Test case for r280607 to check presence and sanity of the *_LOCK_FREE

macros.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@280622 91177308-0d34-0410-b5e6-96231b3b80d8

test/Headers/stdatomic.c

+// RUN: %clang_cc1 -std=c11 -E %s | FileCheck %s
+#include <stdatomic.h>
+
+int bool_lock_free = ATOMIC_BOOL_LOCK_FREE;
+// CHECK: bool_lock_free = {{ *[012] *;}}
+
+int char_lock_free = ATOMIC_CHAR_LOCK_FREE;
+// CHECK: char_lock_free = {{ *[012] *;}}
+
+int char16_t_lock_free = ATOMIC_CHAR16_T_LOCK_FREE;
+// CHECK: char16_t_lock_free = {{ *[012] *;}}
+
+int char32_t_lock_free = ATOMIC_CHAR32_T_LOCK_FREE;
+// CHECK: char32_t_lock_free = {{ *[012] *;}}
+
+int wchar_t_lock_free = ATOMIC_WCHAR_T_LOCK_FREE;
+// CHECK: wchar_t_lock_free = {{ *[012] *;}}
+
+int short_lock_free = ATOMIC_SHORT_LOCK_FREE;
+// CHECK: short_lock_free = {{ *[012] *;}}
+
+int int_lock_free = ATOMIC_INT_LOCK_FREE;
+// CHECK: int_lock_free = {{ *[012] *;}}
+
+int long_lock_free = ATOMIC_LONG_LOCK_FREE;
+// CHECK: long_lock_free = {{ *[012] *;}}
+
+int llong_lock_free = ATOMIC_LLONG_LOCK_FREE;
+// CHECK: llong_lock_free = {{ *[012] *;}}
+
+int pointer_lock_free = ATOMIC_POINTER_LOCK_FREE;
+// CHECK: pointer_lock_free = {{ *[012] *;}}