config/stormy16/stormy16.c (combine_bnp): Add code to handle zero_extension and
  lshiftrt insns.
Replace uses of XEXP(...) with either SET_DEST() or SET_SRC()	where
  appropriate.
config/stormy16.stormy16.md (bclrx3, bsetx3): New patterns to handle bp and bn
  insn patterns with a zero_extend rtx inside them.

From-SVN: r90898