[PATCH] D12816: MachineScheduler: Integrate RegisterPressure classes into PressureTracker

[Matthias Braun via llvm-commits]

MatzeB created this revision.
MatzeB added a reviewer: atrick.
MatzeB added a subscriber: llvm-commits.
MatzeB set the repository for this revision to rL LLVM.

Instead of forcing user to either instantiate a IntervalPressure object
or a RegionPressure object and then using a reference to it in the
PressureTracker constructor, simply integrate both into a union inside
the PressureTracker removing confusion from the interface.

It may even be a good idea to simply remove the variant working with MBB
iterators, as I couldn't find any users of that.

Repository:
  rL LLVM

http://reviews.llvm.org/D12816

Files:
  include/llvm/CodeGen/MachineScheduler.h
  include/llvm/CodeGen/RegisterPressure.h
  lib/CodeGen/RegisterPressure.cpp

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