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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / a07e0b5e18412a1f896b84db14dd840a81d03920 / . / docs / Lexicon.html
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Reid Spencer85baf762004-08-17 09:38:50 +0000[diff] [blame]1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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3<head>
4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
5 <title>The LLVM Lexicon</title>
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7 <style type="text/css">
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15 <meta name="author" content="Various">
16 <meta name="description"
17 content="A glossary of terms used with the LLVM project.">
18</head>
19<body>
20<div class="doc_title">The LLVM Lexicon</div>
21<p class="doc_warning">NOTE: This document is a work in progress!</p>
22<!-- *********************************************************************** -->
23<div class="doc_section">Table Of Contents</div>
24<!-- *********************************************************************** -->
25<div class="doc_text">
26 <table>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]27 <tr><td colspan="8"><b>- <a href="#A">A</a> -</b></td></tr>
Reid Spencer85baf762004-08-17 09:38:50 +0000[diff] [blame]28 <tr>
29 <td><a href="#ADCE">ADCE</a></td>
30 <td></td>
31 <td></td>
32 </tr>
Reid Spencerce6be332004-08-24 18:34:10 +0000[diff] [blame]33 <tr><td colspan="8"><b>- <a href="#B">B</a> -</b></td></tr>
34 <tr>
35 <td><a href="#BURS">BURS</a></td>
36 <td></td>
37 <td></td>
38 </tr>
Reid Spencera07e0b52004-10-30 21:40:28 +0000[diff] [blame^]39 <tr><td colspan="8"><b>- <a href="#C">C</a> -</b></td></tr>
40 <tr>
41 <td><a href="#CSE">CSE</a></td>
42 <td></td>
43 <td></td>
44 </tr>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]45 <tr><td colspan="8"><b>- <a href="#D">D</a> -</b></td></tr>
46 <tr>
Misha Brukman9a4c9042004-09-05 03:00:20 +0000[diff] [blame]47 <td><a href="#DSA">DSA</a></td>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]48 <td><a href="#DSE">DSE</a></td>
49 <td></td>
50 <td></td>
51 </tr>
Reid Spencera07e0b52004-10-30 21:40:28 +0000[diff] [blame^]52 <tr><td colspan="8"><b>- <a href="#I">L</a> -</b></td></tr>
53 <tr>
54 <td><a href="#IPA">IPA</a></td>
55 <td><a href="#IPO">IPO</a></td>
56 <td></td>
57 <td></td>
58 </tr>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]59 <tr><td colspan="8"><b>- <a href="#L">L</a> -</b></td></tr>
60 <tr>
61 <td><a href="#LICM">LICM</a></td>
Misha Brukman183cfc22004-08-24 04:13:17 +0000[diff] [blame]62 <td><a href="#Load-VN">Load-VN</a></td>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]63 <td></td>
Reid Spencera07e0b52004-10-30 21:40:28 +0000[diff] [blame^]64 <td></td>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]65 </tr>
66 <tr><td colspan="8"><b>- <a href="#P">P</a> -</b></td></tr>
67 <tr>
68 <td><a href="#PRE">PRE</a></td>
69 <td></td>
70 <td></td>
71 </tr>
72 <tr><td colspan="8"><b>- <a href="#S">S</a> -</b></td></tr>
73 <tr>
74 <td><a href="#SCCP">SCCP</a></td>
75 <td><a href="#SSA">SSA</a></td>
76 <td></td>
77 </tr>
Reid Spencer85baf762004-08-17 09:38:50 +0000[diff] [blame]78 </table>
79</div>
80
81<!-- *********************************************************************** -->
82<div class="doc_section">Definitions</div>
83<!-- *********************************************************************** -->
84<!-- _______________________________________________________________________ -->
85<div class="doc_subsection"><a name="A">- A -</a></div>
86<div class="doc_text">
87 <dl>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]88 <dt><a name="ADCE"><b>ADCE</b></a></dt>
89 <dd>Aggressive Dead Code Elimination</dd>
Reid Spencer85baf762004-08-17 09:38:50 +0000[diff] [blame]90 </dl>
