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      1 ; RUN: llc -march=amdgcn < %s | FileCheck %s
      2 
      3 ; CHECK-LABEL: {{^}}unknown_wgs:
      4 ; CHECK: s_barrier
      5 define amdgpu_kernel void @unknown_wgs() {
      6   tail call void @llvm.amdgcn.s.barrier() #0
      7   ret void
      8 }
      9 
     10 ; CHECK-LABEL: {{^}}flat_wgs_attr_32_128:
     11 ; CHECK: s_barrier
     12 define amdgpu_kernel void @flat_wgs_attr_32_128() #1 {
     13   tail call void @llvm.amdgcn.s.barrier() #0
     14   ret void
     15 }
     16 
     17 ; CHECK-LABEL: {{^}}flat_wgs_attr_32_64:
     18 ; CHECK: :
     19 ; CHECK-NEXT: ; wave barrier
     20 ; CHECK-NEXT: s_endpgm
     21 define amdgpu_kernel void @flat_wgs_attr_32_64() #2 {
     22   tail call void @llvm.amdgcn.s.barrier() #0
     23   ret void
     24 }
     25 
     26 declare void @llvm.amdgcn.s.barrier() #0
     27 
     28 attributes #0 = { convergent nounwind }
     29 attributes #1 = { nounwind "amdgpu-flat-work-group-size"="32,128" }
     30 attributes #2 = { nounwind "amdgpu-flat-work-group-size"="32,64" }
     31