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Mention how to create overloaded intrinsics.

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Reid Spencer 2007-04-01 07:44:52 +00:00
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docs/ExtendingLLVM.html
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@ -87,7 +87,10 @@ function and then be turned into an instruction if warranted.</p>
<li><tt>llvm/include/llvm/Intrinsics*.td</tt>:
Add an entry for your intrinsic. Describe its memory access characteristics
for optimization (this controls whether it will be DCE'd, CSE'd, etc).</li>
for optimization (this controls whether it will be DCE'd, CSE'd, etc). Note
that any intrinsic using the <tt>llvm_int_ty</tt> type for an argument will
be deemed by <tt>tblgen</tt> as overloaded and the corresponding suffix
will be required on the intrinsic's name.</li>
<li><tt>llvm/lib/Analysis/ConstantFolding.cpp</tt>: If it is possible to
constant fold your intrinsic, add support to it in the