Hello!
Attached patch removes extra blockage insn generation. For the
software archaeology, please see the PR [1], where it was determined,
that the removed part is probably a dataflow branch to trunk merge
oversight.
2018-11-21 Uros Bizjak <ubiz...@gmail.com>
PR middle-end/88129
* function.c (expand_function_end): Do not emit extra blockage insn.
Patch was bootstrapped and regression tested on x86_64-linux-gnu
{,-m32} for all default languages, obj-c++ and go.
OK for mainline?
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88129
Uros.
diff --git a/gcc/function.c b/gcc/function.c
index 302438323c87..44ad57840440 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5296,14 +5296,6 @@ expand_function_end (void)
if (flag_exceptions)
sjlj_emit_function_exit_after (get_last_insn ());
}
- else
- {
- /* We want to ensure that instructions that may trap are not
- moved into the epilogue by scheduling, because we don't
- always emit unwind information for the epilogue. */
- if (cfun->can_throw_non_call_exceptions)
- emit_insn (gen_blockage ());
- }
/* If this is an implementation of throw, do what's necessary to
communicate between __builtin_eh_return and the epilogue. */
