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[Bug tree-optimization/33404] Predictive commoning + ivopts possibly introducing extra sign extensions.
- From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jul 2008 07:56:06 -0000
- Subject: [Bug tree-optimization/33404] Predictive commoning + ivopts possibly introducing extra sign extensions.
- References: <bug-33404-14766@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from rakdver at gcc dot gnu dot org 2008-07-25 07:56 -------
(In reply to comment #3)
> (In reply to comment #2)
> > Also IV-opts is messing up anyways, it should have done out+1 as the base
> > instead of out, blah.
>
> Filed as http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36905 .
Can we close this bug, then, or is there some other problem reported in this
testcase? As far as I can tell, predictive commoning does not introduce any
new sign extensions (it does not eliminate any, either, but that is not its
job).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33404