1 ;;;; machine-independent aspects of the object representation and
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from the CMU CL system, which was
8 ;;;; written at Carnegie Mellon University and released into the
9 ;;;; public domain. The software is in the public domain and is
10 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
11 ;;;; files for more information.
18 ;;;; primitive type definitions
20 (def-primitive-type t (descriptor-reg))
21 (setf *backend-t-primitive-type* (primitive-type-or-lose 't))
23 ;;; primitive integer types that fit in registers
24 (def-primitive-type positive-fixnum (any-reg signed-reg unsigned-reg)
25 :type (unsigned-byte 29))
27 (def-primitive-type unsigned-byte-31 (signed-reg unsigned-reg descriptor-reg)
28 :type (unsigned-byte 31))
30 (def-primitive-type unsigned-byte-32 (unsigned-reg descriptor-reg)
31 :type (unsigned-byte 32))
33 (def-primitive-type unsigned-byte-63 (signed-reg unsigned-reg descriptor-reg)
34 :type (unsigned-byte 63))
36 (def-primitive-type unsigned-byte-64 (unsigned-reg descriptor-reg)
37 :type (unsigned-byte 64))
38 (def-primitive-type fixnum (any-reg signed-reg)
39 :type (signed-byte 30))
41 (def-primitive-type signed-byte-32 (signed-reg descriptor-reg)
42 :type (signed-byte 32))
44 (def-primitive-type signed-byte-64 (signed-reg descriptor-reg)
45 :type (signed-byte 64))
47 (defvar *fixnum-primitive-type* (primitive-type-or-lose 'fixnum))
49 (def-primitive-type-alias tagged-num (:or positive-fixnum fixnum))
50 (def-primitive-type-alias unsigned-num (:or #!-alpha unsigned-byte-32
51 #!-alpha unsigned-byte-31
52 #!+alpha unsigned-byte-64
53 #!+alpha unsigned-byte-63
55 (def-primitive-type-alias signed-num (:or #!-alpha signed-byte-32
56 #!+alpha signed-byte-64
58 #!-alpha unsigned-byte-31
59 #!+alpha unsigned-byte-63
62 ;;; other primitive immediate types
63 (def-primitive-type base-char (base-char-reg any-reg))
65 ;;; primitive pointer types
66 (def-primitive-type function (descriptor-reg))
67 (def-primitive-type list (descriptor-reg))
68 (def-primitive-type instance (descriptor-reg))
70 (def-primitive-type funcallable-instance (descriptor-reg))
72 ;;; primitive other-pointer number types
73 (def-primitive-type bignum (descriptor-reg))
74 (def-primitive-type ratio (descriptor-reg))
75 (def-primitive-type complex (descriptor-reg))
76 (def-primitive-type single-float (single-reg descriptor-reg))
77 (def-primitive-type double-float (double-reg descriptor-reg))
79 (def-primitive-type long-float (long-reg descriptor-reg))
80 (def-primitive-type complex-single-float (complex-single-reg descriptor-reg)
81 :type (complex single-float))
82 (def-primitive-type complex-double-float (complex-double-reg descriptor-reg)
83 :type (complex double-float))
85 (def-primitive-type complex-long-float (complex-long-reg descriptor-reg)
86 :type (complex long-float))
88 ;;; primitive other-pointer array types
89 (def-primitive-type simple-string (descriptor-reg)
90 :type simple-base-string)
91 (def-primitive-type simple-bit-vector (descriptor-reg))
92 (def-primitive-type simple-vector (descriptor-reg))
93 (def-primitive-type simple-array-unsigned-byte-2 (descriptor-reg)
94 :type (simple-array (unsigned-byte 2) (*)))
95 (def-primitive-type simple-array-unsigned-byte-4 (descriptor-reg)
96 :type (simple-array (unsigned-byte 4) (*)))
97 (def-primitive-type simple-array-unsigned-byte-8 (descriptor-reg)
98 :type (simple-array (unsigned-byte 8) (*)))
99 (def-primitive-type simple-array-unsigned-byte-16 (descriptor-reg)
100 :type (simple-array (unsigned-byte 16) (*)))
101 (def-primitive-type simple-array-unsigned-byte-32 (descriptor-reg)
102 :type (simple-array (unsigned-byte 32) (*)))
103 (def-primitive-type simple-array-signed-byte-8 (descriptor-reg)
104 :type (simple-array (signed-byte 8) (*)))
105 (def-primitive-type simple-array-signed-byte-16 (descriptor-reg)
106 :type (simple-array (signed-byte 16) (*)))
107 (def-primitive-type simple-array-signed-byte-30 (descriptor-reg)
108 :type (simple-array (signed-byte 30) (*)))
109 (def-primitive-type simple-array-signed-byte-32 (descriptor-reg)
110 :type (simple-array (signed-byte 32) (*)))
111 (def-primitive-type simple-array-single-float (descriptor-reg)
112 :type (simple-array single-float (*)))
113 (def-primitive-type simple-array-double-float (descriptor-reg)
114 :type (simple-array double-float (*)))
116 (def-primitive-type simple-array-long-float (descriptor-reg)
117 :type (simple-array long-float (*)))
118 (def-primitive-type simple-array-complex-single-float (descriptor-reg)
119 :type (simple-array (complex single-float) (*)))
120 (def-primitive-type simple-array-complex-double-float (descriptor-reg)
121 :type (simple-array (complex double-float) (*)))
123 (def-primitive-type simple-array-complex-long-float (descriptor-reg)
124 :type (simple-array (complex long-float) (*)))
126 ;;; Note: The complex array types are not included, 'cause it is pointless to
127 ;;; restrict VOPs to them.
