annotate presentation/presen.html @ 15:bbbeecda034d

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author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sat, 04 Jul 2015 23:10:39 +0900
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1 <!DOCTYPE html>
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2 <html>
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3 <head>
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4 <meta charset='utf-8'>
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5 <title>Presentation</title>
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6 <!-- style sheet links -->
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7 <link rel="stylesheet/less" href="themes/blank/projection.css.less" media="screen,projection">
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8 <link rel="stylesheet/less" href="themes/blank/screen.css.less" media="screen">
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9 <link rel="stylesheet/less" href="themes/blank/print.css.less" media="print">
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11 <link rel="stylesheet/less" href="blank.css.less" media="screen,projection">
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13 <!-- add js libs (less, jquery) -->
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14 <script src="js/less-1.1.4.min.js"></script>
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15 <script src="js/jquery-1.7.min.js"></script>
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17 <!-- S6 JS -->
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18 <script src="js/jquery.slideshow.js"></script>
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19 <script src="js/jquery.slideshow.counter.js"></script>
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20 <script src="js/jquery.slideshow.controls.js"></script>
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21 <script src="js/jquery.slideshow.footer.js"></script>
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22 <script src="js/jquery.slideshow.autoplay.js"></script>
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23 <script>
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24 $(document).ready( function() {
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25 Slideshow.init();
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26
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27 // Example 2: Start Off in Outline Mode
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28 // Slideshow.init( { mode: 'outline' } );
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29
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30 // Example 3: Use Custom Transition
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31 // Slideshow.transition = transitionScrollUp;
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32 // Slideshow.init();
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33
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34 // Example 4: Start Off in Autoplay Mode with Custom Transition
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35 // Slideshow.transition = transitionScrollUp;
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36 // Slideshow.init( { mode: 'autoplay' } );
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37 } );
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38 </script>
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39 </head>
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40 <body>
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42 <div class="layout">
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43 <div id="header"></div>
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44 <div id="footer">
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45 <div align="right">
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46 <img src="images/concurrency.png" width="200">
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47 </div>
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48 </div>
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49 </div>
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50
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51 <div class="presentation">
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53 <div class='slide cover'>
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54 <table width="90%" height="90%" border="0" align="center">
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55 <tr>
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56 <td><div align="center">
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57 <h1><font color="#808db5">Implementating Continuation based language in Clang and LLVM</font></h1>
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58 </div></td>
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59 </tr>
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60 <tr>
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61 <td><div align="left">
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62 Kaito Tokumori, Shinji Kono <br>
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63 University of the Ryukyus
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64 <script>
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65 document.write("<br>July 5, 2015");
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66 </script>
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67 <hr style="color:#ffcc00;background-color:#ffcc00;text-align:left;border:none;width:300%;height:0.2em;">
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68 </div></td>
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69 </tr>
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70 </table>
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71 </div>
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73 <div class='slide'>
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74 <h2>Objective</h2>
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75 <ul>
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76 <li>Achieve Reliable computation
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77 <li>Extract Concurrent Execution Automatically
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78 <li>Modify and Improve software in a Reliable way
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79 <li>Get more Reusablity
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80 </ul>
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81 <h3>Introducing new units of programming</h3>
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82 </div>
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85 <div class='slide'>
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86 <h2>Traditional units of programming</h2>
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87 <ul>
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88 <li>Machine instruction
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89 <li>Statements of programming language
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90 <li>Function call / Method
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91 <li>Module / Class / Interface
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92 <li>Thread / Process
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93 <li>Object
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94 <li>Record / Table
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95 </ul>
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96 </div>
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97
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98 <div class='slide'>
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99 <h2>What we want to do with programming units?</h2>
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100 <ul>
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101 <li>Divide large functions into small parts.
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102 <li>Add hidden arguments without code modification.
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103 <li>Add meta computation.
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104 <li>Extract concurrency from programming units.
