Fix a memory leak in the hexagon scheduler. We call initialize here more

than once, and the second time through we leaked memory. Found thanks to
the vg-leak bot, but I can't locally reproduce it with valgrind. The
debugger confirms that it is in fact leaking here.

This whole code is totally gross. Why is initialize being called on each
runOnFunction??? Why aren't these OwningPtr<>s, and why aren't their
lifetimes better defined? Anyways, this is just a surgical change to
help out the leak checking bots.

llvm-svn: 187299

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
index b73e58538e0..10bb3e91f2d 100644
--- a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
@@ -208,6 +208,8 @@ void ConvergingVLIWScheduler::initialize(ScheduleDAGMI *dag) {
   Top.HazardRec = TM.getInstrInfo()->CreateTargetMIHazardRecognizer(Itin, DAG);
   Bot.HazardRec = TM.getInstrInfo()->CreateTargetMIHazardRecognizer(Itin, DAG);
 
+  delete Top.ResourceModel;
+  delete Bot.ResourceModel;
   Top.ResourceModel = new VLIWResourceModel(TM, DAG->getSchedModel());
   Bot.ResourceModel = new VLIWResourceModel(TM, DAG->getSchedModel());