diff options
Diffstat (limited to 'lisp/emacs-lisp/comp.el')
| -rw-r--r-- | lisp/emacs-lisp/comp.el | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el index 7054c588999..000f266ba22 100644 --- a/lisp/emacs-lisp/comp.el +++ b/lisp/emacs-lisp/comp.el @@ -32,6 +32,7 @@ (require 'gv) (require 'cl-lib) (require 'cl-extra) +(require 'cl-macs) (require 'subr-x) (defgroup comp nil @@ -113,7 +114,9 @@ Can be used by code that wants to expand differently in this case.") (defvar comp-pass nil "Every pass has the right to bind what it likes here.") -(defvar comp-emitting-impure nil "Non nil to emit only impure objects.") +(defvar comp-curr-allocation-class 'd-base + "Current allocation class. +Can be one of: 'd-base', 'd-impure' or 'd-ephemeral'. See `comp-ctxt'.") (defconst comp-passes '(comp-spill-lap comp-limplify @@ -196,8 +199,10 @@ This is to build the prev field.") (d-base (make-comp-data-container) :type comp-data-container :documentation "Standard data relocated in use by functions.") (d-impure (make-comp-data-container) :type comp-data-container - :documentation "Data relocated that cannot be moved into pure space. -This is tipically for top-level forms other than defun.")) + :documentation "Relocated data that cannot be moved into pure space. +This is tipically for top-level forms other than defun.") + (d-ephemeral (make-comp-data-container) :type comp-data-container + :documentation "Relocated data not necessary after load.")) (cl-defstruct comp-args-base (min nil :type number @@ -314,8 +319,9 @@ structure.") (type nil :type symbol :documentation "When non nil indicates the type when known at compile time.") - (impure nil :type boolean - :documentation "When non nil can't be copied into pure space.")) + (alloc-class nil :type symbol + :documentation "Can be one of: 'd-base' 'd-impure' + or 'd-ephemeral'.")) ;; Special vars used by some passes (defvar comp-func) @@ -352,13 +358,17 @@ The corresponding index is returned." (push obj (comp-data-container-l cont)) (puthash obj (hash-table-count h) h)))) +(defsubst comp-alloc-class-to-container (alloc-class) + "Given ALLOC-CLASS return the data container for the current context. +Assume allocaiton class 'd-base as default." + (cl-struct-slot-value 'comp-ctxt (or alloc-class 'd-base) comp-ctxt)) + (defun comp-add-const-to-relocs (obj) "Keep track of OBJ into the ctxt relocations. The corresponding index is returned." (comp-add-const-to-relocs-to-cont obj - (if comp-emitting-impure - (comp-ctxt-d-impure comp-ctxt) - (comp-ctxt-d-base comp-ctxt)))) + (comp-alloc-class-to-container + comp-curr-allocation-class))) (defmacro comp-within-log-buff (&rest body) "Execute BODY while at the end the log-buffer. @@ -632,7 +642,7 @@ STACK-OFF is the index of the first slot frame involved." (when const-vld (comp-add-const-to-relocs constant)) (make--comp-mvar :slot slot :const-vld const-vld :constant constant - :type type :impure comp-emitting-impure)) + :type type :alloc-class comp-curr-allocation-class)) (defun comp-new-frame (size &optional ssa) "Return a clean frame of meta variables of size SIZE. @@ -1143,7 +1153,7 @@ the annotation emission." (cl-defmethod comp-emit-for-top-level ((form byte-to-native-top-level)) (let ((form (byte-to-native-top-level-form form))) (comp-emit (comp-call 'eval - (let ((comp-emitting-impure t)) + (let ((comp-curr-allocation-class 'd-impure)) (make-comp-mvar :constant form)) (make-comp-mvar :constant t))))) @@ -1158,7 +1168,7 @@ into the C code forwarding the compilation unit." ;; Once an .eln is loaded and Emacs is dumped 'top_level_run' has no ;; reasons to be execute ever again. Therefore all objects can be ;; just impure. - (let* ((comp-emitting-impure t) + (let* ((comp-curr-allocation-class 'd-impure) (func (make-comp-func :name 'top-level-run :c-name "top_level_run" :args (make-comp-args :min 1 :max 1) @@ -1271,11 +1281,13 @@ Top-level forms for the current context are rendered too." ;; this form is called 'minimal SSA form'. ;; This pass should be run every time basic blocks or m-var are shuffled. -(cl-defun make-comp-ssa-mvar (&key slot (constant nil const-vld) type) +(cl-defun make-comp-ssa-mvar (&key slot (constant nil const-vld) type + (alloc-class comp-curr-allocation-class)) (let ((mvar (make--comp-mvar :slot slot :const-vld const-vld :constant constant - :type type))) + :type type + :alloc-class alloc-class))) (setf (comp-mvar-id mvar) (sxhash-eq mvar)) mvar)) @@ -1960,6 +1972,7 @@ These are substituted with a normal 'set' op." Prepare every function for final compilation and drive the C back-end." (comp-data-container-check (comp-ctxt-d-base comp-ctxt)) (comp-data-container-check (comp-ctxt-d-impure comp-ctxt)) + (comp-data-container-check (comp-ctxt-d-ephemeral comp-ctxt)) (unless comp-dry-run (comp--compile-ctxt-to-file name))) |