1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 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. 8 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 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 18 ret void 19 } 20 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 void @test_merge_store_constant_i16_invariant_constant_pointer_load(i16 addrspace(1)* addrspace(2)* dereferenceable(4096) nonnull %in) #0 { 26 %ptr = load i16 addrspace(1)*, i16 addrspace(1)* addrspace(2)* %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 30 ret void 31 } 32 33 !0 = !{} 34 35 attributes #0 = { nounwind } 36
