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[Bug target/52034] __builtin_copysign optimization suboptimal
- 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: Mon, 30 Jan 2012 09:35:37 +0000
- Subject: [Bug target/52034] __builtin_copysign optimization suboptimal
- Auto-submitted: auto-generated
- References: <bug-52034-4@http.gcc.gnu.org/bugzilla/>
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.