Wrap clang modules and pch files in an object file container.

This patch adds ObjectFilePCHContainerOperations uses the LLVM backend
to put the contents of a PCH into a __clangast section inside a COFF, ELF,
or Mach-O object file container.

This is done to facilitate module debugging by makeing it possible to
store the debug info for the types defined by a module alongside the AST.

rdar://problem/20091852

llvm-svn: 241620

3 files changed, 13 insertions, 4 deletions

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index df0ed2ad65d..a5a9bbbb45f 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -29,6 +29,7 @@
 #include "clang/Basic/DiagnosticIDs.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/Version.h"
+#include "clang/CodeGen/ObjectFilePCHContainerOperations.h"
 #include "clang/Frontend/ASTUnit.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
@@ -2876,7 +2877,8 @@ CXIndex clang_createIndex(int excludeDeclarationsFromPCH,
   // registered once.
   (void)*RegisterFatalErrorHandlerOnce;
 
-  CIndexer *CIdxr = new CIndexer();
+  CIndexer *CIdxr =
+      new CIndexer(std::make_shared<ObjectFilePCHContainerOperations>());
   if (excludeDeclarationsFromPCH)
     CIdxr->setOnlyLocalDecls();
   if (displayDiagnostics)
diff --git a/clang/tools/libclang/CMakeLists.txt b/clang/tools/libclang/CMakeLists.txt
index 26f88a97c57..407a5c4d4e7 100644
--- a/clang/tools/libclang/CMakeLists.txt
+++ b/clang/tools/libclang/CMakeLists.txt
@@ -37,9 +37,14 @@ set(SOURCES
   ../../include/clang-c/Index.h
   )
 
+set( LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
+  )
+
 set(LIBS
   clangAST
   clangBasic
+  clangCodeGen
   clangFrontend
   clangIndex
   clangLex
diff --git a/clang/tools/libclang/Makefile b/clang/tools/libclang/Makefile
index 97f663cde47..84914e0f460 100644
--- a/clang/tools/libclang/Makefile
+++ b/clang/tools/libclang/Makefile
@@ -16,19 +16,21 @@ LINK_LIBS_IN_SHARED = 1
 SHARED_LIBRARY = 1
 
 include $(CLANG_LEVEL)/../../Makefile.config
-LINK_COMPONENTS := AsmParser BitReader Core MC MCParser Option Support
+LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser bitreader bitwriter core \
+                   instrumentation ipo mc mcparser objcarcopts option support \
+                   object
 USEDLIBS = clangIndex.a clangARCMigrate.a \
 	   clangRewriteFrontend.a \
 	   clangFormat.a \
 	   clangTooling.a clangToolingCore.a \
-	   clangFrontend.a clangDriver.a \
+	   clangFrontend.a clangCodeGen.a clangDriver.a \
 	   clangSerialization.a \
 	   clangParse.a clangSema.a \
 	   clangStaticAnalyzerCheckers.a clangStaticAnalyzerCore.a \
 	   clangRewrite.a \
 	   clangAnalysis.a clangEdit.a \
 	   clangASTMatchers.a \
-	   clangAST.a clangLex.a clangBasic.a \
+	   clangAST.a clangLex.a clangBasic.a
 
 include $(CLANG_LEVEL)/Makefile