1From c43ba7a55f091c0dcbfd8d89f7a5121269ce1b81 Mon Sep 17 00:00:00 2001 2From: Ho Cheung <[email protected]> 3Date: Thu, 27 Jul 2023 09:47:52 +0800 4Subject: [PATCH] [zlib] Perform CPU feature detection for ARM inside adler32() 5 6Perform CPU feature detection for ARM within adler32() to have the same 7behavior as x86. 8 9--- 10 third_party/zlib/adler32.c | 4 ++-- 11 1 file changed, 2 insertions(+), 2 deletions(-) 12 13diff --git a/third_party/zlib/adler32.c b/third_party/zlib/adler32.c 14index 81c584f68e233..99a294496f7eb 100644 15--- a/third_party/zlib/adler32.c 16+++ b/third_party/zlib/adler32.c 17@@ -90,9 +90,9 @@ uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) { 18 return adler | (sum2 << 16); 19 } 20 21-#if defined(ADLER32_SIMD_SSSE3) 22+#if defined(ADLER32_SIMD_SSSE3) || defined(ADLER32_SIMD_NEON) 23 /* 24- * Use SSSE3 to compute the adler32. Since this routine can be 25+ * Use SIMD to compute the adler32. Since this function can be 26 * freely used, check CPU features here. zlib convention is to 27 * call adler32(0, NULL, 0), before making calls to adler32(). 28 * So this is a good early (and infrequent) place to cache CPU 29-- 302.41.0.windows.3 31