| // Cross comdat example |
| // Parent VTable is in a comdat section. |
| |
| // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s |
| |
| // The inline function is emitted in each module with the same comdat |
| // CHECK: $_ZTS1A = comdat any |
| // CHECK: $_ZTI1A = comdat any |
| // CHECK: $_ZTI1B.rtti_proxy = comdat any |
| |
| // The VTable is emitted everywhere used |
| // CHECK: $_ZTV1A = comdat any |
| // CHECK: $_ZTI1A.rtti_proxy = comdat any |
| |
| // The VTable for B is emitted here since it has a key function which is defined in this module |
| // CHECK: @_ZTV1B.local = private unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8*, i8* }** @_ZTI1B.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.B*)* dso_local_equivalent @_ZN1B3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4 |
| |
| // The VTable for A is emitted here and in a comdat section since it has no key function, and is used in this module when creating an instance of A (in func()). |
| // CHECK: @_ZTV1A.local = linkonce_odr hidden unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8* }** @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.A*)* dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, comdat($_ZTV1A), align 4 |
| |
| // CHECK: @_ZTV1B ={{.*}} unnamed_addr alias { [3 x i32] }, { [3 x i32] }* @_ZTV1B.local |
| // CHECK: @_ZTV1A = linkonce_odr unnamed_addr alias { [3 x i32] }, { [3 x i32] }* @_ZTV1A.local |
| |
| // CHECK: define{{.*}} void @_ZN1B3fooEv(%class.B* {{.*}}%this) unnamed_addr |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: ret void |
| // CHECK-NEXT: } |
| |
| class A { |
| public: |
| inline virtual void foo() {} |
| }; |
| class B : public A { |
| public: |
| void foo() override; |
| }; |
| void A_foo(A *a); |
| |
| void B::foo() {} |
| void func2() { |
| A a; |
| A_foo(&a); |
| } |