[dmd-internals] [D-Programming-Language/dmd] ff762d: fold in D2 changes

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: ff762d7fd1ca0804131a63231cdf2bef35895f37
      https://github.com/D-Programming-Language/dmd/commit/ff762d7fd1ca0804131a63231cdf2bef35895f37
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-09-25 (Fri, 25 Sep 2015)

  Changed paths:
    M src/backend/optabgen.c

  Log Message:
  -----------
  fold in D2 changes