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re PR middle-end/45262 (Optimization results in wrong result on expression x>>31...
authorJakub Jelinek <jakub@redhat.com>
Thu, 12 Aug 2010 15:28:40 +0000 (17:28 +0200)
committerJakub Jelinek <jakub@gcc.gnu.org>
Thu, 12 Aug 2010 15:28:40 +0000 (17:28 +0200)
commit68bd7fdeace07bd6c46cef43884eefbd3e6751da
tree0928236e6788f61051e7fd35739db3f3f8fa2e04tree
parenta89026a1681856e4386e0152d37234c0e119a27acommit | diff
re PR middle-end/45262 (Optimization results in wrong result on expression x>>31||(-x)>>31)

PR middle-end/45262
* fold-const.c (make_range) <case NEGATE_EXPR>: Punt if
-a overflows.  Normalize the range.

* gcc.c-torture/execute/pr45262.c: New test.

From-SVN: r163195
gcc/ChangeLog diff | blob | blame | history
gcc/fold-const.c diff | blob | blame | history
gcc/testsuite/ChangeLog diff | blob | blame | history
gcc/testsuite/gcc.c-torture/execute/pr45262.c [new file with mode: 0644] blob
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