[Development] Cut 7+ms of Qt5 startup time on Linux

[Thiago Macieira]

On quinta-feira, 31 de outubro de 2013 07:38:00, Knoll Lars wrote:
> Before going to a binary format, I’d first like to check whether we can
> further speed up the parsing. I’ve done some work in that area in spring,
> but I know there was still quite some room to improve it.

I'm also improving the fromUtf8 code. My current benchmarks are showing an 
improvement of 2x in the new plain code and 12x with SIMD improvements, for 
mostly ASCII input.

One further step is to detect an UTF-8 locale and use our optimised code, 
instead of letting ICU do the encoding.
-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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