vppinfra: add *_zero() vector inlines

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

diff --git a/src/vppinfra/vector.h b/src/vppinfra/vector.h
index 906d8d8..33e2b6a 100644 (file)
--- a/src/vppinfra/vector.h
+++ b/src/vppinfra/vector.h
@@ -66,7 +66,7 @@
 #endif
 #endif
 
-#if defined (__AVX512F__)
+#if defined (__AVX512BITALG__)
 #define CLIB_HAVE_VEC512
 #endif
 
@@ -155,6 +155,15 @@ typedef u32 u32x _vector_size (8);
 typedef u64 u64x _vector_size (8);
 #endif
 
+/* universal inlines */
+#define _(t, s, c) \
+static_always_inline t##s##x##c                                         \
+t##s##x##c##_zero ()                                                    \
+{ return (t##s##x##c) {}; }                                             \
+
+foreach_vec
+#undef _
+
 #undef _vector_size
 
 #define VECTOR_WORD_TYPE(t) t##x
@@ -168,7 +177,10 @@ typedef u64 u64x _vector_size (8);
 #include <vppinfra/vector_avx2.h>
 #endif
 
-#if defined (__AVX512F__)
+#if defined (__AVX512BITALG__)
+/* Due to power level transition issues, we don't preffer AVX-512 on
+   Skylake X and CascadeLake CPUs, AVX512BITALG is introduced on
+   icelake CPUs  */
 #include <vppinfra/vector_avx512.h>
 #endif