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
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="generator" content="AsciiDoc 8.6.8">
<title>SSASimplify</title>
<link rel="stylesheet" href="./asciidoc.css" type="text/css">
<link rel="stylesheet" href="./pygments.css" type="text/css">
<script type="text/javascript" src="./asciidoc.js"></script>
<script type="text/javascript">
/*<![CDATA[*/
asciidoc.install();
/*]]>*/
</script>
<link rel="stylesheet" href="./mlton.css" type="text/css"/>
</head>
<body class="article">
<div id="banner">
<div id="banner-home">
<a href="./Home">MLton 20130715</a>
</div>
</div>
<div id="header">
<h1>SSASimplify</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>The optimization passes for the <a href="SSA">SSA</a> <a href="IntermediateLanguage">IntermediateLanguage</a> are
collected and controlled by the <span class="monospaced">Simplify</span> functor
(<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/simplify.sig"><span class="monospaced">simplify.sig</span></a>,
<a href="https://github.com/MLton/mlton/blob/master/mlton/ssa/simplify.fun"><span class="monospaced">simplify.fun</span></a>).</p></div>
<div class="paragraph"><p>The following optimization passes are implemented:</p></div>
<div class="ulist"><ul>
<li>
<p>
<a href="CombineConversions">CombineConversions</a>
</p>
</li>
<li>
<p>
<a href="CommonArg">CommonArg</a>
</p>
</li>
<li>
<p>
<a href="CommonBlock">CommonBlock</a>
</p>
</li>
<li>
<p>
<a href="CommonSubexp">CommonSubexp</a>
</p>
</li>
<li>
<p>
<a href="ConstantPropagation">ConstantPropagation</a>
</p>
</li>
<li>
<p>
<a href="Contify">Contify</a>
</p>
</li>
<li>
<p>
<a href="Flatten">Flatten</a>
</p>
</li>
<li>
<p>
<a href="Inline">Inline</a>
</p>
</li>
<li>
<p>
<a href="IntroduceLoops">IntroduceLoops</a>
</p>
</li>
<li>
<p>
<a href="KnownCase">KnownCase</a>
</p>
</li>
<li>
<p>
<a href="LocalFlatten">LocalFlatten</a>
</p>
</li>
<li>
<p>
<a href="LocalRef">LocalRef</a>
</p>
</li>
<li>
<p>
<a href="LoopInvariant">LoopInvariant</a>
</p>
</li>
<li>
<p>
<a href="Redundant">Redundant</a>
</p>
</li>
<li>
<p>
<a href="RedundantTests">RedundantTests</a>
</p>
</li>
<li>
<p>
<a href="RemoveUnused">RemoveUnused</a>
</p>
</li>
<li>
<p>
<a href="SimplifyTypes">SimplifyTypes</a>
</p>
</li>
<li>
<p>
<a href="Useless">Useless</a>
</p>
</li>
</ul></div>
<div class="paragraph"><p>The following implementation passes are implemented:</p></div>
<div class="ulist"><ul>
<li>
<p>
<a href="PolyEqual">PolyEqual</a>
</p>
</li>
<li>
<p>
<a href="PolyHash">PolyHash</a>
</p>
</li>
</ul></div>
<div class="paragraph"><p>There are additional analysis and rewrite passes that augment many of the other optimization passes:</p></div>
<div class="ulist"><ul>
<li>
<p>
<a href="Multi">Multi</a>
</p>
</li>
<li>
<p>
<a href="Restore">Restore</a>
</p>
</li>
<li>
<p>
<a href="Shrink">Shrink</a>
</p>
</li>
</ul></div>
<div class="paragraph"><p>The optimization passes can be controlled from the command-line by the options:</p></div>
<div class="ulist"><ul>
<li>
<p>
<span class="monospaced">-diag-pass <pass></span> — keep diagnostic info for pass
</p>
</li>
<li>
<p>
<span class="monospaced">-drop-pass <pass></span> — omit optimization pass
</p>
</li>
<li>
<p>
<span class="monospaced">-keep-pass <pass></span> — keep the results of pass
</p>
</li>
<li>
<p>
<span class="monospaced">-loop-passes <n></span> — loop optimization passes
</p>
</li>
<li>
<p>
<span class="monospaced">-ssa-passes <passes></span> — ssa optimization passes
</p>
</li>
</ul></div>
</div>
</div>
</div>
<div id="footnotes"><hr></div>
<div id="footer">
<div id="footer-text">
</div>
<div id="footer-badges">
</div>
</div>
</body>
</html>
|
