Track buffer end instead of buffer length, for a small perf improvement.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/upb_decoder.h b/src/upb_decoder.h
index 9cebe0c..5662c9c 100644
--- a/src/upb_decoder.h
+++ b/src/upb_decoder.h
@@ -62,12 +62,12 @@ struct _upb_decoder {
   // Our current position in the data buffer.
   const char *ptr;
 
+  // End of this buffer, relative to *ptr.
+  const char *end;
+
   // End of this submessage, relative to *ptr.
   const char *submsg_end;
 
-  // Number of bytes available at ptr.
-  size_t len;
-
   // Msgdef for the current level.
   upb_msgdef *msgdef;
 };