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| author | Andrew Trick <atrick@apple.com> | 2013-01-24 02:09:57 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2013-01-24 02:09:57 +0000 |
| commit | db4170697f866dc8620946c77828ef0804996c3d (patch) | |
| tree | d60c982e7dda6157bc1e7413b3820742d658d3bb /lib/CodeGen | |
| parent | 66658dd9a1ffe00a5f6e0afca7afb16ec6704ed3 (diff) | |
| download | external_llvm-db4170697f866dc8620946c77828ef0804996c3d.zip external_llvm-db4170697f866dc8620946c77828ef0804996c3d.tar.gz external_llvm-db4170697f866dc8620946c77828ef0804996c3d.tar.bz2 | |
MachineScheduler: enable biasCriticalPath for all DAGs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173318 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/MachineScheduler.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineScheduler.cpp b/lib/CodeGen/MachineScheduler.cpp index c949266..b9198e8 100644 --- a/lib/CodeGen/MachineScheduler.cpp +++ b/lib/CodeGen/MachineScheduler.cpp @@ -563,6 +563,10 @@ void ScheduleDAGMI::releaseRoots() { for (std::vector<SUnit>::iterator I = SUnits.begin(), E = SUnits.end(); I != E; ++I) { SUnit *SU = &(*I); + + // Order predecessors so DFSResult follows the critical path. + SU->biasCriticalPath(); + // A SUnit is ready to top schedule if it has no predecessors. if (!I->NumPredsLeft && SU != &EntrySU) SchedImpl->releaseTopNode(SU); |