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