Recognize when the named return value optimization applies in a
"return" statement and mark the corresponding CXXConstructExpr as
elidable. Teach CodeGen that eliding a temporary is different from
eliding an object construction.
This is just a baby step toward NRVO.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103849 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriterStmt.cpp b/lib/Frontend/PCHWriterStmt.cpp
index 9a361d4..a7f73a1 100644
--- a/lib/Frontend/PCHWriterStmt.cpp
+++ b/lib/Frontend/PCHWriterStmt.cpp
@@ -873,6 +873,7 @@
Record.push_back(E->getNumArgs());
for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
Writer.WriteSubStmt(E->getArg(I));
+ Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
Code = pch::EXPR_CXX_CONSTRUCT;
}