Add PCH support for #import.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69987 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/HeaderSearch.cpp b/lib/Lex/HeaderSearch.cpp
index 2cc29ec..ddea8e5 100644
--- a/lib/Lex/HeaderSearch.cpp
+++ b/lib/Lex/HeaderSearch.cpp
@@ -377,14 +377,20 @@
 //===----------------------------------------------------------------------===//
 
 
-/// getFileInfo - Return the PerFileInfo structure for the specified
+/// getFileInfo - Return the HeaderFileInfo structure for the specified
 /// FileEntry.
-HeaderSearch::PerFileInfo &HeaderSearch::getFileInfo(const FileEntry *FE) {
+HeaderFileInfo &HeaderSearch::getFileInfo(const FileEntry *FE) {
   if (FE->getUID() >= FileInfo.size())
     FileInfo.resize(FE->getUID()+1);
   return FileInfo[FE->getUID()];
 }  
 
+void HeaderSearch::setHeaderFileInfoForUID(HeaderFileInfo HFI, unsigned UID) {
+  if (UID >= FileInfo.size())
+    FileInfo.resize(UID+1);
+  FileInfo[UID] = HFI;
+}
+
 /// ShouldEnterIncludeFile - Mark the specified file as a target of of a
 /// #include, #include_next, or #import directive.  Return false if #including
 /// the file will have no effect or true if we should include it.
@@ -392,7 +398,7 @@
   ++NumIncluded; // Count # of attempted #includes.
 
   // Get information about this file.
-  PerFileInfo &FileInfo = getFileInfo(File);
+  HeaderFileInfo &FileInfo = getFileInfo(File);
   
   // If this is a #import directive, check that we have not already imported
   // this header.
diff --git a/lib/Lex/PPLexerChange.cpp b/lib/Lex/PPLexerChange.cpp
index 6f61c65..2a05ba3 100644
--- a/lib/Lex/PPLexerChange.cpp
+++ b/lib/Lex/PPLexerChange.cpp
@@ -179,7 +179,7 @@
   if (CurPPLexer) {  // Not ending a macro, ignore it.
     if (const IdentifierInfo *ControllingMacro = 
           CurPPLexer->MIOpt.GetControllingMacroAtEndOfFile()) {
-      // Okay, this has a controlling macro, remember in PerFileInfo.
+      // Okay, this has a controlling macro, remember in HeaderFileInfo.
       if (const FileEntry *FE = 
             SourceMgr.getFileEntryForID(CurPPLexer->getFileID()))
         HeaderInfo.SetFileControllingMacro(FE, ControllingMacro);