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