clang/test/CodeGen/attr-used.c

// RUN: clang-cc -emit-llvm -o %t %s &&
// RUN: grep '@llvm.used = .*@g0' %t &&
// RUN: grep '@llvm.used = .*@f0' %t &&
// RUN: grep '@llvm.used = .*@f1.l0' %t


int g0 __attribute__((used));

static void __attribute__((used)) f0(void) {
}

void f1() { 
  static int l0 __attribute__((used)) = 5225; 
}