[Development] Updating x86 SIMD support in Qt

[Lorn Potter]

On 19/1/2022 1:01 PM, Thiago Macieira wrote:
> I've also found that macOS universal builds, WASM, Android and maybe some more
> are improperly detecting support. Specifically for universal builds, what we
> detect depends on the order in which you specify the architectures. This is
> buggy at a minimum, surprising at best.

wasm is a special case, as we turn it off by default, regardless of 
detection. We cannot allow detection by default (specified by some 
configure argument which is currently -sse2) because browsers do not 
support it by default, and there is no way to just not use it once it is 
compiled in.


-- 
Lorn Potter
Freelance Qt Developer. Platform Maintainer Qt WebAssembly, Maintainer 
QtSensors
Author, Hands-on Mobile and Embedded Development with Qt 5