swift234

PassManager: Inject the function/module into the Transformation.

Now the pass does not need to know about the pass manager. We also don't have
runOnFunction or runOnModule anymore because the trnasformation knows
which module it is processing. The Pass itself knows how to invalidate the
analysis, based on the injected pass manager that is internal to the
transformation.

Now our DCE transformation looks like this:

class DCE : public SILModuleTransform {
  void run() {
    performSILDeadCodeElimination(getModule());
    invalidateAnalysis(SILAnalysis::InvalidationKind::All);
  }
};





Swift SVN r13598