other dominance stuff.  Patch contributed by Casey Carter

llvm-svn: 4457

llvm-svn: 4081

llvm-svn: 4075

    * Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.

llvm-svn: 4002

- break-crit-edges pass does not invalidate loop-preheader pass.

llvm-svn: 3944

   removing it from Transforms/Local.h and from Transforms/Utils/*

llvm-svn: 3910

    by other passes.  Make BCE pass be in anonymous namespace now.

llvm-svn: 3907

Add new BreakCriticalEdges pass

llvm-svn: 3903