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> > What do you think about this approach? Whould it be interesting to > implement something like that for LLVM? May be you already have > considered something like that? Are there any plans to it? We have talked about whole function instruction selection but does not have immediate plan to implement it. If we were to implement it today, it would probably be done on DAGs with

Hi, LLVM already uses dynamic-programming based optimal pattern matching selectors for some of the target architectures. But as far as I know, the code is first converted out of the SSA form, before the selection process takes place. The same approach is used by many other compilers. But there is an article from Erik Eckstein, where a different method is proposed. In the described approach, the