source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AMDGPU/array-ptr-calc-i32.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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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
3
4declare i32 @llvm.SI.tid() nounwind readnone
5declare void @llvm.AMDGPU.barrier.local() nounwind convergent
6
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
10; be 32-bits.
11
12; SI-LABEL: {{^}}test_private_array_ptr_calc:
13
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]+}}]
19;
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
22; to interpret:
23; getelementptr [4 x i32], [4 x i32]* %alloca, i32 1, i32 %b
24
25; SI-PROMOTE: v_add_i32_e32 [[PTRREG:v[0-9]+]], vcc, 16
26; SI-PROMOTE: ds_write_b32 [[PTRREG]]
27define 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
37  ; Dummy call
38  call void @llvm.AMDGPU.barrier.local() nounwind convergent
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
42  ret void
43}
44
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