129 ;;; other primitive other-pointer types
130 (def-primitive-type system-area-pointer (sap-reg descriptor-reg))
131 (def-primitive-type weak-pointer (descriptor-reg))
133 ;;; miscellaneous primitive types that don't exist at the LISP level
134 (def-primitive-type catch-block (catch-block) :type nil)
136 ;;;; PRIMITIVE-TYPE-OF and friends
138 ;;; Return the most restrictive primitive type that contains Object.
139 (def-vm-support-routine primitive-type-of (object)
140 (let ((type (ctype-of object)))
141 (cond ((not (member-type-p type)) (primitive-type type))
142 ((equal (member-type-members type) '(nil))
143 (primitive-type-or-lose 'list))
145 *backend-t-primitive-type*))))
147 (defvar *simple-array-primitive-types*
148 '((base-char . simple-string)
149 (bit . simple-bit-vector)
150 ((unsigned-byte 2) . simple-array-unsigned-byte-2)
151 ((unsigned-byte 4) . simple-array-unsigned-byte-4)
152 ((unsigned-byte 8) . simple-array-unsigned-byte-8)
153 ((unsigned-byte 16) . simple-array-unsigned-byte-16)
154 ((unsigned-byte 32) . simple-array-unsigned-byte-32)
155 ((signed-byte 8) . simple-array-signed-byte-8)
156 ((signed-byte 16) . simple-array-signed-byte-16)
157 (fixnum . simple-array-signed-byte-30)
158 ((signed-byte 32) . simple-array-signed-byte-32)
159 (single-float . simple-array-single-float)
160 (double-float . simple-array-double-float)
161 #!+long-float (long-float . simple-array-long-float)
162 ((complex single-float) . simple-array-complex-single-float)
163 ((complex double-float) . simple-array-complex-double-float)
165 ((complex long-float) . simple-array-complex-long-float)
168 "An a-list for mapping simple array element types to their
169 corresponding primitive types.")
171 ;;; Return the primitive type corresponding to a type descriptor
172 ;;; structure. The second value is true when the primitive type is
173 ;;; exactly equivalent to the argument Lisp type.
175 ;;; In a bootstrapping situation, we should be careful to use the
176 ;;; correct values for the system parameters.
178 ;;; We need an aux function because we need to use both def-vm-support-routine
179 ;;; and defun-cached.