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105 </ul>
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106 <h3>It is not easy to do this in the traditional units.</h3>
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107 </div>
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108
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109 <div class='slide'>
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110 <h2>New programming units</h2>
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111 <ul>
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112 <li>Units of programming: code segments, data segments.
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113 <li>Code segments are units of calculation.
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114 <li>Data segments are sets of typed data.
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115 </ul>
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116 </div>
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117
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118 <div class='slide'>
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119 <h2>Code segments</h2>
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120 <ul>
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121 <li>Function from input data segments to output data segments.
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122 <li>Code segments have no states.
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123 <li>Access in typed data in the data segments by name.
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124 <li>Specify code segments to be executed using goto.
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125 </ul>
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126 <h3>It is easy to divide or combine.</h3>
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127 </div>
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128
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129 <div class='slide'>
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130 <h2>Data segments</h2>
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131 <ul>
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132 <li>Set of typed data.
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133 <li>Type signatures are in meta data segments.
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134 <li>Variable and extendable data structure.
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135 <li>Data segments are dominated by connected code segments.
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136 <li>Code segments atomically access connected data segments.
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137 </ul>
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138 <h3>It is easy to divide or combine.</h3>
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139 </div>
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140
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141 <div class='slide'>
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142 <h2>Meta code / data segments</h2>
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143 <p>A thread of code segments has a context as a meta data segment</p>
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144 <ul>
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145 <li>Execution contexts: Thread
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146 <li>Type signatures of data segments.
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147 <li>Data segment linkages: Pointer
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148 <li>Machine code of code segments
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149 </ul>
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150 </div>
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151
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152 <div class='slide'>
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153 <h2>Continuation based C (CbC)</h2>
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154 <ul>
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155 <li>An implementation of code segments.
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156 <li>CbC stands for Continuation based C.
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157 <li>Basic syntax is the same as the C, except __code and goto.
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158 <li>__code is a type of code segment
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159 <li>Code segments end with parameterized goto.
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160 <li>Data segments are implemented as C structures.
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161 </ul>
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162 </div>
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163
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164 <div class='slide'>
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165 <h2>code segment syntax</h2>
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166 <table border='1' align='center' width='80%'>
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167 <tr><td width='50%'>
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168 <pre class='small_code'>
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169 __code f() {
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170 goto g();
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171 }
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172
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173 __code g() {
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174 goto h();
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175 }
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176 </pre>
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177 </td><td valign='top'>
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178 <ul>
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179 <li>code segment transition is goto.
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180 <li>Code segments have no return statement.
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181 <li>There are no return values.
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182 </ul>
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183 </td></tr>
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184 </table>
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185 </div>
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186
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187 <div class='slide'>
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188 <h2>code segment syntax with data segments</h2>
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189 <table border='1' align='center' width='80%'>
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190 <tr><td width='50%'>
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191 <pre class='small_code'>
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192 __code code1(struct Allocate* allocate,
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193 struct Element* element) {
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194 element ->value = 10;
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195 struct List* list = (struct List *)malloc(sizeof( struct List));
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196 goto append(allocate,list, element);
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197 }
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198
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199 __code append(struct Allocate* allocate, struct List* list, struct Element* element) {
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200 if(list->head) {
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201 list->tail->next = element;
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202 } else {
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203 list->head = element;
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204 }
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205 list->tail = element;
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206 list->tail->next = 0;
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207 goto code2(allocate,list, element);
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208 }
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209 </pre>
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210 </td><td valign='top'>
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211 <ul>
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212 <li>data segments are arguments of a code segment and a goto statement.
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213 </ul>
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214 </td></tr>
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215 </table>
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216 </div>
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217
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218 <div class='slide'>
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219 <h2>CbC compilers</h2>
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220 <ul>
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221 <li>Micro-C(one pass standalone compiler) 2001
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222 <li>on GCC(GNU Compiler Collection) 2008
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223 <li>on LLVM and Clang (Compiler framework) 2014
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224 <ul>
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225 <li><font color='red'>The latest!</font>
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226 </ul>
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227 </ul>
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228 </div>
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229
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230 <div class='slide'>
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231 <h2>LLVM and Clang's compilation flow</h2>
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232 <ul>
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233 <li>AST : Abstract Syntax Tree (C++ object)
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234 <li>LLVM IR is Intermediate Representation (bit code).
