regrename.c (copyprop_hardreg_forward): Do not keep register value data live…

regrename.c (copyprop_hardreg_forward): Do not keep register value data live across abnormal call or eh egdes.

* regrename.c (copyprop_hardreg_forward): Do not keep register
value data live across abnormal call or eh egdes.

From-SVN: r48043

gcc/ChangeLog

+2001-12-15  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* regrename.c (copyprop_hardreg_forward): Do not keep register
+	value data live across abnormal call or eh egdes.
+
 Sat Dec 15 08:29:45 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* expr.c (highest_pow2_factor, case INTEGER_CST): Return

gcc/regrename.c

@@ -1626,6 +1626,7 @@ copyprop_hardreg_forward ()
       /* ??? Ought to use more intelligent queueing of blocks.  */
       if (bb->pred
 	  && ! bb->pred->pred_next 
+	  && ! (bb->pred->flags & (EDGE_ABNORMAL_CALL | EDGE_EH))
 	  && bb->pred->src->index != ENTRY_BLOCK
 	  && bb->pred->src->index < b)
 	all_vd[b] = all_vd[bb->pred->src->index];