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FP pipelines on Intel's Haswell core
Author: Agner Date: 2015-09-25 00:45
Jorcy de Oliveira Neto wrote:
I guess Intel has decided as well to move
the Integer SIMD Multiplier from Port 1, back to Port
0, to alleviate some of the SIMD stress on it, as it
(Port 1) still keeps the sole "pure"
FP-Add execution unit, even on a cost of agreggating a
higher complexity (and more Integer stress/workload)
back on Port 0.
They always put instructions with the same latency on the same port, even if that port is overused.
 
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