X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Fmem.c;h=88fe09b1794aa6744e89be1444bbfaaaf8fa4ea8;hb=1e93f5060f6f6f7a8729022d0120004902b4f64b;hp=6149755a6b88eef2b071a208088594ba04fde68d;hpb=ce47f1589e9f5a6cf8372a269bdd862ff0cc3f91;p=ffmpeg

diff --git a/libavutil/mem.c b/libavutil/mem.c
index 6149755a6b8..88fe09b1794 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -399,6 +399,18 @@ static void fill32(uint8_t *dst, int len)
 {
     uint32_t v = AV_RN32(dst - 4);
 
+#if HAVE_FAST_64BIT
+    uint64_t v2= v + ((uint64_t)v<<32);
+    while (len >= 32) {
+        AV_WN64(dst   , v2);
+        AV_WN64(dst+ 8, v2);
+        AV_WN64(dst+16, v2);
+        AV_WN64(dst+24, v2);
+        dst += 32;
+        len -= 32;
+    }
+#endif
+
     while (len >= 4) {
         AV_WN32(dst, v);
         dst += 4;