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* fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & Y) ^ Y as
authorsayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 28 Mar 2006 17:55:26 +0000 (17:55 +0000)
committersayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 28 Mar 2006 17:55:26 +0000 (17:55 +0000)
commita3cf48f511c7b0bf01e998d32724915186fd9fc5
tree1b476f274da069b822455449eb6034e17e14926ctree | snapshot
parentb2814640b77ff0aa10d5060e03dffd141891e70fcommit | diff
* fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & Y) ^ Y as
the equivalent ~X & Y, and the symmetry related transformations.
(fold_binary) <BIT_AND_EXPR>: Similarly, fold (X ^ Y) & Y as
~X & Y, and symmetry related transforms.

* gcc.dg/fold-andxor-1.c: New test case.
* gcc.dg/fold-xorand-1.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112459 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-andxor-1.c [new file with mode: 0644] blob
gcc/testsuite/gcc.dg/fold-xorand-1.c [new file with mode: 0644] blob
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