xref: /aosp_15_r20/external/clang/test/CodeGen/2010-01-13-MemBarrier.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
2*67e74705SXin Li // rdar://7536390
3*67e74705SXin Li 
4*67e74705SXin Li typedef unsigned __INT32_TYPE__ uint32_t;
5*67e74705SXin Li 
t(uint32_t * ptr,uint32_t val)6*67e74705SXin Li unsigned t(uint32_t *ptr, uint32_t val) {
7*67e74705SXin Li   // CHECK:      @t
8*67e74705SXin Li   // CHECK: atomicrmw xchg i32* {{.*}} seq_cst
9*67e74705SXin Li   return __sync_lock_test_and_set(ptr, val);
10*67e74705SXin Li }
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