cl-compiler-macroexpand

cl-compiler-macroexpand is an autoloaded compiled Lisp function in `cl-macs.el'.

(cl-compiler-macroexpand FORM)

Like `macroexpand', but for compiler macros.
Expands FORM repeatedly until no further expansion is possible.
Returns FORM unchanged if it has no compiler macro, or if it has a
macro that returns its `&whole' argument.