src/llvm/tools/clang/test/CodeGenCXX/threadsafe-statics.cpp

   1 // RUN: %clang_cc1 -emit-llvm -triple=x86_64-apple-darwin10 -o - %s | FileCheck -check-prefix=WITH-TSS %s
   2 // RUN: %clang_cc1 -emit-llvm -triple=x86_64-apple-darwin10 -o - %s -fno-threadsafe-statics | FileCheck -check-prefix=NO-TSS %s
   3
   4 int f();
   5
   6 // WITH-TSS: @_ZZ1gvE1a = internal global i32 0, align 4
   7 // WITH-TSS: @_ZGVZ1gvE1a = internal global i64 0
   8
   9 // WITH-TSS: define void @_Z1gv() nounwind
  10 // WITH-TSS: call i32 @__cxa_guard_acquire
  11 // WITH-TSS: call void @__cxa_guard_release
  12 // WITH-TSS: ret void
  13 void g() {
  14   static int a = f();
  15 }
  16
  17 // NO-TSS: @_ZZ1gvE1a = internal global i32 0, align 4
  18 // NO-TSS: @_ZGVZ1gvE1a = internal global i8 0
  19
  20 // NO-TSS: define void @_Z1gv() nounwind
  21 // NO-TSS-NOT: call i32 @__cxa_guard_acquire
  22 // NO-TSS-NOT: call void @__cxa_guard_release
  23 // NO-TSS: ret void