[AST] Only store data for the NRVO candidate in ReturnStmt if needed
Only store the NRVO candidate if needed in ReturnStmt.
A good chuck of all of the ReturnStmt have no NRVO candidate
(more than half when parsing all of Boost). For all of them
this saves one pointer. This has no impact on children().
Differential Revision: https://reviews.llvm.org/D53716
Reviewed By: rsmith
llvm-svn: 345605
diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
index 3d02971..2b0c952 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -249,9 +249,15 @@
void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
VisitStmt(S);
+
+ bool HasNRVOCandidate = S->getNRVOCandidate() != nullptr;
+ Record.push_back(HasNRVOCandidate);
+
Record.AddStmt(S->getRetValue());
+ if (HasNRVOCandidate)
+ Record.AddDeclRef(S->getNRVOCandidate());
+
Record.AddSourceLocation(S->getReturnLoc());
- Record.AddDeclRef(S->getNRVOCandidate());
Code = serialization::STMT_RETURN;
}