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[Bug rtl-optimization/50567] Reload pass generates sub-optimal spill code for registers in presence of a vec_concat insn
- 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: Thu, 29 Sep 2011 15:11:55 +0000
- Subject: [Bug rtl-optimization/50567] Reload pass generates sub-optimal spill code for registers in presence of a vec_concat insn
- Auto-submitted: auto-generated
- References: <bug-50567-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50567
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-29 15:11:55 UTC ---
I think this is because we prefer to do GR-sse register moves throuhg memory.
-mtune=core2 should avoid this I think.