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[Bug rtl-optimization/55092] [4.8 Regression] LRA doesn't scale
- From: "vmakarov at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 26 Oct 2012 22:57:38 +0000
- Subject: [Bug rtl-optimization/55092] [4.8 Regression] LRA doesn't scale
- Auto-submitted: auto-generated
- References: <bug-55092-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55092
--- Comment #4 from Vladimir Makarov <vmakarov at redhat dot com> 2012-10-26 22:57:38 UTC ---
(In reply to comment #2)
> LRA reuses stack memory much better than reload (in all modes but especially
> in -O0). May be that is the reason of the var-tracking problem.
I forgot to say that LRA understands -fno-ira-share-spill-slots. In this case,
each pseudo gets own stack slot.
I thing it is worth to try it.