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feature/native-comp e81643b 1/8: * Add `comp-insert-insn'

From: Andrea Corallo
Subject: feature/native-comp e81643b 1/8: * Add `comp-insert-insn'
Date: Fri, 1 Jan 2021 08:08:11 -0500 (EST)

branch: feature/native-comp
commit e81643bef500e1f1ec49d152f7db1ffc5a74ecd5
Author: Andrea Corallo <akrl@sdf.org>
Commit: Andrea Corallo <akrl@sdf.org>

    * Add `comp-insert-insn'
        * lisp/emacs-lisp/comp.el (comp-insert-insn): New inline.
        (comp-emit-call-cstr): Split logic and call `comp-insert-insn'.
 lisp/emacs-lisp/comp.el | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index b6ade0b..d7578fd 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -2391,16 +2391,21 @@ TARGET-BB-SYM is the symbol name of the target block."
           (comp-emit-assume 'and target-mvar cstr block-target negated))
         finally (cl-return-from in-the-basic-block)))))))
+(defsubst comp-insert-insn (insn insn-cell)
+  "Insert INSN as second insn of INSN-CELL."
+  (let ((next-cell (cdr insn-cell))
+        (new-cell `(,insn)))
+    (setf (cdr insn-cell) new-cell
+          (cdr new-cell) next-cell
+          (comp-func-ssa-status comp-func) 'dirty)))
 (defun comp-emit-call-cstr (mvar call-cell cstr)
   "Emit a constraint CSTR for MVAR after CALL-CELL."
-  (let* ((next-cell (cdr call-cell))
-         (new-mvar (make-comp-mvar :slot (comp-mvar-slot mvar)))
+  (let* ((new-mvar (make-comp-mvar :slot (comp-mvar-slot mvar)))
          ;; Have new-mvar as LHS *and* RHS to ensure monotonicity and
          ;; fwprop convergence!!
-         (new-cell `((assume ,new-mvar (and ,new-mvar ,mvar ,cstr)))))
-    (setf (cdr call-cell) new-cell
-          (cdr new-cell) next-cell
-          (comp-func-ssa-status comp-func) 'dirty)))
+         (insn `(assume ,new-mvar (and ,new-mvar ,mvar ,cstr))))
+    (comp-insert-insn insn call-cell)))
 (defun comp-lambda-list-gen (lambda-list)
   "Return a generator to iterate over LAMBDA-LIST."

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