[PATCH] ScheduleDAGInstrs: Optionally respect lanemasks when creating dependencies.

[Matthias Braun]

Hi qcolombet, atrick, tstellarAMD,

This changes the dependency calculation logic to a simple scheme where
we pickup all uses/defs in a reverse walk over the basic block. This
makes it easier to differentiate uses/defs with different lanemasks.
It also avoids the need for LiveInterval queries during dependency
construction, so the LiveIntervals reference can be moved upwards to the
MachineScheduler.

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9068

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

EMAIL PREFERENCES
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