Change createPostRAScheduler so it can be turned off at llc -O1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84273 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index 4e713a6..e58a9ca 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -323,7 +323,7 @@
 
   // Second pass scheduler.
   if (OptLevel != CodeGenOpt::None) {
-    PM.add(createPostRAScheduler());
+    PM.add(createPostRAScheduler(OptLevel));
     printAndVerify(PM);
   }