Vendor import of clang trunk r242221:vendor/clang/clang-trunk-r242221

https://llvm.org/svn/llvm-project/cfe/trunk@242221

8 files changed, 88 insertions, 10 deletions

diff --git a/tools/libclang/BuildSystem.cpp b/tools/libclang/BuildSystem.cpp
index e9423c328698..fe3db755eba8 100644
--- a/tools/libclang/BuildSystem.cpp
+++ b/tools/libclang/BuildSystem.cpp
@@ -84,6 +84,10 @@ clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay VFO, unsigned,
   return CXError_Success;
 }
 
+void clang_free(void *buffer) {
+  free(buffer);
+}
+
 void clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay VFO) {
   delete unwrap(VFO);
 }
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index bf5b58253ad0..6e48bab9f509 100644
--- a/tools/libclang/CIndex.cpp
+++ b/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"
@@ -53,6 +54,7 @@
 #include "llvm/Support/Program.h"
 #include "llvm/Support/SaveAndRestore.h"
 #include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/Threading.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
@@ -916,6 +918,18 @@ bool CursorVisitor::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
   return false;
 }
 
+bool CursorVisitor::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
+  // Visit the bound, if it's explicit.
+  if (D->hasExplicitBound()) {
+    if (auto TInfo = D->getTypeSourceInfo()) {
+      if (Visit(TInfo->getTypeLoc()))
+        return true;
+    }
+  }
+
+  return false;
+}
+
 bool CursorVisitor::VisitObjCMethodDecl(ObjCMethodDecl *ND) {
   if (TypeSourceInfo *TSInfo = ND->getReturnTypeSourceInfo())
     if (Visit(TSInfo->getTypeLoc()))
@@ -1021,6 +1035,9 @@ bool CursorVisitor::VisitObjCCategoryDecl(ObjCCategoryDecl *ND) {
                                    TU)))
     return true;
 
+  if (VisitObjCTypeParamList(ND->getTypeParamList()))
+    return true;
+
   ObjCCategoryDecl::protocol_loc_iterator PL = ND->protocol_loc_begin();
   for (ObjCCategoryDecl::protocol_iterator I = ND->protocol_begin(),
          E = ND->protocol_end(); I != E; ++I, ++PL)
@@ -1080,12 +1097,29 @@ bool CursorVisitor::VisitObjCPropertyDecl(ObjCPropertyDecl *PD) {
   return false;
 }
 
+bool CursorVisitor::VisitObjCTypeParamList(ObjCTypeParamList *typeParamList) {
+  if (!typeParamList)
+    return false;
+
+  for (auto *typeParam : *typeParamList) {
+    // Visit the type parameter.
+    if (Visit(MakeCXCursor(typeParam, TU, RegionOfInterest)))
+      return true;
+  }
+
+  return false;
+}
+
 bool CursorVisitor::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
   if (!D->isThisDeclarationADefinition()) {
     // Forward declaration is treated like a reference.
     return Visit(MakeCursorObjCClassRef(D, D->getLocation(), TU));
   }
 
+  // Objective-C type parameters.
+  if (VisitObjCTypeParamList(D->getTypeParamListAsWritten()))
+    return true;
+
   // Issue callbacks for super class.
   if (D->getSuperClass() &&
       Visit(MakeCursorObjCSuperClassRef(D->getSuperClass(),
@@ -1093,6 +1127,10 @@ bool CursorVisitor::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
                                         TU)))
     return true;
 
+  if (TypeSourceInfo *SuperClassTInfo = D->getSuperClassTInfo())
+    if (Visit(SuperClassTInfo->getTypeLoc()))
+      return true;
+
   ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin();
   for (ObjCInterfaceDecl::protocol_iterator I = D->protocol_begin(),
          E = D->protocol_end(); I != E; ++I, ++PL)
@@ -1486,6 +1524,11 @@ bool CursorVisitor::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
   if (TL.hasBaseTypeAsWritten() && Visit(TL.getBaseLoc()))
     return true;
 
