1 ; RUN: opt %s -mtriple amdgcn-- -analyze -divergence | FileCheck %s 2 3 ; CHECK: DIVERGENT: %tmp = cmpxchg volatile 4 define void @unreachable_loop(i32 %tidx) #0 { 5 entry: 6 unreachable 7 8 unreachable_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 13 end: ; preds = %do.body.i51, %atomicAdd_g_f.exit 14 unreachable 15 } 16 17 attributes #0 = { norecurse nounwind } 18
