<div>
<ul>
-
- <li>The X86-64 backend does not yet support the LLVM IR instruction
- <tt>va_arg</tt>. Currently, front-ends support variadic argument
- constructs on X86-64 by lowering them manually.</li>
-
- <li>Windows x64 (aka Win64) code generator has a few issues.
- <ul>
- <li>On mingw-w64, you will see unresolved symbol <tt>__chkstk</tt> due
- to <a href="http://llvm.org/bugs/show_bug.cgi?id=8919">Bug 8919</a>.
- It is fixed
- in <a href="http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20110321/118499.html">r128206</a>.</li>
-
- <li>Miss-aligned MOVDQA might crash your program. It is due to
- <a href="http://llvm.org/bugs/show_bug.cgi?id=9483">Bug 9483</a>, lack
- of handling aligned internal globals.</li>
- </ul>
- </li>
-
+ <li>The X86-64 backend <a href="http://llvm.org/PR1740">does not yet support
+ the <tt>va_arg</tt> LLVM IR instruction</a>. Currently, front-ends support
+ variadic argument constructs on X86-64 by lowering them manually.</li>
</ul>
</div>