Inline memove for small constant sizes and refactor memcpy and memset.

crosstest/mem_intrin.h

Index: crosstest/mem_intrin.h
diff --git a/crosstest/mem_intrin.h b/crosstest/mem_intrin.h
index 70f02ae7394da5292736e3fc44daf410239d5185..c5cbacfb493df460d1004a8d6ad61b483f3bc9ba 100644
--- a/crosstest/mem_intrin.h
+++ b/crosstest/mem_intrin.h
@@ -5,10 +5,15 @@
  * under different namespaces.
  */
 
+#include "mem_intrin.def"
+
 int memcpy_test(uint8_t *buf, uint8_t *buf2, uint8_t init, size_t length);
 int memmove_test(uint8_t *buf, uint8_t *buf2, uint8_t init, size_t length);
 int memset_test(uint8_t *buf, uint8_t *buf2, uint8_t init, size_t length);
 
-int memcpy_test_fixed_len(uint8_t init);
-int memmove_test_fixed_len(uint8_t init);
-int memset_test_fixed_len(uint8_t init);
+#define X(NBYTES)                                                              \
+  int memcpy_test_fixed_len_##NBYTES(uint8_t init);                            \
+  int memmove_test_fixed_len_##NBYTES(uint8_t init);                           \
+  int memset_test_fixed_len_##NBYTES(uint8_t init);
+VALUES
+#undef X