Add u32x4_extend_to_u64x2 for aarch64 using NEON intrinsics

This is used in vlib_get_buffers_with_offset.

Change-Id: If4ff776bc97d21a22e870300b164eeb6a5ec3638
Signed-off-by: Sirshak Das <sirshak.das@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Brian Brooks <brian.brooks@arm.com>
Reviewed-by: Yi He <yi.he@arm.com>
Verified-by: Lijian Zhang <lijian.zhang@arm.com>

diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h
index adea39a..2c3578c 100644 (file)
--- a/src/vppinfra/vector_neon.h
+++ b/src/vppinfra/vector_neon.h
@@ -140,6 +140,12 @@ u32x4_hadd (u32x4 v1, u32x4 v2)
   return (u32x4) vpaddq_u32 (v1, v2);
 }
 
+static_always_inline u64x2
+u32x4_extend_to_u64x2 (u32x4 v)
+{
+  return vmovl_u32 (vget_low_u32 (v));
+}
+
 #define CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE
 #define CLIB_VEC128_SPLAT_DEFINED
 #endif /* included_vector_neon_h */