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[Bug tree-optimization/47621] [4.6 Regression] Missed dependencies in address-taken optimization
- 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: Sun, 6 Feb 2011 23:09:01 +0000
- Subject: [Bug tree-optimization/47621] [4.6 Regression] Missed dependencies in address-taken optimization
- Auto-submitted: auto-generated
- References: <bug-47621-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47621
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-06 23:08:39 UTC ---
Note to self: Before the patch the code in the else branch never triggered.
The original idea was to preserve MEM[&a] re-writing into SSA form, which
didn't happen before the patch. Re-writing the testcase in this PR would
also be nice, but I see other problems with this code (bit-field component-refs
come to my mind).
I have a patch.