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[Bug tree-optimization/20580] Using ASSERT_EXPR to improve constant propagation of conditional constants
- From: "kazu at cs dot umass dot edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Mar 2005 20:50:13 -0000
- Subject: [Bug tree-optimization/20580] Using ASSERT_EXPR to improve constant propagation of conditional constants
- References: <20050321183947.20580.steven@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From kazu at cs dot umass dot edu 2005-03-22 20:50 -------
We probably need something like substitute_and_fold for VRP as well.
Otherwise, we can't fold a + b into 0.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20580