1 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s 2 3 void foo(int x) 4 { 5 _Atomic(int) i = 0; 6 _Atomic(short) j = 0; 7 // Check that multiply / divides on atomics produce a cmpxchg loop 8 i *= 2; 9 // CHECK: mul nsw i32 10 // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4,)}} 11 i /= 2; 12 // CHECK: sdiv i32 13 // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4, )}} 14 j /= x; 15 // CHECK: sdiv i32 16 // CHECK: {{(cmpxchg i16*|i1 @__atomic_compare_exchange\(i32 2, )}} 17 18 } 19