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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43282 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/CodeGen/CodeGenTypes.cpp b/CodeGen/CodeGenTypes.cpp
index 4aaf13f549..04394e38fe 100644
--- a/CodeGen/CodeGenTypes.cpp
+++ b/CodeGen/CodeGenTypes.cpp
@@ -176,6 +176,8 @@ const llvm::Type *CodeGenTypes::ConvertType(QualType T) {
         return OpaqueI->second;
 
       // Create new OpaqueType now for later use.
+      // FIXME: This creates a lot of opaque types, most of which are not needed.  
+      // Reevaluate this when performance analyis finds tons of opaque types.
       llvm::OpaqueType *OpaqueTy =  llvm::OpaqueType::get();
       RecordTypesToResolve[RD] = OpaqueTy;