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authorMarek Polacek <polacek@redhat.com>2014-11-12 14:36:41 +0000
committerMarek Polacek <mpolacek@gcc.gnu.org>2014-11-12 14:36:41 +0000
commit2f68e8bcc034e43b736b5d6789192f53fec88481 (patch)
tree360555bbd6800c3e583ecae19b0e459896958de5 /gcc/graphite-interchange.c
parentb8c03a9b391b02a6ace91b216e50926b49dbaae0 (diff)
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fold-const.c (fold_binary_loc): Don't fold if the result is undefined.
* fold-const.c (fold_binary_loc): Don't fold if the result is undefined. * match.pd (A + (-B) -> A - B, A - (-B) -> A + B, -(-A) -> A): Likewise. * c-c++-common/ubsan/overflow-sub-4.c: New test. * c-c++-common/ubsan/overflow-sub-2.c: Adjust dg-output. * c-c++-common/ubsan/overflow-int128.c: Likewise. From-SVN: r217427
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