clang/test/CodeGenCXX/strict-vtable-pointers-GH67937.cpp

   1 // RUN: %clang_cc1 %s -I%S -triple=x86_64-pc-windows-msvc -fstrict-vtable-pointers -disable-llvm-passes -O1 -emit-llvm -o %t.ll
   2 // RUN: FileCheck %s < %t.ll
   3
   4 struct A {
   5   virtual ~A();
   6 };
   7 struct B : virtual A {};
   8 class C : B {};
   9 C foo;
  10
  11 // CHECK-LABEL: define {{.*}} @"??0C@@QEAA@XZ"(ptr {{.*}} %this, i32 {{.*}} %is_most_derived)
  12 // CHECK: ctor.init_vbases:
  13 // CHECK-NEXT: %0 = getelementptr inbounds i8, ptr %this1, i64 0
  14 // CHECK-NEXT: store ptr @"??_8C@@7B@", ptr %0
  15 // CHECK-NEXT: %1 = call ptr @llvm.launder.invariant.group.p0(ptr %this1)
  16 // CHECK-NEXT: %2 = getelementptr inbounds i8, ptr %1, i64 8
  17 // CHECK-NEXT: %call = call noundef ptr @"??0A@@QEAA@XZ"(ptr {{.*}} %2) #2
  18 // CHECK-NEXT: br label %ctor.skip_vbases
  19 // CHECK-EMPTY:
  20 // CHECK-NEXT: ctor.skip_vbases:
  21 // CHECK-NEXT: %3 = call ptr @llvm.launder.invariant.group.p0(ptr %this1)
  22 // CHECK-NEXT: %call3 = call noundef ptr @"??0B@@QEAA@XZ"(ptr {{.*}} %3, i32 noundef 0) #2