1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
; Milawa - A Reflective Theorem Prover
; Copyright (C) 2005-2009 Kookamara LLC
;
; Contact:
;
; Kookamara LLC
; 11410 Windermere Meadows
; Austin, TX 78759, USA
; http://www.kookamara.com/
;
; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
; DEALINGS IN THE SOFTWARE.
;
; Original author: Jared Davis <jared@kookamara.com>
(in-package "ACL2")
(include-book "defun" :ttags :all)
;; We introduce some macros which can be used to redefine functions in certain
;; ways that improve their traceability.
;;
;; IMPORTANT NOTE: These macros only work on functions which
;; (1) have their guards verified, and
;; (2) were introduced with MILAWA::defun
;;
;; (redef-notinline foo)
;; Redefines foo (with its own definition), but adds (declare (notinline foo))
;; so that the compiler cannot optimize away recursive calls. In some lisps,
;; particularly OpenMCL, this will allow you to see all the calls with trace.
;;
;; (redef-original foo)
;; Redefines foo with its own definition, and without adding the notinline
;; declaration. In other words, this "restores foo to its original version"
;; which may give you better performance if the compiler chooses to optimize
;; away recursive calls of foo.
;;
;;
;; Here is an example:
;;
;; ACL2 !> (in-package "ACL2")
;; ACL2 !> (MILAWA::defun fact (x acc)
;; (declare (xargs :guard (and (natp x)
;; (natp acc))))
;; (if (zp x)
;; acc
;; (fact (- x 1) (* x acc))))
;; ACL2 !> (trace$ fact)
;; ACL2 !> (fact 5 1)
;;
;; 1> (ACL2_*1*_ACL2::FACT 5 1)
;; 2> (FACT 5 1)
;; <2 (FACT 120)
;; <1 (ACL2_*1*_ACL2::FACT 120)
;; 120
;;
;; ACL2 !> (redef-notinline fact)
;; ACL2 !> (fact 5 1)
;;
;; 1> (ACL2_*1*_ACL2::FACT 5 1)
;; 2> (FACT 5 1)
;; 3> (FACT 4 5)
;; 4> (FACT 3 20)
;; 5> (FACT 2 60)
;; 6> (FACT 1 120)
;; 7> (FACT 0 120)
;; <7 (FACT 120)
;; <6 (FACT 120)
;; <5 (FACT 120)
;; <4 (FACT 120)
;; <3 (FACT 120)
;; <2 (FACT 120)
;; <1 (ACL2_*1*_ACL2::FACT 120)
;; 120
;;
;; ACL2 !> (redef-original fact)
;; ACL2 !> (fact 5 1)
;;
;; 1> (ACL2_*1*_ACL2::FACT 5 1)
;; 2> (FACT 5 1)
;; <2 (FACT 120)
;; <1 (ACL2_*1*_ACL2::FACT 120)
;; 120
(defun redef-notinline-fn (f notinlinep)
(declare (ignore f notinlinep)
(xargs :guard t))
nil)
(defttag redef-notinline)
(progn!
(set-raw-mode t)
(defun redef-notinline-fn (f notinlinep)
(let* ((state *the-live-state*)
(world (w state))
(def (assoc f (get-acl2-defun-entries world))))
(if (not def)
(cw "redef-notinline-fn: attempting to redefine ~x0, which wasn't introduced with MILAWA::defun.~%" f)
(let* ((formals (second def))
(new-def (if notinlinep
`(defun ,f ,formals
,@(cons `(declare (notinline ,f)) (cddr def)))
`(defun ,f ,formals
,@(cddr def)))))
(eval new-def)
nil)))))
(defmacro redef-original (f)
`(redef-notinline-fn ',f nil))
(defmacro redef-notinline (f)
`(redef-notinline-fn ',f t))
|
