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...ce i cant continue writing the backend until this issue is resolved. I think this case should be handled by all register allocators implemented in LLVM, so maybe it can be factored out before using an specific allocation algorithm. I have noticed that some changes have been done in all registerinfo.tdbackend files concerning subreg classes and indices since v2.7, do these changes fix this problem or they didnt have any functional changes? Thanks. 2010/8/31 Jeff Kunkel <jdkunk3 at gmail.com> > Hi, I don't know if anyone else has responded to your question, but I am > currently in deve...

Hi, I don't know if anyone else has responded to your question, but I am currently in development of a register allocator. Thank you for bringing up the fact that sub-register classes may be larger than their super-register. If this remains the case, I for one will write a transform for my allocator which will make the 16 bit register the super-register with the 8bit as the sub. At least for

Hello everbody, This is my first email to the list, and hope to write more as i get more involved in LLVM. I'm currently writing a backend for a 8 bit microcontroller, and i have arrived to a point where i need to take a design decision in order to continue the development. Some background information: The microcontroller only has 8bit registers, however it has some special instructions that