| From c43ba7a55f091c0dcbfd8d89f7a5121269ce1b81 Mon Sep 17 00:00:00 2001 |
| From: Ho Cheung <uioptt24@gmail.com> |
| Date: Thu, 27 Jul 2023 09:47:52 +0800 |
| Subject: [PATCH] [zlib] Perform CPU feature detection for ARM inside adler32() |
| |
| Perform CPU feature detection for ARM within adler32() to have the same |
| behavior as x86. |
| |
| --- |
| third_party/zlib/adler32.c | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| diff --git a/third_party/zlib/adler32.c b/third_party/zlib/adler32.c |
| index 81c584f68e233..99a294496f7eb 100644 |
| --- a/third_party/zlib/adler32.c |
| +++ b/third_party/zlib/adler32.c |
| @@ -90,9 +90,9 @@ uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) { |
| return adler | (sum2 << 16); |
| } |
| |
| -#if defined(ADLER32_SIMD_SSSE3) |
| +#if defined(ADLER32_SIMD_SSSE3) || defined(ADLER32_SIMD_NEON) |
| /* |
| - * Use SSSE3 to compute the adler32. Since this routine can be |
| + * Use SIMD to compute the adler32. Since this function can be |
| * freely used, check CPU features here. zlib convention is to |
| * call adler32(0, NULL, 0), before making calls to adler32(). |
| * So this is a good early (and infrequent) place to cache CPU |
| -- |
| 2.41.0.windows.3 |
