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[Bug rtl-optimization/55092] [4.8 Regression] LRA doesn't scale
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 26 Oct 2012 22:13:09 +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
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-26 22:13:09 UTC ---
It isn't LRA that doesn't scale, it is var-tracking memory clobbering that
needs improvements, but it would be nice to analyze what are the changes that
LRA does compared to reload that make var-tracking to take that much longer and
whether the generated code is better or worse. If it is better, this is just
PR54402 dup.