1; RUN: opt %s -mtriple amdgcn-- -analyze -divergence -use-gpu-divergence-analysis | FileCheck %s
2
3; CHECK: DIVERGENT:  %tmp = cmpxchg volatile
4define amdgpu_kernel void @unreachable_loop(i32 %tidx) #0 {
5entry:
6  unreachable
7
8unreachable_loop:                                        ; preds = %do.body.i, %if.then11
9  %tmp = cmpxchg volatile i32 addrspace(1)* null, i32 0, i32 0 seq_cst seq_cst
10  %cmp.i = extractvalue { i32, i1 } %tmp, 1
11  br i1 %cmp.i, label %unreachable_loop, label %end
12
13end:                                      ; preds = %do.body.i51, %atomicAdd_g_f.exit
14  unreachable
15}
16
17attributes #0 = { norecurse nounwind }
18