NEON implementation for Adler32

third_party/zlib/adler32.c

Index: third_party/zlib/adler32.c
diff --git a/third_party/zlib/adler32.c b/third_party/zlib/adler32.c
index a868f073d8a0e35dcb3ec812b41b1d3f0acdd84d..fd80051ffb60444996ef488c48a7db01891b1e32 100644
--- a/third_party/zlib/adler32.c
+++ b/third_party/zlib/adler32.c
@@ -6,6 +6,9 @@
 /* @(#) $Id$ */
 
 #include "zutil.h"
+#ifdef __ARM_NEON__
+#include "neon_adler32.h"
+#endif
 
 #define local static
 
@@ -67,6 +70,12 @@ uLong ZEXPORT adler32(adler, buf, len)
     const Bytef *buf;
     uInt len;
 {
+#ifdef __ARM_NEON__
+    if (len > 31) {
+      return NEON_adler32(adler, buf, len);
+    }
+#endif
+
     unsigned long sum2;
     unsigned n;