diff --git a/elfconvert.sh b/elfconvert.sh
index 206835c..410f38b 100755
--- a/elfconvert.sh
+++ b/elfconvert.sh
@@ -11,7 +11,7 @@ case $SAR_ARGV0 in
   *) sbcl_subdir=k8
 esac
 sbcl=$RUNFILES/google3/third_party/lisp/sbcl/binary-distribution/$sbcl_subdir/bin/sbcl
-args=(--noinform --dynamic-space-size 512MB)
+args=(--noinform --dynamic-space-size 1GB)
 mode='(setq *evaluator-mode* :compile)'
 script=$RUNFILES/google3/third_party/lisp/sbcl/src/tools-for-build/elftool
 
@@ -19,10 +19,20 @@ action=$1
 input=$2
 output=$3
 
+compactcore=/tmp/compact-$$.core
+tmpcore=/tmp/patched-$$.core
+DSS=16384
+
 case $action in
   split)
-    exec $sbcl ${args[@]} --eval "$mode" --load $script --eval \
-      '(sb-editcore:split-core "'$input'" "'$output'")' --quit ;;
+    exec $sbcl ${args[@]} --eval "$mode" --load $script \
+     --eval '(sb-editcore:reorganize-core "'$input'" "'$compactcore'")' \
+     --eval '(sb-editcore:move-dynamic-code-to-text-space "'$compactcore'" "'$tmpcore'")' \
+     --eval '(delete-file "'$compactcore'")' \
+     --eval '(sb-editcore:redirect-text-space-calls "'$tmpcore'")' \
+     --eval '(sb-editcore:split-core "'$tmpcore'" "'$output'" :dynamic-space-size '$DSS')' \
+     --eval '(delete-file "'$tmpcore'")' --quit ;;
+
   copy)
     exec $sbcl ${args[@]} --eval "$mode" --load $script --eval \
       '(sb-editcore::copy-to-elf-obj "'$input'" "'$output'")' --quit ;;