Add combiner patterns to more effectively utilize the BFI (bitfield insert)
instruction for non-constant operands. This includes the case referenced
in the README.txt regarding a bitfield copy.

llvm-svn: 108608
4 files changed
tree: 086f1b8af144042613e88c84d62e491e8fa7273b
  1. clang/
  2. compiler-rt/
  3. libcxx/
  4. lldb/
  5. llvm/