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[Bug tree-optimization/18694] [4.0 regression] loop miscompilation at -O1 (-ftree-ch)
- 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: 4 Dec 2004 17:43:39 -0000
- Subject: [Bug tree-optimization/18694] [4.0 regression] loop miscompilation at -O1 (-ftree-ch)
- References: <20041127224610.18694.falk@debian.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-04 17:43 -------
DOM is defintely messing it up
before
if (d_2 > tmp_14) goto <L1>; else goto <L3>;
after:
if (t_6 < d_8) goto <L1>; else goto <L3>;
the comparision changed
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18694