Add PPC 440 scheduler and some associated tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142170 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp
index 2bc109c..649a45a 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -53,7 +53,15 @@
   // now, always return a PPC970 recognizer.
   const TargetInstrInfo *TII = TM->getInstrInfo();
   assert(TII && "No InstrInfo?");
-  return new PPCHazardRecognizer970(*TII);
+
+  unsigned Directive = TM->getSubtarget<PPCSubtarget>().getDarwinDirective();
+  if (Directive == PPC::DIR_440) {
+    const InstrItineraryData *II = TM->getInstrItineraryData();
+    return new PPCHazardRecognizer440(II, DAG);
+  }
+  else {
+    return new PPCHazardRecognizer970(*TII);
+  }
 }
 
 unsigned PPCInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,