diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 88b03be7135..2fe9f0dfdf5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2020-05-20  Martin Liska  <mliska@suse.cz>
+
+	* lto-compress.c (lto_compression_zstd): Fill up
+	num_compressed_il_bytes.
+	(lto_uncompression_zstd): Likewise for num_uncompressed_il_bytes here.
+
 2020-05-20  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/95219
diff --git a/gcc/lto-compress.c b/gcc/lto-compress.c
index 56cd9626b19..d19338b396a 100644
--- a/gcc/lto-compress.c
+++ b/gcc/lto-compress.c
@@ -141,6 +141,7 @@ lto_compression_zstd (struct lto_compression_stream *stream)
   if (ZSTD_isError (csize))
     internal_error ("compressed stream: %s", ZSTD_getErrorName (csize));
 
+  lto_stats.num_compressed_il_bytes += csize;
   stream->callback (outbuf, csize, NULL);
 
   lto_destroy_compression_stream (stream);
@@ -169,6 +170,7 @@ lto_uncompression_zstd (struct lto_compression_stream *stream)
   if (ZSTD_isError (dsize))
     internal_error ("decompressed stream: %s", ZSTD_getErrorName (dsize));
 
+  lto_stats.num_uncompressed_il_bytes += dsize;
   stream->callback (outbuf, dsize, stream->opaque);
 
   lto_destroy_compression_stream (stream);