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1 // Copyright 2014 the V8 project authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-ayle license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Flags: --allow-natives-syntax --track-fields --expose-gc | |
6 | |
7 var global = Function('return this')(); | |
8 var verbose = 0; | |
9 | |
10 function test(ctor_desc, use_desc, migr_desc) { | |
11 var n = 5; | |
12 var objects = []; | |
13 var results = []; | |
14 | |
15 if (verbose) { | |
16 print(); | |
17 print("==========================================================="); | |
18 print("=== " + ctor_desc.name + | |
19 " | " + use_desc.name + " |--> " + migr_desc.name); | |
20 print("==========================================================="); | |
21 } | |
22 | |
23 // Clean ICs and transitions. | |
24 %NotifyContextDisposed(); | |
25 gc(); gc(); gc(); | |
26 | |
27 | |
28 // create objects | |
29 if (verbose) { | |
30 print("-----------------------------"); | |
31 print("--- construct"); | |
32 print(); | |
33 } | |
34 for (var i = 0; i < n; i++) { | |
35 objects[i] = ctor_desc.ctor.apply(ctor_desc, ctor_desc.args(i)); | |
36 } | |
37 | |
38 try { | |
39 // use them | |
40 if (verbose) { | |
41 print("-----------------------------"); | |
42 print("--- use 1"); | |
43 print(); | |
44 } | |
45 var use = use_desc.use1; | |
46 for (var i = 0; i < n; i++) { | |
47 if (i == 3) %OptimizeFunctionOnNextCall(use); | |
48 results[i] = use(objects[i], i); | |
49 } | |
50 | |
51 // trigger migrations | |
52 if (verbose) { | |
53 print("-----------------------------"); | |
54 print("--- trigger migration"); | |
55 print(); | |
56 } | |
57 var migr = migr_desc.migr; | |
58 for (var i = 0; i < n; i++) { | |
59 if (i == 3) %OptimizeFunctionOnNextCall(migr); | |
60 migr(objects[i], i); | |
61 } | |
62 | |
63 // use again | |
64 if (verbose) { | |
65 print("-----------------------------"); | |
66 print("--- use 2"); | |
67 print(); | |
68 } | |
69 var use = use_desc.use2 !== undefined ? use_desc.use2 : use_desc.use1; | |
70 for (var i = 0; i < n; i++) { | |
71 if (i == 3) %OptimizeFunctionOnNextCall(use); | |
72 results[i] = use(objects[i], i); | |
73 if (verbose >= 2) print(results[i]); | |
74 } | |
75 | |
76 } catch (e) { | |
77 if (verbose) print("--- incompatible use: " + e); | |
78 } | |
79 return results; | |
80 } | |
81 | |
82 | |
83 var ctors = [ | |
84 { | |
85 name: "none-to-double", | |
86 ctor: function(v) { return {a: v}; }, | |
87 args: function(i) { return [1.5 + i]; }, | |
88 }, | |
89 { | |
90 name: "double", | |
91 ctor: function(v) { var o = {}; o.a = v; return o; }, | |
92 args: function(i) { return [1.5 + i]; }, | |
93 }, | |
94 { | |
95 name: "none-to-smi", | |
96 ctor: function(v) { return {a: v}; }, | |
97 args: function(i) { return [i]; }, | |
98 }, | |
99 { | |
100 name: "smi", | |
101 ctor: function(v) { var o = {}; o.a = v; return o; }, | |
102 args: function(i) { return [i]; }, | |
103 }, | |
104 { | |
105 name: "none-to-object", | |
106 ctor: function(v) { return {a: v}; }, | |
107 args: function(i) { return ["s"]; }, | |
108 }, | |
109 { | |
110 name: "object", | |
111 ctor: function(v) { var o = {}; o.a = v; return o; }, | |
112 args: function(i) { return ["s"]; }, | |
113 }, | |
114 { | |
115 name: "{a:, b:, c:}", | |
116 ctor: function(v1, v2, v3) { return {a: v1, b: v2, c: v3}; }, | |
117 args: function(i) { return [1.5 + i, 1.6, 1.7]; }, | |
118 }, | |
119 { | |
120 name: "{a..h:}", | |
121 ctor: function(v) { var o = {}; o.h=o.g=o.f=o.e=o.d=o.c=o.b=o.a=v; return o;
}, | |
122 args: function(i) { return [1.5 + i]; }, | |
123 }, | |
124 { | |
125 name: "1", | |
126 ctor: function(v) { var o = 1; o.a = v; return o; }, | |
127 args: function(i) { return [1.5 + i]; }, | |
128 }, | |
129 { | |
130 name: "f()", | |
131 ctor: function(v) { var o = function() { return v;}; o.a = v; return o; }, | |
132 args: function(i) { return [1.5 + i]; }, | |
133 }, | |
134 { | |
135 name: "f().bind", | |
136 ctor: function(v) { var o = function(a,b,c) { return a+b+c; }; o = o.bind(o,
v, v+1, v+2.2); return o; }, | |
137 args: function(i) { return [1.5 + i]; }, | |
138 }, | |
139 { | |
140 name: "dictionary elements", | |
141 ctor: function(v) { var o = []; o[1] = v; o[200000] = v; return o; }, | |
142 args: function(i) { return [1.5 + i]; }, | |
143 }, | |
144 { | |
145 name: "json", | |
146 ctor: function(v) { var json = '{"a":' + v + ',"b":' + v + '}'; return JSON.
