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Subject: [Bug target/41993] [sh] ICE in create_pre_exit, at mode-switching.c:399
Date: Sun, 11 Nov 2012 22:45:00 -0000
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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--