xref: /minix3/external/bsd/llvm/dist/clang/test/CodeGen/atomic_ops.c (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7) 
1f4a2713aSLionel Sambuc // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
2f4a2713aSLionel Sambuc 
foo(int x)3f4a2713aSLionel Sambuc void foo(int x)
4f4a2713aSLionel Sambuc {
5f4a2713aSLionel Sambuc   _Atomic(int) i = 0;
6f4a2713aSLionel Sambuc   _Atomic(short) j = 0;
7f4a2713aSLionel Sambuc   // Check that multiply / divides on atomics produce a cmpxchg loop
8f4a2713aSLionel Sambuc   i *= 2;
9f4a2713aSLionel Sambuc   // CHECK: mul nsw i32
10*0a6a1f1dSLionel Sambuc   // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4,)}}
11f4a2713aSLionel Sambuc   i /= 2;
12f4a2713aSLionel Sambuc   // CHECK: sdiv i32
13*0a6a1f1dSLionel Sambuc   // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4, )}}
14f4a2713aSLionel Sambuc   j /= x;
15f4a2713aSLionel Sambuc   // CHECK: sdiv i32
16*0a6a1f1dSLionel Sambuc   // CHECK: {{(cmpxchg i16*|i1 @__atomic_compare_exchange\(i32 2, )}}
17f4a2713aSLionel Sambuc 
18f4a2713aSLionel Sambuc }
19