X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/a9cffac12f45d917ae632f4037991d7ba66091fb..dfdcf6ca08c0c619900fd7d81893121f80f02d9b:/src/final.lisp

diff --git a/src/final.lisp b/src/final.lisp
index dd8834f..5df72f1 100644
--- a/src/final.lisp
+++ b/src/final.lisp
@@ -35,7 +35,6 @@
 (defun test-module (path reason)
   "Reset the translator's state, read a module from PATH and output it with
    REASON, returning the result as a string."
-  (unless *builtin-module* (make-builtin-module))
   (clear-the-decks)
   (setf *module-map* (make-hash-table :test #'equal))
   (with-open-file (out *debugout-pathname*
@@ -44,4 +43,28 @@
 		   :if-does-not-exist :create)
     (output-module (read-module path) reason out)))
 
+;;;--------------------------------------------------------------------------
+;;; Calisthenics.
+
+(export 'exercise)
+(defun exercise ()
+  "Exercise the pieces of the metaobject protocol.
+
+   In some Lisps, the compiler is run the first time methods are called, to
+   do fancy just-in-time optimization things.  This is great, only the
+   program doesn't actually run for very long and a lot of that work is
+   wasted because we're going to have to do it again next time the program
+   starts.  Only, if we exercise the various methods, or at least a large
+   fraction of them, before we dump an image, then everything will be fast.
+
+   That's the theory anyway.  Call this function before you dump an image and
+   see what happens."
+
+  (clear-the-decks)
+  (dolist (reason '(:h :c))
+    (with-output-to-string (bitbucket)
+      (output-module *builtin-module* reason bitbucket)))
+
+  (clear-the-decks))
+
 ;;;----- That's all, folks --------------------------------------------------