RegAllocGreedy: Remove an unhelpful auto, and don't use a reference

diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 6646380ba2119ab30c1c6b3306a62c2eb617dccd..3f58afca474707f941e1a05eba1e03c628ed2915 100644 (file)
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -2133,7 +2133,7 @@ RAGreedy::tryInstructionSplit(LiveInterval &VirtReg, AllocationOrder &Order,
   // the constraints on the virtual register.
   // Otherwise, splitting just inserts uncoalescable copies that do not help
   // the allocation.
-  for (const auto &Use : Uses) {
+  for (const SlotIndex Use : Uses) {
     if (const MachineInstr *MI = Indexes->getInstructionFromIndex(Use))
       if (MI->isFullCopy() ||
           SuperRCNumAllocatableRegs ==