search for: selectiondag_intro

Hi all, Just getting started with LLVM, and trying to write a back end for a toy hypothetical processor. I'm using llvm-gcc with -emit-llvm to see the LLVM code. The LLVM code is very well-documented at http://llvm.org/docs/LangRef.html. However, I'm looking for equivalent documentation for SelectionDAGs. As I understand it, instructions in the target specification get matched against the

Hi, if I want to know how switch instructions are handled in the backend, where do I have to look first? I'm not familiar with the backend framework and I couldn't figure out the interface between the LLVM instruction 'SwitchInst' and whatever there is in the backend. I would be very happy about every hint where I have to look to find the entry point of switch instructions in the