1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 3 ; GCN-LABEL: {{^}}lower_control_flow_unreachable_terminator: 4 ; GCN: v_cmp_eq_i32 5 ; GCN: s_and_saveexec_b64 6 ; GCN: s_xor_b64 7 ; GCN: s_branch BB0_1 8 9 ; GCN: s_or_b64 exec, exec 10 ; GCN: s_endpgm 11 12 ; GCN: ds_write_b32 13 ; GCN: s_waitcnt 14 define void @lower_control_flow_unreachable_terminator() #0 { 15 bb: 16 %tmp15 = tail call i32 @llvm.amdgcn.workitem.id.y() 17 %tmp63 = icmp eq i32 %tmp15, 32 18 br i1 %tmp63, label %bb64, label %bb68 19 20 bb64: 21 store volatile i32 0, i32 addrspace(3)* undef, align 4 22 unreachable 23 24 bb68: 25 ret void 26 } 27 28 ; GCN-LABEL: {{^}}lower_control_flow_unreachable_terminator_swap_block_order: 29 ; GCN: v_cmp_eq_i32 30 ; GCN: s_and_saveexec_b64 31 ; GCN: s_xor_b64 32 ; GCN: s_endpgm 33 34 ; GCN: s_or_b64 exec, exec 35 ; GCN: ds_write_b32 36 ; GCN: s_waitcnt 37 define void @lower_control_flow_unreachable_terminator_swap_block_order() #0 { 38 bb: 39 %tmp15 = tail call i32 @llvm.amdgcn.workitem.id.y() 40 %tmp63 = icmp eq i32 %tmp15, 32 41 br i1 %tmp63, label %bb68, label %bb64 42 43 bb68: 44 ret void 45 46 bb64: 47 store volatile i32 0, i32 addrspace(3)* undef, align 4 48 unreachable 49 } 50 51 ; Function Attrs: nounwind readnone 52 declare i32 @llvm.amdgcn.workitem.id.y() #1 53 54 attributes #0 = { nounwind } 55 attributes #1 = { nounwind readnone } 56 attributes #2 = { nounwind } 57
