+2006-06-16 Richard Guenther <rguenther@suse.de>
+
+ PR middle-end/27116
+ * fold-const.c (negate_expr_p): Do not introduce undefined
+ overflow in negating INTEGER_CSTs.
+ (fold_negate_expr): Rename from negate_expr. Revert last
+ change for folding BIT_NOT_EXPR. Change semantics to
+ return NULL_TREE for non-simplified negations. Do not
+ strip type conversions and unify type handling.
+ (negate_expr): New function, wrap around fold_negate_expr
+ but ensure building a tree always. Strip type conversions
+ here, fold to result type.
+ (fold_unary): Use fold_negate_expr for folding NEGATE_EXPR.
+
2006-06-16 Roger Sayle <roger@eyesopen.com>
PR middle-end/27802