diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp
--- a/llvm/lib/CodeGen/MachineCSE.cpp
+++ b/llvm/lib/CodeGen/MachineCSE.cpp
@@ -782,11 +782,8 @@
 // checks inside ProcessBlockCSE(), not only inside isCSECandidate(). This helps
 // to exclude instrs created by PRE that won't be CSEed later.
 bool MachineCSE::isPRECandidate(MachineInstr *MI) {
-  if (!isCSECandidate(MI) ||
-      MI->isNotDuplicable() ||
-      MI->mayLoad() ||
-      MI->isAsCheapAsAMove() ||
-      MI->getNumDefs() != 1 ||
+  if (!isCSECandidate(MI) || MI->isNotDuplicable() || MI->mayLoad() ||
+      TII->isAsCheapAsAMove(*MI) || MI->getNumDefs() != 1 ||
       MI->getNumExplicitDefs() != 1)
     return false;