Andrew Trick 988d06b0e5 SchedDFS: Complete support for nested subtrees.
Maintain separate per-node and per-tree book-keeping.
Track all instructions above a DAG node including nested subtrees.
Seperately track instructions within a subtree.
Record subtree parents.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173426 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-25 06:52:27 +00:00
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2013-01-24 02:09:55 +00:00