[c++20] Add CXXRewrittenBinaryOperator to represent a comparison

operator that is rewritten as a call to multiple other operators.

No functionality change yet: nothing creates these expressions.

llvm-svn: 375305

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 534a92d2cb8..c55a9013757 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -4090,6 +4090,17 @@ recurse:
     break;
   }
 
+  case Expr::CXXRewrittenBinaryOperatorClass: {
+    // The mangled form represents the original syntax.
+    CXXRewrittenBinaryOperator::DecomposedForm Decomposed =
+        cast<CXXRewrittenBinaryOperator>(E)->getDecomposedForm();
+    mangleOperatorName(BinaryOperator::getOverloadedOperator(Decomposed.Opcode),
+                       /*Arity=*/2);
+    mangleExpression(Decomposed.LHS);
+    mangleExpression(Decomposed.RHS);
+    break;
+  }
+
   case Expr::ConditionalOperatorClass: {
     const ConditionalOperator *CO = cast<ConditionalOperator>(E);
     mangleOperatorName(OO_Conditional, /*Arity=*/3);