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[Bug target/47949] Missed optimization for -Os using xchg instead of mov.
- 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: Wed, 2 Mar 2011 10:53:33 +0000
- Subject: [Bug target/47949] Missed optimization for -Os using xchg instead of mov.
- Auto-submitted: auto-generated
- References: <bug-47949-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47949
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-02 10:53:28 UTC ---
I'm afraid it will upset Linux kernel people and others who are using -Os for
performance reasons to decrease its cache footprint, but if their code slows
down too much, they won't be happy.