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...n my regalloc pass implementation. > May be some sort of analysis update can be performed? Or is it > designed to be used just once per MachineFunction? Hi Roman, I did this a while back when implementing iterative register coalescing. My guess is you're trying to do the same with the Generaslized Graph Coloring algorithm,. It's not easy to accomplish within the LLVM framework. I've made a number of structural changes to our code here and it's in a bit of a state of bitrot due to upstream changes we haven't merged in yet. I got some of this work merged upstream in t...

Hi, I'm implementing some variations of graph-coloring register allocators for LLVM. Many of them perform their phases (e.g. coalescing, graph simplification, spilling, color selection) in an iterative way. Since LLVM provides an implementation of the coalescing in the SimpleRegisterCoalescing class already, I would like to reuse it (even though I could of course create my own coalescing