;;;; some flow-graph hacking utilities
;;; This function sets up the back link between the node and the
-;;; continuation which continues at it.
+;;; ctran which continues at it.
(defun link-node-to-previous-ctran (node ctran)
(declare (type node node) (type ctran ctran))
(aver (not (ctran-next ctran)))
(setf (ctran-next ctran) node)
(setf (node-prev node) ctran))
-;;; This function is used to set the continuation for a node, and thus
-;;; determine what receives the value and what is evaluated next. If
-;;; the continuation has no block, then we make it be in the block
-;;; that the node is in. If the continuation heads its block, we end
-;;; our block and link it to that block. If the continuation is not
-;;; currently used, then we set the DERIVED-TYPE for the continuation
-;;; to that of the node, so that a little type propagation gets done.
+;;; This function is used to set the ctran for a node, and thus
+;;; determine what is evaluated next. If the ctran has no block, then
+;;; we make it be in the block that the node is in. If the ctran heads
+;;; its block, we end our block and link it to that block.
#!-sb-fluid (declaim (inline use-ctran))
(defun use-ctran (node ctran)
(declare (type node node) (type ctran ctran))
(setf (block-succ node-block) (list block))
(when (memq node-block (block-pred block))
(error "~S is already a predecessor of ~S." node-block block))
- (push node-block (block-pred block))
- #+nil(reoptimize-ctran ctran))) ; XXX
+ (push node-block (block-pred block))))
+;;; This function is used to set the ctran for a node, and thus
+;;; determine what receives the value.
(defun use-lvar (node lvar)
(declare (type valued-node node) (type (or lvar null) lvar))
(aver (not (node-lvar node)))
(declaim (ftype (sfunction (ctran ctran (or lvar null) list leaf) combination)
ir1-convert-combination))
(defun ir1-convert-combination (start next result form fun)
- (let ((fun-ctran (make-ctran))
+ (let ((ctran (make-ctran))
(fun-lvar (make-lvar)))
- (ir1-convert start fun-ctran fun-lvar `(the (or function symbol) ,fun))
- (ir1-convert-combination-args fun-ctran fun-lvar next result (cdr form))))
+ (ir1-convert start ctran fun-lvar `(the (or function symbol) ,fun))
+ (ir1-convert-combination-args fun-lvar ctran next result (cdr form))))
;;; Convert the arguments to a call and make the COMBINATION
-;;; node. FUN-CONT is the continuation which yields the function to
-;;; call. ARGS is the list of arguments for the call, which defaults
-;;; to the cdr of source. We return the COMBINATION node.
-(defun ir1-convert-combination-args (fun-ctran fun-lvar next result args)
- (declare (type ctran fun-ctran next)
+;;; node. FUN-LVAR yields the function to call. ARGS is the list of
+;;; arguments for the call, which defaults to the cdr of source. We
+;;; return the COMBINATION node.
+(defun ir1-convert-combination-args (fun-lvar start next result args)
+ (declare (type ctran start next)
(type lvar fun-lvar)
(type (or lvar null) result)
(list args))
(let ((node (make-combination fun-lvar)))
(setf (lvar-dest fun-lvar) node)
(collect ((arg-lvars))
- (let ((this-start fun-ctran))
+ (let ((this-start start))
(dolist (arg args)
(let ((this-ctran (make-ctran))
(this-lvar (make-lvar node)))
(ir1-convert start next result transformed)))
(ir1-convert-maybe-predicate start next result form var))))))
-;;; If the function has the PREDICATE attribute, and the CONT's DEST
+;;; If the function has the PREDICATE attribute, and the RESULT's DEST
;;; isn't an IF, then we convert (IF <form> T NIL), ensuring that a
;;; predicate always appears in a conditional context.
;;;
;;; call is legal.
;;;
;;; If the call is legal, we also propagate type assertions from the
-;;; function type to the arg and result continuations. We do this now
-;;; so that IR1 optimize doesn't have to redundantly do the check
-;;; later so that it can do the type propagation.
+;;; function type to the arg and result lvars. We do this now so that
+;;; IR1 optimize doesn't have to redundantly do the check later so
+;;; that it can do the type propagation.
(defun ir1-convert-combination-checking-type (start next result form var)
(declare (type ctran start next) (type (or lvar null) result)
(list form)
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