Index: gcc-4.3.4/gcc/regrename.c
===================================================================
--- gcc-4.3.4.orig/gcc/regrename.c	2009-02-04 22:42:04.000000000 +0100
+++ gcc-4.3.4/gcc/regrename.c	2009-08-07 14:57:58.021444122 +0200
@@ -789,6 +789,10 @@ build_def_use (basic_block bb)
 	          || (predicated && recog_data.operand_type[i] == OP_OUT))
 		recog_data.operand_type[i] = OP_INOUT;
 	    }
+	  /* Unshare dup_loc RTL */
+	  for (i = 0; i < recog_data.n_dups; i++)
+	    *recog_data.dup_loc[i] = copy_rtx(*recog_data.dup_loc[i]);
+
 
 	  /* Step 1: Close chains for which we have overlapping reads.  */
 	  for (i = 0; i < n_ops; i++)