91</div>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]92<!-- _______________________________________________________________________ -->
Reid Spencerce6be332004-08-24 18:34:10 +0000[diff] [blame]93<div class="doc_subsection"><a name="B">- B -</a></div>
94<div class="doc_text">
95 <dl>
96 <dt><a name="BURS"><b>BURS</b></a></dt>
Chris Lattnerc4985ba2004-08-24 18:53:39 +0000[diff] [blame]97 <dd>Bottom Up Rewriting System - A method of instruction selection for
98 code generation. An example is the <a
99href="http://www.program-transformation.org/Transform/BURG">BURG</a> tool.</dd>
Reid Spencerce6be332004-08-24 18:34:10 +0000[diff] [blame]100 </dl>
101</div>
102<!-- _______________________________________________________________________ -->
Reid Spencera07e0b52004-10-30 21:40:28 +0000[diff] [blame^]103<div class="doc_subsection"><a name="C">- C -</a></div>
104<div class="doc_text">
105 <dl>
106 <dt><a name="CSE"><b>CSE</b></a></dt>
107 <dd>Common Subexpression Elimination. An optimization that removes common
108 subexpression compuation. For example <tt>(a+b)*(a+b)</tt> has two
109 subexpressions that are the same: <tt>(a+b)</tt>. This optimization would
110 perform the addition only once and then perform the multiply (but only if
111 its compulationally correct/safe).
112 </dl>
113</div>
114<!-- _______________________________________________________________________ -->
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]115<div class="doc_subsection"><a name="D">- D -</a></div>
116<div class="doc_text">
117 <dl>
Misha Brukman9a4c9042004-09-05 03:00:20 +0000[diff] [blame]118 <dt><a name="DSA"><b>DSA</b></a></dt>
Misha Brukman100bd712004-09-05 03:57:23 +0000[diff] [blame]119 <dd>Data Structure Analysis</dd>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]120 <dt><a name="DSE"><b>DSE</b></a></dt>
121 <dd>Dead Store Elimination</dd>
122 </dl>
123</div>
124<!-- _______________________________________________________________________ -->
Reid Spencera07e0b52004-10-30 21:40:28 +0000[diff] [blame^]125<div class="doc_subsection"><a name="I">- I -</a></div>
126<div class="doc_text">
127 <dl>
128 <dt><a name="IPA"><b>IPA</b></a></dt>
129 <dd>Inter-Procedural Analysis. Refers to any variety of code analysis that
130 occurs between procedures, functions or compilation units (modules).</dd>
131 <dt><a name="IPO"><b>IPO</b></a></dt>
132 <dd>Inter-Procedural Optimization. Refers to any variety of code
133 optimization that occurs between procedures, functions or compilation units
134 (modules).</dd>
135 </dl>
136</div>
137<!-- _______________________________________________________________________ -->
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]138<div class="doc_subsection"><a name="L">- L -</a></div>
139<div class="doc_text">
140 <dl>
141 <dt><a name="LICM"><b>LICM</b></a></dt>
142 <dd>Loop Invariant Code Motion</dd>
Misha Brukman183cfc22004-08-24 04:13:17 +0000[diff] [blame]143 <dt><a name="Load-VN"><b>Load-VN</b></a></dt>
Misha Brukmanec8fe3c2004-08-24 01:57:02 +0000[diff] [blame]144 <dd>Load Value Numbering</dd>
145 </dl>
146</div>
147<!-- _______________________________________________________________________ -->
148<div class="doc_subsection"><a name="P">- P -</a></div>
149<div class="doc_text">
150 <dl>
151 <dt><a name="PRE"><b>PRE</b></a></dt>
152 <dd>Partial Redundancy Elimination</dd>
153 </dl>
154</div>
155<!-- _______________________________________________________________________ -->
156<div class="doc_subsection"><a name="S">- S -</a></div>
157<div class="doc_text">
158 <dl>
159 <dt><a name="SCCP"><b>SCCP</b></a></dt>
160 <dd>Sparse Conditional Constant Propagation
161 <dt><a name="SSA"><b>SSA</b></a></dt>
162 <dd>Static Single Assignment</dd>
163 </dl>
164</div>
Reid Spencer85baf762004-08-17 09:38:50 +0000[diff] [blame]165<!-- *********************************************************************** -->
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