xref: /aosp_15_r20/external/clang/test/CodeGenCXX/pragma-weak.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm %s -o - | FileCheck %s
2*67e74705SXin Li 
3*67e74705SXin Li #pragma weak zex
4*67e74705SXin Li int zex;
5*67e74705SXin Li // GCC produces a weak symbol for this because it matches mangled names.
6*67e74705SXin Li // Different c++ ABIs may or may not mangle this, so we produce a strong
7*67e74705SXin Li // symbol.
8*67e74705SXin Li // CHECK: @zex = global i32
9*67e74705SXin Li 
10*67e74705SXin Li #pragma weak foo
11*67e74705SXin Li struct S {  void foo(); };
foo()12*67e74705SXin Li void S::foo() {}
13*67e74705SXin Li // CHECK-LABEL: define {{.*}}void @_ZN1S3fooEv(
14*67e74705SXin Li 
15*67e74705SXin Li #pragma weak zed
zed()16*67e74705SXin Li namespace bar {  void zed() {} }
17*67e74705SXin Li // CHECK-LABEL: define {{.*}}void @_ZN3bar3zedEv(
18*67e74705SXin Li 
19*67e74705SXin Li #pragma weak bah
bah()20*67e74705SXin Li void bah() {}
21*67e74705SXin Li // CHECK-LABEL: define {{.*}}void @_Z3bahv(
22*67e74705SXin Li 
23*67e74705SXin Li #pragma weak baz
baz()24*67e74705SXin Li extern "C" void baz() {}
25*67e74705SXin Li // CHECK-LABEL: define weak {{.*}}void @baz(
26*67e74705SXin Li 
27*67e74705SXin Li #pragma weak _Z3baxv
bax()28*67e74705SXin Li void bax() {}
29*67e74705SXin Li // GCC produces a weak symbol for this one, but it doesn't look like a good
30*67e74705SXin Li // idea to expose the mangling to the pragma unless we really have to.
31*67e74705SXin Li // CHECK-LABEL: define {{.*}}void @_Z3baxv(
32