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235 <li>Clang translate C/C++/Obj-C into LLVM IR.
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236 <li>SelectionDAG : Code generator internal
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237 <li>Machine Code : LLVM Machine code
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238 </ul>
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239 <div align="center"><img src="fig/clang_llvm_structure.svg" width="45%"></div>
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240 </div>
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241
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242 <div class='slide'>
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243 <h2>Advantage of LLVM implementation</h2>
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244 <ul>
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245 <li>Apple supported (working on OS X).
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246 <li>OS X default compiler.
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247 <li>LLVM IR is well documented.
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248 <li>better than GCC
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249 </ul>
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250 </div>
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251
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252 <div class='slide'>
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253 <h2>CbC implementation strategy</h2>
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254 <ul>
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255 <li>define special type __code for code segments
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256 <li>no code segment prototyping (otherwise it becomes quite messy )
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257 <li>code segments are implemented as tail call force functions
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258 <li>Do not modify IR (Intermediate representations )
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259 <li>goto statement is actually a function call with following return statement <br>
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260 goto f() --> { f() ; return; }
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261 <li>allow mixing code segments and normal function calls ( goto with environment )
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262 </ul>
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263 </div>
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264
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265 <div class='slide'>
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266 <h2>LLVM IR</h2>
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267 <ul>
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268 <li>Intermediate Representation (bit code).
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269 <li>Three forms: in-memory IR, bitcode stream, human readable language.
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270 <li>it has precise type, data size, alignment
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271 <li>function call flags : tail, fastcc, cc10, cc11, Erlang, ghc
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272 </ul>
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273 <table width='100%'>
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274 <tr>
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275 <td style="border: double;">
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276 <pre class='code'>
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277 define fastcc void @factorial(i32 %x) #0 {
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278 entry:
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279 tail call fastcc void @factorial0(i32 1, i32 %x)
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280 ret void
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281 }
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282 </pre>
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283 </td>
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284 </tr>
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285 </table>
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286 </div>
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287
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288 <div class='slide'>
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289 <h2>CbC implementation strategy</h2>
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290 <ul>
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291 <li>Code segments are implemented by C functions with return-type __code.
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292 <li>Data segments are implemented by C structs.
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293 <li>Goto statement is implemented by setting tail call flag.
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294 <li>Goto with environment is implemented by setjmp and longjmp.
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295 </ul>
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296 </div>
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297
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298
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299 <div class='slide'>
9
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300 <h2>Prototype declaration generating</h2>
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301 <ul>
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302 <li>In CbC, programmer write a lot of code segments.
12
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303 <li>Automatically prototype declarator support it.
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304 <!-- <li>When parser meet a code segment call, it stop current parsing and search called code segment declaration.-->
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305 <li>If the declaration was not found, search definition and generate declaration.
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306 <ul>
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307 <li>Of course you can write declaration yourself too.
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308 </ul>
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309 </ul>
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310 <table border='1' width='80%' align='center'>
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311 <tr>
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312 <td>original input code
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313 <td>Clang generates it internally
9
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314 </tr>
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315 <tr>
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316 <td><pre class='small_code'>
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317 __code code1(int a, int b) {
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318 :
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319 goto code2(a,b);
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320 }
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321
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322 __code code2(int a, int b){
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323 :
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324 }
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325 </pre>
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326 <td><pre class='small_code'>
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327 <font color='red'>__code code2(int a, int b);</font>
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328 __code code1(int a, int b) {
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329 :
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330 goto code2(a,b);
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331 }
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332
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333 __code code2(int a, int b){
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334 :
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335 }
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336 </pre>
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337 </tr>
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338 </table>
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339 </div>
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340
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341 <div class='slide'>
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342 <h2>goto syntax for transition</h2>
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343 <ul>
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344 <li>Add return statement after goto transition.
