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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/52034] __builtin_copysign optimization suboptimal
Date: Mon, 30 Jan 2012 09:43:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52034

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-30 09:35:37 UTC ---
It's an RA issue I think - the RA isn't very clever when it comes to
coalescing pseudos with incoming or outgoing fixed regs.