Vendor import of clang trunk r178860:

http://llvm.org/svn/llvm-project/cfe/trunk@178860

1 files changed, 51 insertions, 0 deletions

diff --git a/test/CodeGenCXX/microsoft-abi-member-pointers.cpp b/test/CodeGenCXX/microsoft-abi-member-pointers.cpp
new file mode 100755
index 0000000..997e007
--- /dev/null
+++ b/test/CodeGenCXX/microsoft-abi-member-pointers.cpp
@@ -0,0 +1,51 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck %s
+
+struct POD {
+  int a;
+  int b;
+};
+
+void podMemPtrs() {
+  int POD::*memptr;
+  memptr = &POD::a;
+  memptr = &POD::b;
+  if (memptr)
+    memptr = 0;
+// Check that member pointers use the right offsets and that null is -1.
+// CHECK:      define void @"\01?podMemPtrs@@YAXXZ"() #0 {
+// CHECK:        %[[memptr:.*]] = alloca i32, align 4
+// CHECK-NEXT:   store i32 0, i32* %[[memptr]], align 4
+// CHECK-NEXT:   store i32 4, i32* %[[memptr]], align 4
+// CHECK-NEXT:   %[[memptr_val:.*]] = load i32* %[[memptr]], align 4
+// CHECK-NEXT:   %{{.*}} = icmp ne i32 %[[memptr_val]], -1
+// CHECK-NEXT:   br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+// CHECK:        store i32 -1, i32* %[[memptr]], align 4
+// CHECK:        ret void
+// CHECK:      }
+}
+
+struct Polymorphic {
+  virtual void myVirtual();
+  int a;
+  int b;
+};
+
+void polymorphicMemPtrs() {
+  int Polymorphic::*memptr;
+  memptr = &Polymorphic::a;
+  memptr = &Polymorphic::b;
+  if (memptr)
+    memptr = 0;
+// Member pointers for polymorphic classes include the vtable slot in their
+// offset and use 0 to represent null.
+// CHECK:      define void @"\01?polymorphicMemPtrs@@YAXXZ"() #0 {
+// CHECK:        %[[memptr:.*]] = alloca i32, align 4
+// CHECK-NEXT:   store i32 4, i32* %[[memptr]], align 4
+// CHECK-NEXT:   store i32 8, i32* %[[memptr]], align 4
+// CHECK-NEXT:   %[[memptr_val:.*]] = load i32* %[[memptr]], align 4
+// CHECK-NEXT:   %{{.*}} = icmp ne i32 %[[memptr_val]], 0
+// CHECK-NEXT:   br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+// CHECK:        store i32 0, i32* %[[memptr]], align 4
+// CHECK:        ret void
+// CHECK:      }
+}