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; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=SI -mattr=-promote-alloca < %s | FileCheck -check-prefix=SI-ALLOCA -check-prefix=SI %s
; RUN: llc -verify-machineinstrs -march=amdgcn -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]+}}, [[PTRREG]], s[{{[0-9]+:[0-9]+}}]
;
; 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], [4 x i32]* %alloca, i32 1, i32 %b
; SI-PROMOTE: v_add_i32_e32 [[PTRREG:v[0-9]+]], 16
; SI-PROMOTE: ds_write_b32 [[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, i32 addrspace(1)* %inA, i32 %tid
%b_ptr = getelementptr i32, i32 addrspace(1)* %inB, i32 %tid
%a = load i32, i32 addrspace(1)* %a_ptr
%b = load i32, i32 addrspace(1)* %b_ptr
%result = add i32 %a, %b
%alloca_ptr = getelementptr [4 x i32], [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, i32* %alloca_ptr, align 4
%out_ptr = getelementptr i32, i32 addrspace(1)* %out, i32 %tid
store i32 %reload, i32 addrspace(1)* %out_ptr, align 4
ret void
}
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