optabs.c (expand_vec_cond_expr): Always get sign from type.

gcc/

	* optabs.c (expand_vec_cond_expr): Always get sign from type.
	* tree.c (wide_int_to_tree): Support negative values for boolean.
	(build_nonstandard_boolean_type): Use signed type for booleans.

From-SVN: r230022

gcc/ChangeLog

+2015-11-09  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	* optabs.c (expand_vec_cond_expr): Always get sign from type.
+	* tree.c (wide_int_to_tree): Support negative values for boolean.
+	(build_nonstandard_boolean_type): Use signed type for booleans.
+
 2015-11-09  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/68248

gcc/optabs.c

@@ -5365,7 +5365,6 @@ expand_vec_cond_expr (tree vec_cond_type, tree op0, tree op1, tree op2,
       op0a = TREE_OPERAND (op0, 0);
       op0b = TREE_OPERAND (op0, 1);
       tcode = TREE_CODE (op0);
-      unsignedp = TYPE_UNSIGNED (TREE_TYPE (op0a));
     }
   else
     {
@@ -5374,9 +5373,9 @@ expand_vec_cond_expr (tree vec_cond_type, tree op0, tree op1, tree op2,
       op0a = op0;
       op0b = build_zero_cst (TREE_TYPE (op0));
       tcode = LT_EXPR;
-      unsignedp = false;
     }
   cmp_op_mode = TYPE_MODE (TREE_TYPE (op0a));
+  unsignedp = TYPE_UNSIGNED (TREE_TYPE (op0a));
 
 
   gcc_assert (GET_MODE_SIZE (mode) == GET_MODE_SIZE (cmp_op_mode)

gcc/tree.c

@@ -1439,7 +1439,7 @@ wide_int_to_tree (tree type, const wide_int_ref &pcst)
 	case BOOLEAN_TYPE:
 	  /* Cache false or true.  */
 	  limit = 2;
-	  if (hwi < 2)
+	  if (IN_RANGE (hwi, 0, 1))
 	    ix = hwi;
 	  break;
 
@@ -8072,7 +8072,7 @@ build_nonstandard_boolean_type (unsigned HOST_WIDE_INT precision)
 
   type = make_node (BOOLEAN_TYPE);
   TYPE_PRECISION (type) = precision;
-  fixup_unsigned_type (type);
+  fixup_signed_type (type);
 
   if (precision <= MAX_INT_CACHED_PREC)
     nonstandard_boolean_type_cache[precision] = type;