Skeleton of post-RA scheduler; doesn't do anything yet.

Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39816 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

@@ -73,9 +73,9 @@ MachinePassRegistry RegisterScheduler::Registry;
 namespace {
   cl::opt<RegisterScheduler::FunctionPassCtor, false,
           RegisterPassParser<RegisterScheduler> >
-  ISHeuristic("sched",
+  ISHeuristic("pre-RA-sched",
               cl::init(&createDefaultScheduler),
-              cl::desc("Instruction schedulers available:"));
+              cl::desc("Instruction schedulers available (before register allocation):"));
 
   static RegisterScheduler
   defaultListDAGScheduler("default", "  Best scheduler for the target",