Re: [boost] [GGL] [geometry] Inexplicable speed benefit when using Visual C++ 2010

Subject: Re: [boost] [GGL] [geometry] Inexplicable speed benefit when using Visual C++ 2010
From: Arash Partow (arash_at_[hidden])
Date: 2010-04-21 17:39:22

On 21/04/2010 11:23 AM, Stephan T. Lavavej wrote:
> Additionally, I find it interesting that you say that performance also massively increased between Intel v10 and Intel v11. That's when they implemented rvalue references too. Are you sure that you're not wrapping GPC (or anything else) in C++ code that would automatically benefit from rvalue references?

No rvalues, no library wrapping, just better loop-unrolling and an interesting reordering of some jump tables based on the input set used during PGO (differs from how they are when compiled with just O2), sometimes the simplest things seem to be the most effective.