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...d it too hacky and artificial. Thanks for your patience. (PS: sorry for the dup, but i sent the reply to your personal account instead of to the list.) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100902/fc0dfd6b/attachment-0001.html>

Thanks for the reply Jakob, good to know that my assumption that LLVM would split regs into smaller subregs is confirmed to be too optimistic. It would be nice if this case could be handled by LLVM, basically trying to split regs and see if patterns match with the splitted regs before giving an error. About the transformation you mentioned in the selection DAG phase, that was my initial question,