Support member reference on ?: of struct type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67603 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 21 insertions, 0 deletions

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 45cd6a70a5..b52c81eb0b 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -179,6 +179,8 @@ LValue CodeGenFunction::EmitLValue(const Expr *E) {
   case Expr::MemberExprClass: return EmitMemberExpr(cast<MemberExpr>(E));
   case Expr::CompoundLiteralExprClass:
     return EmitCompoundLiteralLValue(cast<CompoundLiteralExpr>(E));
+  case Expr::ConditionalOperatorClass:
+    return EmitConditionalOperator(cast<ConditionalOperator>(E));
   case Expr::ChooseExprClass:
     return EmitLValue(cast<ChooseExpr>(E)->getChosenSubExpr(getContext()));
   case Expr::ImplicitCastExprClass:
@@ -1009,6 +1011,24 @@ LValue CodeGenFunction::EmitCompoundLiteralLValue(const CompoundLiteralExpr* E){
   return Result;
 }
 
+LValue CodeGenFunction::EmitConditionalOperator(const ConditionalOperator* E) {
+  // We don't handle vectors yet.
+  if (E->getType()->isVectorType())
+    return EmitUnsupportedLValue(E, "conditional operator");
+
+  // ?: here should be an aggregate.
+  assert((hasAggregateLLVMType(E->getType()) && 
+          !E->getType()->isAnyComplexType()) &&
+         "Unexpected conditional operator!");
+
+  llvm::Value *Temp = CreateTempAlloca(ConvertType(E->getType()));
+  EmitAggExpr(E, Temp, false);
+
+  return LValue::MakeAddr(Temp, E->getType().getCVRQualifiers(),
+                          getContext().getObjCGCAttrKind(E->getType()));
+ 
+}
+
 /// EmitCastLValue - Casts are never lvalues.  If a cast is needed by the code
 /// generator in an lvalue context, then it must mean that we need the address
 /// of an aggregate in order to access one of its fields.  This can happen for
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 9771c83d84..acac86d8c2 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -608,6 +608,7 @@ public:
   LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E);
   LValue EmitMemberExpr(const MemberExpr *E);
   LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E);
+  LValue EmitConditionalOperator(const ConditionalOperator *E);
   LValue EmitCastLValue(const CastExpr *E);
 
   llvm::Value *EmitIvarOffset(ObjCInterfaceDecl *Interface,