Remove the capture, serialization, and deserialization of comment

ranges as part of the ASTContext. This code is not and was never used,
but contributes ~250k to the size of the Cocoa.h precompiled
header.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99007 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 2 insertions, 33 deletions

diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 7d8fee94f0..e659ff047d 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -328,7 +328,7 @@ PCHReader::PCHReader(Preprocessor &PP, ASTContext *Context,
     MethodPoolLookupTable(0), MethodPoolLookupTableData(0),
     TotalSelectorsInMethodPool(0), SelectorOffsets(0),
     TotalNumSelectors(0), MacroDefinitionOffsets(0), 
-    NumPreallocatedPreprocessingEntities(0), Comments(0), NumComments(0), 
+    NumPreallocatedPreprocessingEntities(0),  
     isysroot(isysroot), NumStatHits(0), NumStatMisses(0),
     NumSLocEntriesRead(0), NumStatementsRead(0),
     NumMacrosRead(0), NumMethodPoolSelectorsRead(0), NumMethodPoolMisses(0),
@@ -346,7 +346,7 @@ PCHReader::PCHReader(SourceManager &SourceMgr, FileManager &FileMgr,
     MethodPoolLookupTable(0), MethodPoolLookupTableData(0),
     TotalSelectorsInMethodPool(0), SelectorOffsets(0),
     TotalNumSelectors(0), MacroDefinitionOffsets(0), 
-    NumPreallocatedPreprocessingEntities(0), Comments(0), NumComments(0), 
+    NumPreallocatedPreprocessingEntities(0),  
     isysroot(isysroot), NumStatHits(0), NumStatMisses(0),
     NumSLocEntriesRead(0), NumStatementsRead(0),
     NumMacrosRead(0), NumMethodPoolSelectorsRead(0), NumMethodPoolMisses(0),
@@ -1503,11 +1503,6 @@ PCHReader::ReadPCHBlock() {
       MaybeAddSystemRootToFilename(OriginalFileName);
       break;
 
-    case pch::COMMENT_RANGES:
-      Comments = (SourceRange *)BlobStart;
-      NumComments = BlobLen / sizeof(SourceRange);
-      break;
-
     case pch::VERSION_CONTROL_BRANCH_REVISION: {
       const std::string &CurBranch = getClangFullRepositoryVersion();
       llvm::StringRef PCHBranch(BlobStart, BlobLen);
@@ -1938,12 +1933,6 @@ void PCHReader::ReadPreprocessedEntities() {
   ReadDefinedMacros();
 }
 
-void PCHReader::ReadComments(std::vector<SourceRange> &Comments) {
-  Comments.resize(NumComments);
-  std::copy(this->Comments, this->Comments + NumComments,
-            Comments.begin());
-}
-
 /// \brief Read and return the type at the given offset.
 ///
 /// This routine actually reads the record corresponding to the type
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index df41ca1e59..4752cd3ea6 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -564,7 +564,6 @@ void PCHWriter::WriteBlockInfoBlock() {
   RECORD(SOURCE_LOCATION_PRELOADS);
   RECORD(STAT_CACHE);
   RECORD(EXT_VECTOR_DECLS);
-  RECORD(COMMENT_RANGES);
   RECORD(VERSION_CONTROL_BRANCH_REVISION);
   RECORD(UNUSED_STATIC_FUNCS);
   RECORD(MACRO_DEFINITION_OFFSETS);
@@ -1306,24 +1305,6 @@ void PCHWriter::WritePreprocessor(const Preprocessor &PP) {
   }
 }
 
-void PCHWriter::WriteComments(ASTContext &Context) {
-  using namespace llvm;
-
-  if (Context.Comments.empty())
-    return;
-
-  BitCodeAbbrev *CommentAbbrev = new BitCodeAbbrev();
-  CommentAbbrev->Add(BitCodeAbbrevOp(pch::COMMENT_RANGES));
-  CommentAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
-  unsigned CommentCode = Stream.EmitAbbrev(CommentAbbrev);
-
-  RecordData Record;
-  Record.push_back(pch::COMMENT_RANGES);
-  Stream.EmitRecordWithBlob(CommentCode, Record,
-                            (const char*)&Context.Comments[0],
-                            Context.Comments.size() * sizeof(SourceRange));
-}
-
 //===----------------------------------------------------------------------===//
 // Type Serialization
 //===----------------------------------------------------------------------===//
@@ -2088,7 +2069,6 @@ void PCHWriter::WritePCH(Sema &SemaRef, MemorizeStatCalls *StatCalls,
   if (StatCalls && !isysroot)
     WriteStatCache(*StatCalls, isysroot);
   WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot);
-  WriteComments(Context);
   // Write the record of special types.
   Record.clear();