More work toward implementing

NeXt's -fno-constant-cfstrings - wip.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102189 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 25 insertions, 2 deletions

diff --git a/include/clang/AST/ASTContext.h b/include/clang/AST/ASTContext.h
index ec17b943af..1a39889911 100644
--- a/include/clang/AST/ASTContext.h
+++ b/include/clang/AST/ASTContext.h
@@ -165,6 +165,8 @@ class ASTContext {
   QualType ObjCConstantStringType;
   RecordDecl *CFConstantStringTypeDecl;
 
+  RecordDecl *NSConstantStringTypeDecl;
+
   RecordDecl *ObjCFastEnumerationStateTypeDecl;
 
   /// \brief The type for the C FILE type.
@@ -689,6 +691,19 @@ public:
   // constant CFStrings.
   QualType getCFConstantStringType();
 
+  // getNSConstantStringType - Return the C structure type used to represent
+  // constant NSStrings.
+  QualType getNSConstantStringType();
+  /// Get the structure type used to representation NSStrings, or NULL
+  /// if it hasn't yet been built.
+  QualType getRawNSConstantStringType() {
+    if (NSConstantStringTypeDecl)
+      return getTagDeclType(NSConstantStringTypeDecl);
+    return QualType();
+  }
+  void setNSConstantStringType(QualType T);
+
+
   /// Get the structure type used to representation CFStrings, or NULL
   /// if it hasn't yet been built.
   QualType getRawCFConstantStringType() {
diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index 81c780c9be..455b745270 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -339,6 +339,12 @@ public:
     return "__DATA,__cfstring";
   }
 
+  /// getNSStringSection - Return the section to use for NSString
+  /// literals, or 0 if no special section is used.
+  virtual const char *getNSStringSection() const {
+    return "__OBJC,__cstring_object,regular,no_dead_strip";
+  }
+
   /// isValidSectionSpecifier - This is an optional hook that targets can
   /// implement to perform semantic checking on attribute((section("foo")))
   /// specifiers.  In this case, "foo" is passed in to be checked.  If the
diff --git a/include/clang/Frontend/PCHBitCodes.h b/include/clang/Frontend/PCHBitCodes.h
index f975c497be..457e63332f 100644
--- a/include/clang/Frontend/PCHBitCodes.h
+++ b/include/clang/Frontend/PCHBitCodes.h
@@ -453,7 +453,9 @@ namespace clang {
       /// \brief Block extedned descriptor type for Blocks CodeGen
       SPECIAL_TYPE_BLOCK_EXTENDED_DESCRIPTOR   = 13,
       /// \brief Objective-C "SEL" redefinition type
-      SPECIAL_TYPE_OBJC_SEL_REDEFINITION       = 14
+      SPECIAL_TYPE_OBJC_SEL_REDEFINITION       = 14,
+      /// \brief NSConstantString type
+      SPECIAL_TYPE_NS_CONSTANT_STRING          = 15
     };
 
     /// \brief Record codes for each kind of declaration.
diff --git a/include/clang/Frontend/PCHReader.h b/include/clang/Frontend/PCHReader.h
index e324228e92..c2352301ca 100644
--- a/include/clang/Frontend/PCHReader.h
+++ b/include/clang/Frontend/PCHReader.h
@@ -436,7 +436,7 @@ private:
   std::deque<PendingIdentifierInfo> PendingIdentifierInfos;
 
   /// \brief FIXME: document!
-  llvm::SmallVector<uint64_t, 4> SpecialTypes;
+  llvm::SmallVector<uint64_t, 16> SpecialTypes;
 
   /// \brief Contains declarations and definitions that will be
   /// "interesting" to the ASTConsumer, when we get that AST consumer.