Hi, I currently write a tool to parse the LLVM bytecode file (.bc file). So I have some very basic questions: - First, about the Abbreviation ID ( "0"=END_BLOCK, "1"=ENTER_SUBBLOCK...): how to read these ID from the file stream ? I mean, I don't know, how many bit length they are. It doesn't exist on the document. - Second, how is the order to read the bytecode ? For example 4 bytes after the LLVM IR magic nr.: 21 0C 00 00 It describes the MODULE_BLOCK with its parameters, actually. But I don't know how to extract them from those bytes. I hope that somebody can help me answer these questions. Thanks and Regards, Quang