Revert "Remove the explicit SDNodeIterator::operator= in favor of the implicit default"

Accidentally committed a few more of these cleanup changes than
intended. Still breaking these out & tidying them up.

This reverts commit r231135.

llvm-svn: 231136

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/LiveStackAnalysis.cpp b/llvm/lib/CodeGen/LiveStackAnalysis.cpp
index 5c9c679e97b..8a6ac251ab2 100644
--- a/llvm/lib/CodeGen/LiveStackAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveStackAnalysis.cpp
@@ -61,10 +61,8 @@ LiveStacks::getOrCreateInterval(int Slot, const TargetRegisterClass *RC) {
   assert(Slot >= 0 && "Spill slot indice must be >= 0");
   SS2IntervalMap::iterator I = S2IMap.find(Slot);
   if (I == S2IMap.end()) {
-    I = S2IMap.emplace(std::piecewise_construct, std::forward_as_tuple(Slot),
-                       std::forward_as_tuple(
-                           TargetRegisterInfo::index2StackSlot(Slot), 0.0F))
-            .first;
+    I = S2IMap.insert(I, std::make_pair(Slot,
+            LiveInterval(TargetRegisterInfo::index2StackSlot(Slot), 0.0F)));
     S2RCMap.insert(std::make_pair(Slot, RC));
   } else {
     // Use the largest common subclass register class.