| ; RUN: llc -verify-machineinstrs -march=r600 -mcpu=SI -mattr=-promote-alloca < %s | FileCheck -check-prefix=SI-ALLOCA -check-prefix=SI %s |
| ; RUN: llc -verify-machineinstrs -march=r600 -mcpu=SI -mattr=+promote-alloca < %s | FileCheck -check-prefix=SI-PROMOTE -check-prefix=SI %s |
| |
| declare i32 @llvm.SI.tid() nounwind readnone |
| declare void @llvm.AMDGPU.barrier.local() nounwind noduplicate |
| |
| ; The required pointer calculations for the alloca'd actually requires |
| ; an add and won't be folded into the addressing, which fails with a |
| ; 64-bit pointer add. This should work since private pointers should |
| ; be 32-bits. |
| |
| ; SI-LABEL: @test_private_array_ptr_calc: |
| |
| ; FIXME: We end up with zero argument for ADD, because |
| ; SIRegisterInfo::eliminateFrameIndex() blindly replaces the frame index |
| ; with the appropriate offset. We should fold this into the store. |
| ; SI-ALLOCA: V_ADD_I32_e32 [[PTRREG:v[0-9]+]], 0, v{{[0-9]+}} |
| ; SI-ALLOCA: BUFFER_STORE_DWORD {{v[0-9]+}}, s[{{[0-9]+:[0-9]+}}], [[PTRREG]] |
| ; |
| ; FIXME: The AMDGPUPromoteAlloca pass should be able to convert this |
| ; alloca to a vector. It currently fails because it does not know how |
| ; to interpret: |
| ; getelementptr [4 x i32]* %alloca, i32 1, i32 %b |
| |
| ; SI-PROMOTE: V_ADD_I32_e32 [[PTRREG:v[0-9]+]] |
| ; SI-PROMOTE: DS_WRITE_B32 {{v[0-9]+}}, [[PTRREG]] |
| define void @test_private_array_ptr_calc(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %inA, i32 addrspace(1)* noalias %inB) { |
| %alloca = alloca [4 x i32], i32 4, align 16 |
| %tid = call i32 @llvm.SI.tid() readnone |
| %a_ptr = getelementptr i32 addrspace(1)* %inA, i32 %tid |
| %b_ptr = getelementptr i32 addrspace(1)* %inB, i32 %tid |
| %a = load i32 addrspace(1)* %a_ptr |
| %b = load i32 addrspace(1)* %b_ptr |
| %result = add i32 %a, %b |
| %alloca_ptr = getelementptr [4 x i32]* %alloca, i32 1, i32 %b |
| store i32 %result, i32* %alloca_ptr, align 4 |
| ; Dummy call |
| call void @llvm.AMDGPU.barrier.local() nounwind noduplicate |
| %reload = load i32* %alloca_ptr, align 4 |
| %out_ptr = getelementptr i32 addrspace(1)* %out, i32 %tid |
| store i32 %reload, i32 addrspace(1)* %out_ptr, align 4 |
| ret void |
| } |
| |