There's been some discussion about bitfield access optimisation in the LLVM community. This RFC thread may be interesting to you http://lists.llvm.org/pipermail

There's been some discussion about bitfield access optimisation in the LLVM community. This RFC thread may be interesting to you http://lists.llvm.org/pipermail/llvm-dev/2017-March/110895.html http://lists.llvm.org/pipermail/llvm-dev/2017-March/110895.h.... If you enjoy these sorts of discussions, you might like http://llvmweekly.org/ http://llvmweekly.org/ (disclaimer: I'm the author).