0.6.12.49:

[sbcl.git] / make-host-2.sh

diff --git a/make-host-2.sh b/make-host-2.sh
index dd6751e..25be348 100644 (file)
--- a/make-host-2.sh
+++ b/make-host-2.sh
@@ -64,9 +64,18 @@ $SBCL_XC_HOST <<-'EOF' || exit 1
          (let (;; Life is simpler at genesis/cold-load time if we
                ;; needn't worry about byte-compiled code.
                (sb!ext:*byte-compile-top-level* nil)
+               ;; In order to increase microefficiency of the target Lisp, 
+               ;; enable old CMU CL defined-function-types-never-change
+               ;; optimizations. (ANSI says users aren't supposed to
+               ;; redefine our functions anyway; and developers can
+               ;; fend for themselves.)
+               #!-sb-fluid (sb!ext:*derive-function-types* t)
                ;; In order to reduce peak memory usage during GENESIS,
                ;; it helps to stuff several toplevel forms together 
-               ;; into the same function.
+               ;; into the same function. (This can't be the compiler
+               ;; default in general since it's non-ANSI in the case
+               ;; of e.g. some package-side-effecting forms, but it's
+               ;; safe in all the code we cross-compile.)
                (sb!c::*top-level-lambda-max* 10)
                ;; Let the target know that we're the cross-compiler.
                (*features* (cons :sb-xc *features*))