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
|
'use strict';
const common = require('../common.js');
const url = require('url');
const URL = url.URL;
const assert = require('assert');
const inputs = require('../fixtures/url-inputs.js').urls;
const bench = common.createBenchmark(main, {
type: Object.keys(inputs),
method: ['legacy', 'whatwg'],
n: [1e5]
});
// At the time of writing, when using a passed property name to index
// the object, Crankshaft would generate a LoadKeyedGeneric even when it
// remains a constant in the function, so here we must use the literal
// instead to get a LoadNamedField.
function useLegacy(n, input) {
var obj = url.parse(input);
var noDead = {
protocol: obj.protocol,
auth: obj.auth,
host: obj.host,
hostname: obj.hostname,
port: obj.port,
pathname: obj.pathname,
search: obj.search,
hash: obj.hash
};
// It's necessary to assign the values to an object
// to avoid loop invariant code motion.
bench.start();
for (var i = 0; i < n; i += 1) {
noDead.protocol = obj.protocol;
noDead.auth = obj.auth;
noDead.host = obj.host;
noDead.hostname = obj.hostname;
noDead.port = obj.port;
noDead.pathname = obj.pathname;
noDead.search = obj.search;
noDead.hash = obj.hash;
}
bench.end(n);
return noDead;
}
function useWHATWG(n, input) {
var obj = new URL(input);
var noDead = {
protocol: obj.protocol,
auth: `${obj.username}:${obj.password}`,
host: obj.host,
hostname: obj.hostname,
port: obj.port,
pathname: obj.pathname,
search: obj.search,
hash: obj.hash
};
bench.start();
for (var i = 0; i < n; i += 1) {
noDead.protocol = obj.protocol;
noDead.auth = `${obj.username}:${obj.password}`;
noDead.host = obj.host;
noDead.hostname = obj.hostname;
noDead.port = obj.port;
noDead.pathname = obj.pathname;
noDead.search = obj.search;
noDead.hash = obj.hash;
}
bench.end(n);
return noDead;
}
function main(conf) {
const type = conf.type;
const n = conf.n | 0;
const method = conf.method;
const input = inputs[type];
if (!input) {
throw new Error('Unknown input type');
}
var noDead; // Avoid dead code elimination.
switch (method) {
case 'legacy':
noDead = useLegacy(n, input);
break;
case 'whatwg':
noDead = useWHATWG(n, input);
break;
default:
throw new Error('Unknown method');
}
assert.ok(noDead);
}
|
