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[Bug tree-optimization/50204] [4.5/4.6/4.7 Regression] Missed fully redundant load found in crafty (SPEC 2k)
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 29 Aug 2011 03:00:48 +0000
- Subject: [Bug tree-optimization/50204] [4.5/4.6/4.7 Regression] Missed fully redundant load found in crafty (SPEC 2k)
- Auto-submitted: auto-generated
- References: <bug-50204-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50204
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-08-29 03:00:48 UTC ---
Created attachment 25124
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25124
Patch which was tested on x86_64 without any regressions
Note I am going to add this patch here as the copyright assignment for Cavium
is not completed yet (though it is in the process of clearing up). This
implements what is mentioned in comment #1 and was tested on x86_64-linux-gnu
with no regressions. I don't know what the compile time slow down that happens
yet and have not added any testcases but it works on the testcase attached to
the bug. I also have not checked what the performance increase on SPEC would
be.