Remove CXXRecordDecl flags which are unused after r158289.

We need an efficient mechanism to determine whether a defaulted default
constructor is constexpr, in order to determine whether a class is a literal
type, so keep the incrementally-built form on CXXRecordDecl. Remove the
on-demand computation of same, so that we only have one method for determining
whether a default constructor is constexpr. This doesn't affect correctness,
since default constructor lookup is much simpler than selecting a constructor
for copying or moving.

We don't need a corresponding mechanism for defaulted copy or move constructors,
since they can't affect whether a type is a literal type. Conversely, checking
whether such functions are constexpr can require non-trivial effort, so we defer
such checks until the copy or move constructor is required.

Thus we now only compute whether a copy or move constructor is constexpr on
demand, and only compute whether a default constructor is constexpr in advance.
This is unfortunate, but seems like the best solution.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158290 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 6 deletions

diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index d8550eb0f2..bc139207ce 100644
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -1858,14 +1858,8 @@ bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
       = FromData.HasConstexprNonCopyMoveConstructor;
     ToData.DefaultedDefaultConstructorIsConstexpr
       = FromData.DefaultedDefaultConstructorIsConstexpr;
-    ToData.DefaultedCopyConstructorIsConstexpr
-      = FromData.DefaultedCopyConstructorIsConstexpr;
-    ToData.DefaultedMoveConstructorIsConstexpr
-      = FromData.DefaultedMoveConstructorIsConstexpr;
     ToData.HasConstexprDefaultConstructor
       = FromData.HasConstexprDefaultConstructor;
-    ToData.HasConstexprCopyConstructor = FromData.HasConstexprCopyConstructor;
-    ToData.HasConstexprMoveConstructor = FromData.HasConstexprMoveConstructor;
     ToData.HasTrivialCopyConstructor = FromData.HasTrivialCopyConstructor;
     ToData.HasTrivialMoveConstructor = FromData.HasTrivialMoveConstructor;
     ToData.HasTrivialCopyAssignment = FromData.HasTrivialCopyAssignment;