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[Bug tree-optimization/48571] [4.5/4.6/4.7 Regression] Missed data-dependence for (bogus?) reconstructed array-refs
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 12 Apr 2011 13:12:06 +0000
- Subject: [Bug tree-optimization/48571] [4.5/4.6/4.7 Regression] Missed data-dependence for (bogus?) reconstructed array-refs
- Auto-submitted: auto-generated
- References: <bug-48571-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48571
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-12 13:11:56 UTC ---
Re-constructing array-refs (and thus an index space) is invalid. Which means
the C frontend should better change its behavior and not lower all array
accesses to pointer arithmetic and dereferences.