X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fpolicies.lisp;h=78759f47fefa55d515ac6da93af31a7322b9652f;hb=b43b6e70ce48d959d77f7f56be9d11aa101fdd7d;hp=e68e4b05b552367fed2115b6a202423f1eef59fc;hpb=7a7a5268d45a213d425228e87c9ecc9f79bd7858;p=sbcl.git

diff --git a/src/compiler/policies.lisp b/src/compiler/policies.lisp
index e68e4b0..78759f4 100644
--- a/src/compiler/policies.lisp
+++ b/src/compiler/policies.lisp
@@ -80,3 +80,10 @@
 (define-optimization-quality compute-debug-fun
     debug
   ("no" "minimal" "yes" "yes"))
+
+(define-optimization-quality preserve-single-use-debug-variables
+    (if (and (>= debug 2)
+             (< speed 3))
+        3
+        0)
+  ("no" "no" "no" "yes"))