[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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@375305 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 13 insertions, 0 deletions

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 2bd1b0ba7e..dcd365c8ea 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1267,6 +1267,8 @@ LValue CodeGenFunction::EmitLValue(const Expr *E) {
   case Expr::CXXOperatorCallExprClass:
   case Expr::UserDefinedLiteralClass:
     return EmitCallExprLValue(cast<CallExpr>(E));
+  case Expr::CXXRewrittenBinaryOperatorClass:
+    return EmitLValue(cast<CXXRewrittenBinaryOperator>(E)->getSemanticForm());
   case Expr::VAArgExprClass:
     return EmitVAArgExprLValue(cast<VAArgExpr>(E));
   case Expr::DeclRefExprClass:
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index ab51512ef9..2f0e493761 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -150,6 +150,9 @@ public:
   void VisitBinAssign(const BinaryOperator *E);
   void VisitBinComma(const BinaryOperator *E);
   void VisitBinCmp(const BinaryOperator *E);
+  void VisitCXXRewrittenBinaryOperator(CXXRewrittenBinaryOperator *E) {
+    Visit(E->getSemanticForm());
+  }
 
   void VisitObjCMessageExpr(ObjCMessageExpr *E);
   void VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
diff --git a/lib/CodeGen/CGExprComplex.cpp b/lib/CodeGen/CGExprComplex.cpp
index 6a5fb45ba2..385f87f12a 100644
--- a/lib/CodeGen/CGExprComplex.cpp
+++ b/lib/CodeGen/CGExprComplex.cpp
@@ -279,6 +279,10 @@ public:
     return EmitBinDiv(EmitBinOps(E));
   }
 
+  ComplexPairTy VisitCXXRewrittenBinaryOperator(CXXRewrittenBinaryOperator *E) {
+    return Visit(E->getSemanticForm());
+  }
+
   // Compound assignments.
   ComplexPairTy VisitBinAddAssign(const CompoundAssignOperator *E) {
     return EmitCompoundAssign(E, &ComplexExprEmitter::EmitBinAdd);
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index f1396137d7..55a413a2a7 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -817,6 +817,10 @@ public:
   Value *VisitBinPtrMemD(const Expr *E) { return EmitLoadOfLValue(E); }
   Value *VisitBinPtrMemI(const Expr *E) { return EmitLoadOfLValue(E); }
 
+  Value *VisitCXXRewrittenBinaryOperator(CXXRewrittenBinaryOperator *E) {
+    return Visit(E->getSemanticForm());
+  }
+
   // Other Operators.
   Value *VisitBlockExpr(const BlockExpr *BE);
   Value *VisitAbstractConditionalOperator(const AbstractConditionalOperator *);