1; RUN: llc -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VCCZ-BUG %s 2; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VCCZ-BUG %s 3; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=NOVCCZ-BUG %s 4 5; GCN-FUNC: {{^}}vccz_workaround: 6; GCN: s_load_dword s{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], 0x0 7; GCN: v_cmp_neq_f32_e64 [[MASK:s\[[0-9]+:[0-9]+\]]], 0 8; GCN: s_and_b64 vcc, exec, [[MASK]] 9; GCN: s_waitcnt lgkmcnt(0) 10; VCCZ-BUG: s_mov_b64 vcc, vcc 11; NOVCCZ-BUG-NOT: s_mov_b64 vcc, vcc 12; GCN: s_cbranch_vccnz [[EXIT:[0-9A-Za-z_]+]] 13; GCN: buffer_store_dword 14; GCN: [[EXIT]]: 15; GCN: s_endpgm 16define void @vccz_workaround(i32 addrspace(2)* %in, i32 addrspace(1)* %out, float %cond) { 17entry: 18 %cnd = fcmp oeq float 0.0, %cond 19 %sgpr = load volatile i32, i32 addrspace(2)* %in 20 br i1 %cnd, label %if, label %endif 21 22if: 23 store i32 %sgpr, i32 addrspace(1)* %out 24 br label %endif 25 26endif: 27 ret void 28} 29 30; GCN-FUNC: {{^}}vccz_noworkaround: 31; GCN: v_cmp_neq_f32_e32 vcc, 0, v{{[0-9]+}} 32; GCN: s_and_b64 vcc, exec, vcc 33; GCN: s_cbranch_vccnz [[EXIT:[0-9A-Za-z_]+]] 34; GCN: buffer_store_dword 35; GCN: [[EXIT]]: 36; GCN: s_endpgm 37define void @vccz_noworkaround(float addrspace(1)* %in, float addrspace(1)* %out) { 38entry: 39 %vgpr = load volatile float, float addrspace(1)* %in 40 %cnd = fcmp oeq float 0.0, %vgpr 41 br i1 %cnd, label %if, label %endif 42 43if: 44 store float %vgpr, float addrspace(1)* %out 45 br label %endif 46 47endif: 48 ret void 49} 50