9.3.2.htm

来自「建立《编译原理网络课程》的目的不仅使学生掌握构造编译程序的原理和技术」· HTM 代码 · 共 48 行

HTM
48
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<html>

<head>
<title>编译原理</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link type="text/css" rel="stylesheet" href="../css/specification.css">
</head>

<BODY>

<table align=right width=300>
<tr>
<td><img src="../images/previous.gif" onmouseover="javascript:style.cursor='hand'" onclick="vbscript:window.location.href='9.3.1.htm'" ></td>
<td>
<img src="../images/next.gif" onmouseover="javascript:style.cursor='hand'" onclick="vbscript:window.location.href='9.3.3.htm'" ></img></td>
</tr>
</table>
<br><br>

<font class="title2"><b>9.3.2 基本块的优化</b></font>            


<table>
<tr>
<td>&nbsp&nbsp&nbsp&nbsp</td>
<td class="content">
<p>
对应到死代码删除的dag操作相当容易实现。从dag中删掉对应到死变量的根(即没有父结点的结点),重复这个过程,直至删掉对应到死代码的所有结点。
</p>
</td>
</tr>
</table>

<p align=center> </p>

<br>

<br>
<table align=right width=300>
<tr>
<td>
<img src="../images/previous.gif" onmouseover="javascript:style.cursor='hand'" onclick="vbscript:window.location.href='9.3.1.htm'" ></img></td>
<td><img src="../images/next.gif" onmouseover="javascript:style.cursor='hand'" onclick="vbscript:window.location.href='9.3.3.htm'" ></td>
</tr>
</table>

</BODY>
<html><script language="JavaScript">

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