1 ; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=SI -mattr=-promote-alloca < %s | FileCheck -check-prefix=SI-ALLOCA -check-prefix=SI %s
2 ; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=SI -mattr=+promote-alloca < %s | FileCheck -check-prefix=SI-PROMOTE -check-prefix=SI %s
4 declare i32 @llvm.SI.tid() nounwind readnone
5 declare void @llvm.AMDGPU.barrier.local() nounwind noduplicate
7 ; The required pointer calculations for the alloca'd actually requires
8 ; an add and won't be folded into the addressing, which fails with a
9 ; 64-bit pointer add. This should work since private pointers should
12 ; SI-LABEL: {{^}}test_private_array_ptr_calc:
14 ; FIXME: We end up with zero argument for ADD, because
15 ; SIRegisterInfo::eliminateFrameIndex() blindly replaces the frame index
16 ; with the appropriate offset. We should fold this into the store.
17 ; SI-ALLOCA: v_add_i32_e32 [[PTRREG:v[0-9]+]], vcc, 0, v{{[0-9]+}}
18 ; SI-ALLOCA: buffer_store_dword {{v[0-9]+}}, [[PTRREG]], s[{{[0-9]+:[0-9]+}}]
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 [4 x i32], [4 x i32]* %alloca, i32 1, i32 %b
25 ; SI-PROMOTE: v_add_i32_e32 [[PTRREG:v[0-9]+]], vcc, 16
26 ; SI-PROMOTE: ds_write_b32 [[PTRREG]]
27 define void @test_private_array_ptr_calc(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %inA, i32 addrspace(1)* noalias %inB) {
28 %alloca = alloca [4 x i32], i32 4, align 16
29 %tid = call i32 @llvm.SI.tid() readnone
30 %a_ptr = getelementptr i32, i32 addrspace(1)* %inA, i32 %tid
31 %b_ptr = getelementptr i32, i32 addrspace(1)* %inB, i32 %tid
32 %a = load i32, i32 addrspace(1)* %a_ptr
33 %b = load i32, i32 addrspace(1)* %b_ptr
34 %result = add i32 %a, %b
35 %alloca_ptr = getelementptr [4 x i32], [4 x i32]* %alloca, i32 1, i32 %b
36 store i32 %result, i32* %alloca_ptr, align 4
38 call void @llvm.AMDGPU.barrier.local() nounwind noduplicate
39 %reload = load i32, i32* %alloca_ptr, align 4
40 %out_ptr = getelementptr i32, i32 addrspace(1)* %out, i32 %tid
41 store i32 %reload, i32 addrspace(1)* %out_ptr, align 4