[PATCH] D13205: Refactor live reg tracking for DAG scheduling.

Mon Sep 28 02:29:33 PDT 2015

chfast created this revision.
chfast added a subscriber: llvm-commits.

Some time ago I had to fix some issues around live reg tracking in DAG scheduling. The logic there is quite hard to follow.
After that I tried to extract the logic from the scheduler itself. I'm not sure it is anything better what it was.

If the change is worth anything let me know. I can work a bit more on that.

I'm also considering replacing the array with a map. It contains mostly nulls.

http://reviews.llvm.org/D13205

Files:
  lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp

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