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Hi,
� I have digged into the middle end of� both LLVM and GCC a while.And I always try to compare them from the view of data structure anr algorithm.I want the opinions of you experts.Can you guy talk about this?To be precise, I want to compare the design of the tree(GCC) and IR,and the design of the RTL(GCC) and (DAG and Machine Instructions). I want to know what is the advantages and disadvantages these design have brought in,what kind of the troubles they have made,and hiw they solve.

lin zuojian