1 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -amdgpu-load-store-vectorizer=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
3 ; GatherAllAliases gives up on trying to analyze cases where the
4 ; pointer may have been loaded from an aliased store, so make sure
5 ; that this works and allows moving the stores to a better chain to
6 ; allow them to be merged merged when it's clear the pointer is loaded
7 ; from constant/invariant memory.
9 ; GCN-LABEL: {{^}}test_merge_store_constant_i16_invariant_global_pointer_load:
10 ; GCN-DAG: buffer_load_dwordx2 [[PTR:v\[[0-9]+:[0-9]+\]]],
11 ; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x1c8007b
12 ; GCN: buffer_store_dword [[K]], [[PTR]]
13 define amdgpu_kernel void @test_merge_store_constant_i16_invariant_global_pointer_load(i16 addrspace(1)* addrspace(1)* dereferenceable(4096) nonnull %in) #0 {
14 %ptr = load i16 addrspace(1)*, i16 addrspace(1)* addrspace(1)* %in, !invariant.load !0
15 %ptr.1 = getelementptr i16, i16 addrspace(1)* %ptr, i64 1
16 store i16 123, i16 addrspace(1)* %ptr, align 4
17 store i16 456, i16 addrspace(1)* %ptr.1
21 ; GCN-LABEL: {{^}}test_merge_store_constant_i16_invariant_constant_pointer_load:
22 ; GCN: s_load_dwordx2 s{{\[}}[[SPTR_LO:[0-9]+]]:[[SPTR_HI:[0-9]+]]{{\]}}
23 ; GCN: v_mov_b32_e32 [[K:v[0-9]+]], 0x1c8007b
24 ; GCN: buffer_store_dword [[K]], off, s{{\[}}[[SPTR_LO]]:
25 define amdgpu_kernel void @test_merge_store_constant_i16_invariant_constant_pointer_load(i16 addrspace(1)* addrspace(4)* dereferenceable(4096) nonnull %in) #0 {
26 %ptr = load i16 addrspace(1)*, i16 addrspace(1)* addrspace(4)* %in, !invariant.load !0
27 %ptr.1 = getelementptr i16, i16 addrspace(1)* %ptr, i64 1
28 store i16 123, i16 addrspace(1)* %ptr, align 4
29 store i16 456, i16 addrspace(1)* %ptr.1
35 attributes #0 = { nounwind }