clang/test/CodeGenCXX/microsoft-inaccessible-base.cpp

   1 // RUN: %clang_cc1 -no-opaque-pointers -fms-compatibility -triple x86_64-windows-msvc %s -emit-llvm -o - | FileCheck %s
   2
   3 // Make sure we choose the *direct* base path when doing these conversions.
   4
   5 // CHECK: %struct.C = type { %struct.A, %struct.B }
   6 // CHECK: %struct.D = type { %struct.B, %struct.A }
   7
   8 struct A { int a; };
   9 struct B : A { int b; };
  10
  11 struct C : A, B { };
  12 extern "C" A *a_from_c(C *p) { return p; }
  13 // CHECK-LABEL: define dso_local %struct.A* @a_from_c(%struct.C* noundef %{{.*}})
  14 // CHECK: bitcast %struct.C* %{{.*}} to %struct.A*
  15
  16 struct D : B, A { };
  17 extern "C" A *a_from_d(D *p) { return p; }
  18 // CHECK-LABEL: define dso_local %struct.A* @a_from_d(%struct.D* noundef %{{.*}})
  19 // CHECK: %[[p_i8:[^ ]*]] = bitcast %struct.D* %{{.*}} to i8*
  20 // CHECK: getelementptr inbounds i8, i8* %[[p_i8]], i64 8