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[Bug tree-optimization/30930] [4.3 Regression] vector can cause to create an extra variable, DECL_GIMPLE_REG_P not recomputed
- 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: 13 Jan 2008 17:57:28 -0000
- Subject: [Bug tree-optimization/30930] [4.3 Regression] vector can cause to create an extra variable, DECL_GIMPLE_REG_P not recomputed
- References: <bug-30930-6528@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 2008-01-13 17:57 -------
(In reply to comment #3)
> It indeed works on the 4.2 branch where the loads magically disappear with the
> first may_alias pass. Possibly because it doesn't pay attention to whether
> DECL_GIMPLE_REG is set or not.
Well DECL_GIMPLE_REG was not needed for vector types before 4.3.0 :) so yes it
was ignored.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30930