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

   1 // RUN: %clang_cc1 -triple thumbv8.1m.main-none-eabi -target-feature +pacbti -fcxx-exceptions -fexceptions -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-PACBTI
   2 // RUN: %clang_cc1 -triple thumbv8.1m.main-none-eabi -target-feature -pacbti -fcxx-exceptions -fexceptions -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-NOPACBTI
   3
   4 // Check that functions generated by clang have the correct attributes
   5
   6 class Example {
   7 public:
   8   Example();
   9   int fn();
  10 };
  11
  12 // Initialization of var1 causes __cxx_global_var_init and __tls_init to be generated
  13 thread_local Example var1;
  14 extern thread_local Example var2;
  15 extern void fn();
  16
  17 int testfn() noexcept {
  18   // Calling fn in a noexcept function causes __clang_call_terminate to be generated
  19   fn();
  20   // Use of var1 and var2 causes TLS wrapper functions to be generated
  21   return var1.fn() + var2.fn();
  22 }
  23
  24 // CHECK: define {{.*}} @__cxx_global_var_init() [[ATTR1:#[0-9]+]]
  25 // CHECK: define {{.*}} @__clang_call_terminate({{.*}}) [[ATTR2:#[0-9]+]]
  26 // CHECK: define {{.*}} @_ZTW4var1() [[ATTR1]]
  27 // CHECK: define {{.*}} @_ZTW4var2() [[ATTR1]]
  28 // CHECK: define {{.*}} @__tls_init() [[ATTR1]]
  29
  30 // CHECK-PACBTI: attributes [[ATTR1]] = { {{.*}}"target-features"="+armv8.1-m.main,+pacbti,+thumb-mode"{{.*}} }
  31 // CHECK-PACBTI: attributes [[ATTR2]] = { {{.*}}"target-features"="+armv8.1-m.main,+pacbti,+thumb-mode"{{.*}} }
  32
  33 // CHECK-NOPACBTI: attributes [[ATTR1]] = { {{.*}}"target-features"="+armv8.1-m.main,+thumb-mode,-pacbti"{{.*}} }
  34 // CHECK-NOPACBTI: attributes [[ATTR2]] = { {{.*}}"target-features"="+armv8.1-m.main,+thumb-mode,-pacbti"{{.*}} }