ObjectiveC. add comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199257 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 2b2a5b83760824398622995603294dbc9ff62e8d..2a04d5dfcaf53d7596faf240b6f4c9bfe322b9bf 100644 (file)
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -4293,14 +4293,14 @@ llvm::Value *CGObjCMac::EmitIvarOffset(CodeGen::CodeGenFunction &CGF,
 ///   unsigned flags;
 /// };
 enum ImageInfoFlags {
-  eImageInfo_FixAndContinue      = (1 << 0),
+  eImageInfo_FixAndContinue      = (1 << 0), // no longer set by clang
   eImageInfo_GarbageCollected    = (1 << 1),
   eImageInfo_GCOnly              = (1 << 2),
-  eImageInfo_OptimizedByDyld     = (1 << 3), // FIXME: When is this set.
+  eImageInfo_OptimizedByDyld     = (1 << 3), // set by the dyld shared cache
 
   // A flag indicating that the module has no instances of a @synthesize of a
   // superclass variable. <rdar://problem/6803242>
-  eImageInfo_CorrectedSynthesize = (1 << 4),
+  eImageInfo_CorrectedSynthesize = (1 << 4), // no longer set by clang
   eImageInfo_ImageIsSimulated    = (1 << 5)
 };