diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index c7de182..ba2dcdf 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -406,7 +406,7 @@
   // The highest possible offset is 2^31-1, so CurrentLoadedOffset starts at
   // 2^31.
   CurrentLoadedOffset = 1U << 31U;
-  createInstantiationLoc(SourceLocation(),SourceLocation(),SourceLocation(), 1);
+  createExpansionLoc(SourceLocation(),SourceLocation(),SourceLocation(), 1);
 }
 
 /// getOrCreateContentCache - Create or return a cached ContentCache for the
@@ -518,30 +518,32 @@
 }
 
 SourceLocation
-SourceManager::createMacroArgInstantiationLoc(SourceLocation SpellingLoc,
-                                              SourceLocation ILoc,
-                                              unsigned TokLength) {
+SourceManager::createMacroArgExpansionLoc(SourceLocation SpellingLoc,
+                                          SourceLocation ExpansionLoc,
+                                          unsigned TokLength) {
   InstantiationInfo II =
-    InstantiationInfo::createForMacroArg(SpellingLoc, ILoc);
-  return createInstantiationLocImpl(II, TokLength);
-}
-
-SourceLocation SourceManager::createInstantiationLoc(SourceLocation SpellingLoc,
-                                                     SourceLocation ILocStart,
-                                                     SourceLocation ILocEnd,
-                                                     unsigned TokLength,
-                                                     int LoadedID,
-                                                     unsigned LoadedOffset) {
-  InstantiationInfo II =
-    InstantiationInfo::create(SpellingLoc, ILocStart, ILocEnd);
-  return createInstantiationLocImpl(II, TokLength, LoadedID, LoadedOffset);
+    InstantiationInfo::createForMacroArg(SpellingLoc, ExpansionLoc);
+  return createExpansionLocImpl(II, TokLength);
 }
 
 SourceLocation
-SourceManager::createInstantiationLocImpl(const InstantiationInfo &II,
-                                          unsigned TokLength,
-                                          int LoadedID,
-                                          unsigned LoadedOffset) {
+SourceManager::createExpansionLoc(SourceLocation SpellingLoc,
+                                  SourceLocation ExpansionLocStart,
+                                  SourceLocation ExpansionLocEnd,
+                                  unsigned TokLength,
+                                  int LoadedID,
+                                  unsigned LoadedOffset) {
+  InstantiationInfo II =
+    InstantiationInfo::create(SpellingLoc, ExpansionLocStart,
+                              ExpansionLocEnd);
+  return createExpansionLocImpl(II, TokLength, LoadedID, LoadedOffset);
+}
+
+SourceLocation
+SourceManager::createExpansionLocImpl(const InstantiationInfo &II,
+                                      unsigned TokLength,
+                                      int LoadedID,
+                                      unsigned LoadedOffset) {
   if (LoadedID < 0) {
     assert(LoadedID != -1 && "Loading sentinel FileID");
     unsigned Index = unsigned(-LoadedID) - 2;
diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index faa1d9d..f5aa134 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -187,9 +187,9 @@
 
   // Set the SourceLocation with the remapping information.  This ensures that
   // GetMappedTokenLoc will remap the tokens as they are lexed.
-  L->FileLoc = SM.createInstantiationLoc(SM.getLocForStartOfFile(SpellingFID),
-                                         ExpansionLocStart,
-                                         ExpansionLocEnd, TokLen);
+  L->FileLoc = SM.createExpansionLoc(SM.getLocForStartOfFile(SpellingFID),
+                                     ExpansionLocStart,
+                                     ExpansionLocEnd, TokLen);
 
   // Ensure that the lexer thinks it is inside a directive, so that end \n will
   // return an EOD token.
@@ -914,7 +914,7 @@
   std::pair<SourceLocation,SourceLocation> II =
     SM.getImmediateExpansionRange(FileLoc);
 
-  return SM.createInstantiationLoc(SpellingLoc, II.first, II.second, TokLen);
+  return SM.createExpansionLoc(SpellingLoc, II.first, II.second, TokLen);
 }
 
 /// getSourceLocation - Return a source location identifier for the specified
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index 52b1fd2..5a88e5f 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -284,8 +284,8 @@
     // Update the tokens location to include both its expansion and physical
     // locations.
     SourceLocation Loc =
-      SourceMgr.createInstantiationLoc(Identifier.getLocation(), ExpandLoc,
-                                       ExpansionEnd,Identifier.getLength());
+      SourceMgr.createExpansionLoc(Identifier.getLocation(), ExpandLoc,
+                                   ExpansionEnd,Identifier.getLength());
     Identifier.setLocation(Loc);
 
     // If this is a disabled macro or #define X X, we must mark the result as
@@ -875,18 +875,18 @@
       ComputeDATE_TIME(DATELoc, TIMELoc, *this);
     Tok.setKind(tok::string_literal);
     Tok.setLength(strlen("\"Mmm dd yyyy\""));
-    Tok.setLocation(SourceMgr.createInstantiationLoc(DATELoc, Tok.getLocation(),
-                                                     Tok.getLocation(),
-                                                     Tok.getLength()));
+    Tok.setLocation(SourceMgr.createExpansionLoc(DATELoc, Tok.getLocation(),
+                                                 Tok.getLocation(),
+                                                 Tok.getLength()));
     return;
   } else if (II == Ident__TIME__) {
     if (!TIMELoc.isValid())
       ComputeDATE_TIME(DATELoc, TIMELoc, *this);
     Tok.setKind(tok::string_literal);
     Tok.setLength(strlen("\"hh:mm:ss\""));
-    Tok.setLocation(SourceMgr.createInstantiationLoc(TIMELoc, Tok.getLocation(),
-                                                     Tok.getLocation(),
-                                                     Tok.getLength()));
+    Tok.setLocation(SourceMgr.createExpansionLoc(TIMELoc, Tok.getLocation(),
+                                                 Tok.getLocation(),
+                                                 Tok.getLength()));
     return;
   } else if (II == Ident__INCLUDE_LEVEL__) {
     // Compute the presumed include depth of this token.  This can be affected
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index fbdb903..a5e86bd 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -335,8 +335,7 @@
   SourceLocation Loc = ScratchBuf->getToken(Buf, Len, DestPtr);
 
