As per your comment in the PR...
OK for branch?
* opts.c (finish_options): Error out when using -flto and
-fgnu-tm.
Index: opts.c
===================================================================
--- opts.c (revision 181028)
+++ opts.c (working copy)
@@ -784,6 +784,8 @@ finish_options (struct gcc_options *opts
#endif
if (!opts->x_flag_fat_lto_objects && !HAVE_LTO_PLUGIN)
error_at (loc, "-fno-fat-lto-objects are supported only with linker
plugin.");
+ if (opts->x_flag_tm)
+ error_at (loc, "LTO support is currently not supported with
transactional memory");
}
if ((opts->x_flag_lto_partition_balanced != 0) +
(opts->x_flag_lto_partition_1to1 != 0)
+ (opts->x_flag_lto_partition_none != 0) >= 1)
