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[Bug optimization/14046] [tree-ssa regression] address calculation not moved out of innermost loop
- From: "rguenth at tat dot physik dot uni-tuebingen dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Feb 2004 14:49:19 -0000
- Subject: [Bug optimization/14046] [tree-ssa regression] address calculation not moved out of innermost loop
- References: <20040206124008.14046.rguenth@tat.physik.uni-tuebingen.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2004-02-06 14:49 -------
looking at the loop optimizer dump and comparing to 3.4, I see that for tree-ssa:
Loop at 71 ignored due to multiple entry points.
so the tree optimizers obfuscate the loop too much it seems (in fact, the
optimized tree dump looks very obfuscated - to me ;) ).
I remember a patch floating around to avoid the obfuscation, but don't remember
if it was applied. Jeff?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14046