re PR tree-optimization/60849 (bogus comparison result type)

2014-04-17  Richard Biener  <rguenther@suse.de>

	PR middle-end/60849
	* tree-ssa-propagate.c (valid_gimple_rhs_p): Allow vector
	comparison results and add clarifying comment.

From-SVN: r209486

gcc/ChangeLog

+2014-04-17  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/60849
+	* tree-ssa-propagate.c (valid_gimple_rhs_p): Allow vector
+	comparison results and add clarifying comment.
+
 2014-04-17  Jakub Jelinek  <jakub@redhat.com>
 
 	* genmodes.c (struct mode_data): Add need_bytesize_adj field.

gcc/tree-ssa-propagate.c

@@ -572,9 +572,13 @@ valid_gimple_rhs_p (tree expr)
       break;
 
     case tcc_comparison:
-      if (!INTEGRAL_TYPE_P (TREE_TYPE (expr))
-	  || (TREE_CODE (TREE_TYPE (expr)) != BOOLEAN_TYPE
-	      && TYPE_PRECISION (TREE_TYPE (expr)) != 1))
+      /* GENERIC allows comparisons with non-boolean types, reject
+         those for GIMPLE.  Let vector-typed comparisons pass - rules
+	 for GENERIC and GIMPLE are the same here.  */
+      if (!(INTEGRAL_TYPE_P (TREE_TYPE (expr))
+	    && (TREE_CODE (TREE_TYPE (expr)) == BOOLEAN_TYPE
+		|| TYPE_PRECISION (TREE_TYPE (expr)) == 1))
+	  && ! VECTOR_TYPE_P (TREE_TYPE (expr)))
 	return false;
 
       /* Fallthru.  */