1 files changed, 12 insertions, 2 deletions
diff --git a/include/llvm/ADT/StringRef.h b/include/llvm/ADT/StringRef.h
index d013d05623252..ec0c2849f37ef 100644
--- a/include/llvm/ADT/StringRef.h
+++ b/include/llvm/ADT/StringRef.h
@@ -19,7 +19,7 @@
 #include <utility>
 
 namespace llvm {
-  template<typename T>
+  template <typename T>
   class SmallVectorImpl;
   class APInt;
   class hash_code;
@@ -175,7 +175,7 @@ namespace llvm {
     /// transform one of the given strings into the other. If zero,
     /// the strings are identical.
     unsigned edit_distance(StringRef Other, bool AllowReplacements = true,
-                           unsigned MaxEditDistance = 0);
+                           unsigned MaxEditDistance = 0) const;
 
     /// str - Get the contents as an std::string.
     std::string str() const {
@@ -210,12 +210,18 @@ namespace llvm {
              compareMemory(Data, Prefix.Data, Prefix.Length) == 0;
     }
 
+    /// Check if this string starts with the given \p Prefix, ignoring case.
+    bool startswith_lower(StringRef Prefix) const;
+
     /// Check if this string ends with the given \p Suffix.
     bool endswith(StringRef Suffix) const {
       return Length >= Suffix.Length &&
         compareMemory(end() - Suffix.Length, Suffix.Data, Suffix.Length) == 0;
     }
 
+    /// Check if this string ends with the given \p Suffix, ignoring case.
+    bool endswith_lower(StringRef Suffix) const;
+
     /// @}
     /// @name String Searching
     /// @{
@@ -548,6 +554,10 @@ namespace llvm {
   template <typename T> struct isPodLike;
   template <> struct isPodLike<StringRef> { static const bool value = true; };
 
+  /// Construct a string ref from a boolean.
+  inline StringRef toStringRef(bool B) {
+    return StringRef(B ? "true" : "false");
+  }
 }
 
 #endif