diff --git a/collects/typed-scheme/optimizer/optimizer.rkt b/collects/typed-scheme/optimizer/optimizer.rkt
index eb07adcd..3e7b9e73 100644
--- a/collects/typed-scheme/optimizer/optimizer.rkt
+++ b/collects/typed-scheme/optimizer/optimizer.rkt
@@ -2,6 +2,7 @@
 
 (require syntax/parse 
          syntax/id-table racket/dict
+         racket/pretty
          (for-template scheme/base
                        scheme/flonum scheme/fixnum scheme/unsafe/ops
                        racket/private/for)
@@ -91,7 +92,10 @@
                                  #:with e*:opt-expr #'e
                                  #'e*.opt]
                                 [e:expr #'e])])
-        ((optimize) stx))
+        (let ((result ((optimize) stx)))
+          (when *show-optimized-code*
+            (pretty-print (syntax->datum result)))
+          result))
       (when (and *log-optimizations?*
                  *log-optimizatons-to-log-file?*)
         (close-output-port port)))))
diff --git a/collects/typed-scheme/optimizer/utils.rkt b/collects/typed-scheme/optimizer/utils.rkt
index 088f0fd0..dfe0b200 100644
--- a/collects/typed-scheme/optimizer/utils.rkt
+++ b/collects/typed-scheme/optimizer/utils.rkt
@@ -7,7 +7,8 @@
          (types abbrev type-table utils subtype)
          (rep type-rep))
 
-(provide log-optimization *log-optimizations?* *log-optimizatons-to-log-file?* *optimization-log-file*
+(provide log-optimization *log-optimizations?* *log-optimizatons-to-log-file?*
+         *optimization-log-file* *show-optimized-code*
          subtypeof? isoftype?
          mk-unsafe-tbl
          n-ary->binary
@@ -25,6 +26,8 @@
               (syntax->datum stx)
               kind)
       #t))
+;; if set to #t, the optimizer will dump its result to stdout before compilation
+(define *show-optimized-code* #f)
 
 ;; is the syntax object s's type a subtype of t?
 (define (subtypeof? s t)