summaryrefslogtreecommitdiffstats
path: root/src/vppinfra/vector_sse42.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/vppinfra/vector_sse42.h')
-rw-r--r--src/vppinfra/vector_sse42.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/vppinfra/vector_sse42.h b/src/vppinfra/vector_sse42.h
index 2b8927b6920..7c8e6255385 100644
--- a/src/vppinfra/vector_sse42.h
+++ b/src/vppinfra/vector_sse42.h
@@ -493,6 +493,68 @@ u8x16_xor3 (u8x16 a, u8x16 b, u8x16 c)
return a ^ b ^ c;
}
+static_always_inline u8x16
+u8x16_load_partial (u8 *data, uword n)
+{
+ u8x16 r = {};
+#if defined(CLIB_HAVE_VEC128_MASK_LOAD_STORE)
+ return u8x16_mask_load_zero (data, pow2_mask (n));
+#endif
+ if (n > 7)
+ {
+ u64x2 r;
+ r[1] = *(u64u *) (data + n - 8);
+ r >>= (16 - n) * 8;
+ r[0] = *(u64u *) data;
+ return (u8x16) r;
+ }
+ else if (n > 3)
+ {
+ u32x4 r = {};
+ r[1] = *(u32u *) (data + n - 4);
+ r >>= (8 - n) * 8;
+ r[0] = *(u32u *) data;
+ return (u8x16) r;
+ }
+ else if (n > 1)
+ {
+ u16x8 r = {};
+ r[1] = *(u16u *) (data + n - 2);
+ r >>= (4 - n) * 8;
+ r[0] = *(u16u *) data;
+ return (u8x16) r;
+ }
+ else if (n > 0)
+ r[0] = *data;
+ return r;
+}
+
+static_always_inline void
+u8x16_store_partial (u8x16 r, u8 *data, uword n)
+{
+#if defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u8x16_mask_store (r, data, pow2_mask (n));
+#else
+ if (n > 7)
+ {
+ *(u64u *) (data + n - 8) = ((u64x2) r)[1] << ((16 - n) * 8);
+ *(u64u *) data = ((u64x2) r)[0];
+ }
+ else if (n > 3)
+ {
+ *(u32u *) (data + n - 4) = ((u32x4) r)[1] << ((8 - n) * 8);
+ *(u32u *) data = ((u32x4) r)[0];
+ }
+ else if (n > 1)
+ {
+ *(u16u *) (data + n - 2) = ((u16x8) r)[1] << ((4 - n) * 8);
+ *(u16u *) data = ((u16x8) r)[0];
+ }
+ else if (n > 0)
+ data[0] = r[0];
+#endif
+}
+
#endif /* included_vector_sse2_h */
/*