Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 318e8a30a6f40390cd9175ef9b5c0a44b3ba9098
      https://github.com/D-Programming-Language/dmd/commit/318e8a30a6f40390cd9175ef9b5c0a44b3ba9098
  Author: Walter Bright <walter@walterbright.com>
  Date:   2013-01-14 (Mon, 14 Jan 2013)

  Changed paths:
    M src/backend/cgelem.c
    M src/backend/cod4.c
    M src/backend/code.h
    M src/backend/evalu8.c
    M src/backend/gloop.c
    M src/backend/oper.h
    M src/backend/optabgen.c

  Log Message:
  -----------
  add BT pattern to optimizer