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345 <li>It is one the requirement force to tail call elimination.
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346 </ul>
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347 <table border='1' width='80%' align='center'>
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348 <tr>
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349 <td>original input code
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350 <td>Clang generates it
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351 </tr>
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352 <tr>
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353 <td><pre class='small_code'>
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354 __code code1() {
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355 :
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356 goto code2();
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357 }
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358 </pre>
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359 <td><pre class='small_code'>
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360 void code1() {
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361 :
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362 code2();
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363 <font color='red'>return;</font>
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364 }
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365 </pre>
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366 </tr>
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367 </table>
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368 </div>
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369
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370 <div class='slide'>
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371 <h2>Forcing Tail Call Elimination</h2>
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372 <p>Tail call flag is set in CodeGen.</p>
13
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373 <p>Ensure TCE in SelectionDAGISel.</p>
11
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374 <div align='center'><img src="fig/clang_llvm_slide_cg_DAG.svg" width="60%"></div>
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375 </div>
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376
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377 <div class='slide'>
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378 <!-- <h2>Jmp instruction based transition</h2> -->
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379 <h2>What is tail call elimination?</h2>
9
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380 <ul>
13
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381 <li>Tail call is a function call immediately followed by return.
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382 <li>If stack frame have to be unchanged,
9
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383 <li>Tail call elimination replace tail call's call instructions with jmp instructions.
13
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384 <li>that is tail call function should have the same arguments and the same return type
9
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parents: 8
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385 </ul>
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parents: 8
diff changeset
386 <div align='center'><img src="fig/TCE.svg" width="40%"></div>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
387 </div>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
388
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff changeset
389
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
390 <div class='slide'>
13
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391 <h2>Tail Call Elimination requirements</h2>
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392 <ul>
9
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393 <li>Set tail flag at the code segments call.
13
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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394 <li>Tailcallopt path is enabled in the compiler.
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parents: 13
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395 <li>The caller and callee's calling conventions must be the same and their types should be cc10, cc11 or fastcc.
9
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396 <li>Return value type has to be the same as the caller's.
3
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397 </ul>
5
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parents: 4
diff changeset
398 </div>
ac2ec4334d49 implementation
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parents: 4
diff changeset
399
ac2ec4334d49 implementation
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400 <div class='slide'>
ac2ec4334d49 implementation
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401 <h2>Forcing Tail Call Elimination</h2>
3
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402 <ul>
9
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
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403 <li>Always add tail call elimination pass.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
404 <li>Tailcallopt is enabled in CbC.
3
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405 <li>Fast cc is used consistently in code segments call.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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406 <li>All the code segments return value type is void.
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407 </ul>
15
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 14
diff changeset
408 <p>This is the reason why we need __code type for code segments.</p>
13
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
409 </div>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
410
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
411 <div class='slide'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
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412 <h2>goto a code segment from a normal C function</h2>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
413 <ul>
14
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parents: 13
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414 <li>Assume we have code segment g and normal function f
13
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
415 <li>simply goto g() in C function f()
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
416 <li>goto g() never returns to function f
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
417 </ul>
15
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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diff changeset
418 <p>How to return to C from a code segment?</p>
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419 </div>
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420
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421 <div class='slide'>
12
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422 <h2>Goto with environment</h2>
13
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parents: 12
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423 <p>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
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424 We want provide continuation of function f.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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425 The continuation is not a simple code segment,
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
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426 because code segment has not state.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
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427 We represent the continuation with a code segment (__return) and a meta data segment (__environment).
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428 </ul>
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429 </div>
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430
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431 <div class='slide'>
13
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432 <h2>Syntax of Goto with environment</h2>
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433 <table width='100%'>
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434 <tr><td valign='top'>
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435 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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436 <li>Use new keywords __return and __environment.
