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document module-level inline asm support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25561 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2006-01-23 23:23:47 +00:00
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docs/LangRef.html
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@ -23,7 +23,8 @@
<li><a href="#linkage">Linkage Types</a></li>
<li><a href="#callingconv">Calling Conventions</a></li>
<li><a href="#globalvars">Global Variables</a></li>
<li><a href="#functionstructure">Function Structure</a></li>
<li><a href="#functionstructure">Functions</a></li>
<li><a href="#moduleasm">Module-Level Inline Assembly</a></li>
</ol>
</li>
<li><a href="#typesystem">Type System</a>
@ -580,6 +581,34 @@ a power of 2.</p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="moduleasm">Module-Level Inline Assembly</a></li>
</div>
<div class="doc_text">
<p>
Modules may contain "module-level inline asm" blocks, which corresponds to the
GCC "file scope inline asm" blocks. These blocks are internally concatenated by
LLVM and treated as a single unit, but may be separated in the .ll file if
desired. The syntax is very simple:
</p>
<div class="doc_code"><pre>
asm "inline asm code goes here"
asm "more can go here"
</pre></div>
<p>The strings can contain any character by escaping non-printable characters.
The escape sequence used is simply "\xx" where "xx" is the two digit hex code
for the number.
</p>
<p>
The inline asm code is simply printed to the machine code .s file when
assembly code is generated.
</p>
</div>
<!-- *********************************************************************** -->