+  for (unsigned I = 0, N = TL.getNumTypeArgs(); I != N; ++I) {
+    if (Visit(TL.getTypeArgTInfo(I)->getTypeLoc()))
+      return true;
+  }
+
   for (unsigned I = 0, N = TL.getNumProtocols(); I != N; ++I) {
     if (Visit(MakeCursorObjCProtocolRef(TL.getProtocol(I), TL.getProtocolLoc(I),
                                         TU)))
@@ -2835,7 +2878,14 @@ CXIndex clang_createIndex(int excludeDeclarationsFromPCH,
   // registered once.
   (void)*RegisterFatalErrorHandlerOnce;
 
-  CIndexer *CIdxr = new CIndexer();
+  // Initialize targets for clang module support.
+  llvm::InitializeAllTargets();
+  llvm::InitializeAllTargetMCs();
+  llvm::InitializeAllAsmPrinters();
+  llvm::InitializeAllAsmParsers();
+
+  CIndexer *CIdxr =
+      new CIndexer(std::make_shared<ObjectFilePCHContainerOperations>());
   if (excludeDeclarationsFromPCH)
     CIdxr->setOnlyLocalDecls();
   if (displayDiagnostics)
@@ -3052,6 +3102,12 @@ static void clang_parseTranslationUnit_Impl(void *UserData) {
       /*AllowPCHWithCompilerErrors=*/true, SkipFunctionBodies,
       /*UserFilesAreVolatile=*/true, ForSerialization, &ErrUnit));
 
+  // Early failures in LoadFromCommandLine may return with ErrUnit unset.
+  if (!Unit && !ErrUnit) {
+    PTUI->result = CXError_ASTReadError;
+    return;
+  }
+
   if (NumErrors != Diags->getClient()->getNumErrors()) {
     // Make sure to check that 'Unit' is non-NULL.
     if (CXXIdx->getDisplayDiagnostics())
@@ -4411,7 +4467,12 @@ static enum CXChildVisitResult GetCursorVisitor(CXCursor cursor,
     *BestCursor = getTypeRefedCallExprCursor(*BestCursor);
     return CXChildVisit_Recurse;
   }
-  
+
+  // If we already have an Objective-C superclass reference, don't
+  // update it further.
+  if (BestCursor->kind == CXCursor_ObjCSuperClassRef)
+    return CXChildVisit_Break;
+
   *BestCursor = cursor;
   return CXChildVisit_Recurse;
 }
@@ -5038,6 +5099,7 @@ CXCursor clang_getCursorDefinition(CXCursor C) {
   case Decl::ClassScopeFunctionSpecialization:
   case Decl::Import:
   case Decl::OMPThreadPrivate:
+  case Decl::ObjCTypeParam:
     return C;
 
   // Declaration kinds that don't make any sense here, but are
@@ -6321,6 +6383,7 @@ static CXLanguageKind getDeclLanguage(const Decl *D) {
     case Decl::ObjCProperty:
     case Decl::ObjCPropertyImpl:
     case Decl::ObjCProtocol:
+    case Decl::ObjCTypeParam:
       return CXLanguage_ObjC;
     case Decl::CXXConstructor:
     case Decl::CXXConversion:
diff --git a/tools/libclang/CIndexCodeCompletion.cpp b/tools/libclang/CIndexCodeCompletion.cpp
index a7b8e292047b..9609a693abdf 100644
--- a/tools/libclang/CIndexCodeCompletion.cpp
+++ b/tools/libclang/CIndexCodeCompletion.cpp
@@ -542,7 +542,7 @@ namespace {
       StoredResults.reserve(StoredResults.size() + NumResults);
       for (unsigned I = 0; I != NumResults; ++I) {
         CodeCompletionString *StoredCompletion        
-          = Results[I].CreateCodeCompletionString(S, getAllocator(),
+          = Results[I].CreateCodeCompletionString(S, Context, getAllocator(),
                                                   getCodeCompletionTUInfo(),
                                                   includeBriefComments());
         
