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1 <!DOCTYPE html>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2 <html>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 src='./trunk/slides.js'></script>
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8 </head>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 <body style='display: none'>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 <section class='slides layout-regular template-default'>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 <article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 <h1>CbCコンパイラのLLVM3.4上での実装</h1>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 <p><br>Kaito Tokumori<br>July 30, 2013</p>
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16 </article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 <article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 <br>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 <h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 研究背景と目的
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 </h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 <p>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 比較的歴史の古い言語であるCは普及率が高く多くのシステムに用いられている。そのCの問題のひとつに関数呼び出しの際のオーバーヘッドが大きいというものがある。当研究室ではこれらの問題に取り組むためにCountinuation based C (CbC)という言語の開発を行なっている。CbCはCの関数呼び出しやループ制御の代わりに継続を用いて制御を行うもので、Cの下位言語に当たる。本研究ではmicro-c,GCC版に次ぐLLVMベースのCbCコンパイラ開発を行う。
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25 </p>
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26 </article>
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28 <article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 <br>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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30 <h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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31 今週の課題
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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32 </h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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33 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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34 <li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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35 goto cs()のときtail call eliminationが行われるよう条件を満たさせる
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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36 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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37 <li>GuaranteedTailCallOptを立てよう</li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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38 </ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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39 </li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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40 </ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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41 <br>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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42 </article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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44 <article>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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45 <br>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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46 <h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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47 TailCallElim
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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48 </h3>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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49 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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50 <li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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51 __codeが含まれている場合にGuaranteedTailCallOptを立てることが出来た。
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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52 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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53 <li>しかしその場合でも、unreachableで終わっている必要があり無意味</li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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54 </ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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55 </li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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56 <li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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57 clangで吐き出したllvmコードをllcでコンパイルするとcallがとれていた。
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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58 <ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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59 <li>また、castに成功しており、callの直後にreturnがあると判別されていた。</li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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60 </ul>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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61 </li>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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62 </ul>
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63 <br>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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64 </article>
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66 </section>
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67 </body>
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68 </html>
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