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<p class="MsoNormal">If there is a design document describing the codegen backend to tblgen, and the type-inference system it uses, I would appreciate a pointer to it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">all I can find online, like “TableGen BackEnds” and “Writing an LLVM Backend”, don’t go into these details, but I seem to need a deeper understanding,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For example when I add “i32:” to an internal node of pattern tree, for example “i32:shl” in<o:p></o:p></p>
<p class="MsoNormal"> [(set i32:$dst (i32:shl i32:rs1, i32:rs2))]<o:p></o:p></p>
<p class="MsoNormal">Then I get the error “expected variable name in dag operator”, and a source cursor pointing to the “shl”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am able to jump to all kinds of conclusions about the nature of this “error”, but don’t have any hard facts to go by.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--Peter.<o:p></o:p></p>
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