From 13e1ca9eb520d7a5ca1092d2bf8566669d8b5580 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 22 Nov 2022 12:19:28 -0700
Subject: [PATCH] [cff] Micro-optimize memcpy

---
 src/hb-cff-interp-common.hh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/hb-cff-interp-common.hh b/src/hb-cff-interp-common.hh
index 6ebf5aa2a..2c890f7f7 100644
--- a/src/hb-cff-interp-common.hh
+++ b/src/hb-cff-interp-common.hh
@@ -499,9 +499,11 @@ struct op_serializer_t
   {
     TRACE_SERIALIZE (this);
 
-    HBUINT8 *d = c->allocate_size<HBUINT8> (opstr.length);
+    unsigned char *d = c->allocate_size<unsigned char> (opstr.length);
     if (unlikely (!d)) return_trace (false);
-    memcpy (d, opstr.ptr, opstr.length);
+    /* Faster than memcpy for small strings. */
+    for (unsigned i = 0; i < opstr.length; i++)
+      d[i] = opstr.ptr[i];
     return_trace (true);
   }
 };