Reapply r91392, it was only unmasking the bug, and since TOT is still broken having it reverted does no good.

llvm-svn: 91560

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index d53de347a55..b2ee8bb179e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -20,10 +20,16 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetSubtarget.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
+cl::opt<bool>
+DisableInstScheduling("disable-inst-scheduling",
+                      cl::init(false),
+                      cl::desc("Disable instruction scheduling"));
+
 ScheduleDAGSDNodes::ScheduleDAGSDNodes(MachineFunction &mf)
   : ScheduleDAG(mf) {
 }