1.0.20.28: Fewer STYLE-WARNINGs for gf calls.
[sbcl.git] / src / compiler / ir1tran.lisp
index 18619b0..d09ddce 100644 (file)
         (eq (defined-fun-inlinep fun) :notinline)
         (eq (info :function :inlinep name) :notinline))))
 
+;; This will get redefined in PCL boot.
+(declaim (notinline update-info-for-gf))
+(defun maybe-update-info-for-gf (name)
+  (declare (ignorable name))
+  (values))
+
 ;;; Return a GLOBAL-VAR structure usable for referencing the global
 ;;; function NAME.
 (defun find-global-fun (name latep)
      :%source-name name
      :type (if (and (not latep)
                     (or *derive-function-types*
-                        (eq where :declared)
+                        (member where '(:declared :defined-method))
                         (and (member name *fun-names-in-this-file*
                                      :test #'equal)
                              (not (fun-lexically-notinline-p name)))))
-               (info :function :type name)
+               (progn
+                 (maybe-update-info-for-gf name)
+                 (info :function :type name))
                (specifier-type 'function))
+     :defined-type (if (eq where :defined)
+                       (info :function :type name)
+                       *universal-type*)
      :where-from where)))
 
 ;;; Has the *FREE-FUNS* entry FREE-FUN become invalid?
                        (type (type-specifier (info :variable :type name))))
                    `(macro . (the ,type ,expansion))))
                 (:constant
-                 (let ((value (info :variable :constant-value name)))
-                   (make-constant :value value
-                                  :%source-name name
-                                  :type (ctype-of value)
-                                  :where-from where-from)))
+                 (let ((value (symbol-value name)))
+                   ;; Override the values of standard symbols in XC,
+                   ;; since we can't redefine them.
+                   #+sb-xc-host
+                   (when (eql (find-symbol (symbol-name name) :cl) name)
+                     (multiple-value-bind (xc-value foundp)
+                         (info :variable :xc-constant-value name)
+                       (cond (foundp
+                              (setf value xc-value))
+                             ((not (eq value name))
+                              (compiler-warn
+                               "Using cross-compilation host's definition of ~S: ~A~%"
+                               name (symbol-value name))))))
+                   (find-constant value name)))
                 (t
                  (make-global-var :kind kind
                                   :%source-name name
 ;;; processed with MAKE-LOAD-FORM. We have to be careful, because
 ;;; CONSTANT might be circular. We also check that the constant (and
 ;;; any subparts) are dumpable at all.
-(eval-when (:compile-toplevel :load-toplevel :execute)
-  ;; The EVAL-WHEN is necessary for #.(1+ LIST-TO-HASH-TABLE-THRESHOLD)
-  ;; below. -- AL 20010227
-  (def!constant list-to-hash-table-threshold 32))
-(defun maybe-emit-make-load-forms (constant)
-  (let ((things-processed nil)
-        (count 0))
-    ;; FIXME: Does this LIST-or-HASH-TABLE messiness give much benefit?
-    (declare (type (or list hash-table) things-processed)
-             (type (integer 0 #.(1+ list-to-hash-table-threshold)) count)
-             (inline member))
-    (labels ((grovel (value)
+(defun maybe-emit-make-load-forms (constant &optional (name nil namep))
+  (let ((xset (alloc-xset)))
+    (labels ((trivialp (value)
+               (typep value
+                      '(or
+                        #-sb-xc-host unboxed-array
+                        #+sb-xc-host (simple-array (unsigned-byte 8) (*))
+                        symbol
+                        number
+                        character
+                        string)))
+             (grovel (value)
                ;; Unless VALUE is an object which which obviously
                ;; can't contain other objects
-               (unless (typep value
-                              '(or #-sb-xc-host unboxed-array
-                                   #+sb-xc-host (simple-array (unsigned-byte 8) (*))
-                                   symbol
-                                   number
-                                   character
-                                   string))
-                 (etypecase things-processed
-                   (list
-                    (when (member value things-processed :test #'eq)
-                      (return-from grovel nil))
-                    (push value things-processed)
-                    (incf count)
-                    (when (> count list-to-hash-table-threshold)
-                      (let ((things things-processed))
-                        (setf things-processed
-                              (make-hash-table :test 'eq))
-                        (dolist (thing things)
-                          (setf (gethash thing things-processed) t)))))
-                   (hash-table
-                    (when (gethash value things-processed)
-                      (return-from grovel nil))
-                    (setf (gethash value things-processed) t)))
+               (unless (trivialp value)
+                 (if (xset-member-p value xset)
+                     (return-from grovel nil)
+                     (add-to-xset value xset))
                  (typecase value
                    (cons
                     (grovel (car value))
                    ((array t)
                     (dotimes (i (array-total-size value))
                       (grovel (row-major-aref value i))))
-                   (;; In the target SBCL, we can dump any instance,
-                    ;; but in the cross-compilation host,
-                    ;; %INSTANCE-FOO functions don't work on general
-                    ;; instances, only on STRUCTURE!OBJECTs.
-                    #+sb-xc-host structure!object
+                   (#+sb-xc-host structure!object
                     #-sb-xc-host instance
+                    ;; In the target SBCL, we can dump any instance, but
+                    ;; in the cross-compilation host, %INSTANCE-FOO
+                    ;; functions don't work on general instances, only on
+                    ;; STRUCTURE!OBJECTs.
+                    ;;
+                    ;; FIXME: What about funcallable instances with
+                    ;; user-defined MAKE-LOAD-FORM methods?
                     (when (emit-make-load-form value)
                       (dotimes (i (- (%instance-length value)
                                      #+sb-xc-host 0
                     (compiler-error
                      "Objects of type ~S can't be dumped into fasl files."
                      (type-of value)))))))
-      (grovel constant)))
+      ;; Dump all non-trivial named constants using the name.
+      (if (and namep (not (typep constant '(or symbol character
+                                            ;; FIXME: Cold init breaks if we
+                                            ;; try to reference FP constants
+                                            ;; thru their names.
+                                            #+sb-xc-host number
+                                            #-sb-xc-host fixnum))))
+          (emit-make-load-form constant name)
+          (grovel constant))))
   (values))
 \f
 ;;;; some flow-graph hacking utilities
       (error "~S is already a predecessor of ~S." node-block block))
     (push node-block (block-pred block))))
 
