X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fir1opt.lisp;h=8a4d87ed7e8b56b9735c330a13a43a89eb58d8e7;hb=d94c1b4a8c534bde146823f56558faf37cd4c4d7;hp=59b6bfdf7b5077a236dc3cd545b4919813e75699;hpb=a1a34a500b880ab761291350300d8d3184574183;p=sbcl.git

diff --git a/src/compiler/ir1opt.lisp b/src/compiler/ir1opt.lisp
index 59b6bfd..8a4d87e 100644
--- a/src/compiler/ir1opt.lisp
+++ b/src/compiler/ir1opt.lisp
@@ -222,7 +222,7 @@
                                 it (coerce-to-values type)))
                               (t (coerce-to-values type)))))
                dest)))))
-  (lvar-%externally-checkable-type lvar))
+  (or (lvar-%externally-checkable-type lvar) *wild-type*))
 #!-sb-fluid(declaim (inline flush-lvar-externally-checkable-type))
 (defun flush-lvar-externally-checkable-type (lvar)
   (declare (type lvar lvar))
@@ -1988,6 +1988,15 @@
         (unlink-node call)
         (when vals
           (reoptimize-lvar (first vals)))
+        ;; Propagate derived types from the VALUES call to its args:
+        ;; transforms can leave the VALUES call with a better type
+        ;; than its args have, so make sure not to throw that away.
+        (let ((types (values-type-types (node-derived-type use))))
+          (dolist (val vals)
+            (when types
+              (let ((type (pop types)))
+                (assert-lvar-type val type '((type-check . 0)))))))
+        ;; Propagate declared types of MV-BIND variables.
         (propagate-to-args use fun)
         (reoptimize-call use))
       t)))