It seems we bumped LTO_major_version last time 2 years ago.

Right now, the following is seen when one links a GCC 10.2.x LTO object file:
$ gcc a.o

lto1: fatal error: bytecode stream in file 'a.o' generated with LTO version 9.2 instead of the expected 9.0

I suggest bumping LTO_major_version for releases/gcc-11 branch.
Can we please align it with a GCC release (version 11)? For the future, if e.g. GCC 12 consumes LTO
bytecode from GCC 11, we can leave LTO_major_version. Once e.g. GCC 13 needs bumping,
I would then change it to 13.

gcc/ChangeLog:

	* lto-streamer.h (LTO_major_version): Bump to 11.

diff --git a/gcc/lto-streamer.h b/gcc/lto-streamer.h
index 5c7cd84d46fd8e33a3d188f9d0d76b4e92d6207a..7a7be80dab8bd97f1579f8f358bc06afbc3277d0 100644 (file)
--- a/gcc/lto-streamer.h
+++ b/gcc/lto-streamer.h
@@ -120,7 +120,7 @@ along with GCC; see the file COPYING3.  If not see
      String are represented in the table as pairs, a length in ULEB128
      form followed by the data for the string.  */
 
-#define LTO_major_version 9
+#define LTO_major_version 11
 #define LTO_minor_version 0
 
 typedef unsigned char  lto_decl_flags_t;