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Add documentation for weak variables

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9001 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2003-10-10 05:01:39 +00:00
parent 2498d67158
commit 25839f02c6
1 changed files with 10 additions and 2 deletions
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docs/LangRef.html
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@ -541,7 +541,15 @@ or the idea of "anonymous namespaces" in C++.<p>
<dd>"<tt>linkonce</tt>" linkage is similar to <tt>internal</tt> linkage, with
the twist that linking together two modules defining the same <tt>linkonce</tt>
globals will cause one of the globals to be discarded. This is typically used
to implement inline functions.<p>
to implement inline functions. Unreferenced <tt>linkonce</tt> globals are
allowed to be discarded.<p>
<a name="linkage_weak">
<dt><tt><b>weak</b></tt>:
<dd>"<tt>weak</tt>" linkage is exactly the same as <tt>linkonce</tt> linkage,
except that unreferenced <tt>weak</tt> globals may not be discarded. This is
used to implement constructs in C such as "<tt>int X;</tt>" at global scope.<p>
<a name="linkage_appending">
<dt><tt><b>appending</b></tt>:
@ -1905,7 +1913,7 @@ arbitrarily complex and require memory allocation, for example.<p>
<address><a href="mailto:sabre@nondot.org">Chris Lattner</a></address>
<!-- Created: Tue Jan 23 15:19:28 CST 2001 -->
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Last modified: Mon Sep 8 13:27:14 CDT 2003
Last modified: Thu Oct 9 23:58:41 CDT 2003
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</font>
</body></html>