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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 15:21:34 +0000 (17:21 +0200)
committerJakub Jelinek <jakub@gcc.gnu.org>
Thu, 12 Aug 2010 15:21:34 +0000 (17:21 +0200)
commita8c56818780786dd56e9656ddfa9806da4387e9c
tree639f56221290e502c4e4cfc6c62da003331396f5tree
parentd2be8071543ab02afcf36637d0f02da2d51e3f41commit | 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: r163193
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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