implement codegen support for __builtin_types_compatible_p

llvm-svn: 40788

2 files changed, 11 insertions, 0 deletions

diff --git a/clang/CodeGen/CGExpr.cpp b/clang/CodeGen/CGExpr.cpp
index 3cae677cd0c..9697686b1a7 100644
--- a/clang/CodeGen/CGExpr.cpp
+++ b/clang/CodeGen/CGExpr.cpp
@@ -614,6 +614,8 @@ RValue CodeGenFunction::EmitExpr(const Expr *E) {
     return EmitFloatingLiteral(cast<FloatingLiteral>(E));
   case Expr::CharacterLiteralClass:
     return EmitCharacterLiteral(cast<CharacterLiteral>(E));
+  case Expr::TypesCompatibleExprClass:
+    return EmitTypesCompatibleExpr(cast<TypesCompatibleExpr>(E));
     
   // Operators.  
   case Expr::ParenExprClass:
@@ -651,6 +653,12 @@ RValue CodeGenFunction::EmitCharacterLiteral(const CharacterLiteral *E) {
                                             E->getValue()));
 }
 
+RValue CodeGenFunction::EmitTypesCompatibleExpr(const TypesCompatibleExpr *E) {
+  return RValue::get(llvm::ConstantInt::get(ConvertType(E->getType()),
+                                            E->typesAreCompatible()));
+}
+
+
 RValue CodeGenFunction::EmitArraySubscriptExprRV(const ArraySubscriptExpr *E) {
   // Emit subscript expressions in rvalue context's.  For most cases, this just
   // loads the lvalue formed by the subscript expr.  However, we have to be
diff --git a/clang/CodeGen/CodeGenFunction.h b/clang/CodeGen/CodeGenFunction.h
index 3235034a0ba..4c79498c462 100644
--- a/clang/CodeGen/CodeGenFunction.h
+++ b/clang/CodeGen/CodeGenFunction.h
@@ -48,6 +48,8 @@ namespace clang {
   class IntegerLiteral;
   class FloatingLiteral;
   class CharacterLiteral;
+  class TypesCompatibleExpr;
+  
   class CastExpr;
   class CallExpr;
   class UnaryOperator;
@@ -351,6 +353,7 @@ public:
   RValue EmitIntegerLiteral(const IntegerLiteral *E);
   RValue EmitFloatingLiteral(const FloatingLiteral *E);
   RValue EmitCharacterLiteral(const CharacterLiteral *E);
+  RValue EmitTypesCompatibleExpr(const TypesCompatibleExpr *E);
    
   RValue EmitCastExpr(const Expr *Op, QualType DestTy);
   RValue EmitCallExpr(const CallExpr *E);