-
Notifications
You must be signed in to change notification settings - Fork 1.3k
/
arith-tan-on-various-types.js
237 lines (204 loc) · 6.87 KB
/
arith-tan-on-various-types.js
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
//@ skip if not $jitTests
//@ requireOptions("--forceUnlinkedDFG=0")
//@ defaultNoEagerRun
"use strict";
let tanOfFour = Math.tan(4);
let validInputTestCases = [
// input as string, expected result as string.
["undefined", "NaN"],
["null", "0"],
["0", "0"],
["-0.", "-0"],
["4", "" + tanOfFour],
["Math.PI", "" + Math.tan(Math.PI)],
["Infinity", "NaN"],
["-Infinity", "NaN"],
["NaN", "NaN"],
["\"WebKit\"", "NaN"],
["\"4\"", "" + tanOfFour],
["{ valueOf: () => { return 4; } }", "" + tanOfFour],
];
let validInputTypedTestCases = validInputTestCases.map((element) => { return [eval("(" + element[0] + ")"), eval(element[1])] });
function isIdentical(result, expected)
{
if (expected === expected) {
if (result !== expected)
return false;
if (!expected)
return (1 / expected) === (1 / result);
return true;
}
return result !== result;
}
// Test Math.tan() without arguments.
function opaqueTanNoArgument() {
return Math.tan();
}
noInline(opaqueTanNoArgument);
noOSRExitFuzzing(opaqueTanNoArgument);
function testNoArgument() {
for (let i = 0; i < 1e4; ++i) {
let output = opaqueTanNoArgument();
if (output === output) {
throw "Failed opaqueTanNoArgument";
}
}
if (numberOfDFGCompiles(opaqueTanNoArgument) > 1)
throw "The call without arguments should never exit.";
}
testNoArgument();
// Test Math.tan() with a very polymorphic input. All test cases are seen at each iteration.
function opaqueAllTypesTan(argument) {
return Math.tan(argument);
}
noInline(opaqueAllTypesTan);
noOSRExitFuzzing(opaqueAllTypesTan);
function testAllTypesCall() {
for (let i = 0; i < 1e3; ++i) {
for (let testCaseInput of validInputTypedTestCases) {
let output = opaqueAllTypesTan(testCaseInput[0]);
if (!isIdentical(output, testCaseInput[1]))
throw "Failed testAllTypesCall for input " + testCaseInput[0] + " expected " + testCaseInput[1] + " got " + output;
}
}
if (numberOfDFGCompiles(opaqueAllTypesTan) > 2)
throw "We should have detected tan() was polymorphic and generated a generic version.";
}
testAllTypesCall();
// Test Math.tan() on a completely typed input. Every call see only one type.
function testTangleTypeCall() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueTan(argument) {
return Math.tan(argument);
}
noInline(opaqueTan);
noOSRExitFuzzing(opaqueTan);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueTan(${testCaseInput[0]}), ${testCaseInput[1]})) {
throw "Failed testTangleTypeCall()";
}
}
if (numberOfDFGCompiles(opaqueTan) > 1)
throw "We should have compiled a tangle tan for the expected type.";
`);
}
}
testTangleTypeCall();
// Test Math.tan() on constants
function testConstant() {
for (let testCaseInput of validInputTestCases) {
eval(`
function opaqueTanOnConstant() {
return Math.tan(${testCaseInput[0]});
}
noInline(opaqueTanOnConstant);
noOSRExitFuzzing(opaqueTanOnConstant);
for (let i = 0; i < 1e4; ++i) {
if (!isIdentical(opaqueTanOnConstant(), ${testCaseInput[1]})) {
throw "Failed testConstant()";
}
}
if (numberOfDFGCompiles(opaqueTanOnConstant) > 1)
throw "We should have compiled a tangle tan for the expected type.";
`);
}
}
testConstant();
// Verify we call valueOf() exactly once per call.
function opaqueTanForSideEffects(argument) {
return Math.tan(argument);
}
noInline(opaqueTanForSideEffects);
noOSRExitFuzzing(opaqueTanForSideEffects);
function testSideEffect() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let tan16 = Math.tan(16);
for (let i = 0; i < 1e4; ++i) {
if (opaqueTanForSideEffects(testObject) !== tan16)
throw "Incorrect result in testSideEffect()";
}
if (testObject.counter !== 1e4)
throw "Failed testSideEffect()";
if (numberOfDFGCompiles(opaqueTanForSideEffects) > 1)
throw "opaqueTanForSideEffects() is predictable, it should only be compiled once.";
}
testSideEffect();
// Verify tan() is not subject to CSE if the argument has side effects.
function opaqueTanForCSE(argument) {
return Math.tan(argument) + Math.tan(argument) + Math.tan(argument);
}
noInline(opaqueTanForCSE);
noOSRExitFuzzing(opaqueTanForCSE);
function testCSE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
let tan16 = Math.tan(16);
let threeTan16 = tan16 + tan16 + tan16;
for (let i = 0; i < 1e4; ++i) {
if (opaqueTanForCSE(testObject) !== threeTan16)
throw "Incorrect result in testCSE()";
}
if (testObject.counter !== 3e4)
throw "Failed testCSE()";
if (numberOfDFGCompiles(opaqueTanForCSE) > 1)
throw "opaqueTanForCSE() is predictable, it should only be compiled once.";
}
testCSE();
// Verify tan() is not subject to DCE if the argument has side effects.
function opaqueTanForDCE(argument) {
Math.tan(argument);
}
noInline(opaqueTanForDCE);
noOSRExitFuzzing(opaqueTanForDCE);
function testDCE() {
let testObject = {
counter: 0,
valueOf: function() { ++this.counter; return 16; }
};
for (let i = 0; i < 1e4; ++i) {
opaqueTanForDCE(testObject);
}
if (testObject.counter !== 1e4)
throw "Failed testDCE()";
if (numberOfDFGCompiles(opaqueTanForDCE) > 1)
throw "opaqueTanForDCE() is predictable, it should only be compiled once.";
}
testDCE();
// Test exceptions in the argument.
function testException() {
let counter = 0;
function opaqueTanWithException(argument) {
let result = Math.tan(argument);
++counter;
return result;
}
noInline(opaqueTanWithException);
let testObject = { valueOf: () => { return 64; } };
let tan64 = Math.tan(64);
// Warm up without exception.
for (let i = 0; i < 1e3; ++i) {
if (opaqueTanWithException(testObject) !== tan64)
throw "Incorrect result in opaqueTanWithException()";
}
let testThrowObject = { valueOf: () => { throw testObject; return 64; } };
for (let i = 0; i < 1e2; ++i) {
try {
if (opaqueTanWithException(testThrowObject) !== 8)
throw "This code should not be reached!!";
} catch (e) {
if (e !== testObject) {
throw "Wrong object thrown from opaqueTanWithException."
}
}
}
if (counter !== 1e3) {
throw "Invalid count in testException()";
}
}
testException();