clang/test/CodeGenCXX/arm64-generated-fn-attr.cpp

   1 // RUN: %clang_cc1 -triple aarch64 -mbranch-target-enforce -msign-return-address=all -fcxx-exceptions -fexceptions -emit-llvm %s -o - | FileCheck %s
   2
   3 // Check that functions generated by clang have the correct attributes
   4
   5 class Example {
   6 public:
   7   Example();
   8   int fn();
   9 };
  10
  11 // Initialization of var1 causes __cxx_global_var_init and __tls_init to be generated
  12 thread_local Example var1;
  13 extern thread_local Example var2;
  14 extern void fn();
  15
  16 int testfn() noexcept {
  17   // Calling fn in a noexcept function causes __clang_call_terminate to be generated
  18   fn();
  19   // Use of var1 and var2 causes TLS wrapper functions to be generated
  20   return var1.fn() + var2.fn();
  21 }
  22
  23 // CHECK: define {{.*}} @__cxx_global_var_init() [[ATTR1:#[0-9]+]]
  24 // CHECK: define {{.*}} @__clang_call_terminate({{.*}}) [[ATTR2:#[0-9]+]]
  25 // CHECK: define {{.*}} @_ZTW4var1() [[ATTR1]]
  26 // CHECK: define {{.*}} @_ZTW4var2() [[ATTR1]]
  27 // CHECK: define {{.*}} @__tls_init() [[ATTR1]]
  28
  29 // CHECK: attributes [[ATTR1]] = { {{.*}}"branch-target-enforcement" {{.*}}"sign-return-address"="all" "sign-return-address-key"="a_key"
  30 // CHECK: attributes [[ATTR2]] = { {{.*}}"branch-target-enforcement" {{.*}}"sign-return-address"="all" "sign-return-address-key"="a_key"