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437 <li>__return is a code segment pointer for C functions.
14
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438 <li>__environment is a environment for C functions.
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439 <li>Code1 use a continuation with environments to return main function.
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440 </ul>
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441 <td style="border: double;">
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442 <pre class='small_code'><div class='highlight'>__code code1(int n,__code(*exit_code)(int,void *),void *exit_env){
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443 printf("code1 : code entry1\n");
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444 goto exit_code(n,exit_env);
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diff changeset
445 }
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
446
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
447 int caller(){
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
448 printf("caller : main1 entry\n");
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
449 __code (*__ret)(int, void *) = <font color='red'>__return</font>;
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
450 struct __CbC_env *__env = <font color='red'>__environment</font>;
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
451 goto code1(1, __ret, __env);
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
452 return 0;
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
453 }
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
454
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
455 int main(){
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
456 int n;
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
457 n = caller();
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
458 printf("return = %d\n",n);
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
459 return 0;
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
460 } </div></pre>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
461 </tr>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
462 </table>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
463 </div>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
464
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
465 <div class='slide'>
13
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
466 <h2>Implementation of goto with environment</h2>
15
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 14
diff changeset
467 <p>Several ways to implementation</p>
3
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
468 <ul>
14
b9179e9084d9 spell check
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 13
diff changeset
469 <li>setjmp/longjmp (LLVM)
13
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
470 <li>nested function closure with thread safe variable (GCC)
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
471 <li>direct manipulation of frame pointer and return value (Micro-C)
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
472 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
473 </div>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
474
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
475 <div class='slide'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
476 <h2>LLVM Implementation of goto with environment</h2>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
477 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 12
diff changeset
478 <li>Include setjmp.h internally.
3
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
479 <li>Generate C struct for saving environment.
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
480 <ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
481 <li>This struct is __environment.
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
482 </ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
483 <li>Insert setjmp in C function.
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
484 <li>Generate longjmp code segment as return.
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
485 <ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
486 <li>This code segment is pointed by __return.
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
487 </ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
488 </ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
489 </div>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
490
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
491
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
492 <div class='slide'>
5
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
493 <h2>Compiling result</h2>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
494 <table width='100%' align='center' border='1'>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
495 <tr>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
496 <td valign='top'>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
497 <pre class='small_code'>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
498
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
499 __code caller(int x)
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
500 {
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
501 goto code1(1, x); // should be jmp
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
502 }
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
503 </pre>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
504 <td>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
505 <pre class='small_code'>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
506 _caller: ## @factorial
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
507 .cfi_startproc
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
508 ## BB#0: ## %entry
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
509 subq $24, %rsp
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
510 Ltmp5:
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
511 .cfi_def_cfa_offset 32
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
512 movl $1, %eax
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
513 movl %edi, 20(%rsp) ## 4-byte Spill
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
514 movl %eax, %edi
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
515 movl 20(%rsp), %esi ## 4-byte Reload
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
516 addq $24, %rsp
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
517 <font color='red'>jmp</font> _code1 ## TAILCALL
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
518 .cfi_endproc
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
519 </pre>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
520 </tr>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
521 </table>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
522 <ul>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
523 <li>Code1 should called by jmp instruction.
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
524 <li>In assembly code, code1 called by jmp instruction.
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
525 <li>Tail call elimination was forced.
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
526 <li>If tail call elimination was failed, compiler output error messages.
