1 ; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tahiti -mattr=-promote-alloca < %s | FileCheck -check-prefix=SI-ALLOCA -check-prefix=SI %s
2 ; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tahiti -mattr=+promote-alloca < %s | FileCheck -check-prefix=SI-PROMOTE -check-prefix=SI %s
4 declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #1
5 declare i32 @llvm.amdgcn.mbcnt.hi(i32, i32) #1
6 declare void @llvm.amdgcn.s.barrier() #2
8 ; The required pointer calculations for the alloca'd actually requires
9 ; an add and won't be folded into the addressing, which fails with a
10 ; 64-bit pointer add. This should work since private pointers should
13 ; SI-LABEL: {{^}}test_private_array_ptr_calc:
15 ; SI-ALLOCA: v_add_i32_e32 [[PTRREG:v[0-9]+]], vcc, 16, v{{[0-9]+}}
16 ; SI-ALLOCA: buffer_store_dword {{v[0-9]+}}, [[PTRREG]], s[{{[0-9]+:[0-9]+}}], 0 offen offset:64
17 ; SI-ALLOCA: s_barrier
18 ; SI-ALLOCA: buffer_load_dword {{v[0-9]+}}, [[PTRREG]], s[{{[0-9]+:[0-9]+}}], 0 offen offset:64
20 ; FIXME: The AMDGPUPromoteAlloca pass should be able to convert this
21 ; alloca to a vector. It currently fails because it does not know how
23 ; getelementptr inbounds [16 x i32], ptr addrspace(5) %alloca, i32 1, i32 %b
25 ; SI-PROMOTE: v_add_i32_e32 [[PTRREG:v[0-9]+]], vcc, 64
26 ; SI-PROMOTE: ds_write_b32 [[PTRREG]]
27 define amdgpu_kernel void @test_private_array_ptr_calc(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %inA, ptr addrspace(1) noalias %inB) #0 {
28 %alloca = alloca [16 x i32], align 16, addrspace(5)
29 %mbcnt.lo = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0);
30 %tid = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 %mbcnt.lo)
31 %a_ptr = getelementptr inbounds i32, ptr addrspace(1) %inA, i32 %tid
32 %b_ptr = getelementptr inbounds i32, ptr addrspace(1) %inB, i32 %tid
33 %a = load i32, ptr addrspace(1) %a_ptr, !range !0, !noundef !{}
34 %b = load i32, ptr addrspace(1) %b_ptr, !range !0, !noundef !{}
35 %result = add i32 %a, %b
36 %alloca_ptr = getelementptr inbounds [16 x i32], ptr addrspace(5) %alloca, i32 1, i32 %b
37 store i32 %result, ptr addrspace(5) %alloca_ptr, align 4
39 call void @llvm.amdgcn.s.barrier()
40 %reload = load i32, ptr addrspace(5) %alloca_ptr, align 4, !range !0, !noundef !{}
41 %out_ptr = getelementptr inbounds i32, ptr addrspace(1) %out, i32 %tid
42 store i32 %reload, ptr addrspace(1) %out_ptr, align 4
46 attributes #0 = { nounwind "amdgpu-waves-per-eu"="1,1" "amdgpu-flat-work-group-size"="1,256" }
47 attributes #1 = { nounwind readnone }
48 attributes #2 = { nounwind convergent }
50 !0 = !{i32 0, i32 65536 }