From: Fariborz Jahanian <fjahanian@apple.com>
Date: Sat, 4 Sep 2010 19:49:18 +0000 (+0000)
Subject: Casting of a property reference to 'void' did not
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=699c06068dab18efd37897659ec120d211827607;p=clang

Casting of a property reference to 'void' did not
generate the necessary code. This patch fixes it.
// rdar://8389655


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113079 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index 2318cc4e9a..eb4929d138 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -1038,8 +1038,13 @@ Value *ScalarExprEmitter::EmitCastExpr(CastExpr *CE) {
     return Builder.CreatePtrToInt(Src, ConvertType(DestTy));
   }
   case CK_ToVoid: {
-    if (E->Classify(CGF.getContext()).isGLValue())
-      CGF.EmitLValue(E);
+    if (E->Classify(CGF.getContext()).isGLValue()) {
+      LValue LV = CGF.EmitLValue(E);
+      if (LV.isPropertyRef())
+        CGF.EmitLoadOfPropertyRefLValue(LV, E->getType());
+      else if (LV.isKVCRef())
+        CGF.EmitLoadOfKVCRefLValue(LV, E->getType());
+    }
     else
       CGF.EmitAnyExpr(E, 0, false, true);
     return 0;
diff --git a/test/CodeGenObjC/property-ref-cast-to-void.m b/test/CodeGenObjC/property-ref-cast-to-void.m
new file mode 100644
index 0000000000..a365aa56e8
--- /dev/null
+++ b/test/CodeGenObjC/property-ref-cast-to-void.m
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin9 -emit-llvm -o - %s | FileCheck %s
+
+// rdar: // 8399655
+@interface TestClass
+@property (readonly) int myProperty;
+- (int)myProperty;
+- (double)myGetter;
+@end
+
+void FUNC () {
+    TestClass *obj;
+    (void)obj.myProperty; 
+    (void)obj.myGetter; 
+}
+
+// CHECK: call i32 bitcast
+// CHECK: call double bitcast