   if (ExpansionLoc.isValid())
-    Loc = SourceMgr.createInstantiationLoc(Loc, ExpansionLoc,
-                                           ExpansionLoc, Len);
+    Loc = SourceMgr.createExpansionLoc(Loc, ExpansionLoc, ExpansionLoc, Len);
   Tok.setLocation(Loc);
 
   // If this is a raw identifier or a literal token, set the pointer data.
diff --git a/lib/Lex/TokenLexer.cpp b/lib/Lex/TokenLexer.cpp
index 22f94e0..985b2a0 100644
--- a/lib/Lex/TokenLexer.cpp
+++ b/lib/Lex/TokenLexer.cpp
@@ -57,10 +57,10 @@
     // creating separate source location entries for each token.
     SourceLocation macroStart = SM.getExpansionLoc(Tokens[0].getLocation());
     MacroDefStartInfo = SM.getDecomposedLoc(macroStart);
-    MacroExpansionStart = SM.createInstantiationLoc(macroStart,
-                                              ExpandLocStart,
-                                              ExpandLocEnd,
-                                              Macro->getDefinitionLength(SM));
+    MacroExpansionStart = SM.createExpansionLoc(macroStart,
+                                                ExpandLocStart,
+                                                ExpandLocEnd,
+                                                Macro->getDefinitionLength(SM));
   }
 
   // If this is a function-like macro, expand the arguments and change
@@ -231,9 +231,9 @@
                  "Expected arg identifier to come from definition");
           for (unsigned i = FirstResult, e = ResultToks.size(); i != e; ++i) {
             Token &Tok = ResultToks[i];
-            Tok.setLocation(SM.createMacroArgInstantiationLoc(Tok.getLocation(),
-                                                              curInst,
-                                                              Tok.getLength()));
+            Tok.setLocation(SM.createMacroArgExpansionLoc(Tok.getLocation(),
+                                                          curInst,
+                                                          Tok.getLength()));
           }
         }
 
@@ -289,9 +289,9 @@
         for (unsigned i = ResultToks.size() - NumToks, e = ResultToks.size();
                i != e; ++i) {
           Token &Tok = ResultToks[i];
-          Tok.setLocation(SM.createMacroArgInstantiationLoc(Tok.getLocation(),
-                                                            curInst,
-                                                            Tok.getLength()));
+          Tok.setLocation(SM.createMacroArgExpansionLoc(Tok.getLocation(),
+                                                        curInst,
+                                                        Tok.getLength()));
         }
       }
 
@@ -421,10 +421,10 @@
                                         MacroStartSLocOffset)) {
     SourceLocation instLoc;
     if (Tok.is(tok::comment)) {
-      instLoc = SM.createInstantiationLoc(Tok.getLocation(),
-                                          ExpandLocStart,
-                                          ExpandLocEnd,
-                                          Tok.getLength());
+      instLoc = SM.createExpansionLoc(Tok.getLocation(),
+                                      ExpandLocStart,
+                                      ExpandLocEnd,
+                                      Tok.getLength());
     } else {
       instLoc = getMacroExpansionLocation(Tok.getLocation());
       assert(instLoc.isValid() &&
@@ -574,8 +574,7 @@
           // information so that the user knows where it came from.
           SourceManager &SM = PP.getSourceManager();
           SourceLocation Loc =
-            SM.createInstantiationLoc(PasteOpLoc, ExpandLocStart,
-                                      ExpandLocEnd, 2);
+            SM.createExpansionLoc(PasteOpLoc, ExpandLocStart, ExpandLocEnd, 2);
           // If we're in microsoft extensions mode, downgrade this from a hard
           // error to a warning that defaults to an error.  This allows
           // disabling it.
@@ -616,10 +615,10 @@
     assert(pasteLocInst.isValid() &&
            "Expected '##' to come from definition");
 
-    Tok.setLocation(SM.createInstantiationLoc(Tok.getLocation(),
-                                              pasteLocInst,
-                                              pasteLocInst,
-                                              Tok.getLength()));
+    Tok.setLocation(SM.createExpansionLoc(Tok.getLocation(),
+                                          pasteLocInst,
+                                          pasteLocInst,
+                                          Tok.getLength()));
   }
 
   // Now that we got the result token, it will be subject to expansion.  Since
diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index 8b4167d..14ba59c 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -1359,7 +1359,7 @@
 
   case SM_SLOC_EXPANSION_ENTRY: {
     SourceLocation SpellingLoc = ReadSourceLocation(*F, Record[1]);
-    SourceMgr.createInstantiationLoc(SpellingLoc,
+    SourceMgr.createExpansionLoc(SpellingLoc,
                                      ReadSourceLocation(*F, Record[2]),
                                      ReadSourceLocation(*F, Record[3]),
                                      Record[4],