1// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
2// rdar://7536390
3
4typedef unsigned __INT32_TYPE__ uint32_t;
5
6unsigned t(uint32_t *ptr, uint32_t val) {
7  // CHECK:      @t
8  // CHECK: atomicrmw xchg i32* {{.*}} seq_cst
9  return __sync_lock_test_and_set(ptr, val);
10}
11