1 files changed, 27 insertions, 34 deletions

diff --git a/contrib/llvm-project/llvm/include/llvm/ADT/SmallString.h b/contrib/llvm-project/llvm/include/llvm/ADT/SmallString.h
index cd6f2173d04f..5a56321ae492 100644
--- a/contrib/llvm-project/llvm/include/llvm/ADT/SmallString.h
+++ b/contrib/llvm-project/llvm/include/llvm/ADT/SmallString.h
@@ -30,63 +30,56 @@ public:
   /// Initialize from a StringRef.
   SmallString(StringRef S) : SmallVector<char, InternalLen>(S.begin(), S.end()) {}
 
+  /// Initialize by concatenating a list of StringRefs.
+  SmallString(std::initializer_list<StringRef> Refs)
+      : SmallVector<char, InternalLen>() {
+    this->append(Refs);
+  }
+
   /// Initialize with a range.
   template<typename ItTy>
   SmallString(ItTy S, ItTy E) : SmallVector<char, InternalLen>(S, E) {}
 
-  // Note that in order to add new overloads for append & assign, we have to
-  // duplicate the inherited versions so as not to inadvertently hide them.
-
   /// @}
   /// @name String Assignment
   /// @{
 
-  /// Assign from a repeated element.
-  void assign(size_t NumElts, char Elt) {
-    this->SmallVectorImpl<char>::assign(NumElts, Elt);
-  }
-
-  /// Assign from an iterator pair.
-  template<typename in_iter>
-  void assign(in_iter S, in_iter E) {
-    this->clear();
-    SmallVectorImpl<char>::append(S, E);
-  }
+  using SmallVector<char, InternalLen>::assign;
 
   /// Assign from a StringRef.
   void assign(StringRef RHS) {
-    this->clear();
-    SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
+    SmallVectorImpl<char>::assign(RHS.begin(), RHS.end());
   }
 
-  /// Assign from a SmallVector.
-  void assign(const SmallVectorImpl<char> &RHS) {
+  /// Assign from a list of StringRefs.
+  void assign(std::initializer_list<StringRef> Refs) {
     this->clear();
-    SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
+    append(Refs);
   }
 
   /// @}
   /// @name String Concatenation
   /// @{
 
-  /// Append from an iterator pair.
-  template<typename in_iter>
-  void append(in_iter S, in_iter E) {
-    SmallVectorImpl<char>::append(S, E);
-  }
-
-  void append(size_t NumInputs, char Elt) {
-    SmallVectorImpl<char>::append(NumInputs, Elt);
-  }
+  using SmallVector<char, InternalLen>::append;
 
   /// Append from a StringRef.
   void append(StringRef RHS) {
     SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
   }
 
-  /// Append from a SmallVector.
-  void append(const SmallVectorImpl<char> &RHS) {
-    SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
+  /// Append from a list of StringRefs.
+  void append(std::initializer_list<StringRef> Refs) {
+    size_t SizeNeeded = this->size();
+    for (const StringRef &Ref : Refs)
+      SizeNeeded += Ref.size();
+    this->reserve(SizeNeeded);
+    auto CurEnd = this->end();
+    for (const StringRef &Ref : Refs) {
+      this->uninitialized_copy(Ref.begin(), Ref.end(), CurEnd);
+      CurEnd += Ref.size();
+    }
+    this->set_size(SizeNeeded);
   }
 
   /// @}
@@ -280,9 +273,9 @@ public:
   }
 
   // Extra operators.
-  const SmallString &operator=(StringRef RHS) {
-    this->clear();
-    return *this += RHS;
+  SmallString &operator=(StringRef RHS) {
+    this->assign(RHS);
+    return *this;
   }
 
   SmallString &operator+=(StringRef RHS) {