[Webkit-unassigned] [Bug 196488] [CMake] Detect SSE2 at compile time

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196488

--- Comment #16 from Xan Lopez <xan.lopez at gmail.com> ---
(In reply to Konstantin Tokarev from comment #14)
> My point is that we should't require SSE2 because we don't have to use JIT.
> Or this check should be guarget by if(ENABLE_JIT AND WTF_CPU_X86), which may
> align better with our policy of failing eagerly instead of degrading
> features silently based on system detection

This is also relevant for LLInt, even if you use CLoop, because the compiler flags you use to build LLInt/CLoop matter. Compiling it without SSE2 will effectively introduce "bugs" related to floating point precision.

In any case computers that do not have SSE2 capabilities will almost certainly not be able to run a current WebKit, I'd say. We are talking about almost 20 years old hardware.

Feel free to re-open the thread in webkit-dev if you want though, I think it's better to have the conversation there.

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