[AST] Store the arguments of CXXConstructExpr in a trailing array

Store the arguments of CXXConstructExpr in a trailing array. This is very
similar to the CallExpr case in D55771, with the exception that there is
only one derived class (CXXTemporaryObjectExpr) and that we compute the
offset to the trailing array instead of storing it.

This saves one pointer per CXXConstructExpr and CXXTemporaryObjectExpr.

Reviewed By: rjmccall

Differential Revision: https://reviews.llvm.org/D56022



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@350003 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 0 deletions

diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h
index ff9be8dbb7..9d8a297487 100644
--- a/include/clang/AST/Stmt.h
+++ b/include/clang/AST/Stmt.h
@@ -655,6 +655,22 @@ protected:
     unsigned NumArgs : 32 - 8 - 1 - NumExprBits;
   };
 
+  class CXXConstructExprBitfields {
+    friend class ASTStmtReader;
+    friend class CXXConstructExpr;
+
+    unsigned : NumExprBits;
+
+    unsigned Elidable : 1;
+    unsigned HadMultipleCandidates : 1;
+    unsigned ListInitialization : 1;
+    unsigned StdInitListInitialization : 1;
+    unsigned ZeroInitialization : 1;
+    unsigned ConstructionKind : 3;
+
+    SourceLocation Loc;
+  };
+
   class ExprWithCleanupsBitfields {
     friend class ASTStmtReader; // deserialization
     friend class ExprWithCleanups;
@@ -746,6 +762,7 @@ protected:
     CXXDefaultInitExprBitfields CXXDefaultInitExprBits;
     CXXDeleteExprBitfields CXXDeleteExprBits;
     TypeTraitExprBitfields TypeTraitExprBits;
+    CXXConstructExprBitfields CXXConstructExprBits;
     ExprWithCleanupsBitfields ExprWithCleanupsBits;
 
     // C++ Coroutines TS expressions