[Webkit-unassigned] [Bug 184909] Disable usage of fused multiply-add instructions for JSC with compiler flag

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=184909

--- Comment #3 from Filip Pizlo <fpizlo at apple.com> ---
Fused multiply-add gives a precision boost that results in double math returning a result that does not match bit-for-bit what you would have gotten without the fusion. Based on this, I think it might be a good idea to disable it for all of JSC. 

I would definitely want to disable it if it’s free to disable it.

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