1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 3 ; GCN-LABEL: {{^}}test_barrier: 4 ; GCN: buffer_store_dword 5 ; GCN: s_waitcnt 6 ; GCN: s_barrier 7 define void @test_barrier(i32 addrspace(1)* %out) #0 { 8 entry: 9 %tmp = call i32 @llvm.amdgcn.workitem.id.x() 10 %tmp1 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp 11 store i32 %tmp, i32 addrspace(1)* %tmp1 12 call void @llvm.amdgcn.s.barrier() 13 %tmp2 = call i32 @llvm.r600.read.local.size.x() 14 %tmp3 = sub i32 %tmp2, 1 15 %tmp4 = sub i32 %tmp3, %tmp 16 %tmp5 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp4 17 %tmp6 = load i32, i32 addrspace(1)* %tmp5 18 store i32 %tmp6, i32 addrspace(1)* %tmp1 19 ret void 20 } 21 22 declare void @llvm.amdgcn.s.barrier() #1 23 declare i32 @llvm.amdgcn.workitem.id.x() #2 24 declare i32 @llvm.r600.read.local.size.x() #2 25 26 attributes #0 = { nounwind } 27 attributes #1 = { convergent nounwind } 28 attributes #2 = { nounwind readnone } 29