diff --git a/tools/libclang/CMakeLists.txt b/tools/libclang/CMakeLists.txt
index 26f88a97c574..fb292090565d 100644
--- a/tools/libclang/CMakeLists.txt
+++ b/tools/libclang/CMakeLists.txt
@@ -40,6 +40,7 @@ set(SOURCES
 set(LIBS
   clangAST
   clangBasic
+  clangCodeGen
   clangFrontend
   clangIndex
   clangLex
@@ -91,6 +92,7 @@ add_clang_library(libclang ${ENABLE_SHARED} ${ENABLE_STATIC}
   ${LIBS}
 
   LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
   Core
   Support
   )
diff --git a/tools/libclang/CXCursor.cpp b/tools/libclang/CXCursor.cpp
index fe9ba4eac1b1..099edcf14fed 100644
--- a/tools/libclang/CXCursor.cpp
+++ b/tools/libclang/CXCursor.cpp
@@ -1298,6 +1298,7 @@ CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
       CodeCompletionString *String
         = Result.CreateCodeCompletionString(unit->getASTContext(),
                                             unit->getPreprocessor(),
+                                            CodeCompletionContext::CCC_Other,
                                  unit->getCodeCompletionTUInfo().getAllocator(),
                                  unit->getCodeCompletionTUInfo(),
                                  true);
@@ -1308,10 +1309,13 @@ CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
     const IdentifierInfo *MacroInfo = definition->getName();
     ASTUnit *unit = getCursorASTUnit(cursor);
     CodeCompletionResult Result(MacroInfo);
-    CodeCompletionString *String = Result.CreateCodeCompletionString(
-        unit->getASTContext(), unit->getPreprocessor(),
-        unit->getCodeCompletionTUInfo().getAllocator(),
-        unit->getCodeCompletionTUInfo(), false);
+    CodeCompletionString *String
+      = Result.CreateCodeCompletionString(unit->getASTContext(),
+                                          unit->getPreprocessor(),
+                                          CodeCompletionContext::CCC_Other,
+                                 unit->getCodeCompletionTUInfo().getAllocator(),
+                                 unit->getCodeCompletionTUInfo(),
+                                 false);
     return String;
   }
   return nullptr;
diff --git a/tools/libclang/CursorVisitor.h b/tools/libclang/CursorVisitor.h
index 1b2a922204f8..91f63b40f6a5 100644
--- a/tools/libclang/CursorVisitor.h
+++ b/tools/libclang/CursorVisitor.h
@@ -217,11 +217,13 @@ public:
   bool VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
   bool VisitClassTemplateDecl(ClassTemplateDecl *D);
   bool VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
+  bool VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
   bool VisitObjCMethodDecl(ObjCMethodDecl *ND);
   bool VisitObjCContainerDecl(ObjCContainerDecl *D);
   bool VisitObjCCategoryDecl(ObjCCategoryDecl *ND);
   bool VisitObjCProtocolDecl(ObjCProtocolDecl *PID);
   bool VisitObjCPropertyDecl(ObjCPropertyDecl *PD);
+  bool VisitObjCTypeParamList(ObjCTypeParamList *typeParamList);
   bool VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
   bool VisitObjCImplDecl(ObjCImplDecl *D);
   bool VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
diff --git a/tools/libclang/Makefile b/tools/libclang/Makefile
index 97f663cde478..84914e0f4609 100644
--- a/tools/libclang/Makefile
+++ b/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
 
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index f78f9981a98b..f6a7175579aa 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -132,6 +132,7 @@ clang_findIncludesInFileWithBlock
 clang_findReferencesInFile
 clang_findReferencesInFileWithBlock
 clang_formatDiagnostic
+clang_free
 clang_getArgType
 clang_getArrayElementType
 clang_getArraySize