FMA Support in hotspot

[Ashkrit Sharma]

I was looking @ https://channel9.msdn.com/Events/Build/2014/4-587 presentation , it talks about interesting stuff on modern CPU.

One of the thing highlighted is support for FMA instruction set on intel haswell .

Does hotspot has optimization to use this new intrinsic ?

[Aleksey Shipilev]

There is no explicit intrinsic I am aware of. Also, I see no hits for "vfma" and "fma" in Hotspot code generators for x86. Therefore, one could tentatively claim the support is not there yet.

-Aleksey.

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