1 ; RUN: llc -mtriple=amdgcn--amdhsa -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 3 ; If the workgroup id range is restricted, we should be able to use 4 ; mad24 for the usual indexing pattern. 5 6 declare i32 @llvm.amdgcn.workgroup.id.x() #0 7 declare i32 @llvm.amdgcn.workitem.id.x() #0 8 declare i8 addrspace(2)* @llvm.amdgcn.dispatch.ptr() #0 9 10 ; GCN-LABEL: {{^}}get_global_id_0: 11 ; GCN: s_and_b32 [[WGSIZEX:s[0-9]+]], {{s[0-9]+}}, 0xffff 12 ; GCN: v_mov_b32_e32 [[VWGSIZEX:v[0-9]+]], [[WGSIZEX]] 13 ; GCN: v_mad_u32_u24 v{{[0-9]+}}, [[VWGSIZEX]], s8, v0 14 define void @get_global_id_0(i32 addrspace(1)* %out) #1 { 15 %dispatch.ptr = call i8 addrspace(2)* @llvm.amdgcn.dispatch.ptr() 16 %cast.dispatch.ptr = bitcast i8 addrspace(2)* %dispatch.ptr to i32 addrspace(2)* 17 %gep = getelementptr inbounds i32, i32 addrspace(2)* %cast.dispatch.ptr, i64 1 18 %workgroup.size.xy = load i32, i32 addrspace(2)* %gep, align 4, !invariant.load !0 19 %workgroup.size.x = and i32 %workgroup.size.xy, 65535 20 21 %workitem.id.x = call i32 @llvm.amdgcn.workitem.id.x(), !range !1 22 %workgroup.id.x = call i32 @llvm.amdgcn.workgroup.id.x(), !range !2 23 24 %mul = mul i32 %workgroup.id.x, %workgroup.size.x 25 %add = add i32 %mul, %workitem.id.x 26 27 store i32 %add, i32 addrspace(1)* %out, align 4 28 ret void 29 } 30 31 attributes #0 = { nounwind readnone } 32 attributes #1 = { nounwind } 33 34 !0 = !{} 35 !1 = !{i32 0, i32 1024} 36 !2 = !{i32 0, i32 16777216} 37
