[Bug tree-optimization/47555] [4.4 Regression] Huge memory usage when optimizing

rguenther at suse dot de gcc-bugzilla@gcc.gnu.org
Tue Feb 1 14:48:00 GMT 2011


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47555

--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> 2011-02-01 14:48:15 UTC ---
On Tue, 1 Feb 2011, tony.poppleton at gmail dot com wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47555
> 
> --- Comment #6 from Tony Poppleton <tony.poppleton at gmail dot com> 2011-02-01 14:45:28 UTC ---
> Out of interest, could this parameter of 20 be automatically tuned based on the
> available RAM?
> 
> For systems with a lot of RAM, it might make sense to increase the parameter
> above 20 (assuming this produces better code in the end).
> 
> Whilst they could override this using the flag mentioned in comment #3,
> auto-detecting this parameter would make it easier for the end user.

We try very hard to not have generated code depend on host machine
configuration.  So, no.



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