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