Fix for r163013 regression and further __interface enhancement.

Patch by Andy Gibbs!

llvm-svn: 164590

1 files changed, 43 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/microsoft-interface.cpp b/clang/test/CodeGenCXX/microsoft-interface.cpp
new file mode 100644
index 00000000000..3887d18df1b
--- /dev/null
+++ b/clang/test/CodeGenCXX/microsoft-interface.cpp
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -std=c++11 -fms-extensions -Wno-microsoft -triple=i386-pc-win32 -emit-llvm %s -o - | FileCheck %s
+
+__interface I {
+  int test() {
+    return 1;
+  }
+};
+
+struct S : I {
+  virtual int test() override {
+    return I::test();
+  }
+};
+
+int fn() {
+  S s;
+  return s.test();
+}
+
+// CHECK: @_ZTV1S = linkonce_odr unnamed_addr constant [3 x i8*] [i8* null, i8* bitcast ({ i8*, i8*, i8* }* @_ZTI1S to i8*), i8* bitcast (i32 (%struct.S*)* @_ZN1S4testEv to i8*)]
+
+// CHECK: define i32 @_Z2fnv()
+// CHECK:   call void @_ZN1SC1Ev(%struct.S* %s)
+// CHECK:   %call = call i32 @_ZN1S4testEv(%struct.S* %s)
+
+// CHECK: define linkonce_odr void @_ZN1SC1Ev(%struct.S* %this)
+// CHECK:   call void @_ZN1SC2Ev(%struct.S* %this1)
+
+// CHECK: define linkonce_odr i32 @_ZN1S4testEv(%struct.S* %this)
+// CHECK:   %call = call i32 @_ZN1I4testEv(%__interface.I* %0)
+
+// CHECK: define linkonce_odr i32 @_ZN1I4testEv(%__interface.I* %this)
+// CHECK:   ret i32 1
+
+// CHECK: define linkonce_odr void @_ZN1SC2Ev(%struct.S* %this)
+// CHECK:   call void @_ZN1IC2Ev(%__interface.I* %0)
+// CHECK:   store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1S, i64 0, i64 2), i8*** %1
+
+// CHECK: define linkonce_odr void @_ZN1IC2Ev(%__interface.I* %this)
+// CHECK:   store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1I, i64 0, i64 2), i8*** %0
+
+// CHECK-NOT: define linkonce_odr %__interface.I* @_ZN1IaSERKS_(%__interface.I* %this, %__interface.I*)
+// CHECK-NOT: define linkonce_odr %__interface.I* @_ZN1IaSEOS_(%__interface.I* %this, %__interface.I*)