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authorRichard Guenther <rguenther@suse.de>2006-06-16 14:56:34 +0000
committerRichard Biener <rguenth@gcc.gnu.org>2006-06-16 14:56:34 +0000
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re PR middle-end/27116 (Incorrect integer division (wrong sign).)
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. * gcc.dg/pr15785-1.c: Revert last change. * gcc.dg/torture/pr27116-2.c: New testcase. From-SVN: r114723
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