Disable DFSResult for ConvergingScheduler.

For now, just save the compile time since the ConvergingScheduler
heuristics don't use this analysis. We'll probably enable it later
after compile-time investigation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178822 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachineScheduler.cpp b/lib/CodeGen/MachineScheduler.cpp
index c621ca96bf5d5be7265a5ba7e031e47be4db5282..ed6b9861dcfb4befa85b818c9a4997290a77e9cd 100644 (file)
--- a/lib/CodeGen/MachineScheduler.cpp
+++ b/lib/CodeGen/MachineScheduler.cpp
@@ -1243,8 +1243,6 @@ void ConvergingScheduler::initialize(ScheduleDAGMI *dag) {
   Top.init(DAG, SchedModel, &Rem);
   Bot.init(DAG, SchedModel, &Rem);
 
-  DAG->computeDFSResult();
-
   // Initialize resource counts.
 
   // Initialize the HazardRecognizers. If itineraries don't exist, are empty, or