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GHui
Beginner
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How could I understand FP_ASSIST.ANY

 

How could I understand FP_ASSIST.ANY? 

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Thomas_G_4
New Contributor II
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You could understand it by reading the Intel® 64 and IA-32 Architectures Optimization Reference Manual

Short explanation for assists: when certain floating-point operations cannot be handled natively by the execution pipeline, and must be performed by microcode
At another page: SIMD FP assists deal[ing] with denormal inputs and underflow outputs.

To determine the costs of assists, you can use the performance events, see section 'B.4.5.2 Assists' (Version June 2016)