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Hello LLVM, My target has a complex relaxation hierarchy. Perhaps a modest TableGen extension would help consolidate most of the work involved in choosing a relaxed opcode. I also notice the x86 relaxation code with a comment wondering if TableGen could improve life. Does the following outline sound interesting? 1) Add a new field of type 'Instruction' to the Instruction class called

Thanks for the quick answer Bruce. So far as I can tell (from a quick read), this is really for integrated assemblers/disassemblers - but we use an external assembler. When invoking clang we would provide ‘-mcpu=chip_v1’ or ‘-mcpu=chip_v2’, and the mnemonic ‘LD32’ is only valid when compiling for ‘chip_v1’, while ‘LD.32’ is only valid when compiling for ‘chip_v2’. But I will study the