2010-01-13-MemBarrier.c 271 Bytes Raw Blame History Permalink 1 2 3 4 5 6 7 8 9 10 // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s // rdar://7536390 typedef unsigned __INT32_TYPE__ uint32_t; unsigned t(uint32_t *ptr, uint32_t val) { // CHECK: @t // CHECK: atomicrmw xchg i32* {{.*}} seq_cst return __sync_lock_test_and_set(ptr, val); }