180 (def-vm-support-routine primitive-type (type)
181 (primitive-type-aux type))
182 (defun-cached (primitive-type-aux
183 :hash-function (lambda (x)
184 (logand (type-hash-value x) #x1FF))
187 :default (values nil :empty))
189 (declare (type ctype type))
190 (macrolet ((any () '(values *backend-t-primitive-type* nil))
192 `(values (primitive-type-or-lose ',type) t))
194 `(values (primitive-type-or-lose ',type) nil)))
195 (flet ((maybe-numeric-type-union (t1 t2)
196 (let ((t1-name (primitive-type-name t1))
197 (t2-name (primitive-type-name t2)))
200 (if (or (eq t2-name 'fixnum)
201 (eq t2-name #!-alpha 'signed-byte-32
202 #!+alpha 'signed-byte-64)
203 (eq t2-name #!-alpha 'unsigned-byte-31
204 #!+alpha 'unsigned-byte-63)
205 (eq t2-name #!-alpha 'unsigned-byte-32
206 #!+alpha 'unsigned-byte-64))
210 (#!-alpha signed-byte-32
211 #!+alpha signed-byte-64 t2)
212 (#!-alpha unsigned-byte-31
213 #!+alpha unsigned-byte-63
214 (primitive-type-or-lose
215 #!-alpha 'signed-byte-32
216 #!+alpha 'signed-byte-64))))
217 (#!-alpha signed-byte-32
218 #!+alpha signed-byte-64
219 (if (eq t2-name #!-alpha 'unsigned-byte-31
220 #!+alpha 'unsigned-byte-63)
222 (#!-alpha unsigned-byte-31
223 #!+alpha unsigned-byte-63
224 (if (eq t2-name #!-alpha 'unsigned-byte-32
225 #!+alpha 'unsigned-byte-64)
229 (let ((lo (numeric-type-low type))
230 (hi (numeric-type-high type)))
231 (case (numeric-type-complexp type)
233 (case (numeric-type-class type)
237 `((positive-fixnum 0 ,(1- (ash 1 29)))
239 (unsigned-byte-31 0 ,(1- (ash 1 31)))
241 (unsigned-byte-32 0 ,(1- (ash 1 32)))
243 (unsigned-byte-63 0 ,(1- (ash 1 63)))
245 (unsigned-byte-64 0 ,(1- (ash 1 64)))
249 (signed-byte-32 ,(ash -1 31)
252 (signed-byte-64 ,(ash -1 63)
254 (if (or (< hi (ash -1 29))
255 (> lo (1- (ash 1 29))))
258 (let ((type (car spec))
261 (when (<= min lo hi max)
263 (primitive-type-or-lose type)
264 (and (= lo min) (= hi max))))))))
265 ((or (and hi (< hi most-negative-fixnum))
266 (and lo (> lo most-positive-fixnum)))
271 (let ((exact (and (null lo) (null hi))))
272 (case (numeric-type-format type)
273 ((short-float single-float)
274 (values (primitive-type-or-lose 'single-float)
276 ((double-float #!-long-float long-float)
277 (values (primitive-type-or-lose 'double-float)
281 (values (primitive-type-or-lose 'long-float)
288 (if (eq (numeric-type-class type) 'float)
289 (let ((exact (and (null lo) (null hi))))
290 (case (numeric-type-format type)
291 ((short-float single-float)
292 (values (primitive-type-or-lose 'complex-single-float)
294 ((double-float #!-long-float long-float)
295 (values (primitive-type-or-lose 'complex-double-float)
299 (values (primitive-type-or-lose 'complex-long-float)
307 (if (array-type-complexp type)
309 (let* ((dims (array-type-dimensions type))
310 (etype (array-type-specialized-element-type type))
311 (type-spec (type-specifier etype))
312 (ptype (cdr (assoc type-spec *simple-array-primitive-types*
314 (if (and (consp dims) (null (rest dims)) ptype)
315 (values (primitive-type-or-lose ptype)
316 (eq (first dims) '*))
319 (if (type= type (specifier-type 'list))
321 (let ((types (union-type-types type)))
322 (multiple-value-bind (res exact) (primitive-type (first types))
323 (dolist (type (rest types) (values res exact))
324 (multiple-value-bind (ptype ptype-exact)
325 (primitive-type type)
326 (unless ptype-exact (setq exact nil))
327 (unless (eq ptype res)
329 (or (maybe-numeric-type-union res ptype)
330 (maybe-numeric-type-union ptype res))))
333 (return (any)))))))))))
335 (let* ((members (member-type-members type))
336 (res (primitive-type-of (first members))))
337 (dolist (mem (rest members) (values res nil))
338 (let ((ptype (primitive-type-of mem)))
339 (unless (eq ptype res)
340 (let ((new-ptype (or (maybe-numeric-type-union res ptype)
341 (maybe-numeric-type-union ptype res))))
344 (return (any)))))))))
346 (ecase (named-type-name type)
347 ((t *) (values *backend-t-primitive-type* t))
349 (sb!xc:built-in-class
350 (case (sb!xc:class-name type)
351 ((complex function instance
352 system-area-pointer weak-pointer)
353 (values (primitive-type-or-lose (sb!xc:class-name type)) t))
354 (funcallable-instance
365 (if (csubtypep type (specifier-type 'function))