don't stack-allocate specialized vectors on non-conservtive control stacks

[sbcl.git] / src / compiler / ir1util.lisp

diff --git a/src/compiler/ir1util.lisp b/src/compiler/ir1util.lisp
index e3ef6cf..33a8d3d 100644 (file)
--- a/src/compiler/ir1util.lisp
+++ b/src/compiler/ir1util.lisp
@@ -149,6 +149,16 @@
            (t (eq (block-start (first (block-succ (node-block node))))
                   (node-prev dest))))))
 
+;;; Returns the defined (usually untrusted) type of the combination,
+;;; or NIL if we couldn't figure it out.
+(defun combination-defined-type (combination)
+  (let ((use (principal-lvar-use (basic-combination-fun combination))))
+    (or (when (ref-p use)
+          (let ((type (leaf-defined-type (ref-leaf use))))
+            (when (fun-type-p type)
+              (fun-type-returns type))))
+        *wild-type*)))
+
 ;;; Return true if LVAR destination is executed after node with only
 ;;; uninteresting nodes intervening.
 ;;;
@@ -588,7 +598,6 @@
                               dx arg recheck-component)))
                (ref
                 (let* ((other (trivial-lambda-var-ref-lvar use)))
-                  (print (list :ref use other))
                   (unless (eq other lvar)
                     (handle-nested-dynamic-extent-lvars
                      dx other recheck-component)))))))