Add a new expression node, CXXOperatorCallExpr, which expresses a

function call created in response to the use of operator syntax that
resolves to an overloaded operator in C++, e.g., "str1 +
str2" that resolves to std::operator+(str1, str2)". We now build a
CXXOperatorCallExpr in C++ when we pick an overloaded operator. (But
only for binary operators, where we actually implement overloading)

I decided *not* to refactor the current CallExpr to make it abstract
(with FunctionCallExpr and CXXOperatorCallExpr as derived
classes). Doing so would allow us to make CXXOperatorCallExpr a little
bit smaller, at the cost of making the argument and callee accessors
virtual. We won't know if this is going to be a win until we can parse
lots of C++ code to determine how much memory we'll save by making
this change vs. the performance penalty due to the extra virtual
calls.

llvm-svn: 59306

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Analysis/GRExprEngine.cpp b/clang/lib/Analysis/GRExprEngine.cpp
index cb7c7fe3e18..545d869379d 100644
--- a/clang/lib/Analysis/GRExprEngine.cpp
+++ b/clang/lib/Analysis/GRExprEngine.cpp
@@ -311,7 +311,8 @@ void GRExprEngine::Visit(Stmt* S, NodeTy* Pred, NodeSet& Dst) {
       break;
     }
       
-    case Stmt::CallExprClass: {
+    case Stmt::CallExprClass:
+    case Stmt::CXXOperatorCallExprClass: {
       CallExpr* C = cast<CallExpr>(S);
       VisitCall(C, Pred, C->arg_begin(), C->arg_end(), Dst);
       break;