clang/test/CodeGenCXX/RelativeVTablesABI/cross-translation-unit-2.cpp

   1 // Check the vtable layout for classes with key functions defined in different
   2 // translation units. This TU manifests the vtable for B.
   3
   4 // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s
   5
   6 #include "cross-tu-header.h"
   7
   8 // CHECK: $_ZTI1B.rtti_proxy = comdat any
   9
  10 // CHECK: @_ZTV1B.local = private unnamed_addr constant { [4 x i32] } { [4 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1B.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1B3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3barEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
  11 // CHECK: @_ZTV1B ={{.*}} unnamed_addr alias { [4 x i32] }, ptr @_ZTV1B.local
  12
  13 // A::bar() is defined outside of the module that defines the vtable for A
  14 // CHECK:      define{{.*}} void @_ZN1A3barEv(ptr {{.*}}%this) unnamed_addr
  15 // CHECK-NEXT: entry:
  16 // CHECK-NEXT:   ret void
  17 // CHECK-NEXT: }
  18
  19 // CHECK:      define{{.*}} void @_ZN1B3fooEv(ptr {{.*}}%this) unnamed_addr
  20 // CHECK-NEXT: entry:
  21 // CHECK-NEXT:   ret void
  22 // CHECK-NEXT: }
  23
  24 void A::bar() {}
  25 void B::foo() {}