re PR middle-end/49736 (Revision 176228 miscompiled 255.vortex in SPEC CPU 2000)

gcc/
	PR middle-end/49736
	* expr.c (all_zeros_p): Undo bogus part of last change.

From-SVN: r176270

gcc/ChangeLog

+2011-07-14  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	PR middle-end/49736
+	* expr.c (all_zeros_p): Undo bogus part of last change.
+
 2011-07-14  Matthias Klose <doko@ubuntu.com>
 
 	* doc/extend.texi (optimize attribute): Fix typo.

gcc/expr.c

@@ -5157,7 +5157,7 @@ all_zeros_p (const_tree exp)
       bool complete_p;
 
       categorize_ctor_elements (exp, &nz_elts, &init_elts, &complete_p);
-      return nz_elts == init_elts;
+      return nz_elts == 0;
     }
 
   return initializer_zerop (exp);