+}
+
+always_inline i16x8
+i16x8_min (i16x8 x, i16x8 y)
+{
+ return (i16x8) _mm_min_epi16 ((__m128i) x, (__m128i) y);
+}
+
+always_inline i16
+i16x8_min_scalar (i16x8 x)
+{
+ x = i16x8_min (x, i16x8_word_shift_right (x, 4));
+ x = i16x8_min (x, i16x8_word_shift_right (x, 2));
+ x = i16x8_min (x, i16x8_word_shift_right (x, 1));
+ return _mm_extract_epi16 ((__m128i) x, 0);
+}
+
+#undef _signed_binop
+
+#endif /* included_vector_sse2_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */