From 04f3db3847d242857b9d9d858bcdca538a1be7d7 Mon Sep 17 00:00:00 2001
From: Damjan Marion <damarion@cisco.com>
Date: Fri, 10 Nov 2017 21:55:45 +0100
Subject: dpdk: introduce AVX512 variants of node functions

Change-Id: If581feca0d51d0420c971801aecdf9250c671b36
Signed-off-by: Damjan Marion <damarion@cisco.com>
---
 src/vppinfra/string.h | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

(limited to 'src/vppinfra/string.h')

diff --git a/src/vppinfra/string.h b/src/vppinfra/string.h
index 69a99a3f0ce..914f6a7bbc4 100644
--- a/src/vppinfra/string.h
+++ b/src/vppinfra/string.h
@@ -72,6 +72,71 @@ void clib_memswap (void *_a, void *_b, uword bytes);
 #define clib_memcpy(a,b,c) memcpy(a,b,c)
 #endif
 
+/*
+ * Copy 64 bytes of data to 4 destinations
+ * this function is typically used in quad-loop case when whole cacheline
+ * needs to be copied to 4 different places. First it reads whole cacheline
+ * to 1/2/4 SIMD registers and then it writes data to 4 destinations.
+ */
+
+static_always_inline void
+clib_memcpy64_x4 (void *d0, void *d1, void *d2, void *d3, void *s)
+{
+#if defined (CLIB_HAVE_VEC512)
+  u8x64 __attribute__ ((aligned (1))) r0 = *(((u8x64 *) s) + 0);
+
+  *(((u8x64 *) d0) + 0) = r0;
+  *(((u8x64 *) d1) + 0) = r0;
+  *(((u8x64 *) d2) + 0) = r0;
+  *(((u8x64 *) d3) + 0) = r0;
+#elif defined (CLIB_HAVE_VEC256)
+  u8x32 __attribute__ ((aligned (1))) r0 = *(((u8x32 *) s) + 0);
+  u8x32 __attribute__ ((aligned (1))) r1 = *(((u8x32 *) s) + 1);
+
+  *(((u8x32 *) d0) + 0) = r0;
+  *(((u8x32 *) d0) + 1) = r1;
+
+  *(((u8x32 *) d1) + 0) = r0;
+  *(((u8x32 *) d1) + 1) = r1;
+
+  *(((u8x32 *) d2) + 0) = r0;
+  *(((u8x32 *) d2) + 1) = r1;
+
+  *(((u8x32 *) d3) + 0) = r0;
+  *(((u8x32 *) d3) + 1) = r1;
+#elif defined (CLIB_HAVE_VEC128)
+  u8x16 __attribute__ ((aligned (1))) r0 = *(((u8x16 *) s) + 0);
+  u8x16 __attribute__ ((aligned (1))) r1 = *(((u8x16 *) s) + 1);
+  u8x16 __attribute__ ((aligned (1))) r2 = *(((u8x16 *) s) + 3);
+  u8x16 __attribute__ ((aligned (1))) r3 = *(((u8x16 *) s) + 4);
+
+  *(((u8x16 *) d0) + 0) = r0;
+  *(((u8x16 *) d0) + 1) = r1;
+  *(((u8x16 *) d0) + 2) = r2;
+  *(((u8x16 *) d0) + 3) = r3;
+
+  *(((u8x16 *) d1) + 0) = r0;
+  *(((u8x16 *) d1) + 1) = r1;
+  *(((u8x16 *) d1) + 2) = r2;
+  *(((u8x16 *) d1) + 3) = r3;
+
+  *(((u8x16 *) d2) + 0) = r0;
+  *(((u8x16 *) d2) + 1) = r1;
+  *(((u8x16 *) d2) + 2) = r2;
+  *(((u8x16 *) d2) + 3) = r3;
+
+  *(((u8x16 *) d3) + 0) = r0;
+  *(((u8x16 *) d3) + 1) = r1;
+  *(((u8x16 *) d3) + 2) = r2;
+  *(((u8x16 *) d3) + 3) = r3;
+#else
+  clib_memcpy (d0, s, 64);
+  clib_memcpy (d1, s, 64);
+  clib_memcpy (d2, s, 64);
+  clib_memcpy (d3, s, 64);
+#endif
+}
+
 #endif /* included_clib_string_h */
 
 /*
-- 
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