+;;; Insert NEW before OLD in the flow-graph.
+(defun insert-node-before (old new)
+  (let ((prev (node-prev old))
+        (temp (make-ctran)))
+    (ensure-block-start prev)
+    (setf (ctran-next prev) nil)
+    (link-node-to-previous-ctran new prev)
+    (use-ctran new temp)
+    (link-node-to-previous-ctran old temp))
+  (values))
+
 ;;; This function is used to set the ctran for a node, and thus
 ;;; determine what receives the value.
 (defun use-lvar (node lvar)
     (values))
 
   ;; Generate a reference to a manifest constant, creating a new leaf
-  ;; if necessary. If we are producing a fasl file, make sure that
-  ;; MAKE-LOAD-FORM gets used on any parts of the constant that it
-  ;; needs to be.
+  ;; if necessary.
   (defun reference-constant (start next result value)
     (declare (type ctran start next)
-             (type (or lvar null) result)
-             (inline find-constant))
+             (type (or lvar null) result))
     (ir1-error-bailout (start next result value)
-     (when (producing-fasl-file)
-       (maybe-emit-make-load-forms value))
-     (let* ((leaf (find-constant value))
-            (res (make-ref leaf)))
-       (push res (leaf-refs leaf))
-       (link-node-to-previous-ctran res start)
-       (use-continuation res next result)))
+      (let* ((leaf (find-constant value))
+             (res (make-ref leaf)))
+        (push res (leaf-refs leaf))
+        (link-node-to-previous-ctran res start)
+        (use-continuation res next result)))
     (values)))
 
 ;;; Add FUNCTIONAL to the COMPONENT-REANALYZE-FUNCTIONALS, unless it's
 ;;; needed. If LEAF represents a defined function which has already
 ;;; been converted, and is not :NOTINLINE, then reference the
 ;;; functional instead.
-(defun reference-leaf (start next result leaf)
+(defun reference-leaf (start next result leaf &optional (name '.anonymous.))
   (declare (type ctran start next) (type (or lvar null) result) (type leaf leaf))
   (when (functional-p leaf)
     (assure-functional-live-p leaf))
                                     '(nil :optional)))
                      (maybe-reanalyze-functional leaf))
                    leaf))
-         (ref (make-ref leaf)))
+         (ref (make-ref leaf name)))
     (push ref (leaf-refs leaf))
     (setf (leaf-ever-used leaf) t)
     (link-node-to-previous-ctran ref start)
                ;; processing our own code, though.
                #+sb-xc-host
                (warn "reading an ignored variable: ~S" name)))
-           (reference-leaf start next result var))
+           (reference-leaf start next result var name))
           (cons
            (aver (eq (car var) 'macro))
            ;; FIXME: [Free] type declarations. -- APD, 2002-01-26
 \f
 ;;;; code coverage
 
-;;; Used as the CDR of the code coverage instrumentation records
-;;; (instead of NIL) to ensure that any well-behaving user code will
-;;; not have constants EQUAL to that record. This avoids problems with
-;;; the records getting coalesced with non-record conses, which then
-;;; get mutated when the instrumentation runs. Note that it's
-;;; important for multiple records for the same location to be
-;;; coalesced. -- JES, 2008-01-02
-(defconstant +code-coverage-unmarked+ '%code-coverage-unmarked%)
-
 ;;; Check the policy for whether we should generate code coverage
 ;;; instrumentation. If not, just return the original START
 ;;; ctran. Otherwise insert code coverage instrumentation after
                              `(locally
                                   (declare (optimize speed
                                                      (safety 0)
-                                                     (debug 0)))
+                                                     (debug 0)
+                                                     (check-constant-modification 0)))
                                 ;; We're being naughty here, and
                                 ;; modifying constant data. That's ok,
                                 ;; we know what we're doing.
            (type leaf var))
   (let* ((node (ir1-convert-combination start next result form var))
          (fun-lvar (basic-combination-fun node))
-         (type (leaf-type var)))
-    (when (validate-call-type node type t)
+         (type (leaf-type var))
+         (defined-type (leaf-defined-type var)))
+    (when (validate-call-type node type defined-type t)
       (setf (lvar-%derived-type fun-lvar)
             (make-single-value-type type))
       (setf (lvar-reoptimize fun-lvar) nil)))
         (setf (lambda-var-ignorep var) t)))))
   (values))
 
