http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41993
--- Comment #11 from Uros Bizjak <ubizjak at gmail dot com> 2012-11-11 22:45:18
UTC ---
(In reply to comment #10)
> Fixed on trunk.
Actually, implementing post-reload pass it looks to me, that in this place we
are only interested in function return hard registers. In pre-reload
mode-switching pass, there is no possibility for others, and in post-reload
pass, we got bitten by the same issue as in comment #4 (again with -O0), but
with hard registers.
Kaz, can you please test following patch, if it works ok SH4?
--cut here--
Index: mode-switching.c
===================================================================
--- mode-switching.c (revision 193407)
+++ mode-switching.c (working copy)
@@ -330,7 +330,7 @@
short_block = 1;
break;
}
- if (copy_start >= FIRST_PSEUDO_REGISTER)
+ if (!targetm.calls.function_value_regno_p (copy_start))
{
last_insn = return_copy;
continue;
--cut here--
