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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29324 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2006-07-27 04:24:14 +00:00
parent 825405c0c1
commit 6883a88fdb
1 changed files with 26 additions and 8 deletions
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@ -44,10 +44,11 @@
</ol></li>
<li><a href="#micro">The Low Level Issues</a>
<ol>
<li><a href="#hl_assert">Assert Liberally</a></li>
<li><a href="#hl_ns_std">Do not use 'using namespace std'</a></li>
<li><a href="#hl_preincrement">Prefer Preincrement</a></li>
<li><a href="#hl_avoidendl">Avoid <tt>std::endl</tt></a></li>
<li><a href="#ll_assert">Assert Liberally</a></li>
<li><a href="#ll_ns_std">Do not use 'using namespace std'</a></li>
<li><a href="#ll_virtual_anch">Provide a virtual method anchor for clases in headers</a></li>
<li><a href="#ll_preincrement">Prefer Preincrement</a></li>
<li><a href="#ll_avoidendl">Avoid <tt>std::endl</tt></a></li>
</ol></li>
</ol></li>
<li><a href="#seealso">See Also</a></li>
@ -489,7 +490,7 @@ class itself... just make them private (or protected), and all is well.</p>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="hl_assert">Assert Liberally</a>
<a name="ll_assert">Assert Liberally</a>
</div>
<div class="doc_text">
@ -537,7 +538,7 @@ assert(isa&lt;PHINode&gt;(Succ-&gt;front()) &amp;&amp; "Only works on PHId BBs!"
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="hl_ns_std">Do not use 'using namespace std'</a>
<a name="ll_ns_std">Do not use 'using namespace std'</a>
</div>
<div class="doc_text">
@ -572,7 +573,24 @@ namespace (and its parents), but should not use any others.</p>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="hl_preincrement">Prefer Preincrement</a>
<a name="ll_virtual_anch">Provide a virtual method anchor for clases in headers</a>
</div>
<div class="doc_text">
<p>If a class is defined in a header file and has a v-table (either it has
virtual methods or it derives from classes with virtual methods), it must
always have at least one out-of-line virtual method in the class. Without
this, the compiler will copy the vtable and RTTI into every .o file that
#includes the header, bloating .o file sizes and increasing link times.
</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="ll_preincrement">Prefer Preincrement</a>
</div>
<div class="doc_text">
@ -592,7 +610,7 @@ get in the habit of always using preincrement, and you won't have a problem.</p>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="hl_avoidendl">Avoid <tt>std::endl</tt></a>
<a name="ll_avoidendl">Avoid <tt>std::endl</tt></a>
</div>
<div class="doc_text">