Try to fix the build for C++ standard libraries missing std::map::emplace

llvm-svn: 243899
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 497b497..d1d3792 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -2609,9 +2609,8 @@
     if (!F) {
       // Make a global variable as a placeholder for this reference.
       GlobalValue *&FwdRef =
-          ForwardRefBlockAddresses.emplace(std::piecewise_construct,
-                                           std::forward_as_tuple(std::move(Fn)),
-                                           std::forward_as_tuple())
+          ForwardRefBlockAddresses.insert(std::make_pair, std::move(Fn),
+                                          std::map<ValID, GlobalValue *>())
               .first->second.insert(std::make_pair(std::move(Label), nullptr))
               .first->second;
       if (!FwdRef)
diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
index acbf6f9..dbbb97a 100644
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -67,12 +67,12 @@
     std::unique_ptr<Constant *[]> ConstantStructElts;
 
     ValID() = default;
-    ValID(ValID &&RHS)
+    ValID(const ValID &RHS)
         : Kind(RHS.Kind), Loc(RHS.Loc), UIntVal(RHS.UIntVal), FTy(RHS.FTy),
-          StrVal(std::move(RHS.StrVal)), StrVal2(std::move(RHS.StrVal2)),
-          APSIntVal(std::move(RHS.APSIntVal)),
-          APFloatVal(std::move(RHS.APFloatVal)), ConstantVal(RHS.ConstantVal),
-          ConstantStructElts(std::move(RHS.ConstantStructElts)) {}
+          StrVal(RHS.StrVal), StrVal2(RHS.StrVal2), APSIntVal(RHS.APSIntVal),
+          APFloatVal(RHS.APFloatVal), ConstantVal(RHS.ConstantVal) {
+      assert(!RHS.ConstantStructElts);
+    }
 
     bool operator<(const ValID &RHS) const {
       if (Kind == t_LocalID || Kind == t_GlobalID)