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Document tbaa metadata in LangRef (documentation largely based on

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comments at top of TypeBasedAliasAnalysis.cpp).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143134 91177308-0d34-0410-b5e6-96231b3b80d8
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Peter Collingbourne
2011-10-27 19:19:07 +00:00
parent 32a43cc0fc
commit 249d953ed7
2 changed files with 56 additions and 5 deletions
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@@ -594,10 +594,10 @@ idx3 = (char*) &MyVar + 8
because LLVM has no restrictions on mixing types in addressing, loads or
stores.</p>
<p>It would be possible to add special annotations to the IR, probably using
metadata, to describe a different type system (such as the C type system),
and do type-based aliasing on top of that. This is a much bigger
undertaking though.</p>
<p>LLVM's type-based alias analysis pass uses metadata to describe a different
type system (such as the C type system), and performs type-based aliasing
on top of that. Further details are in the
<a href="LangRef.html#tbaa">language reference</a>.</p>
</div>