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Feb 18
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 18 Feb 2014 17:45:15 +0900
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4 <meta charset='utf-8'>
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5 <title>Presentation</title>
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6 <script src='./s6_trunk/slides.js'></script>
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8 /****
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9 * Add your styles here.
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27 .slide pre {
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43 .slide code {
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47 </style>
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48 </head>
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49 <body>
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50
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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51 <section class='slides'>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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52 <!-- Add your slides here. Delete or comment out the slides below. -->
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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53 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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54 <h1>CbCコンパイラの LLVM/clang 3.5上での実装</h1>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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55 <p><br>Kaito Tokumori<br>February 11, 2014</p>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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56 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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57 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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58 <h3>研究目的</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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59 <p>　当研究室ではプログラムをコードセグメント、データセグメントという単位を用いて書くという手法を提案している。その手法を用いてプログラミングを行う言語として"CbC"の開発を行っており、これはCの下位の言語である。CbCにおいてコードセグメント間の移動はgoto文を用いた軽量継続によって行われ、これはTail Call Eliminationという最適化の強制によって実現される。</p>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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60 <p>本研究過去に開発されたmicro-c,GCC版のコンパイラに続くLLVM/clang上でのCbCコンパイラの開発を行う。</p>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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61 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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62
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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63 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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64 <h3>今回したこと</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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65 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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66 <li>ちょっとしたバグ修正</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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67 <li>例題を動かす</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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68 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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69 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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70
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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71 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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72 <h3>ちょっとしたバグ修正</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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73 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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74 <li>コードセグメントを呼び出すときに TailCall フラグが立っていない時エラーを出す処理の部分</li>
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75 <li>呼び出されたコードセグメントを getCalledFunction で取得していたがポインタ経由でアクセスされたものの場合 この戻り値が null になる.</li>
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76 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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77 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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78
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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79 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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80 <h3>例題を動かす</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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81 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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82 <li>gcc では大丈夫だったが clang では関数のプロトタイプ宣言がないと怒られたので記述. </li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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83 <li>_CbC_return を __return に. </li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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84 <li>実装の問題で, {} を使わない if文の下に継続を用いると不具合があったので {} で閉じた. </li>
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85 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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86 </article>
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87
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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88 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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89 <h3>例題を動かす</h3>
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90 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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91 <li>動いた<ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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92 <li>arg.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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93 <li>conv.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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94 <li>fact-a.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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95 <li>factorial.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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96 <li>goto.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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97 <li>regexp</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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98 <li>stack1.c</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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99 </ul></li>
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100 <li>動いてない<ul>
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101 <li>conv1</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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102 </ul></li>
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103 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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104 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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105
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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106 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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107 <h3>conv1.c</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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108 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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109 <li>O0, O1 だと問題なく動作.</li>
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110 <li>O2 以降は引数1, 3の場合にセグフォ</li>
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111 <li>O2 以降の時 TailCallFlag を付け損ねている場合がある. (他の最適化の影響?)</li>
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112 <li>ループ回数を減らすと動作. 261989以上でセグフォ. </li>
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113 <li>gcc側は逆に O2 以上だと動く...</li>
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114 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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115 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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116
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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117 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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118 <h3>原因調査</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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119 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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120 <li>Inliner の有無がバグの発生に関わっている.</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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121 <li>Inliner の設定をO0,O1の場合に統一すると TCE も発生するしプログラムも動く.</li>
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122 <li>Optimize Level に寄る Inliner の設定の違いは InlineThreshold の違い.</li>
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123 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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124 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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125
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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126 <article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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127 <h3>次回課題</h3>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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128 <ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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129 <li>if文のやつの対応となんで TCE 失敗してるのか, conv1動かないのかの調査, 修正.</li>
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130 <li>論文書かないといけない</li>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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131 </ul>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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132 </article>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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133 </section>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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134 </body>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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135 </html>