-<dt>Add support to the C backend in <tt>lib/Target/CBackend/</tt></dt>
-
-<dd>Depending on the intrinsic, there are a few ways to implement this. For
-most intrinsics, it makes sense to add code to lower your intrinsic in
-<tt>LowerIntrinsicCall</tt> in <tt>lib/CodeGen/IntrinsicLowering.cpp</tt>.
-Second, if it makes sense to lower the intrinsic to an expanded sequence of C
-code in all cases, just emit the expansion in <tt>visitCallInst</tt> in
-<tt>Writer.cpp</tt>. If the intrinsic has some way to express it with GCC
-(or any other compiler) extensions, it can be conditionally supported based on
-the compiler compiling the CBE output (see <tt>llvm.prefetch</tt> for an
-example).
-Third, if the intrinsic really has no way to be lowered, just have the code
-generator emit code that prints an error message and calls abort if executed.
-</dd>