cl--loop-build-ands is a compiled Lisp function in `cl-macs.el'.

(cl--loop-build-ands CLAUSES)

Return various representations of (and . CLAUSES).
CLAUSES is a list of Elisp expressions, where clauses of the form
(progn E1 E2 E3 .. t) are the focus of particular optimizations.
The return value has shape (COND BODY COMBO)
such that COMBO is equivalent to (and . CLAUSES).