+2008-02-12 Richard Guenther <rguenther@suse.de>
+
+ PR middle-end/35163
+ * fold-const.c (fold_widened_comparison): Use get_unwidened in
+ value-preserving mode. Disallow final truncation.
+
2008-02-12 Eric Botcazou <ebotcazou@adacore.com>
PR middle-end/35136
if (TYPE_PRECISION (TREE_TYPE (arg0)) <= TYPE_PRECISION (shorter_type))
return NULL_TREE;
- arg1_unw = get_unwidened (arg1, shorter_type);
+ arg1_unw = get_unwidened (arg1, NULL_TREE);
/* If possible, express the comparison in the shorter mode. */
if ((code == EQ_EXPR || code == NE_EXPR
|| TYPE_UNSIGNED (TREE_TYPE (arg0)) == TYPE_UNSIGNED (shorter_type))
&& (TREE_TYPE (arg1_unw) == shorter_type
+ || (TYPE_PRECISION (shorter_type)
+ >= TYPE_PRECISION (TREE_TYPE (arg1_unw)))
|| (TREE_CODE (arg1_unw) == INTEGER_CST
&& (TREE_CODE (shorter_type) == INTEGER_TYPE
|| TREE_CODE (shorter_type) == BOOLEAN_TYPE)
+2008-02-12 Richard Guenther <rguenther@suse.de>
+
+ PR middle-end/35163
+ * gcc.c-torture/execute/pr35163.c: New testcase.
+
2008-02-12 Uros Bizjak <ubizjak@gmail.com>
* gcc.target/i386/asm-3.c: Fix dg-skip-if for all 32bit PIC targets.