Byte-compile constants in a function

[Joe Riel]

Is there a way to define constant/macros so that the value is expanded
during byte-compilation of a function that uses them?

For example, I want to do

(defconst  tag-prompt ?>)

(defun check (char) (eq char tag-prompt))

where the byte-compilation of check is the same as that of

(defun check (char) (eq char ?>))

-- 
Joe Riel