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Hi Susan, You may find the PBQP allocator implementation useful as a reference to what's involved in adding a new allocator to LLVM. It's located in lib/CodeGen/RegAllocPBQP.cpp, with supporting files in the lib/CodeGen/ PBQP directory. I'm no expert on the LLVM register allocation interfaces, so I'll defer to those who are regarding the specifics of your questions. -Jim

I'm using LLVM for a compiler course, and I'd like to have my students implement a graph-coloring register allocator. I'm having a lot of trouble figuring out how this should be done. Is there anyone who has written an LLVM register allocator who would be willing to help me understand the basic ideas? I understand the algorithm, it's LLVM that I don't understand. For

...Looking at RegAllocPBQP.cpp is probably the best way to get your head around how those components are used by register allocation. Regards, Lang Hames. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20091019/732ab805/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: RegAllocDemo.cpp Type: application/octet-stream Size: 5744 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20091019/732ab805/attachment.obj>