gimple-low.c (block_may_fallthru): Correct handling of SWITCH_EXPR--may fall…

gimple-low.c (block_may_fallthru): Correct handling of SWITCH_EXPR--may fall through if SWITCH_LABELS is NULL.

2005-01-25  Ian Lance Taylor  <ian@airs.com>

	* gimple-low.c (block_may_fallthru): Correct handling of
	SWITCH_EXPR--may fall through if SWITCH_LABELS is NULL.

From-SVN: r94250

gcc/ChangeLog

+2005-01-25  Ian Lance Taylor  <ian@airs.com>
+
+	* gimple-low.c (block_may_fallthru): Correct handling of
+	SWITCH_EXPR--may fall through if SWITCH_LABELS is NULL.
+
 2005-01-26  Hans-Peter Nilsson  <hp@axis.com>
 
 	* config/cris/cris.h (CPP_SPEC): Adjust the various mtune=

gcc/gimple-low.c

@@ -287,7 +287,7 @@ block_may_fallthru (tree block)
 	 branch to a selected label and hence can not fall through.
 	 Otherwise SWITCH_BODY is set, and the switch can fall
 	 through.  */
-      return SWITCH_LABELS (stmt) != NULL_TREE;
+      return SWITCH_LABELS (stmt) == NULL_TREE;
 
     case COND_EXPR:
       if (block_may_fallthru (COND_EXPR_THEN (stmt)))