-(defun process-dx-decl (names vars fvars)
+(defun process-dx-decl (names vars fvars kind)
   (flet ((maybe-notify (control &rest args)
            (when (policy *lexenv* (> speed inhibit-warnings))
              (apply #'compiler-notify control args))))
-    (if (policy *lexenv* (= stack-allocate-dynamic-extent 3))
-        (dolist (name names)
-          (cond
-            ((symbolp name)
-             (let* ((bound-var (find-in-bindings vars name))
-                    (var (or bound-var
-                             (lexenv-find name vars)
-                             (find-free-var name))))
-               (etypecase var
-                 (leaf
-                  (if bound-var
-                      (setf (leaf-dynamic-extent var) t)
-                      (maybe-notify
-                       "ignoring DYNAMIC-EXTENT declaration for free ~S"
-                       name)))
-                 (cons
-                  (compiler-error "DYNAMIC-EXTENT on symbol-macro: ~S" name))
-                 (heap-alien-info
-                  (compiler-error "DYNAMIC-EXTENT on heap-alien-info: ~S"
-                                  name)))))
-            ((and (consp name)
-                  (eq (car name) 'function)
-                  (null (cddr name))
-                  (valid-function-name-p (cadr name)))
-             (let* ((fname (cadr name))
-                    (bound-fun (find fname fvars
-                                     :key #'leaf-source-name
-                                     :test #'equal)))
-               (etypecase bound-fun
-                 (leaf
-                  #!+stack-allocatable-closures
-                  (setf (leaf-dynamic-extent bound-fun) t)
-                  #!-stack-allocatable-closures
-                  (maybe-notify
-                   "ignoring DYNAMIC-EXTENT declaration on a function ~S ~
+    (let ((dx (cond ((eq 'truly-dynamic-extent kind)
+                     :truly)
+                    ((and (eq 'dynamic-extent kind)
+                          *stack-allocate-dynamic-extent*)
+                     t))))
+      (if dx
+          (dolist (name names)
+            (cond
+              ((symbolp name)
+               (let* ((bound-var (find-in-bindings vars name))
+                      (var (or bound-var
+                               (lexenv-find name vars)
+                               (find-free-var name))))
+                 (etypecase var
+                   (leaf
+                    (if bound-var
+                        (setf (leaf-dynamic-extent var) dx)
+                        (maybe-notify
+                         "ignoring DYNAMIC-EXTENT declaration for free ~S"
+                         name)))
+                   (cons
+                    (compiler-error "DYNAMIC-EXTENT on symbol-macro: ~S" name))
+                   (heap-alien-info
+                    (compiler-error "DYNAMIC-EXTENT on heap-alien-info: ~S"
+                                    name)))))
+              ((and (consp name)
+                    (eq (car name) 'function)
+                    (null (cddr name))
+                    (valid-function-name-p (cadr name)))
+               (let* ((fname (cadr name))
+                      (bound-fun (find fname fvars
+                                       :key #'leaf-source-name
+                                       :test #'equal)))
+                 (etypecase bound-fun
+                   (leaf
+                    #!+stack-allocatable-closures
+                    (setf (leaf-dynamic-extent bound-fun) dx)
+                    #!-stack-allocatable-closures
+                    (maybe-notify
+                     "ignoring DYNAMIC-EXTENT declaration on a function ~S ~
                     (not supported on this platform)." fname))
-                 (cons
-                  (compiler-error "DYNAMIC-EXTENT on macro: ~S" fname))
-                 (null
-                  (maybe-notify
-                   "ignoring DYNAMIC-EXTENT declaration for free ~S"
-                   fname)))))
-            (t (compiler-error "DYNAMIC-EXTENT on a weird thing: ~S" name))))
-      (maybe-notify "ignoring DYNAMIC-EXTENT declarations for ~S" names))))
+                   (cons
+                    (compiler-error "DYNAMIC-EXTENT on macro: ~S" fname))
+                   (null
+                    (maybe-notify
+                     "ignoring DYNAMIC-EXTENT declaration for free ~S"
+                     fname)))))
+              (t (compiler-error "DYNAMIC-EXTENT on a weird thing: ~S" name))))
+          (maybe-notify "ignoring DYNAMIC-EXTENT declarations for ~S" names)))))
 
 ;;; FIXME: This is non-ANSI, so the default should be T, or it should
 ;;; go away, I think.
                        (car types)
                        `(values ,@types)))))
           res))
-       (dynamic-extent
-        (process-dx-decl (cdr spec) vars fvars)
+       ((dynamic-extent truly-dynamic-extent)
+        (process-dx-decl (cdr spec) vars fvars (first spec))
         res)
        ((disable-package-locks enable-package-locks)
         (make-lexenv