The compression loops' remaining-pass count: the word after the saved
registers, inside the same cache-line-rounded work area. The loops address
each pass's schedule through RBP, which the compression saves and restores
with the other callee-saved registers: RCX and R8 belong to callers'
prepare/finish code (telemetry sealing keeps a count in RCX), and every
other register is a round temporary.
220def digestLoopCounter =
221 (digestSaved digestSavedRegisters)The compiler supplied declaration spans and resolved links from this source snapshot. This page does not assert that this file belongs to a checked closure.