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PR middle-end/30322
authorsayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Sun, 31 Dec 2006 16:17:49 +0000 (16:17 +0000)
committersayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Sun, 31 Dec 2006 16:17:49 +0000 (16:17 +0000)
commit0673139b81a4c619e2c93ceebe04b1885986a1a0
treeb1cf895f653525f285670f935e58e7beff2a7eeftree | snapshot
parent4be86438b8ea45274f355143d1195247728bc3e3commit | diff
PR middle-end/30322
* fold-const.c (fold_binary): Fold X + ~X and ~X + X into -1 when
we don't care about trapping overflow.  Only convert -A - 1 into ~A
when we don't care about trapping overflow.

* gcc.dg/fold-plusnot-1.c: New test case.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120300 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog diff | blob | history
gcc/fold-const.c diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/fold-plusnot-1.c [new file with mode: 0644] blob
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