parse(json); }, | |
147 args: function(i) { return [1.5 + i]; }, | |
148 }, | |
149 { | |
150 name: "fast accessors", | |
151 accessor: { | |
152 get: function() { return this.a_; }, | |
153 set: function(value) {this.a_ = value; }, | |
154 configurable: true, | |
155 }, | |
156 ctor: function(v) { | |
157 var o = {a_:v}; | |
158 Object.defineProperty(o, "a", this.accessor); | |
159 return o; | |
160 }, | |
161 args: function(i) { return [1.5 + i]; }, | |
162 }, | |
163 { | |
164 name: "slow accessor", | |
165 accessor1: { value: this.a_, configurable: true }, | |
166 accessor2: { | |
167 get: function() { return this.a_; }, | |
168 set: function(value) {this.a_ = value; }, | |
169 configurable: true, | |
170 }, | |
171 ctor: function(v) { | |
172 var o = {a_:v}; | |
173 Object.defineProperty(o, "a", this.accessor1); | |
174 Object.defineProperty(o, "a", this.accessor2); | |
175 return o; | |
176 }, | |
177 args: function(i) { return [1.5 + i]; }, | |
178 }, | |
179 { | |
180 name: "slow", | |
181 proto: {}, | |
182 ctor: function(v) { | |
183 var o = {__proto__: this.proto}; | |
184 o.a = v; | |
185 for (var i = 0; %HasFastProperties(o); i++) o["f"+i] = v; | |
186 return o; | |
187 }, | |
188 args: function(i) { return [1.5 + i]; }, | |
189 }, | |
190 { | |
191 name: "global", | |
192 ctor: function(v) { return global; }, | |
193 args: function(i) { return [i]; }, | |
194 }, | |
195 ]; | |
196 | |
197 | |
198 | |
199 var uses = [ | |
200 { | |
201 name: "o.a+1.0", | |
202 use1: function(o, i) { return o.a + 1.0; }, | |
203 use2: function(o, i) { return o.a + 1.1; }, | |
204 }, | |
205 { | |
206 name: "o.b+1.0", | |
207 use1: function(o, i) { return o.b + 1.0; }, | |
208 use2: function(o, i) { return o.b + 1.1; }, | |
209 }, | |
210 { | |
211 name: "o[1]+1.0", | |
212 use1: function(o, i) { return o[1] + 1.0; }, | |
213 use2: function(o, i) { return o[1] + 1.1; }, | |
214 }, | |
215 { | |
216 name: "o[-1]+1.0", | |
217 use1: function(o, i) { return o[-1] + 1.0; }, | |
218 use2: function(o, i) { return o[-1] + 1.1; }, | |
219 }, | |
220 { | |
221 name: "()", | |
222 use1: function(o, i) { return o() + 1.0; }, | |
223 use2: function(o, i) { return o() + 1.1; }, | |
224 }, | |
225 ]; | |
226 | |
227 | |
228 | |
229 var migrations = [ | |
230 { | |
231 name: "to smi", | |
232 migr: function(o, i) { if (i == 0) o.a = 1; }, | |
233 }, | |
234 { | |
235 name: "to double", | |
236 migr: function(o, i) { if (i == 0) o.a = 1.1; }, | |
237 }, | |
238 { | |
239 name: "to object", | |
240 migr: function(o, i) { if (i == 0) o.a = {}; }, | |
241 }, | |
242 { | |
243 name: "set prototype {}", | |
244 migr: function(o, i) { o.__proto__ = {}; }, | |
245 }, | |
246 { | |
247 name: "%FunctionSetPrototype", | |
248 migr: function(o, i) { %FunctionSetPrototype(o, null); }, | |
249 }, | |
250 { | |
251 name: "modify prototype", | |
252 migr: function(o, i) { if (i == 0) o.__proto__.__proto1__ = [,,,5,,,]; }, | |
253 }, | |
254 { | |
255 name: "freeze prototype", | |
256 migr: function(o, i) { if (i == 0) Object.freeze(o.__proto__); }, | |
257 }, | |
258 { | |
259 name: "delete and re-add property", | |
260 migr: function(o, i) { var v = o.a; delete o.a; o.a = v; }, | |
261 }, | |
262 { | |
263 name: "modify prototype", | |
264 migr: function(o, i) { if (i >= 0) o.__proto__ = {}; }, | |
265 }, | |
266 { | |
267 name: "set property callback", | |
268 migr: function(o, i) { | |
269 Object.defineProperty(o, "a", { | |
270 get: function() { return 1.5 + i; }, | |
271 set: function(value) {}, | |
272 configurable: true, | |
273 }); | |
274 }, | |
275 }, | |
276 { | |
277 name: "observe", | |
278 migr: function(o, i) { Object.observe(o, function(){}); }, | |
279 }, | |
280 { | |
281 name: "%EnableAccessChecks", | |
282 migr: function(o, i) { %EnableAccessChecks(o); }, | |
283 }, | |
284 { | |
285 name: "%DisableAccessChecks", | |
286 migr: function(o, i) { if (o !== global) %DisableAccessChecks(o); }, | |
287 }, | |
288 { | |
289 name: "seal", | |
290 migr: function(o, i) { Object.seal(o); }, | |
291 }, | |
292 { // Must be the last in the sequence, because after the global object freeze | |
293 // the other modifications does not make sence. | |
294 name: "freeze", | |
295 migr: function(o, i) { Object.freeze(o); }, | |
296 }, | |
297 ]; | |
298 | |
299 | |
300 | |
301 migrations.forEach(function(migr) { | |
302 uses.forEach(function(use) { | |
303 ctors.forEach(function(ctor) { | |
304 test(ctor, use, migr); | |
305 }); | |
306 }); | |
307 }); | |
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