re PR target/41993 ([sh] ICE in create_pre_exit, at mode-switching.c:399)

	PR target/41993
	* mode-switching.c (create_pre_exit): Set return_copy to
	last_insn when copy_start is a pseudo reg.


Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>

From-SVN: r193210

gcc/ChangeLog

+2012-11-06  Uros Bizjak  <ubizjak@gmail.com>
+	    Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	PR target/41993
+	* mode-switching.c (create_pre_exit): Set return_copy to
+	last_insn when copy_start is a pseudo reg.
+
 2012-11-06  Andrey Turetskiy  <andrey.turetskiy@gmail.com>
 
 	* config/i386/i386.c (bdesc_args): Rename CODE_FOR_avx2_umulhrswv16hi3 to

gcc/mode-switching.c

@@ -324,7 +324,10 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes)
 		    else
 		      break;
 		    if (copy_start >= FIRST_PSEUDO_REGISTER)
-		      break;
+		      {
+			last_insn = return_copy;
+			continue;
+		      }
 		    copy_num
 		      = hard_regno_nregs[copy_start][GET_MODE (copy_reg)];