65 lines
1.4 KiB
C++
65 lines
1.4 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
|
|
namespace foo {
|
|
|
|
// CHECK-NOT: @a = global i32
|
|
extern "C" int a;
|
|
|
|
// CHECK-NOT: @_ZN3foo1bE = global i32
|
|
extern int b;
|
|
|
|
// CHECK: @_ZN3foo1cE = global i32
|
|
int c = 5;
|
|
|
|
// CHECK-NOT: @_ZN3foo1dE
|
|
extern "C" struct d;
|
|
|
|
}
|
|
|
|
namespace test1 {
|
|
namespace {
|
|
struct X {};
|
|
}
|
|
extern "C" {
|
|
// CHECK: @test1_b = global
|
|
X test1_b = X();
|
|
}
|
|
void *use = &test1_b;
|
|
// CHECK: @_ZN5test13useE = global
|
|
}
|
|
|
|
namespace test2 {
|
|
namespace {
|
|
struct X {};
|
|
}
|
|
|
|
// CHECK: @test2_b = global
|
|
extern "C" X test2_b;
|
|
X test2_b;
|
|
}
|
|
|
|
extern "C" {
|
|
static int unused_var;
|
|
static int unused_fn() { return 0; }
|
|
|
|
__attribute__((used)) static int internal_var;
|
|
__attribute__((used)) static int internal_fn() { return 0; }
|
|
|
|
__attribute__((used)) static int duplicate_internal_var;
|
|
__attribute__((used)) static int duplicate_internal_fn() { return 0; }
|
|
|
|
namespace N {
|
|
__attribute__((used)) static int duplicate_internal_var;
|
|
__attribute__((used)) static int duplicate_internal_fn() { return 0; }
|
|
}
|
|
|
|
// CHECK: @llvm.used = appending global {{.*}} @internal_var {{.*}} @internal_fn
|
|
|
|
// CHECK-NOT: @unused
|
|
// CHECK-NOT: @duplicate_internal
|
|
// CHECK: @internal_var = alias internal i32* @_Z12internal_var
|
|
// CHECK-NOT: @unused
|
|
// CHECK-NOT: @duplicate_internal
|
|
// CHECK: @internal_fn = alias internal i32 ()* @_Z11internal_fnv
|
|
// CHECK-NOT: @unused
|
|
// CHECK-NOT: @duplicate_internal
|
|
}
|