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
527 </ul>
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
528 </div>
9
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
529 <!--
5
ac2ec4334d49 implementation
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 4
diff changeset
530 <div class='slide'>
6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
531 <h2>Execution Result</h2>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
532 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
533 <li>Conv1 program.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
534 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
535 <li>Repeat calculation program.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
536 <li>Stack is defined in the program.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
537 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
538 <li>Select execution code by arguments.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
539 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
540 <li>1: not optimized.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
541 <li>2,3: optimized stack operation.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
542 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
543 <li>Inline optimization is omitted.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
544 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
545 <table width='80%' align='center' border='1'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
546 <tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
547 <td width='30%'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
548 <td>Argument 1
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
549 <td>Argument 2
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
550 <td>Argument 3
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
551 </tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
552 <tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
553 <td>Micro-C
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
554 <td>6.875
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
555 <td>2.4562
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
556 <td>3.105
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
557 </tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
558 <tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
559 <td>GCC -O2
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
560 <td>2.9438
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
561 <td>0.955
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
562 <td>1.265
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
563 </tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
564 <tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
565 <td>LLVM and Clang -O0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
566 <td>5.835
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
567 <td>4.1887
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
568 <td>5.0625
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
569 </tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
570 <tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
571 <td>LLVM and Clang -O2
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
572 <td>3.3875
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
573 <td>2.29
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
574 <td>2.5087
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
575 </tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
576 </table>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
577 <table width='80%' align='center' border='0'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
578 <tr><td align='right'>unit : seconds</tr>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
579 </table>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
580 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
581 <li>LLVM and Clang compilers are faster than Micro-C when optimize is enabled.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
582 <li>CbC gets benefits from LLVM optimizations.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
583 <li>LLVM can compile CbC examples.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
584 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
585 </div>
9
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 8
diff changeset
586 -->
6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
587 <div class='slide'>
4
20257f618ddd slide: llvm structure
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 3
diff changeset
588 <h2>Conclusion</h2>
3
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
589 <ul>
6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
590 <li>CbC compiler on LLVM and Clang is implemented.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
591 <li>LLVM IR is not modified.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
592 <li>goto with environment is implemented by setjmp and longjmp.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
593 <li>Automatic prototype generating.
3
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
594 </ul>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
595 </div>
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
596
c50a033e6635 create presentation slide
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
597 <div class='slide'>
4
20257f618ddd slide: llvm structure
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 3
diff changeset
598 <h2>Future works</h2>
20257f618ddd slide: llvm structure
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 3
diff changeset
599 <ul>
6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
600 <li>Write operating system in CbC.
10
81195c2fcf4a fix typo
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 9
diff changeset
601 <ul>
81195c2fcf4a fix typo
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 9
diff changeset
602 <li>Gears OS
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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603 </ul>
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604 <li>Meta computation syntax.
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605 <li>More user friendly syntax.
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606 <li>Automatic data segment generator.
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607 <li>Signature for data segment.
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608 </ul>
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609 </div>
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610
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611 <div class='slide'>
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612 <h2>LLVM and Clang's intermediate representations</h2>
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613 <table border='1' align='center' width='80%'>
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614 <tr><td width='25%'>
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615 Name
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616 </td><td>
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617 Description
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618 </td></tr>
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619 <tr><td>
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620 clang AST
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621 </td><td>
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622 Abstract Syntax Tree. It is a representation of the structure source codes.
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623 </td></tr>
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624 <tr><td>
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625 LLVM IR
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626 </td><td>
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627 The main intermediate representation of LLVM. It has three different forms: as an in-memory compiler IR, as an on-disk bitcode representation, and as a human readable assembly language representation.
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628 </td></tr>
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629 <tr><td>
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630 SelectionDAG
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631 </td><td>
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632 Directed Acyclic Graph. Its nodes indicate what operation the node performs and the operands to the operation.
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633 </td></tr>
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634 <tr><td>
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635 Machine Code
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636 </td><td>
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637 This representation is designed to support both an SSA representation for machine code, as well as register allocated, non-SSA form.
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638 </td></tr>
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639 <tr><td>
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640 MC Layer
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641 </td><td>
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642 It is used to represent and process code at the raw machine code level. User can some kinds of file (.s, .o, .ll, a.out) by same API.
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643 </td></tr>
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644 </table>
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645 </div>
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646
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647 </div> <!-- presentation -->
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648 </body>
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649 </html>