GLibC

  1. Bug #2030515
  2. Comment #12

Comment 12 for bug 2030515

Revision history for this message
In , Bruce Merry (bmerry-q) wrote :

FWIW, backwards REP MOVSB (std; rep movsb; cld) is still horribly slow on Zen 4 (4 GB/s even when the data is nicely aligned and cached).