vppinfra: add 128-bit and 512-bit a ^ b ^ c shortcut

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

diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h
index 81d99a6..3855f55 100644 (file)
--- a/src/vppinfra/vector_neon.h
+++ b/src/vppinfra/vector_neon.h
@@ -203,6 +203,17 @@ u8x16_reflect (u8x16 v)
   return (u8x16) vqtbl1q_u8 (v, mask);
 }
 
+static_always_inline u8x16
+u8x16_xor3 (u8x16 a, u8x16 b, u8x16 c)
+{
+#if __GNUC__ == 8 && __ARM_FEATURE_SHA3 == 1
+  u8x16 r;
+__asm__ ("eor3 %0.16b,%1.16b,%2.16b,%3.16b": "=w" (r): "0" (a), "w" (b), "w" (c):);
+  return r;
+#endif
+  return a ^ b ^ c;
+}
+
 #define CLIB_HAVE_VEC128_MSB_MASK
 
 #define CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE