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References: <bug-38825-12873@http.gcc.gnu.org/bugzilla/>
Subject: [Bug target/38825] missed optimization: register renaming in unrolled loop
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------- Comment #1 from rguenth at gcc dot gnu dot org  2009-01-13 15:08 -------
Try -frename-registers.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38825