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[Bug tree-optimization/15458] Combine ~ and ^.
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Nov 2005 17:32:35 -0000
- Subject: [Bug tree-optimization/15458] Combine ~ and ^.
- References: <bug-15458-5009@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from pinskia at gcc dot gnu dot org 2005-11-30 17:32 -------
Actually it is better for ~(a ^ CST) to come out as a ^ ~CST.
Right now we actually already implement ~(a^CST) as a ^ ~CST. So we need just
to implement (~a) ^ CST as a ^ ~CST. In fact this is what simplify_rtx does.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15458