Vendor import of clang r114020 (from the release_28 branch):

http://llvm.org/svn/llvm-project/cfe/branches/release_28@114020

Approved by:	rpaulo (mentor)

1 files changed, 22 insertions, 6 deletions

diff --git a/lib/CodeGen/CGRecordLayout.h b/lib/CodeGen/CGRecordLayout.h
index e95591e..9b4e9f8 100644
--- a/lib/CodeGen/CGRecordLayout.h
+++ b/lib/CodeGen/CGRecordLayout.h
@@ -144,6 +144,21 @@ public:
 
   void print(llvm::raw_ostream &OS) const;
   void dump() const;
+
+  /// \brief Given a bit-field decl, build an appropriate helper object for
+  /// accessing that field (which is expected to have the given offset and
+  /// size).
+  static CGBitFieldInfo MakeInfo(class CodeGenTypes &Types, const FieldDecl *FD,
+                                 uint64_t FieldOffset, uint64_t FieldSize);
+
+  /// \brief Given a bit-field decl, build an appropriate helper object for
+  /// accessing that field (which is expected to have the given offset and
+  /// size). The field decl should be known to be contained within a type of at
+  /// least the given size and with the given alignment.
+  static CGBitFieldInfo MakeInfo(CodeGenTypes &Types, const FieldDecl *FD,
+                                 uint64_t FieldOffset, uint64_t FieldSize,
+                                 uint64_t ContainingTypeSizeInBits,
+                                 unsigned ContainingTypeAlign);
 };
 
 /// CGRecordLayout - This class handles struct and union layout info while
@@ -174,20 +189,21 @@ private:
 
   /// Whether one of the fields in this record layout is a pointer to data
   /// member, or a struct that contains pointer to data member.
-  bool ContainsPointerToDataMember : 1;
+  bool IsZeroInitializable : 1;
 
 public:
-  CGRecordLayout(const llvm::Type *T, bool ContainsPointerToDataMember)
-    : LLVMType(T), ContainsPointerToDataMember(ContainsPointerToDataMember) {}
+  CGRecordLayout(const llvm::Type *T, bool IsZeroInitializable)
+    : LLVMType(T), IsZeroInitializable(IsZeroInitializable) {}
 
   /// \brief Return the LLVM type associated with this record.
   const llvm::Type *getLLVMType() const {
     return LLVMType;
   }
 
-  /// \brief Check whether this struct contains pointers to data members.
-  bool containsPointerToDataMember() const {
-    return ContainsPointerToDataMember;
+  /// \brief Check whether this struct can be C++ zero-initialized
+  /// with a zeroinitializer.
+  bool isZeroInitializable() const {
+    return IsZeroInitializable;
   }
 
   /// \brief Return llvm::StructType element number that corresponds to the