[Bug driver/56244] -O3 should imply -funroll-loops

Fri Feb 8 08:37:00 GMT 2013

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56244

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

           What    |Removed                     |Added
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                 CC|                            |Joost.VandeVondele at mat
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--- Comment #3 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2013-02-08 08:36:44 UTC ---
(In reply to comment #2)
> As noted elsewhere the RTL unroller is too agressive to be enabled by default.
> Only the -funroll-loops/ -fpeel-loops effect of the tree level unroller should
> be enabled by default.

Or should one instead consider having parameters for the RTL unroller to tune
it if needed ?  

Are there currently command line options that allow for just enabling this on
the tree level, that would allow for some testing ?