profile.c (compute_branch_probabilities): Prevent crash with EH in RTL-based profiling.

2004-11-15  Dale Johannesen  <dalej@apple.com>

        * profile.c (compute_branch_probabilities):  Prevent
        crash with EH in RTL-based profiling.

From-SVN: r90711

gcc/ChangeLog

+2004-11-15  Dale Johannesen  <dalej@apple.com>
+
+	* profile.c (compute_branch_probabilities):  Prevent
+	crash with EH in RTL-based profiling.
+
 2004-11-16  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-cfg.c (verify_expr): Replace TREE_OPERAND with

gcc/profile.c

@@ -569,10 +569,13 @@ compute_branch_probabilities (void)
 	    }
 	}
       /* Otherwise try to preserve the existing REG_BR_PROB probabilities
-         tree based profile guessing put into code.  */
+         tree based profile guessing put into code.  BB can be the
+	 ENTRY_BLOCK, and it can have multiple (fake) successors in
+	 EH cases, but it still has no code; don't crash in this case.  */
       else if (profile_status == PROFILE_ABSENT
 	       && !ir_type ()
 	       && EDGE_COUNT (bb->succs) > 1
+	       && BB_END (bb)
 	       && (note = find_reg_note (BB_END (bb), REG_BR_PROB, 0)))
 	{
 	  int prob = INTVAL (XEXP (note, 0));