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...ype to target specific types at code generation time using llc (reconstruct StructLayout). Second, I have been adding two new intrinsic functions as following. 1. "getelement" intrinsic function to load from bitfield of struct type. 2. "setelement" intrinsic function to store to bitfied of struct type. I would like to how do LLVM developers think about above concept. (advices, problems, other solutions etc...) Thanks, Jin-Gu Kang -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101019/193d...

So, I have this Mustek Powermust 600USB (no serial port) here temporarily. It seems to be a hid device. The output from "lsusb -v" and "newhidups -DDDDD" (with "generic" and "vendorid=06da") are (respectively): ----------------------------------------------------------------------------------------------- Bus 001 Device 002: ID 06da:0003 Phoenixtec Power

...What kind of target-specific structure modifications do you have in mind? > Second, I have been adding two new intrinsic functions as following. > 1. "getelement" intrinsic function to load from bitfield of struct type. > 2. "setelement" intrinsic function to store to bitfied of struct type. Bitfields and unions can make the IR a big mess. Analysing the memory layout of the bitfield is not trivial and the low level bit fiddling you have to do is too big and ugly to be in IR. An instruction that knows that would be beneficial (for IR's sake). But there are other iss...