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| author | Andrew Trick <atrick@apple.com> | 2012-02-22 06:08:11 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-02-22 06:08:11 +0000 |
| commit | 46cc9a4aaa1c3c110ba7d925cbba402b769441a5 (patch) | |
| tree | 7f51c4c531db9f7c9dd0b464ca6a8f469ec9db05 /llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp | |
| parent | 760b134ffa8bb88ccc96fc2230ab7e5fa501e921 (diff) | |
| download | bcm5719-llvm-46cc9a4aaa1c3c110ba7d925cbba402b769441a5.tar.gz bcm5719-llvm-46cc9a4aaa1c3c110ba7d925cbba402b769441a5.zip | |
Initialize SUnits before DAG building.
Affect on SD scheduling and postRA scheduling:
Printing the DAG will display the nodes in top-down topological order.
This matches the order within the MBB and makes my life much easier in general.
Affect on misched:
We don't need to track virtual register uses at all. This is awesome.
I also intend to rely on the SUnit ID as a topo-sort index. So if A < B then we cannot have an edge B -> A.
llvm-svn: 151135
Diffstat (limited to 'llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp index 5c325396dbe..0751229f4e0 100644 --- a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -427,6 +427,8 @@ BreakAntiDependencies(const std::vector<SUnit>& SUnits, // Keep a map of the MachineInstr*'s back to the SUnit representing them. // This is used for updating debug information. + // + // FIXME: Replace this with the existing map in ScheduleDAGInstrs::MISUnitMap DenseMap<MachineInstr*,const SUnit*> MISUnitMap; // Find the node at the bottom of the critical path. |
